|
Home Return to list Heat Advisory 0012 Issued by the Baltimore / Washington Forecast Office
Action: New Issued At: 2025-07-29 12:53:22 924 WWUS71 KLWX 291753 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 153 PM EDT Tue Jul 29 2025 MDZ003-VAZ027>031-WVZ050>053-055-300300- /O.NEW.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ /O.CON.KLWX.HT.Y.0011.000000T0000Z-250730T0000Z/ Washington-Shenandoah-Frederick VA-Page-Warren-Clarke-Hampshire- Morgan-Berkeley-Jefferson-Hardy- 153 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...For the first Heat Advisory, heat index values up to 101. For the second Heat Advisory, heat index values up to 103 expected. * WHERE...Portions of north central Maryland, northwest Virginia, and eastern and panhandle West Virginia. * WHEN...For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ MDZ502-VAZ026-WVZ502-504-300300- /O.NEW.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Central and Eastern Allegany-Rockingham-Eastern Grant-Eastern Mineral- 153 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 101 expected. * WHERE...In Maryland, Central and Eastern Allegany County. In Virginia, Rockingham County. In West Virginia, Eastern Grant and Eastern Mineral Counties. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ KR Action: New Issued At: 2025-07-29 12:53:22 924 WWUS71 KLWX 291753 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 153 PM EDT Tue Jul 29 2025 MDZ003-VAZ027>031-WVZ050>053-055-300300- /O.NEW.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ /O.CON.KLWX.HT.Y.0011.000000T0000Z-250730T0000Z/ Washington-Shenandoah-Frederick VA-Page-Warren-Clarke-Hampshire- Morgan-Berkeley-Jefferson-Hardy- 153 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...For the first Heat Advisory, heat index values up to 101. For the second Heat Advisory, heat index values up to 103 expected. * WHERE...Portions of north central Maryland, northwest Virginia, and eastern and panhandle West Virginia. * WHEN...For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ MDZ502-VAZ026-WVZ502-504-300300- /O.NEW.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Central and Eastern Allegany-Rockingham-Eastern Grant-Eastern Mineral- 153 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 101 expected. * WHERE...In Maryland, Central and Eastern Allegany County. In Virginia, Rockingham County. In West Virginia, Eastern Grant and Eastern Mineral Counties. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ KR Action: Continued Issued At: 2025-07-29 16:01:56 106 WWUS71 KLWX 292101 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 501 PM EDT Tue Jul 29 2025 DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-505-506- 526-527-300515- /O.EXA.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 501 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 105 to 109 expected. * WHERE...DC, portions of central, north central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MDZ003-VAZ027>031-WVZ050>053-055-300515- /O.CON.KLWX.HT.Y.0011.000000T0000Z-250730T0000Z/ /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Washington-Shenandoah-Frederick VA-Page-Warren-Clarke-Hampshire- Morgan-Berkeley-Jefferson-Hardy- 501 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...For the first Heat Advisory, heat index values up to 101. For the second Heat Advisory, heat index values up to 103 expected. * WHERE...Portions of north central Maryland, northwest Virginia, and eastern and panhandle West Virginia. * WHEN...For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ MDZ502-VAZ026-WVZ502-504-300515- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Central and Eastern Allegany-Rockingham-Eastern Grant-Eastern Mineral- 501 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 101 expected. * WHERE...In Maryland, Central and Eastern Allegany County. In Virginia, Rockingham County. In West Virginia, Eastern Grant and Eastern Mineral Counties. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ BRO Action: Area Extended Issued At: 2025-07-29 16:01:56 106 WWUS71 KLWX 292101 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 501 PM EDT Tue Jul 29 2025 DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-505-506- 526-527-300515- /O.EXA.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 501 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 105 to 109 expected. * WHERE...DC, portions of central, north central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MDZ003-VAZ027>031-WVZ050>053-055-300515- /O.CON.KLWX.HT.Y.0011.000000T0000Z-250730T0000Z/ /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Washington-Shenandoah-Frederick VA-Page-Warren-Clarke-Hampshire- Morgan-Berkeley-Jefferson-Hardy- 501 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...For the first Heat Advisory, heat index values up to 101. For the second Heat Advisory, heat index values up to 103 expected. * WHERE...Portions of north central Maryland, northwest Virginia, and eastern and panhandle West Virginia. * WHEN...For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ MDZ502-VAZ026-WVZ502-504-300515- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Central and Eastern Allegany-Rockingham-Eastern Grant-Eastern Mineral- 501 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 101 expected. * WHERE...In Maryland, Central and Eastern Allegany County. In Virginia, Rockingham County. In West Virginia, Eastern Grant and Eastern Mineral Counties. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ BRO Action: Continued Issued At: 2025-07-29 16:01:56 106 WWUS71 KLWX 292101 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 501 PM EDT Tue Jul 29 2025 DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-505-506- 526-527-300515- /O.EXA.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 501 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 105 to 109 expected. * WHERE...DC, portions of central, north central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MDZ003-VAZ027>031-WVZ050>053-055-300515- /O.CON.KLWX.HT.Y.0011.000000T0000Z-250730T0000Z/ /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Washington-Shenandoah-Frederick VA-Page-Warren-Clarke-Hampshire- Morgan-Berkeley-Jefferson-Hardy- 501 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...For the first Heat Advisory, heat index values up to 101. For the second Heat Advisory, heat index values up to 103 expected. * WHERE...Portions of north central Maryland, northwest Virginia, and eastern and panhandle West Virginia. * WHEN...For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ MDZ502-VAZ026-WVZ502-504-300515- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Central and Eastern Allegany-Rockingham-Eastern Grant-Eastern Mineral- 501 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 101 expected. * WHERE...In Maryland, Central and Eastern Allegany County. In Virginia, Rockingham County. In West Virginia, Eastern Grant and Eastern Mineral Counties. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ BRO Action: Continued Issued At: 2025-07-29 18:15:00 373 WWUS71 KLWX 292314 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 714 PM EDT Tue Jul 29 2025 MDZ003-VAZ027>031-WVZ050>053-055-300715- /O.CAN.KLWX.HT.Y.0011.000000T0000Z-250730T0000Z/ /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Washington-Shenandoah-Frederick VA-Page-Warren-Clarke-Hampshire- Morgan-Berkeley-Jefferson-Hardy- 714 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... ...HEAT ADVISORY IS CANCELLED... * WHAT...For the Heat Advisory on Wednesday, heat index values up to 103 expected. * WHERE...Portions of north central Maryland, northwest Virginia, and eastern and panhandle West Virginia. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-505-506- 526-527-300715- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 714 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 105 to 109 expected. * WHERE...DC, portions of central, north central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MDZ502-VAZ026-WVZ502-504-300715- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Central and Eastern Allegany-Rockingham-Eastern Grant-Eastern Mineral- 714 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 101 expected. * WHERE...In Maryland, Central and Eastern Allegany County. In Virginia, Rockingham County. In West Virginia, Eastern Grant and Eastern Mineral Counties. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ BRO Action: Continued Issued At: 2025-07-29 18:15:00 373 WWUS71 KLWX 292314 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 714 PM EDT Tue Jul 29 2025 MDZ003-VAZ027>031-WVZ050>053-055-300715- /O.CAN.KLWX.HT.Y.0011.000000T0000Z-250730T0000Z/ /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Washington-Shenandoah-Frederick VA-Page-Warren-Clarke-Hampshire- Morgan-Berkeley-Jefferson-Hardy- 714 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... ...HEAT ADVISORY IS CANCELLED... * WHAT...For the Heat Advisory on Wednesday, heat index values up to 103 expected. * WHERE...Portions of north central Maryland, northwest Virginia, and eastern and panhandle West Virginia. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-505-506- 526-527-300715- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 714 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 105 to 109 expected. * WHERE...DC, portions of central, north central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MDZ502-VAZ026-WVZ502-504-300715- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Central and Eastern Allegany-Rockingham-Eastern Grant-Eastern Mineral- 714 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 101 expected. * WHERE...In Maryland, Central and Eastern Allegany County. In Virginia, Rockingham County. In West Virginia, Eastern Grant and Eastern Mineral Counties. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ BRO Action: Continued Issued At: 2025-07-29 18:15:00 373 WWUS71 KLWX 292314 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 714 PM EDT Tue Jul 29 2025 MDZ003-VAZ027>031-WVZ050>053-055-300715- /O.CAN.KLWX.HT.Y.0011.000000T0000Z-250730T0000Z/ /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Washington-Shenandoah-Frederick VA-Page-Warren-Clarke-Hampshire- Morgan-Berkeley-Jefferson-Hardy- 714 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... ...HEAT ADVISORY IS CANCELLED... * WHAT...For the Heat Advisory on Wednesday, heat index values up to 103 expected. * WHERE...Portions of north central Maryland, northwest Virginia, and eastern and panhandle West Virginia. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-505-506- 526-527-300715- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 714 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 105 to 109 expected. * WHERE...DC, portions of central, north central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MDZ502-VAZ026-WVZ502-504-300715- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Central and Eastern Allegany-Rockingham-Eastern Grant-Eastern Mineral- 714 PM EDT Tue Jul 29 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 8 PM EDT WEDNESDAY... * WHAT...Heat index values up to 101 expected. * WHERE...In Maryland, Central and Eastern Allegany County. In Virginia, Rockingham County. In West Virginia, Eastern Grant and Eastern Mineral Counties. * WHEN...From 11 AM to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ BRO Action: Continued Issued At: 2025-07-30 01:31:11 794 WWUS71 KLWX 300630 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 230 AM EDT Wed Jul 30 2025 DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-505-506- 526-527-301430- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 230 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 105 to 109 expected. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MDZ003-502-VAZ026>031-WVZ050>053-055-502-504-301430- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Washington-Central and Eastern Allegany-Rockingham-Shenandoah- Frederick VA-Page-Warren-Clarke-Hampshire-Morgan-Berkeley- Jefferson-Hardy-Eastern Grant-Eastern Mineral- 230 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 104 expected. * WHERE...Portions of north central and western Maryland, northwest and western Virginia, and eastern and panhandle West Virginia. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ KLW Action: Continued Issued At: 2025-07-30 01:31:11 794 WWUS71 KLWX 300630 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 230 AM EDT Wed Jul 30 2025 DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-505-506- 526-527-301430- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 230 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 105 to 109 expected. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MDZ003-502-VAZ026>031-WVZ050>053-055-502-504-301430- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Washington-Central and Eastern Allegany-Rockingham-Shenandoah- Frederick VA-Page-Warren-Clarke-Hampshire-Morgan-Berkeley- Jefferson-Hardy-Eastern Grant-Eastern Mineral- 230 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 104 expected. * WHERE...Portions of north central and western Maryland, northwest and western Virginia, and eastern and panhandle West Virginia. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ KLW Action: Area Extended Issued At: 2025-07-30 09:02:31 540 WWUS71 KLWX 301402 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1002 AM EDT Wed Jul 30 2025 VAZ040-051-501-502-310000- /O.EXA.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Rappahannock-Culpeper-Northern Fauquier-Southern Fauquier- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 105 expected. * WHERE...Culpeper, Northern Fauquier, Southern Fauquier, and Rappahannock Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ WVZ506-310000- /O.EXA.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Eastern Pendleton- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 100 expected. * WHERE...Eastern Pendleton County. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-505-506- 526-527-310000- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 109 expected. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MDZ003-502-VAZ026>031-WVZ050>053-055-502-504-310000- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Washington-Central and Eastern Allegany-Rockingham-Shenandoah- Frederick VA-Page-Warren-Clarke-Hampshire-Morgan-Berkeley- Jefferson-Hardy-Eastern Grant-Eastern Mineral- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 104 expected. * WHERE...Portions of north central and western Maryland, northwest and western Virginia, and eastern and panhandle West Virginia. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ KR Action: Continued Issued At: 2025-07-30 09:02:31 540 WWUS71 KLWX 301402 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1002 AM EDT Wed Jul 30 2025 VAZ040-051-501-502-310000- /O.EXA.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Rappahannock-Culpeper-Northern Fauquier-Southern Fauquier- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 105 expected. * WHERE...Culpeper, Northern Fauquier, Southern Fauquier, and Rappahannock Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ WVZ506-310000- /O.EXA.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Eastern Pendleton- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 100 expected. * WHERE...Eastern Pendleton County. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-505-506- 526-527-310000- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 109 expected. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MDZ003-502-VAZ026>031-WVZ050>053-055-502-504-310000- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Washington-Central and Eastern Allegany-Rockingham-Shenandoah- Frederick VA-Page-Warren-Clarke-Hampshire-Morgan-Berkeley- Jefferson-Hardy-Eastern Grant-Eastern Mineral- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 104 expected. * WHERE...Portions of north central and western Maryland, northwest and western Virginia, and eastern and panhandle West Virginia. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ KR Action: Area Extended Issued At: 2025-07-30 09:02:31 540 WWUS71 KLWX 301402 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1002 AM EDT Wed Jul 30 2025 VAZ040-051-501-502-310000- /O.EXA.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Rappahannock-Culpeper-Northern Fauquier-Southern Fauquier- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 105 expected. * WHERE...Culpeper, Northern Fauquier, Southern Fauquier, and Rappahannock Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ WVZ506-310000- /O.EXA.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Eastern Pendleton- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 100 expected. * WHERE...Eastern Pendleton County. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-505-506- 526-527-310000- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 109 expected. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MDZ003-502-VAZ026>031-WVZ050>053-055-502-504-310000- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Washington-Central and Eastern Allegany-Rockingham-Shenandoah- Frederick VA-Page-Warren-Clarke-Hampshire-Morgan-Berkeley- Jefferson-Hardy-Eastern Grant-Eastern Mineral- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 104 expected. * WHERE...Portions of north central and western Maryland, northwest and western Virginia, and eastern and panhandle West Virginia. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ KR Action: Continued Issued At: 2025-07-30 09:02:31 540 WWUS71 KLWX 301402 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1002 AM EDT Wed Jul 30 2025 VAZ040-051-501-502-310000- /O.EXA.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Rappahannock-Culpeper-Northern Fauquier-Southern Fauquier- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 105 expected. * WHERE...Culpeper, Northern Fauquier, Southern Fauquier, and Rappahannock Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ WVZ506-310000- /O.EXA.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Eastern Pendleton- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 100 expected. * WHERE...Eastern Pendleton County. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-505-506- 526-527-310000- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard- Northwest Harford-Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King George-Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 109 expected. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central and northern Virginia. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MDZ003-502-VAZ026>031-WVZ050>053-055-502-504-310000- /O.CON.KLWX.HT.Y.0012.250730T1500Z-250731T0000Z/ Washington-Central and Eastern Allegany-Rockingham-Shenandoah- Frederick VA-Page-Warren-Clarke-Hampshire-Morgan-Berkeley- Jefferson-Hardy-Eastern Grant-Eastern Mineral- 1002 AM EDT Wed Jul 30 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 104 expected. * WHERE...Portions of north central and western Maryland, northwest and western Virginia, and eastern and panhandle West Virginia. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ KR Action: Cancelled Issued At: 2025-07-30 18:07:47 960 WWUS71 KLWX 302307 NPWLWX URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 707 PM EDT Wed Jul 30 2025 DCZ001-MDZ003>006-008-011-013-014-016>018-502>508-VAZ026>031-040-051- 053>057-501-502-505-506-526-527-WVZ050>053-055-502-504-506-310015- /O.CAN.KLWX.HT.Y.0012.000000T0000Z-250731T0000Z/ District of Columbia-Washington-Frederick MD-Carroll-Northern Baltimore-Cecil-Southern Baltimore-Prince Georges-Anne Arundel- Charles-St. Marys-Calvert-Central and Eastern Allegany-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard- Central and Southeast Howard-Northwest Harford-Southeast Harford- Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke- Rappahannock-Culpeper-Fairfax-Arlington/Falls Church/Alexandria- Stafford-Spotsylvania-King George-Northern Fauquier-Southern Fauquier-Western Loudoun-Eastern Loudoun-Northwest Prince William- Central and Southeast Prince William/Manassas/Manassas Park- Hampshire-Morgan-Berkeley-Jefferson-Hardy-Eastern Grant-Eastern Mineral-Eastern Pendleton- 707 PM EDT Wed Jul 30 2025 ...HEAT ADVISORY IS CANCELLED... Heat index values have dropped below critical thresholds. $$ BRO | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||