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Home Return to list Small Craft Advisory 0045 Issued by the Baltimore / Washington Forecast Office
Action: New Issued At: 2026-03-21 18:33:02 195 WHUS71 KLWX 212332 MWWLWX URGENT - MARINE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 732 PM EDT Sat Mar 21 2026 ANZ535-536-220900- /O.NEW.KLWX.SC.Y.0045.260322T1800Z-260322T2200Z/ Tidal Potomac from Key Bridge to Indian Head MD- Tidal Potomac from Indian Head to Cobb Island MD- 732 PM EDT Sat Mar 21 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM TO 6 PM EDT SUNDAY... * WHAT...Southwest winds around 10 kt with gusts up to 20 kt. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD. * WHEN...From 2 PM to 6 PM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ DHOF Action: Continued Issued At: 2026-03-21 23:31:12 191 WHUS71 KLWX 220431 MWWLWX URGENT - MARINE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1231 AM EDT Sun Mar 22 2026 ANZ535-536-221445- /O.CON.KLWX.SC.Y.0045.260322T1800Z-260322T2200Z/ Tidal Potomac from Key Bridge to Indian Head MD- Tidal Potomac from Indian Head to Cobb Island MD- 1231 AM EDT Sun Mar 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM EDT THIS EVENING... * WHAT...Southwest winds around 10 kt with gusts up to 20 kt expected. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD. * WHEN...From 2 PM this afternoon to 6 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ BELAK Action: Continued Issued At: 2026-03-22 06:08:23 080 WHUS71 KLWX 221107 MWWLWX URGENT - MARINE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 707 AM EDT Sun Mar 22 2026 ANZ533-534-537-541>543-221400- /O.NEW.KLWX.MF.Y.0013.260322T1107Z-260322T1400Z/ Chesapeake Bay from North Beach to Drum Point MD- Chesapeake Bay from Drum Point MD to Smith Point VA- Tidal Potomac from Cobb Island MD to Smith Point VA- Choptank River to Cambridge MD and the Little Choptank River- Patuxent River to Broomes Island MD- Tangier Sound and the inland waters surrounding Bloodsworth Island- 707 AM EDT Sun Mar 22 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING... * WHAT...Dense fog will reduce visibility to 1/2 NM or less. * WHERE...Chesapeake Bay from North Beach MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, Choptank River to Cambridge MD and the Little Choptank River, Patuxent River to Broomes Island MD, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN...Until 10 AM EDT this morning. * IMPACTS...Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. && $$ ANZ535-536-221915- /O.CON.KLWX.SC.Y.0045.260322T1800Z-260322T2200Z/ Tidal Potomac from Key Bridge to Indian Head MD- Tidal Potomac from Indian Head to Cobb Island MD- 707 AM EDT Sun Mar 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM EDT THIS EVENING... * WHAT...Southwest winds 10 to 15 kt with gusts up to 20 kt expected. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD. * WHEN...From 2 PM this afternoon to 6 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-03-22 07:23:41 097 WHUS71 KLWX 221223 MWWLWX URGENT - MARINE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 823 AM EDT Sun Mar 22 2026 ANZ533-534-537-541>543-222030- /O.CON.KLWX.MF.Y.0013.000000T0000Z-260322T1400Z/ /O.NEW.KLWX.SC.Y.0046.260323T0600Z-260324T1000Z/ Chesapeake Bay from North Beach to Drum Point MD- Chesapeake Bay from Drum Point MD to Smith Point VA- Tidal Potomac from Cobb Island MD to Smith Point VA- Choptank River to Cambridge MD and the Little Choptank River- Patuxent River to Broomes Island MD- Tangier Sound and the inland waters surrounding Bloodsworth Island- 823 AM EDT Sun Mar 22 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM MONDAY TO 6 AM EDT TUESDAY... * WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to 1/2 NM or less. For the Small Craft Advisory, north to northwest winds of 10 to 20 kt with gusts up to 30 kt expected. * WHERE...Chesapeake Bay from North Beach MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, Choptank River to Cambridge MD and the Little Choptank River, Patuxent River to Broomes Island MD, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN...For the Dense Fog Advisory, until 10 AM EDT this morning. For the Small Craft Advisory, from 2 AM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. && $$ ANZ535-536-222030- /O.CON.KLWX.SC.Y.0045.260322T1800Z-260322T2200Z/ /O.NEW.KLWX.SC.Y.0046.260323T0600Z-260324T1000Z/ Tidal Potomac from Key Bridge to Indian Head MD- Tidal Potomac from Indian Head to Cobb Island MD- 823 AM EDT Sun Mar 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM EDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM MONDAY TO 6 AM EDT TUESDAY... * WHAT...For the first Small Craft Advisory, southwest winds 10 to 15 kt with gusts up to 25 kt expected. For the second Small Craft Advisory, north to northwest winds of 10 to 15 kt with gusts up to 25 kt expected. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD. * WHEN...For the first Small Craft Advisory, from 2 PM this afternoon to 6 PM EDT this evening. For the second Small Craft Advisory, from 2 AM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ530>532-538>540-222030- /O.NEW.KLWX.SC.Y.0046.260323T0600Z-260324T1000Z/ Chesapeake Bay north of Pooles Island MD- Chesapeake Bay from Pooles Island to Sandy Point MD- Chesapeake Bay from Sandy Point to North Beach MD- Patapsco River including Baltimore Harbor- Chester River to Queenstown MD-Eastern Bay- 823 AM EDT Sun Mar 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM MONDAY TO 6 AM EDT TUESDAY... * WHAT...North to northwest winds of 10 to 20 kt with gusts up to 25 kt expected. * WHERE...Chesapeake Bay north of North Beach MD, Patapsco River including Baltimore Harbor, Chester River to Queenstown MD, and Eastern Bay. * WHEN...From 2 AM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-03-22 09:08:45 526 WHUS71 KLWX 221408 MWWLWX URGENT - MARINE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1008 AM EDT Sun Mar 22 2026 ANZ533-534-537-541>543-222215- /O.EXP.KLWX.MF.Y.0013.000000T0000Z-260322T1400Z/ /O.NEW.KLWX.MF.Y.0014.260322T1408Z-260322T1600Z/ /O.CON.KLWX.SC.Y.0046.260323T0600Z-260324T1000Z/ Chesapeake Bay from North Beach to Drum Point MD- Chesapeake Bay from Drum Point MD to Smith Point VA- Tidal Potomac from Cobb Island MD to Smith Point VA- Choptank River to Cambridge MD and the Little Choptank River- Patuxent River to Broomes Island MD- Tangier Sound and the inland waters surrounding Bloodsworth Island- 1008 AM EDT Sun Mar 22 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL NOON EDT TODAY... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM MONDAY TO 6 AM EDT TUESDAY... * WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to less than 1 NM. For the Small Craft Advisory, north to northwest winds of 10 to 20 kt with gusts up to 30 kt expected. * WHERE...Chesapeake Bay from North Beach MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, Choptank River to Cambridge MD and the Little Choptank River, Patuxent River to Broomes Island MD, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN...For the Dense Fog Advisory, until noon EDT today. For the Small Craft Advisory, from 2 AM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. && $$ ANZ532-222215- /O.NEW.KLWX.MF.Y.0014.260322T1408Z-260322T1600Z/ /O.CON.KLWX.SC.Y.0046.260323T0600Z-260324T1000Z/ Chesapeake Bay from Sandy Point to North Beach MD- 1008 AM EDT Sun Mar 22 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL NOON EDT TODAY... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM MONDAY TO 6 AM EDT TUESDAY... * WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to less than 1 NM. For the Small Craft Advisory, north to northwest winds of 10 to 20 kt with gusts up to 25 kt expected. * WHERE...Chesapeake Bay from Sandy Point to North Beach MD. * WHEN...For the Dense Fog Advisory, until noon EDT today. For the Small Craft Advisory, from 2 AM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. && $$ ANZ535-536-222215- /O.CON.KLWX.SC.Y.0045.260322T1800Z-260322T2200Z/ /O.CON.KLWX.SC.Y.0046.260323T0600Z-260324T1000Z/ Tidal Potomac from Key Bridge to Indian Head MD- Tidal Potomac from Indian Head to Cobb Island MD- 1008 AM EDT Sun Mar 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM EDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM MONDAY TO 6 AM EDT TUESDAY... * WHAT...For the first Small Craft Advisory, south winds 10 to 15 kt with gusts up to 25 kt expected. For the second Small Craft Advisory, north to northwest winds of 10 to 15 kt with gusts up to 25 kt expected. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD. * WHEN...For the first Small Craft Advisory, from 2 PM this afternoon to 6 PM EDT this evening. For the second Small Craft Advisory, from 2 AM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ530-531-538>540-222215- /O.CON.KLWX.SC.Y.0046.260323T0600Z-260324T1000Z/ Chesapeake Bay north of Pooles Island MD- Chesapeake Bay from Pooles Island to Sandy Point MD- Patapsco River including Baltimore Harbor- Chester River to Queenstown MD-Eastern Bay- 1008 AM EDT Sun Mar 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM MONDAY TO 6 AM EDT TUESDAY... * WHAT...North to northwest winds of 10 to 20 kt with gusts up to 25 kt expected. * WHERE...Chesapeake Bay north of Sandy Point MD, Patapsco River including Baltimore Harbor, Chester River to Queenstown MD, and Eastern Bay. * WHEN...From 2 AM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-03-22 11:27:49 801 WHUS71 KLWX 221627 MWWLWX URGENT - MARINE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1227 PM EDT Sun Mar 22 2026 ANZ532>534-537-541>543-230030- /O.EXP.KLWX.MF.Y.0014.000000T0000Z-260322T1600Z/ /O.CON.KLWX.SC.Y.0046.260323T0600Z-260324T1000Z/ Chesapeake Bay from Sandy Point to North Beach MD- Chesapeake Bay from North Beach to Drum Point MD- Chesapeake Bay from Drum Point MD to Smith Point VA- Tidal Potomac from Cobb Island MD to Smith Point VA- Choptank River to Cambridge MD and the Little Choptank River- Patuxent River to Broomes Island MD- Tangier Sound and the inland waters surrounding Bloodsworth Island- 1227 PM EDT Sun Mar 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM MONDAY TO 6 AM EDT TUESDAY... ...DENSE FOG ADVISORY HAS EXPIRED... * WHAT...North to northwest winds of 10 to 20 kt with gusts up to 30 kt expected. * WHERE...Chesapeake Bay from Sandy Point MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, Choptank River to Cambridge MD and the Little Choptank River, Patuxent River to Broomes Island MD, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN...From 2 AM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ535-536-230030- /O.CON.KLWX.SC.Y.0045.260322T1800Z-260322T2200Z/ /O.CON.KLWX.SC.Y.0046.260323T0600Z-260324T1000Z/ Tidal Potomac from Key Bridge to Indian Head MD- Tidal Potomac from Indian Head to Cobb Island MD- 1227 PM EDT Sun Mar 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM MONDAY TO 6 AM EDT TUESDAY... * WHAT...For the first Small Craft Advisory, south winds 10 to 15 kt with gusts up to 25 kt expected. For the second Small Craft Advisory, north to northwest winds of 10 to 15 kt with gusts up to 25 kt expected. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD. * WHEN...For the first Small Craft Advisory, until 6 PM EDT this evening. For the second Small Craft Advisory, from 2 AM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ530-531-538>540-230030- /O.CON.KLWX.SC.Y.0046.260323T0600Z-260324T1000Z/ Chesapeake Bay north of Pooles Island MD- Chesapeake Bay from Pooles Island to Sandy Point MD- Patapsco River including Baltimore Harbor- Chester River to Queenstown MD-Eastern Bay- 1227 PM EDT Sun Mar 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM MONDAY TO 6 AM EDT TUESDAY... * WHAT...North to northwest winds of 10 to 20 kt with gusts up to 25 kt expected. * WHERE...Chesapeake Bay north of Sandy Point MD, Patapsco River including Baltimore Harbor, Chester River to Queenstown MD, and Eastern Bay. * WHEN...From 2 AM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Expired Issued At: 2026-03-22 17:16:29 101 WHUS71 KLWX 222215 MWWLWX URGENT - MARINE WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 615 PM EDT Sun Mar 22 2026 ANZ535-536-230900- /O.EXP.KLWX.SC.Y.0045.000000T0000Z-260322T2200Z/ /O.CON.KLWX.SC.Y.0046.260323T0600Z-260324T1000Z/ Tidal Potomac from Key Bridge to Indian Head MD- Tidal Potomac from Indian Head to Cobb Island MD- 615 PM EDT Sun Mar 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM MONDAY TO 6 AM EDT TUESDAY... ...SMALL CRAFT ADVISORY HAS EXPIRED FOR THIS AFTERNOON... * WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD. * WHEN...From 2 AM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ530>534-537>543-230900- /O.CON.KLWX.SC.Y.0046.260323T0600Z-260324T1000Z/ Chesapeake Bay north of Pooles Island MD- Chesapeake Bay from Pooles Island to Sandy Point MD- Chesapeake Bay from Sandy Point to North Beach MD- Chesapeake Bay from North Beach to Drum Point MD- Chesapeake Bay from Drum Point MD to Smith Point VA- Tidal Potomac from Cobb Island MD to Smith Point VA- Patapsco River including Baltimore Harbor- Chester River to Queenstown MD-Eastern Bay- Choptank River to Cambridge MD and the Little Choptank River- Patuxent River to Broomes Island MD- Tangier Sound and the inland waters surrounding Bloodsworth Island- 615 PM EDT Sun Mar 22 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM MONDAY TO 6 AM EDT TUESDAY... * WHAT...North winds 15 to 20 kt with gusts up to 30 kt. * WHERE...Chesapeake Bay and adjoining estuaries north of Smith Point VA, and Tidal Potomac from Cobb Island MD to Smith Point VA. * WHEN...From 2 AM Monday to 6 AM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ DHOF | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||