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Home Return to list Heat Advisory 0001 Issued by the Houston / Galveston Forecast Office
Action: New Issued At: 2026-06-17 12:30:21 144 WWUS74 KHGX 171729 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 1229 PM CDT Wed Jun 17 2026 TXZ163-164-176>179-195>200-210>214-226-227-235>238-300-313- 335>338-436>439-181030- /O.NEW.KHGX.HT.Y.0001.260618T1600Z-260620T0300Z/ Houston-Trinity-Madison-Walker-San Jacinto-Polk-Burleson-Brazos- Washington-Grimes-Montgomery-Northern Liberty-Colorado-Austin- Waller-Inland Harris-Chambers-Wharton-Fort Bend-Inland Jackson- Inland Matagorda-Inland Brazoria-Inland Galveston- Southern Liberty-Coastal Harris-Coastal Jackson-Coastal Matagorda- Coastal Brazoria-Coastal Galveston-Matagorda Islands- Brazoria Islands-Galveston Island-Bolivar Peninsula- Including the cities of Crockett, Trinity, Groveton, Madisonville, Huntsville, Shepherd, Coldspring, Livingston, Corrigan, Caldwell, Somerville, College Station, Bryan, Brenham, Navasota, Conroe, The Woodlands, Liberty, Cleveland, Dayton, Columbus, Eagle Lake, Weimar, Sealy, Bellville, Hempstead, Prairie View, Brookshire, Waller, Houston, Winnie, Mont Belvieu, Anahuac, Stowell, Old River-Winfree, El Campo, Wharton, Missouri City, Mission Bend, Sugar Land, Rosenberg, First Colony, Pecan Grove, Edna, Ganado, Bay City, Pearland, Alvin, Angleton, League City, Friendswood, Devers, Pasadena, Baytown, Palacios, Lake Jackson, Freeport, Clute, Texas City, Dickinson, La Marque, Surfside Beach, and Galveston 1229 PM CDT Wed Jun 17 2026 ...HEAT ADVISORY IN EFFECT FROM 11 AM THURSDAY TO 10 PM CDT FRIDAY... * WHAT...Heat index values of 107 to 114 degrees Fahrenheit (41 to 45 degrees Celsius) expected during the late morning to early evening hours on Thursday and Friday. * WHERE...Portions of south central and southeast Texas. * WHEN...From 11 AM Thursday to 10 PM CDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. 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. && $$ Action: Continued Issued At: 2026-06-18 00:09:13 846 WWUS74 KHGX 180509 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 1209 AM CDT Thu Jun 18 2026 TXZ163-164-176>179-195>200-210>214-226-227-235>238-300-313-335>338- 436>439-181315- /O.CON.KHGX.HT.Y.0001.260618T1600Z-260620T0300Z/ Houston-Trinity-Madison-Walker-San Jacinto-Polk-Burleson-Brazos- Washington-Grimes-Montgomery-Northern Liberty-Colorado-Austin- Waller-Inland Harris-Chambers-Wharton-Fort Bend-Inland Jackson- Inland Matagorda-Inland Brazoria-Inland Galveston-Southern Liberty-Coastal Harris-Coastal Jackson-Coastal Matagorda-Coastal Brazoria-Coastal Galveston-Matagorda Islands-Brazoria Islands- Galveston Island-Bolivar Peninsula- Including the cities of Dayton, Waller, Sugar Land, Clute, Wharton, Mont Belvieu, College Station, First Colony, La Marque, Coldspring, Stowell, Cleveland, Surfside Beach, Galveston, Angleton, Caldwell, Madisonville, Somerville, Eagle Lake, Sealy, Houston, Ganado, Old River-Winfree, Livingston, Missouri City, Dickinson, Hempstead, Brookshire, Brenham, Alvin, Winnie, Freeport, Devers, Corrigan, Prairie View, Bryan, Bellville, Lake Jackson, Texas City, Friendswood, Columbus, El Campo, Rosenberg, Shepherd, Pearland, Anahuac, Mission Bend, Weimar, Crockett, Pecan Grove, Huntsville, Baytown, Palacios, The Woodlands, Edna, League City, Pasadena, Groveton, Conroe, Liberty, Bay City, Trinity, and Navasota 1209 AM CDT Thu Jun 18 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 10 PM CDT FRIDAY... * WHAT...Heat index values of 107 to 112 degrees Fahrenheit (41 to 44 degrees Celsius) expected. * WHERE...Portions of south central and southeast Texas. * WHEN...From 11 AM this morning to 10 PM CDT Friday. * 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. && $$ DL Action: Cancelled Issued At: 2026-06-18 09:41:33 201 WWUS74 KHGX 181440 NPWHGX URGENT - WEATHER MESSAGE National Weather Service Houston/Galveston TX 940 AM CDT Thu Jun 18 2026 TXZ163-164-176>179-195>200-210>214-226-227-235>238-300-313-335>338- 436>439-181545- /O.CAN.KHGX.HT.Y.0001.260618T1600Z-260620T0300Z/ Houston-Trinity-Madison-Walker-San Jacinto-Polk-Burleson-Brazos- Washington-Grimes-Montgomery-Northern Liberty-Colorado-Austin- Waller-Inland Harris-Chambers-Wharton-Fort Bend-Inland Jackson- Inland Matagorda-Inland Brazoria-Inland Galveston-Southern Liberty-Coastal Harris-Coastal Jackson-Coastal Matagorda-Coastal Brazoria-Coastal Galveston-Matagorda Islands-Brazoria Islands- Galveston Island-Bolivar Peninsula- Including the cities of Somerville, Clute, Sugar Land, Anahuac, La Marque, Edna, Old River-Winfree, Shepherd, Columbus, Missouri City, Lake Jackson, Winnie, Galveston, Freeport, Alvin, Trinity, Waller, College Station, Devers, Corrigan, The Woodlands, Dayton, Liberty, Mont Belvieu, Stowell, Palacios, Dickinson, Angleton, Navasota, Coldspring, First Colony, Bay City, Groveton, Weimar, Sealy, Brookshire, Brenham, Texas City, Prairie View, Bryan, Pearland, Surfside Beach, Livingston, Conroe, Pecan Grove, Eagle Lake, Wharton, Baytown, Mission Bend, Friendswood, Huntsville, Crockett, Pasadena, Cleveland, Hempstead, Bellville, El Campo, Houston, Ganado, Caldwell, Madisonville, League City, and Rosenberg 940 AM CDT Thu Jun 18 2026 ...HEAT ADVISORY IS CANCELLED... The Heat Advisory is being upgraded to an Extreme Heat Warning for today. The Heat Advisory will now be in effect from 8PM tonight through 8PM on Saturday evening. $$ JM | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||