797 WWUS74 KEWX 232220 NPWEWX URGENT - WEATHER MESSAGE National Weather Service Austin/San Antonio TX 520 PM CDT Sun Aug 23 2026 TXZ171>173-192-193-250000- /O.EXT.KEWX.XH.W.0003.000000T0000Z-260825T0000Z/ /O.EXT.KEWX.HT.Y.0008.260825T0000Z-260827T0000Z/ Llano-Burnet-Williamson-Travis-Bastrop- Including the cities of Burnet, Austin, Llano, Georgetown, and Bastrop 520 PM CDT Sun Aug 23 2026 ...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 7 PM CDT MONDAY... ...HEAT ADVISORY IN EFFECT FROM 7 PM MONDAY TO 7 PM CDT WEDNESDAY... * WHAT...Dangerously hot conditions with temperatures up to 107 and heat index values up to 110 are expected Monday afternoon. Temperatures up to 105 are expected Tuesday and Wednesday. * WHERE...Bastrop, Burnet, Llano, Travis, and Williamson Counties. * WHEN...For the Extreme Heat Warning, until 7 PM CDT Monday. For the Heat Advisory, from 7 PM Monday to 7 PM CDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. 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. 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. && $$ TXZ194-208-209-223-225-250000- /O.CON.KEWX.XH.W.0003.000000T0000Z-260824T0000Z/ /O.CON.KEWX.HT.Y.0008.260824T0000Z-260827T0000Z/ Lee-Caldwell-Fayette-Gonzales-Lavaca- Including the cities of Hallettsville, La Grange, Giddings, Gonzales, and Lockhart 520 PM CDT Sun Aug 23 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT WEDNESDAY... * WHAT...Dangerously hot conditions with temperatures up to 107 and heat index values up to 110 this afternoon. Temperatures up to 105 are expected Monday through Wednesday. * WHERE...Caldwell, Fayette, Gonzales, Lavaca, and Lee Counties. * WHEN...For the Extreme Heat Warning, until 7 PM CDT this evening. For the Heat Advisory, until 7 PM CDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ TXZ187-189-190-204-219-240000- /O.CON.KEWX.HT.Y.0007.000000T0000Z-260824T0000Z/ Bandera-Kendall-Blanco-Medina-Frio- Including the cities of Bandera, Blanco, Boerne, Pearsall, and Hondo 520 PM CDT Sun Aug 23 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Temperatures up to 105 and heat index values up to 107 expected. * WHERE...Bandera, Blanco, Frio, Kendall, and Medina Counties. * WHEN...Until 7 PM CDT 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. 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. && $$ TXZ191-205>207-220>222-224-250000- /O.CON.KEWX.HT.Y.0007.000000T0000Z-260827T0000Z/ Hays-Bexar-Comal-Guadalupe-Atascosa-Wilson-Karnes-De Witt- Including the cities of Cuero, Seguin, San Antonio, Floresville, Karnes City, Pleasanton, San Marcos, and New Braunfels 520 PM CDT Sun Aug 23 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT WEDNESDAY... * WHAT...Temperatures up to 105 and heat index values up to 110 expected. * WHERE...Atascosa, Bexar, Comal, De Witt, Guadalupe, Hays, Karnes, and Wilson Counties. * WHEN...Until 7 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ Tran