Texas Moderate Heat Advisory | Effective 08/19/2026 21:34

Headline: 
Heat Advisory issued August 19 at 11:34PM CDT until August 21 at 7:00PM CDT by NWS Houston/Galveston TX
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
August 19, 2026 - 9:34pm
Expires: 
August 20, 2026 - 9:45am
Description: 
* WHAT...Heat index values up to 110 expected. * WHERE...Portions of south central and southeast Texas. * WHEN...From noon Thursday to 7 PM CDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Instruction: 
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.
Area Description: 
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
Forcast Office: 
NWS Houston/Galveston TX
Sender: 
w-nws.webmaster@noaa.gov