⚠️ Heat Advisory – 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 – Monday, July 20, 2026

Heat Advisory issued July 20 at 1:00PM CDT until July 21 at 8:00PM CDT by NWS Houston/Galveston TX

Details

* WHAT…Heat index values up to 108 expected.

* WHERE…Portions of south central and southeast Texas.

* WHEN…From 11 AM to 8 PM CDT Tuesday.

* IMPACTS…Hot temperatures and high humidity will increase the
risk for heat-related illnesses to occur, particularly for those
working or participating in outdoor activities.

Instructions

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.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.