⚠️ Extreme Heat Warning – Cooke; Grayson; Fannin; Lamar; Denton; Collin; Hunt; Delta; Hopkins; Tarrant; Dallas; Rockwall; Kaufman; Van Zandt; Rains – Tuesday, July 21, 2026

Extreme Heat Warning issued July 21 at 12:38AM CDT until July 21 at 8:00PM CDT by NWS Fort Worth TX

Details

* WHAT…Dangerously hot conditions with temperatures up to 105 and
heat index values up to 112 expected.

* WHERE…Portions of north central and northeast Texas.

* WHEN…From noon today to 8 PM CDT this evening.

* IMPACTS…Heat related illnesses increase significantly during
extreme heat and high humidity events.

Instructions

Take extra precautions when outside by staying hydrated, wearing
lightweight and loose fitting clothing, and limiting strenuous
activities to the early morning or evening. Check up on relatives and
neighbors. Never leave young children or pets in an enclosed vehicle,
even for a short time, as temperatures can quickly rise to
life-threatening levels.

Know the signs and symptoms of heat exhaustion and heat stroke. To
reduce risk when outdoors, 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 911 ASAP if you or someone you know is exhibiting signs of heat
stroke.

Extreme heat is dangerous, especially for those without reliable
shelter. Limit time outdoors during the hottest time of the day,
typically from 2 to 7 PM, rest in the shade when possible, and drink
plenty of water. Locate nearby cooling centers through local
resources or dial 2-1-1 in Texas.

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