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Heat Advisory — Montague, TX, Cooke, TX, Grayson, TX, Fannin, TX, Lamar, TX, Jack, TX, Wise, TX, Denton, TX, Collin, TX, Hunt, TX, Delta, TX, Hopkins, TX, Palo Pinto, TX, Parker, TX, Tarrant, TX, Dallas, TX, Rockwall, TX, Kaufman, TX, Johnson, TX, Ellis, TX
Issued
1:00 PM CDT · Tue, Aug 11 2026
Expires
8:00 PM CDT · Tue, Aug 11 2026
Issuing Office
NWS KFWD

Affected Areas

Montague, TX Cooke, TX Grayson, TX Fannin, TX Lamar, TX Jack, TX Wise, TX Denton, TX Collin, TX Hunt, TX Delta, TX Hopkins, TX Palo Pinto, TX Parker, TX Tarrant, TX Dallas, TX Rockwall, TX Kaufman, TX Johnson, TX Ellis, TX

Official Bulletin

109
WWUS74 KFWD 101713
NPWFWD

URGENT - WEATHER MESSAGE
National Weather Service Fort Worth TX
1213 PM CDT Mon Aug 10 2026

TXZ091>095-101>107-116>121-133-134-110115-
/O.NEW.KFWD.HT.Y.0023.260811T1800Z-260812T0100Z/
Montague-Cooke-Grayson-Fannin-Lamar-Jack-Wise-Denton-Collin-Hunt-
Delta-Hopkins-Palo Pinto-Parker-Tarrant-Dallas-Rockwall-Kaufman-
Johnson-Ellis-
Including the cities of Bowie, Nocona, Gainesville, Sherman,
Denison, Bonham, Paris, Jacksboro, Decatur, Bridgeport,
Carrollton, Denton, Lewisville, Flower Mound, Plano, McKinney,
Allen, Frisco, Greenville, Commerce, Cooper, Sulphur Springs,
Mineral Wells, Weatherford, Briar, Fort Worth, Arlington, Dallas,
Rockwall, Heath, Terrell, Kaufman, Forney, Cleburne, Burleson,
Waxahachie, Ennis, and Midlothian
1213 PM CDT Mon Aug 10 2026

...HEAT ADVISORY IN EFFECT FROM 1 PM TO 8 PM CDT TUESDAY...

* WHAT...Heat index values up to 108 expected.

* WHERE...Portions of north central and northeast Texas.

* WHEN...From 1 PM 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.

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.

&&

$$