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Extreme Heat Warning for Harmon, Jackson, Tillman and Other Counties Through 8 PM Monday

The National Weather Service has extended the Extreme Heat Warning for Monday, now in effect from noon to 8 PM CDT for parts of Oklahoma and Texas.

4 reports on this incident · first at Aug 23, 2026, 1:55 p.m. ET

By AI ReporterWritten Aug 23, 2026, 2:09 p.m. ET
Developing · checked 2h ago

Hazard products are revised and cancelled as conditions change. Check the National Weather Service for the current alert before acting on this report.

We last searched for new coverage of this at Aug 23, 2026, 2:09 p.m. ET — checked 2h ago.

The National Weather Service in Norman, Oklahoma, has extended the for Monday, August 24, 2026. The is in effect from noon to 8 PM CDT Monday, and will lift at 8 PM CDT. The covers portions of southern and southwest Oklahoma and northern Texas, including the counties of Harmon, Jackson, Tillman, Cotton, Jefferson, Hardeman, Foard, Wilbarger, Wichita, Knox, Baylor, Archer, and Clay. Cities in the affected area include Vernon, Frederick, Scotland, Crowell, Ryan, Hollis, Temple, Quanah, Knox City, Seymour, Walters, Munday, Lakeside City, Ringling, Sheppard AFB, Holliday, Henrietta, Waurika, Altus, Wichita Falls, and Archer City. Dangerously hot conditions are expected, with heat index values or temperatures up to 114 degrees Fahrenheit. The was issued at 12:47 PM CDT on Sunday, August 23. Heat-related illnesses increase significantly during extreme heat and high humidity events. Officials advise drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking on relatives and neighbors. Do not leave young children and pets in unattended vehicles, as car interiors will reach lethal temperatures in a matter of minutes.

Earlier reports

  1. Aug 23, 2026, 2:05 p.m. ET

    Extreme Heat Warning for Harmon, Jackson, Tillman Starts Monday Noon, Ends 8 PM

    The National Weather Service in Norman, Oklahoma, has issued an Extreme Heat Warning for Monday, August 24, 2026, from noon to 8 PM CDT. The warning covers portions of southern and southwest Oklahoma and northern Texas, including the cities of Vernon, Frederick, Scotland, Crowell, Ryan, Hollis, Temple, Quanah, Knox City, Seymour, Walters, Munday, Lakeside City, Ringling, Sheppard AFB, Holliday, Henrietta, Waurika, Altus, Wichita Falls, and Archer City.

    The warning will be in effect from noon to 8 PM CDT on Monday for 13 counties: Harmon, Jackson, Tillman, Cotton, Jefferson, Hardeman, Foard, Wilbarger, Wichita, Knox, Baylor, Archer, and Clay. Dangerously hot conditions are expected, with heat index values or temperatures up to 114 degrees Fahrenheit.

    The National Weather Service advises drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking on relatives and neighbors. Do not leave young children and pets in unattended vehicles, as car interiors will reach lethal temperatures in a matter of minutes. Heat-related illnesses increase significantly during extreme heat and high humidity events.

  2. Aug 23, 2026, 1:59 p.m. ET

    Extreme Heat Warning for Harmon, Jackson, Tillman and Other Counties Starts Monday Noon

    The National Weather Service in Norman, Oklahoma, warns that heat-related illnesses increase significantly during extreme heat and high humidity events. The Extreme Heat Warning is in effect from noon to 8 PM CDT Monday, August 24, 2026, for portions of southern and southwest Oklahoma and northern Texas, including Harmon, Jackson, Tillman, Cotton, Jefferson, Hardeman, Foard, Wilbarger, Wichita, Knox, Baylor, Archer, and Clay counties. Cities affected include Vernon, Frederick, Scotland, Crowell, Ryan, Hollis, Temple, Quanah, Knox City, Seymour, Walters, Munday, Lakeside City, Ringling, Sheppard AFB, Holliday, Henrietta, Waurika, Altus, Wichita Falls, and Archer City.

    The warning begins at noon CDT Monday and expires at 8 PM CDT Monday. Dangerously hot conditions with heat index values or temperatures up to 114 are expected. The warning was issued at 12:47 PM CDT on August 23, 2026.

    Officials advise drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking on relatives and neighbors. They also warn not to leave young children and pets in unattended vehicles, as car interiors will reach lethal temperatures in a matter of minutes.

  3. Aug 23, 2026, 1:55 p.m. ETFirst report

    Extreme Heat Warning for Harmon, Jackson, Tillman and Other Counties from Noon to 8 PM Monday

    The National Weather Service in Norman, Oklahoma, has issued an Extreme Heat Warning for Monday, August 24, 2026, from noon to 8 p.m. CDT. The warning covers portions of southern and southwest Oklahoma and northern Texas, including the cities of Vernon, Frederick, Scotland, Crowell, Ryan, Hollis, Temple, Quanah, Knox City, Seymour, Walters, Munday, Lakeside City, Ringling, Sheppard AFB, Holliday, Henrietta, Waurika, Altus, Wichita Falls, and Archer City.

    The warning will be in effect for 13 counties: Harmon, Jackson, Tillman, Cotton, Jefferson, Hardeman, Foard, Wilbarger, Wichita, Knox, Baylor, Archer, and Clay. Dangerously hot conditions are expected, with heat index values or temperatures up to 114 degrees Fahrenheit. The National Weather Service warns that heat-related illnesses increase significantly during extreme heat and high humidity events.

    Residents are advised to drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check on relatives and neighbors. Do not leave young children and pets in unattended vehicles, as car interiors will reach lethal temperatures in a matter of minutes.

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  1. Version 123 Aug 2026, 18:09current

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  2. Version 123 Aug 2026, 17:59current

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  3. Version 123 Aug 2026, 17:55current

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  4. Version 123 Aug 2026, 18:05current

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