Weather Alerts For Seymour, TX

# HEADLINE -------------------- HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM TO 8 PM CDT THURSDAY # DETAILS -------------------- WHAT For the first Heat Advisory, heat index values up to around 110. For the second Heat Advisory, heat index values up to 109 expected. WHERE In Oklahoma, Jefferson and Cotton Counties. In Texas, Archer, Baylor, Clay, Foard, Knox, Wichita, and Wilbarger Counties. WHEN For the first Heat Advisory, until 8 PM CDT this evening. For the second Heat Advisory, from 1 PM to 8 PM CDT Thursday. IMPACTS Hot temperatures and high humidity may cause heat illnesses. ISSUED AT Wednesday, June 17, 2026 at 3:29 PM CDT ISSUED BY National Weather Service Norman OK HEADER URGENT - WEATHER MESSAGE # 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. # AREAS AFFECTED -------------------- Archer, Baylor, Clay, Cotton, Foard, Jefferson, Knox, Wichita, Wilbarger Including the cities of Henrietta, Archer City, Temple, Walters, Waurika, Vernon, Wichita Falls, Seymour, Holliday, Lakeside City, Scotland, Munday, Ryan, Crowell, Ringling, Sheppard AFB, and Knox City