Weather Alerts For Thermopolis, WY

# HEADLINE -------------------- RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 10 PM MDT SUNDAY # SUMMARY -------------------- - IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. # DETAILS -------------------- AFFECTED AREA: IN CENTRAL WY FIRE ZONES 280...283. In North Central WY Fire Zones...275...276...281...282. COUNTIES AFFECTED: IN CENTRAL WY - Fremont...Natrona. In North Central WY...Big Horn...Hot Springs...Johnson...Park Washakie. - WIND: Southeast 15 to 25 mph with gusts up to 35 mph. - HUMIDITY: As low as 5 percent. - TEMPERATURES: Highs 100 to 110. ISSUED AT Saturday, July 11, 2026 at 9:17 AM MDT ISSUED BY National Weather Service Riverton WY HEADER URGENT - FIRE WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. # AREAS AFFECTED -------------------- Natrona County/Casper BLM, South Bighorn Basin/Worland BLM, Upper Wind River Basin/Wind River Basin, Cody Foothills, Johnson County/Casper BLM, North Bighorn Basin/Worland BLM

# HEADLINE -------------------- EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM MDT MONDAY # DETAILS -------------------- WHAT Dangerously hot conditions with temperatures from 100 to 110 degrees below 6,000 feet and 90 to 100 degrees between 6,000 and 7,500 feet each day. WHERE Portions of central, north central, northwest, south central, southwest, and west central Wyoming. WHEN From noon today to 9 PM MDT Monday. The hottest temperatures are expected on Sunday afternoon. IMPACTS Heat related illnesses increase significantly during extreme heat and high humidity events. ISSUED AT Saturday, July 11, 2026 at 9:14 AM MDT ISSUED BY National Weather Service Riverton WY 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 -------------------- Natrona County Lower Elevations, Southeast Bighorn Basin, Cody Foothills, East Sweetwater County, Flaming Gorge, Green Mountains and Rattlesnake Range, Jackson Hole, Lander Foothills, North Bighorn Basin, Northeast Johnson County, Rock Springs and Green River, South Lincoln County, Southeast Johnson County, Southwest Bighorn Basin, Star Valley, Upper Green River Basin, Upper Green River Basin Foothills, Upper Wind River Basin, Wind River Basin Including the cities of Greybull, Basin, Jackson, Afton, Rock Springs, Meeteetse, Ten Sleep, Casper, Riverton, Clark, Thermopolis, Lovell, Pinedale, Lander, Thayne, Shoshoni, Buffalo, Farson, Kaycee, Green River, Cokeville, Kemmerer, La Barge, Alpine, Big Piney, Dubois, Powell, Cody, Wamsutter, Star Valley Ranch, Shell, Jeffrey City, and Worland