
Sunday Storms Could Become Severe Over the Plains
An area of low pressure will travel over the Plains today, causing the potential for strong to severe thunderstorms to develop, mainly in the afternoon and evening hours.
# HEADLINE -------------------- RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING # DETAILS -------------------- AFFECTED AREA: IN CENTRAL WY FIRE ZONES 280...283...285...288...289...300. In North Central WY Fire Zones...275...276...281...282...287. In Northwest WY Fire Zones...140...286. In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. COUNTIES AFFECTED: IN CENTRAL WY Fremont...Natrona. In North Central WY...Big Horn...Hot Springs...Johnson...Park Washakie. In Northwest WY...Yellowstone National Park. In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. IMPACTS: LOW HUMIDITIES - Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. - WIND: West 10 to 20 mph with gusts up to 30 mph. - HUMIDITY: As low as 8 percent. - TEMPERATURES: Highs in the 90s in the lower elevations. Highs in the 80s in the mountains. ISSUED AT Sunday, August 9, 2026 at 12:55 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 -------------------- Absaroka Mountains/North Shoshone NF, Cody Foothills, East Wind River Mountains/South Shoshone NF, Granite/Green/Ferris/Rattlesnake Mountains, Natrona County/Casper BLM, South Bighorn Basin/Worland BLM, Sweetwater County/Rock Springs BLM/Flaming Gorge NRA, Upper Green River Basin/Rock Springs BLM, Upper Wind River Basin/Wind River Basin, Casper Mountain, Johnson County/Casper BLM, Lincoln and Uinta Counties/Lower Elevations, North Bighorn Basin/Worland BLM, Owl Creek Mountains, South Bighorn Mountains, Yellowstone National Park
# HEADLINE -------------------- AIR QUALITY ALERT IN EFFECT UNTIL NOON MDT MONDAY # SUMMARY -------------------- The following message is transmitted on behalf of the Wyoming Department of Environmental Quality, Air Quality Division, and the Wyoming Department of Health. # DETAILS -------------------- WHAT Air Quality Alert for Wildfire Smoke. WHERE All of Western and Central Wyoming WHEN Now through Noon Monday. IMPACTS Smoke from western United States wildfires continues to be observed across much of western and central Wyoming. The smoke is limiting visibilities at times. HEALTH INFORMATION The Wyoming Department of Health recommends that the elderly, young children, and individuals with respiratory problems avoid excessive physical exertion and minimize outdoor activities during this time. Wildfire smoke is made up of a variety of pollutants, including particulate matter and ozone, which can cause respiratory health effects. Although these people are most susceptible to health impacts, the Department of Health also advises that everyone should avoid prolonged exposure to poor air quality conditions. CURRENT CONDITIONS The Wyoming Department of Environmental Quality, Air Quality Division offers near real-time air quality data for Wyoming's monitoring stations and health effects information to help the public interpret current conditions. Current air quality conditions across the state of Wyoming can be found at http://www.wyvisnet.com/. ISSUED AT Saturday, August 8, 2026 at 11:39 AM MDT ISSUED BY Relayed by National Weather Service Riverton WY HEADER Air Quality Alert Message # AREAS AFFECTED -------------------- Bighorn Mountains Southeast, Green Mountains and Rattlesnake Range, Jackson Hole, Natrona County Lower Elevations, North Bighorn Basin, Owl Creek and Bridger Mountains, Rock Springs and Green River, Salt River and Wyoming Ranges, Southeast Johnson County, Upper Green River Basin, Upper Wind River Basin, Absaroka Mountains, Bighorn Mountains West, Casper Mountain, Cody Foothills, East Sweetwater County, Flaming Gorge, Lander Foothills, Northeast Johnson County, South Lincoln County, Southeast Bighorn Basin, Southwest Bighorn Basin, Star Valley, Teton and Gros Ventre Mountains, Upper Green River Basin Foothills, Wind River Basin, Wind River Mountains East, Wind River Mountains West, Yellowstone National Park Including the cities of Lake, Mammoth, Old Faithful, Clark, Cody, Meeteetse, Basin, Greybull, Lovell, Powell, Shell, Thermopolis, Ten Sleep, Worland, Buffalo, Kaycee, Jackson, Dubois, Riverton, Shoshoni, Lander, Jeffrey City, Casper, Afton, Alpine, Star Valley Ranch, Thayne, Pinedale, La Barge, Big Piney, Farson, Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter












