Riverton, Wyoming – A Red Flag Warning remains in effect for Sweetwater, Natrona, southern Lincoln, and southeastern Fremont counties until 8 p.m. Saturday as dangerous fire conditions grip central and southern Wyoming.
According to the National Weather Service in Riverton, critical fire weather is expected this afternoon due to low humidity, breezy winds up to 23 mph, and very dry fuels. The warning impacts a broad swath of western and central Wyoming, including Yellowstone National Park and the Wind River Mountains.
Localized thunderstorms could develop late this afternoon and evening, especially near Riverton, with gusts up to 25 mph. Patchy smoke may linger into Saturday night, and lightning could spark new fires in dry grasslands. Residents are urged to avoid any open flames or outdoor burning.
Sunday could bring another round of elevated to critical fire weather, particularly across southern Wyoming. From Tuesday through Thursday, there’s a growing chance of afternoon thunderstorms each day, with rainfall offering slight relief but increasing lightning risks.
Officials recommend securing firewood piles, delaying outdoor welding or mowing, and charging devices in case of wildfire-related outages.
The Red Flag Warning expires at 8 p.m. Saturday, but fire danger could persist into early next week as hot, dry conditions continue.
📅 Five-Day Forecast for Riverton, WY
- Saturday: High 93°F. Mostly sunny, breezy, 20% storm chance after 4 p.m. Winds up to 23 mph.
- Sunday: High 96°F. Sunny, light wind, continued fire danger.
- Monday: High 96°F. Sunny and dry, calmer winds.
- Tuesday: High 92°F. Slight chance of PM storms.
- Wednesday: High 87°F. 40% chance of showers and thunderstorms.
