Expected

Responsive action SHOULD be taken soon (within next hour)

California Severe Extreme Heat Warning | Effective 08/10/2026 03:51

* WHAT...High temperatures up to 108 degrees and Major to locally Extreme Heat Risk. * WHERE...San Joaquin Valley and adjacent foothills, Lake Isabella, and the Kern River Valley. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Hot temperatures and limited overnight relief may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car

Kansas, Missouri Severe Extreme Heat Warning | Effective 08/10/2026 01:59

* WHAT...Dangerously hot conditions with heat index values up to 108. * WHERE...In Kansas, Linn KS and Miami Counties. In Missouri, Cooper, Howard, Pettis, Saline, Bates, Cass, Henry, and Johnson MO Counties. * WHEN...Until 8 PM CDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Arizona, California, Nevada Severe Extreme Heat Warning | Effective 08/10/2026 01:57

* WHAT...Dangerously hot conditions with highs of 110 to 115 in the Las Vegas Valley, Pahrump, Moapa Valley, and the Colorado River Valley, and up to 120 in Death Valley. Warm overnight temperatures will result in little relief overnight. * WHERE...Lake Mohave, Lake Mead, Lower Colorado River Valley / Lake Havasu, Death Valley National Park, Northeast Clark County, Western Clark and Southern Nye County, and Las Vegas Valley. * WHEN...Until 8 PM PDT /8 PM MST/ this evening.

Wyoming Severe Red Flag Warning | Effective 08/10/2026 01:23

The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...Strong Gusty Winds...and Dry Thunderstorms with gusty and erratic outflow winds could cause erratic fire behavior. * AFFECTED AREA: In Northwest WY...Fire Weather Zone 286. * COUNTIES AFFECTED: In Central WY...Fremont. In North Central WY...Hot Springs...Park. * WIND: West 10 to 20 mph with gusts up to 35 mph.

Wyoming Severe Red Flag Warning | Effective 08/10/2026 01:23

The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...Strong Gusty Winds...and Dry Thunderstorms with gusty and erratic outflow winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...283...289. In North Central WY Fire Zone....287. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs.

Wyoming Severe Red Flag Warning | Effective 08/10/2026 01:23

The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...Strong Gusty Winds...and Dry Thunderstorms with gusty and erratic outflow winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...285...300. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona.

Wyoming Severe Red Flag Warning | Effective 08/10/2026 01:23

The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...Strong Gusty Winds...and Dry Thunderstorms with gusty and erratic outflow winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette.

Idaho Severe Red Flag Warning | Effective 08/10/2026 01:02

* AFFECTED AREA...Fire Weather Zone 475 East Salmon River Mountains/Salmon NF and Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF. * WIND...West 10 to 20 mph with gusts up to 30 mph. * HUMIDITY...As low as 10 percent. * IMPACTS...Wind reaching these speeds and humidity drier than 15 percent can result in rapid fire spread and extreme wildfire intensity. A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria

Idaho Severe Red Flag Warning | Effective 08/10/2026 01:02

* AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM and Fire Weather Zone 425 Middle Snake River Valley/Twin Falls BLM north of the Snake River. * WIND...West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY...As low as 8 percent. * IMPACTS...Wind reaching these speeds and humidity drier than 15 percent can result in rapid fire spread and extreme wildfire intensity. A Red Flag Warning means that critical fire weather conditions

Arizona, California Severe Extreme Heat Warning | Effective 08/10/2026 00:30

* WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 112 with apparent temperatures between 110 and 120 degrees. Major Heat Risk. * WHERE...In Arizona, Parker Valley and Yuma. In California, Chuckwalla Valley, Imperial County West, Imperial Valley, Palo Verde Valley, and Salton Sea. * WHEN...Until 8 PM MST /8 PM PDT/ this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat
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