Expected

Responsive action SHOULD be taken soon (within next hour)

Colorado Severe Red Flag Warning | Effective 08/04/2026 11:20

The National Weather Service in Denver CO has issued a Red Flag Warning in effect from noon to 7 PM MDT Wednesday. * AFFECTED AREA...Fire Weather Zones 212, 214, 217, and 218. * TIMING...From noon to 7 PM MDT Wednesday. * WINDS...West 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...Between 7 to 17 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. Follow all fire restrictions. Avoid activities that can cause sparks

Colorado, Wyoming Severe Red Flag Warning | Effective 08/04/2026 11:20

The National Weather Service in Denver CO has issued a Red Flag Warning in effect from noon to 7 PM MDT Wednesday. * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...For the first Red Flag Warning, until 7 PM MDT this evening. For the second Red Flag Warning, from noon to 7 PM MDT Wednesday. * WINDS...For the first Red Flag Warning, west 10 to 15 mph with gusts up to 35 mph. For the second Red Flag Warning, west 10 to 20 mph with gusts up to 35 mph.

Alaska Severe Flood Warning | Effective 08/04/2026 09:45

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Petersville Area * WHEN...Until 500 PM AKDT Wednesday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Low-water crossings are inundated with water and may not be passable. * ADDITIONAL DETAILS... - At 842 AM AKDT, Doppler radar and automated rain gauges indicated heavy rain across the warned area. Flooding is ongoing or expected to begin shortly. Between 2 and 3 inches

Alaska Severe Flood Warning | Effective 08/04/2026 09:14

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Yentna River including Lake Creek. * WHEN...Until 100 PM AKDT Friday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Streams continue to rise due to excess runoff from earlier rainfall. * ADDITIONAL DETAILS... - At 804 AM AKDT, The river gauge at the Yentna River at Lake Creek indicates rises in water levels from heavy rain across

Utah Severe Red Flag Warning | Effective 08/04/2026 08:37

* AFFECTED AREA...Fire Weather Zone 489 San Rafael Swell. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...5 to 10 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

Utah Severe Red Flag Warning | Effective 08/04/2026 08:37

* AFFECTED AREA...Fire Weather Zone 482 Western Uintah Basin. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...9 to 12 percent. * IMPACTS...Critical fire weather conditions are expected. Any new fire starts or existing fires may spread rapidly. A Red Flag Warning means that critical fire weather conditions are either occurring now...or are imminent. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

California, Oregon Severe Red Flag Warning | Effective 08/04/2026 06:40

* IMPACTS...Any fires that develop will likely spread rapidly. * AFFECTED AREA...In Oregon, Fire Weather zones 620, 621, 622, and 623, including Medford, Grants Pass, Ashland, Cave Junction, Eagle Point, Shady Cove, and the Siskiyous and southern Oregon Cascades. * WIND...Northwest 10 to 15 mph with gusts up to 25 mph in the afternoons, becoming east to northeast overnight. * HUMIDITY...Minimum humidity 8 to 15 percent, with poor recoveries as low as 20 percent. * ADDITIONAL INFORMATION...Critical fire weather conditions

California, Oregon Severe Red Flag Warning | Effective 08/04/2026 06:40

* IMPACTS...Any fires that develop will likely spread rapidly. * AFFECTED AREA...In California...Fire weather zone 280, and in Oregon, Fire weather zones 616 and 617. This includes the East Evans Creek and Castle fires as well as Roseburg, Toketee Falls, Elkton, Tiller, Happy Camp, Etna, and Fort Jones. * WIND...Northwest 10 to 15 mph with gusts up to 25 mph in the afternoons, becoming east to northeast overnight. * HUMIDITY...Minimum humidity 8 to 15 percent, with poor recoveries as low as 20 percent.

California, Oregon Severe Red Flag Warning | Effective 08/04/2026 06:40

* IMPACTS...Any fires that develop will likely spread rapidly. * AFFECTED AREA...In Oregon, Fire Weather zones 620, 621, 622, and 623, including Medford, Grants Pass, Ashland, Cave Junction, Eagle Point, Shady Cove, and the Siskiyous and southern Oregon Cascades. * WIND...Northwest 10 to 15 mph with gusts up to 25 mph in the afternoons, becoming east to northeast overnight. * HUMIDITY...Minimum humidity 8 to 15 percent, with poor recoveries as low as 20 percent. * ADDITIONAL INFORMATION...Critical fire weather conditions

California Severe Extreme Heat Warning | Effective 08/04/2026 04:45

* WHAT...Dangerously hot conditions with several days of Major to Extreme heat risk. * WHERE...Indian Wells Valley, Mojave Desert, and Mojave Desert Slopes. * WHEN...Until 8 PM PDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Dangerously hot conditions with high temperatures up to 110 degrees. Overnight lows will range from 75-80 degrees. Drink plenty of fluids, stay in an air-conditioned room, stay out of
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