Active Weather Alerts
Red Flag Warning
Issued: 2:26 PM Aug. 16, 2025 – National Weather Service
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 411, 413, 475, AND 476... * AFFECTED AREA...Fire Weather Zone 411 Centennial Mountains and Snake River Range/Targhee NF, Fire Weather Zone 413 Caribou Range/Caribou NF, Fire Weather Zone 475 East Salmon River Mountains/Salmon NF and Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF. * THUNDERSTORMS...25 to 40 percent coverage. * OUTFLOW WINDS...A dry low-level environment will promote stronger storms capable of producing wind gusts up to 50 to 60 mph. * IMPACTS...Critical fire weather conditions are expected Saturday afternoon and evening. Lightning may generate new fire starts. Any new fire starts or existing fires may spread rapidly. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria for Southeastern Idaho: - Relative humidity at or below 15 percent and wind gusts of at least 25 mph in the mountains, or 30 mph in the Snake Plain. - Thunderstorm coverage of 25 percent, without specific rainfall criteria. - Other high impact events deemed critical by the National Weather Service and area fire management agencies. &&
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