Weather Alerts for Western Lemhi CountyIssued by the National Weather Service |
 RED FLAG WARNING |
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| WESTERN LEMHI COUNTY | ||
Areas Affected: Upper Snake River Valley/Idaho Falls BLM - Centennial Mountains and Snake River Range/Targhee NF - Caribou Range/Caribou NF - Sawtooth Range/Northern Sawtooth NF - Middle Snake River Valley/Twin Falls BLM north of the Snake River - Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River - East Salmon River Mountains/Salmon NF - Lemhi and Lost River Range/Challis NF |
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| Effective: Thu, 8/13 1:16am | Updated: Thu, 8/13 11:39am | Urgency: Expected |
| Expires: Thu, 8/13 9:00pm | Severity: Severe | Certainty: Likely |
Details:
...CRITICAL FIRE WEATHER CONDITIONS THURSDAY DUE TO SCATTERED THUNDERSTORMS... * AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, Fire Weather Zone 411 Centennial Mountains and Snake River Range/Targhee NF, Fire Weather Zone 413 Caribou Range/Caribou NF, Fire Weather Zone 422 Sawtooth Range/Northern Sawtooth NF, Fire Weather Zone 425 Middle Snake River Valley/Twin Falls BLM north of the Snake River, Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River, Fire Weather Zone 475 East Salmon River Mountains/Salmon NF and Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF. * IMPACTS...Frequent lightning will increase risk of new fire starts. * THUNDERSTORMS...Scattered coverage with frequent lightning. * OUTFLOW WINDS...Erratic winds 35 to 45 mph. Information: 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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