Weather Alerts for Upper Snake River PlainIssued by the National Weather Service |
 RED FLAG WARNING |
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| UPPER SNAKE RIVER PLAIN | ||
Areas Affected: Upper Snake River Valley/Idaho Falls BLM - Caribou Range/Caribou NF - Sawtooth Range/Northern Sawtooth NF - 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: Fri, 6/19 12:38pm | Updated: Fri, 6/19 12:39pm | Urgency: Expected |
| Expires: Sat, 6/20 9:00am | Severity: Severe | Certainty: Likely |
Details:
...RED FLAG WARNING IN EFFECT FROM 6 AM TO 9 PM MDT SATURDAY FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 410, 413, 422, 427, 475, AND 476... The National Weather Service in Pocatello has issued a Red Flag Warning for scattered thunderstorms, which is in effect from 6 AM to 9 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, Fire Weather Zone 413 Caribou Range/Caribou NF, Fire Weather Zone 422 Sawtooth Range/Northern Sawtooth NF, 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...Critical fire weather conditions are expected Saturday. Lightning may generate new fire starts. Any new fire starts or existing fires may spread rapidly. * THUNDERSTORMS...25 to 45 percent coverage. * OUTFLOW WINDS...Stronger storms will be capable of producing wind gusts up to 55 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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