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Flash Flood Watch — Boise Mountains Severity: Severe. Certainty: Possible. * WHAT...Flash flooding and debris flows caused by excessive rainfall are possible over the Crooked burn scar and Wapiti burn scar. Total rainfall up to 1 inch is possible on the burn scars. * WHERE...Wapiti and Crooked burn scars in southwest Idaho including Highway 21 between Grandjean and Banner Summit. * WHEN...From 6 PM MDT this evening through Friday morning. * IMPACTS...Heavy rainfall over the Crooked and Wapiti burn scars which could trigger flash flooding or debris flows. Residents near the Crooked and Wapiti burn scar should prepare for potential debris flow. Mud and debris could impact Highway 21 between Grandjean and Banner Summit. * ADDITIONAL DETAILS... - National Weather Service Meteorologists are forecasting heavy rainfall over the Crooked and Wapiti burn scar, which may lead to flash flooding and debris flows. - Some locations that may experience flash flooding include... Grandjean and Highway 21 between Grandjean and Banner Summit. - https://www.weather.gov/safety/flood
The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.