Red Flag Warning for Upper Snake River Valley/Idaho Falls BLM; Sawtooth Range/Northern Sawtooth NF; Middle Snake River Valley/Twin Falls BLM north of the Snake River +3 more
Official alert fields
What you need to know
- Applies to
- East Salmon River Mountains/Salmon NF, Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River, Lemhi and Lost River Range/Challis NF, Middle Snake River Valley/Twin Falls BLM north of the Snake River, Sawtooth Range/Northern Sawtooth NF, Upper Snake River Valley/Idaho Falls BLM
- Effective
- Ends or expires
- Official severity
- Severe
- Official urgency
- Expected
- Official certainty
- Likely
What is happening
Impacts: Frequent lightning will increase risk of new fire starts.
What the bulletin says to do
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.
Full official description
Bulletin details
...CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED ON SATURDAY DUE TO SCATTERED THUNDERSTORM ACTIVITY ACROSS MUCH OF EASTERN IDAHO... The National Weather Service in Pocatello has issued a Red Flag Warning for scattered thunderstorms, which is in effect from noon to 9 PM MDT Saturday. * AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, 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...Gusty and erratic winds to 60 mph.
Official geometry where available
Alert boundary
Lifecycle record
Official revisions
- Alert
Red Flag Warning issued August 21 at 12:41PM MDT until August 22 at 9:00PM MDT by NWS Pocatello ID
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Pocatello ID. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Alert
- Last collected