Red Flag Warning issued August 21 at 12:41PM MDT until August 22 at 9:00PM MDT by NWS Pocatello ID

…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.
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.