409
WWUS85 KPIH 310702
RFWPIH

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pocatello ID
102 AM MDT Fri Jul 31 2026

...GUSTY WINDS AND LOW HUMIDITY EXPECTED THIS WEEKEND...

.A building ridge to the south combined with a trough moving
across western Canada will tighten the pressure gradient over the
area through the weekend creating breezy to windy conditions for
the weekend. This combined with warming temperatures and low
humidity will lead to high fire danger across much of eastern
Idaho.

IDZ410-422-425-475-476-312100-
/O.CON.KPIH.FW.A.0003.260801T2000Z-260803T0300Z/
Upper Snake River Valley/Idaho Falls BLM-
Sawtooth Range/Northern Sawtooth NF-
Middle Snake River Valley/Twin Falls BLM north of the Snake River-
East Salmon River Mountains/Salmon NF-
Lemhi and Lost River Range/Challis NF-
102 AM MDT Fri Jul 31 2026

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH SUNDAY EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY
FOR FIRE WEATHER ZONES 410, 422, 425, 475, AND 476...

* 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 475 East Salmon River Mountains/Salmon NF and
  Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF.

* WINDS...West 15 to 25 mph with gusts up to 40 mph during the
  afternoon and evening hours.

* RELATIVE HUMIDITY...5 to 12 percent during the afternoon and
  early evenings.

* IMPACTS...Moderate wind and very low humidity can lead to
  rapid spread of fire and more intense fire in receptive fuels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$