Red Flag Warning
URGENT - FIRE WEATHER MESSAGE
National Weather Service Pocatello ID
317 AM MDT Sat Aug 22 2026
...CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED ON SATURDAY DUE
TO SCATTERED THUNDERSTORM ACTIVITY ACROSS MUCH OF EASTERN IDAHO...
IDZ410-422-425-427-475-476-230300-
/O.CON.KPIH.FW.W.0022.260822T1800Z-260823T0300Z/
Upper Snake River Valley/Idaho Falls BLM-
Sawtooth Range/Northern Sawtooth NF-
Middle Snake River Valley/Twin Falls BLM north of the Snake River-
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-
317 AM MDT Sat Aug 22 2026
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES
410, 422, 425, 427, 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 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.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
$$
Lake Wind Advisory
URGENT - WEATHER MESSAGE
National Weather Service Glasgow MT
259 AM MDT Sat Aug 22 2026
MTZ016-017-021>023-230900-
/O.CON.KGGW.LW.Y.0039.260822T1800Z-260823T0900Z/
Central and Southeast Phillips-Central and Southern Valley-
Petroleum-Garfield-McCone-
Including Devils Creek Rec Area and Fort Peck
259 AM MDT Sat Aug 22 2026
...LAKE WIND ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 3 AM MDT
SUNDAY...
* WHAT...Southeast winds 10 to 20 mph with gusts up to 35 mph
expected.
* WHERE...Fort Peck Lake.
* WHEN...From noon today to 3 AM MDT Sunday.
* IMPACTS...Strong winds and rough waves on area lakes will create
hazardous conditions for small craft.
* ADDITIONAL DETAILS...Waves up to 3 feet possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Boaters on Fort Peck Lake should use extra caution since strong winds
and rough waves can overturn small craft.
&&
$$
Ebert
Fire Weather Watch
URGENT - FIRE WEATHER MESSAGE...CORRECTED
National Weather Service Missoula MT
430 PM MDT Fri Aug 21 2026
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SUNDAY MORNING DUE TO LIGHTNING FOR KOOTENAI, WEST LOLO, AND FLATHEAD
RESERVATION...
...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY
EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST
BEAVERHEAD AND EAST BEAVERHEAD...
...
.Antecedent conditions have been very dry and warm. The Kootenai
Forest especially has received well below normal precipitation since
early July. Thunderstorms with little to no precipitation Saturday
evening and overnight will be followed Sunday with a dry cold front.
Increased winds and lowering relative humidities behind the front on
Sunday will potentially bring critical fire weather conditions to
southwest Montana.
MTZ104-106-107-220630-
/O.COR.KMSO.FW.A.0006.260822T2300Z-260823T1800Z/
Kootenai-West Lolo-Flathead Reservation-
430 PM MDT Fri Aug 21 2026
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SUNDAY MORNING...
The National Weather Service in Missoula MT has issued a Fire Weather
Watch.
* AFFECTED AREA...Fire Weather Zones 104, 106, and 107.
* TIMING...From Saturday afternoon through Sunday morning.
* LIGHTNING...Afternoon and evening thunderstorms will transition to
nocturnal thunderstorms. Dry surface conditions could lead to
lightning producing storms with little to no precipitation.
* OUTFLOW WINDS...Through 9 pm erratic winds 25 to 40 mph.
* IMPACTS...Lightning strikes will have the potential to start new
fires, and gusty outflow winds could cause rapid spread of new and
existing wildfires.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Please advise the appropriate officials or fire crews in the field of
this Fire Weather Watch.
&&
$$
URGENT - FIRE WEATHER MESSAGE...CORRECTED
National Weather Service Missoula MT
430 PM MDT Fri Aug 21 2026
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SUNDAY MORNING DUE TO LIGHTNING FOR KOOTENAI, WEST LOLO, AND FLATHEAD
RESERVATION...
...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY
EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR DEERLODGE/WEST
BEAVERHEAD AND EAST BEAVERHEAD...
...
.Antecedent conditions have been very dry and warm. The Kootenai
Forest especially has received well below normal precipitation since
early July. Thunderstorms with little to no precipitation Saturday
evening and overnight will be followed Sunday with a dry cold front.
Increased winds and lowering relative humidities behind the front on
Sunday will potentially bring critical fire weather conditions to
southwest Montana.
MTZ110-111-220630-
/O.COR.KMSO.FW.A.0006.260823T1800Z-260824T0300Z/
Deerlodge/West Beaverhead-East Beaverhead-
430 PM MDT Fri Aug 21 2026
...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY
EVENING...
The National Weather Service in Missoula MT has issued a Fire Weather
Watch.
* AFFECTED AREA...Fire Weather Zones 110 and 111.
* TIMING...From Sunday afternoon through Sunday evening.
* WINDS...Southwest winds 10 to 20 mph with gusts up to 35 mph.
* RELATIVE HUMIDITY...Relative Humidity between 15 to 25 percent.
* IMPACTS...Any new or existing fires may spread rapidly.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Please advise the appropriate officials or fire crews in the field of
this Fire Weather Watch.
&&
$$
