726
FNUS75 KMSO 172313
FWSMSO

Spot Forecast for Moose Fire PM
National Weather Service Missoula MT
513 PM MDT Mon Aug 17 2026

Forecast is based on forecast start time of 0700 MDT on August 18.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...There is a chance of showers and slight chance of
thunderstorm during Tuesday afternoon and early evening.
Thunderstorm risk will be minimal during Tuesday evening. Little
chance of a wetting rain expected on Tuesday unless a thunderstorm
goes directly over the fire, with thunderstorm and wetting rain
more likely well to the south and east of the fire ground. Erratic
outflow gusts up to 35-40 mph possible from showers/thunderstorm,
even with activity well away from the fire.

Diurnal terrain driven winds likely overnight, mixing to light
west to northwesterly in the afternoon but may be gusty up to
15-20 mph at times on ridgetops.

Fair RH recovery overnight, however, RH generally expected to be
lower than previous days with easing showers/thunderstorm
conditions from Tuesday night.

Dry with no precipitation expected on Wednesday.

.TUESDAY...

* Sky/Weather.........Partly cloudy. Chance of rain showers and
  slight chance of thunderstorms in the afternoon.
* CWR (> 0.10 Inch)...10 percent.
* Chance Lightning....20 percent.
* Max Temperature.....68-73.
* Min Humidity........32-37 percent.
* Wind (20 ft)........Southwest around 5 mph shifting to the west
  5-7 mph with gusts to around 20 mph on ridgetops in the
  afternoon.
* Mixing Height.......1000 ft agl increasing to 9000 ft agl in the
  afternoon.
* Mixing Winds........West 10-12 mph.
* Precip Amount.......0.00 inches.

.TUESDAY NIGHT...

* Sky/Weather.........Partly cloudy. Very slight (<10%) chance of
  thunderstorm during early evening.
* CWR (> 0.10 Inch)...less than 10 percent.
* Chance Lightning....Up to 10 percent.
* Min Temperature.....52-57.
* Max Humidity........40-45 percent.
* Wind (20 ft)........West around 5 mph with gusts to around 20
  mph on ridgetops shifting to the southwest 5-6 mph overnight.
* Mixing Height.......5000 ft agl decreasing to 500 ft agl early in
  the evening.
* Mixing Winds........West 5 mph.
* Precip Amount.......0.00 inches.

.WEDNESDAY...

* Sky/Weather.........Mostly sunny.
* CWR (> 0.10 Inch)...0 percent.
* Chance Lightning....0 percent.
* Max Temperature.....70-75.
* Min Humidity........20-25 percent.
* Wind (20 ft)........Southwest around 5 mph shifting to the west
  5-6 mph with gusts to around 20 mph on ridgetops in the
  afternoon.
* Mixing Height.......3000 ft agl increasing to 8000 ft agl in the
  afternoon.
* Mixing Winds........Southwest to west 10 mph.
* Precip Amount.......0.00 inches.

$$
Forecaster...Booth
Requested by...Ron Brunell
Type of request...WILDFIRE
.TAG 2619413.6/MSO
.DELDT 08/17/26
.FormatterVersion 2.0.0
.EMAIL julia.goar@mt.gov,julia_goar@firenet.gov,ron_brunell@firenet.gov,2026.moose.plans@firenet.gov