135
FNUS75 KMSO 152156
FWSMSO

Spot Forecast for Nature Grove - Fire Behavior Request
National Weather Service Missoula MT
356 PM MDT Tue Sep 15 2026

Forecast is based on forecast start time of 0700 MDT on September 16.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...The region remains between systems with a low
pressure pushing into Northern California this evening. The
significance will be an easterly gradient developing in response
to the low pressure. The low pressure will begin to move northeast
on Thursday and showers and thunderstorms begin to affect the
region, measurable precipitation is unlikely prior to 6pm
Thursday. Over the next 24 to 36 hours, the models have 0.3 to 1"
of precipitation over the fire complex with the majority falling
on Friday.

.WEDNESDAY...

* Sky/Weather.........Mostly sunny.
* CWR (> 0.10 Inch)...0 percent.
* Chance Lightning....0 percent.
* Max Temperature.....62-67.
* Min Humidity........42-47 percent.
* Wind (20 ft)........Variable 1-3 mph becoming northeast 5-10
  mph.
* Mixing Height.......3000 ft agl increasing to 3500 ft agl late in
  the afternoon.
* Mixing Winds........Northeast 5 mph.
* Precip Amount.......0.00 inches.

.WEDNESDAY NIGHT...

* Sky/Weather.........Mostly clear.
* CWR (> 0.10 Inch)...0 percent.
* Chance Lightning....0 percent.
* Min Temperature.....42-47.
* Max Humidity........85-90 percent.
* Wind (20 ft)........Northeast 5-10 mph variable 2-5 mph.
* Mixing Height.......500 ft agl.
* Mixing Winds........East 5 mph.
* Precip Amount.......0.00 inches.

.THURSDAY...

* Sky/Weather.........Partly cloudy. Chance of rain showers and
  slight chance of thunderstorms in the afternoon.
* CWR (> 0.10 Inch)...10 percent.
* Chance Lightning....25 percent.
* Max Temperature.....70-75.
* Min Humidity........30-35 percent.
* Wind (20 ft)........Variable 2-5 mph becoming southeast 4-9 mph
  with gusts up to 14 mph.
* Mixing Height.......3000 ft agl increasing to 6000 ft agl in the
  afternoon.
* Mixing Winds........South 10 mph.
* Precip Amount.......0.00-0.03 inches.

.FORECAST DAYS 3 THROUGH 7...
.FRIDAY...
Showers and chance of thunderstorms. Lows 47-52. Highs 62-67.
Winds generally less than 5 mph.
.SATURDAY...
Partly cloudy with chance of showers and slight chance of
thunderstorms. Lows 44-49. Highs 62-67. Winds generally less than
5 mph.
.SUNDAY...
Mostly clear. Lows 43-48. Highs 67-72. Winds generally less than
5 mph.
.MONDAY...
Mostly clear. Lows 44-49. Highs 69-74.
.TUESDAY...
Partly cloudy. Lows 45-50. Highs 65-70.

$$
Forecaster...BEC
Requested by...David Hood
Type of request...WILDFIRE
.TAG 2621219.10/MSO
.DELDT 09/15/26
.FormatterVersion 2.0.0
.EMAIL Kodie.McQuay@usda.gov,christopher.marabetta@usda.gov,matthew.young@usda.gov,2026.naturegrove.plans@firenet.gov,Eldon.Johnson@usda.gov