FNUS75 KMSO 271018

FWSMSO



Spot Forecast for Granite Graves 142

National Weather Service Missoula MT

418 AM MDT Mon Oct 27 2025



Forecast is based on ignition time of 1000 MDT on October 27. 

If conditions become unrepresentative...contact the National Weather

Service.



.DISCUSSION...A trough over the region today will keep 

temperatures cool and humidity high with breezy conditions. The 

cooler temperatures and snow showers will help keep the humidity 

high today, but ventilation should be very good. Showers will 

decrease this afternoon and evening as a ridge of high pressure 

starts to build over the region, setting up much worse ventilation

for tomorrow.



A shortwave on Wednesday may provide some light showers in the

mountains, but the next significant precipitation system isn't

expected until next weekend, when another albeit weaker

atmospheric river system arrives.



.REST OF TODAY...



* Sky/Weather.........Mostly cloudy. Chance of snow. 

* CWR (> 0.10 Inch)...Less than 10 percent. 

* Chance Lightning....0 percent. 

* Max Temperature.....33-38. 

* Min Humidity........52-57 percent. 

* Wind (20 ft)........West 9-14 mph with gusts to around 25 mph. 

* Mixing Height.......4000 ft agl. 

* Mixing Winds........West 25 mph. 

* Precip Amount.......0.00 inches. 



.TONIGHT...



* Sky/Weather.........Partly cloudy. Slight chance of snow in the 

  evening. 

* CWR (> 0.10 Inch)...10 percent. 

* Chance Lightning....Up to 10 percent. 

* Min Temperature.....19-24. 

* Max Humidity........85-90 percent. 

* Wind (20 ft)........Southwest 5-7 mph. 

* Mixing Height.......Less than 100 ft agl. 

* Mixing Winds........Southwest 10 mph. 

* Precip Amount.......0.01 inches. 



.TUESDAY...



* Sky/Weather.........Mostly sunny. 

* CWR (> 0.10 Inch)...0 percent. 

* Chance Lightning....0 percent. 

* Max Temperature.....41-46. 

* Min Humidity........32-37 percent. 

* Wind (20 ft)........Variable 1-3 mph. 

* Mixing Height.......2500 ft agl increasing to 3500 ft agl in the 

  afternoon. 

* Mixing Winds........South 5 mph. 

* Precip Amount.......0.00 inches. 



$$

Forecaster...Leach

Requested by...Max Harrison

Type of request...PRESCRIBED

.TAG 2524428.0/MSO

.DELDT 10/27/25

.FormatterVersion 2.0.0

.EMAIL daniel.sullivan@usda.gov,max.harrison@usda.gov,sean.rivera@usda.gov