FNUS75 KMSO 201558

FWSMSO



Spot Forecast for Silver Mule Unit 71

National Weather Service Missoula MT

958 AM MDT Mon Apr 20 2026



Forecast is based on ignition time of 1000 MDT on April 21. 

If conditions become unrepresentative...contact the National Weather

Service.



.DISCUSSION...Abnormally warm and dry conditions with RHs 

dropping into the mid teens by Tuesday afternoon. Tuesday will be

the warmest driest day and will have light southwesterly winds. 

Precipitation will increase over the burn area Wednesday morning, 

increasing in intensity Wednesday afternoon through Thursday. 24 

hour precipitation amounts ending 1200 MDT Thursday show a most 

likely range between 0.40" to 1.0". Probability of at least seeing

a wetting rain is 90 percent. 





.TUESDAY...



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

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

* Chance Lightning....0 percent. 

* Max Temperature.....69-74. 

* Min Humidity........14-19 percent. 

* Wind (20 ft)........Variable 2-4 mph becoming southwest 5-10 

  mph in the afternoon. 

* Mixing Height.......1500 ft agl increasing to 8500 ft agl. 

* Mixing Winds........South 15 mph. 

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



.TUESDAY NIGHT...



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

  evening. 

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

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

* Min Temperature.....37-42. 

* Max Humidity........65-70 percent. 

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

* Mixing Height.......1500 ft agl decreasing to less than 100 ft 

  agl early in the evening. 

* Mixing Winds........Southeast 10 mph. 

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



.WEDNESDAY...



* Sky/Weather.........Mostly cloudy. Chance of rain in the morning, 

  then rain showers, snow showers and chance of thunderstorms in 

  the afternoon. 

* CWR (> 0.10 Inch)...90 percent. 

* Chance Lightning....25 percent. 

* Max Temperature.....53-58. 

* Min Humidity........55-60 percent. 

* Wind (20 ft)........Variable 2-5 mph becoming west 6-12 mph in 

  the afternoon. 

* Mixing Height.......2000 ft agl increasing to 3500 ft agl late in 

  the morning. 

* Mixing Winds........West 10 mph. 

* Precip Amount.......0.36 inches. 



$$

Forecaster...Messina

Requested by...Matthew Glenn

Type of request...PRESCRIBED

.TAG 2610905.0/MSO

.DELDT 04/20/26

.FormatterVersion 2.0.0

.EMAIL Matthew.glenn@usda.gov