917 
FNUS75 KMSO 090938
FWSMSO

Spot Forecast for Granite Pass Complex
National Weather Service Missoula MT
338 AM MDT Thu Sep 9 2021

Forecast is based on forecast start time of 0600 MDT on September 09. 
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Another breezy day is forecast today with late
afternoon winds gusting 18-24 mph. This evening high resolution
models have hinted at a slight chance of showers. Conditions at 
the surface are very dry and these showers will likely be high 
based with gusty outflow winds but a stray lightning strike cannot
be ruled out. Friday is still on track for a wetting rain, with 
showers likely beginning after 1500 MDT. There is a 50-60% 
probability of greater than a 0.50" rain by Saturday morning. 

.TODAY...

* Sky/Weather.........Partly cloudy. 
* CWR (> 0.10 Inch)...0 percent. 
* LAL.................1. 
* Max Temperature.....73-78. 
* Min Humidity........28-33 percent. 
* Wind (20 ft)........Southwest 8-12 mph with gusts 18-24 mph
  after 1400 MDT.
* Mixing Height.......Less than 100 ft agl increasing to 8000 ft 
  agl in the afternoon. 
* Mixing Winds........Southwest 10 mph. 
* Haines Index........3 very low. 
* Precip Amount.......0.00 inches. 

.TONIGHT...

* Sky/Weather.........Partly cloudy then becoming mostly cloudy.
  Slight chance showers. 
* CWR (> 0.10 Inch)...0 percent. 
* LAL.................1. 
* Min Temperature.....48-53. 
* Max Humidity........55-60 percent. 
* Wind (20 ft)........West 5-12 mph in the evening becoming
  downslope 3-6 mph. 
* Mixing Height.......8000 ft agl decreasing to less than 100 ft 
  agl overnight. 
* Mixing Winds........Southwest 10 mph. 
* Precip Amount.......0.00 inches. 

.FRIDAY...

* Sky/Weather.........Mostly cloudy. Chance of rain showers and 
  slight chance of thunderstorms in the afternoon. 
* CWR (> 0.10 Inch)...40 percent. 
* LAL.................2. 
* Max Temperature.....68-73. 
* Min Humidity........48-53 percent. 
* Wind (20 ft)........Variable 2-4 mph becoming west 5-6 mph in the 
  afternoon. 
* Mixing Height.......Less than 100 ft agl increasing to 5500 ft 
  agl in the afternoon. 
* Mixing Winds........Southwest 5 mph. 
* Haines Index........3 very low. 
* Precip Amount.......0.17 inches. 

$$
Forecaster...BEC
Requested by...Rogue Swenson
Type of request...WILDFIRE
.TAG 2117416.26/MSO
.DELDT 09/09/21
.FormatterVersion 2.0.0
.EMAIL rogue.swenson@usda.gov