FNUS75 KMSO 230411
FWSMSO

Spot Forecast for Lumber Fire
National Weather Service Missoula MT
1011 PM MDT Sat Aug 22 2026

Forecast is based on forecast start time of 0600 MDT on August 23. 
If conditions become unrepresentative...contact the National Weather
Service.

...RED FLAG WARNING IN EFFECT UNTIL 6 AM MDT SUNDAY...

.DISCUSSION...Drying conditions and gusty westerly winds for 
Sunday. Ridge of high pressure rebuilds early week bringing
rebounding stable and hot conditions to the fire location with 
mostly terrain-driven winds and increasingly poor overnight 
recoveries off the valley floor.

.SUNDAY...

* Sky/Weather.........Mostly sunny, very slight chance for a 
  shower or isolated thunderstorm mainly in the morning.
* CWR (> 0.10 Inch)...Less than 10 percent. 
* Chance Lightning....Less than 10 percent. 
* Max Temperature.....75-80. 
* Min Humidity........25-30 percent. 
* Wind (20 ft)........West 8-15 mph with gusts up to 30 mph in 
  the afternoon. 
* Mixing Height.......Near 500 ft agl in the morning increasing to
  8000 ft agl in the afternoon.
* Mixing Winds........West 20 mph. 
* Precip Amount.......0.00-0.02 inches. 

.SUNDAY NIGHT...

* Sky/Weather.........Mostly clear. 
* CWR (> 0.10 Inch)...0 percent. 
* Chance Lightning....0 percent. 
* Min Temperature.....53-58. 
* Max Humidity........47-52 percent. 
* Wind (20 ft)........Southwest 2-8 mph with gusts up to 25 mph in
  the evening, then gusts up to 15 mph overnight. 
* Mixing Height.......Decreasing to 500 ft agl overnight. 
* Mixing Winds........West 10 mph. 
* Precip Amount.......0.00 inches. 

.MONDAY...

* Sky/Weather.........Mostly sunny. 
* CWR (> 0.10 Inch)...0 percent. 
* Chance Lightning....0 percent. 
* Max Temperature.....79-84. 
* Min Humidity........19-24 percent. 
* Wind (20 ft)........Variable 1-4 mph in the morning becoming
  northeast/upcanyon 1-5 mph with gusts up to 10 mph in the
  afternoon.
* Mixing Height.......Increasing to 9000 ft agl. 
* Mixing Winds........West 5 mph. 
* Precip Amount.......0.00 inches. 

$$
Forecaster...Parker
Requested by...Ben Holland
Type of request...WILDFIRE
.TAG 2620281.0/MSO
.DELDT 08/22/26
.FormatterVersion 2.0.0
.EMAIL bennett.holland@mt.gov