541
FNUS75 KMSO 220234
FWSMSO

Spot Forecast for Knowles
National Weather Service Missoula MT
834 PM MDT Thu Aug 21 2025

Forecast is based on forecast start time of 0600 MDT on August 22.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Forecast split into Bottom (2500 ft MSL) and Top
(5500 ft MSL) for relevant variables. Mixing heights listed as
elevation above sea level (MSL).

Hot and dry Thursday with relatively calm winds gusting into the
teens out of the north. Min RHs in the teens and low 20s.

Continued hot and dry rest of the week into the weekend. Winds
increasing out of the east/northeast with gusts up to 20 mph
Friday afternoon and evening. Overnight valley inversions/thermal
belts present with top of inversion layer between 3000 ft MSL and
5500 ft MSL. Saturday will be hottest and driest. Smoke/haze at
times from other regional wildfire activity. Any dense smoke in
the afternoon could inhibit maximum heating potential.

.FRIDAY...

* Sky/Weather.........Mostly sunny. Smoke/haze.
* CWR (> 0.10 Inch)...0 percent.
* Chance Lightning....0 percent.
* Max Temperature.....Bottom: 84-89, Top: 74-79.
* Min Humidity........Bottom: 17-22 percent, Top: 22-27 percent.
* Wind (20 ft)........East-northeast 2-5 mph with gusts up to 15
  mph in the morning becoming northeast 4-10 mph with gusts up to
  20 mph in the afternoon.
* Mixing Height.......Near 3000 ft MSL in the morning increasing
  to 9000 ft MSL in the afternoon.
* Mixing Winds........East 10 mph.
* Precip Amount.......0.00 inches.

.FRIDAY NIGHT...

* Sky/Weather.........Mostly clear. Smoke/haze.
* CWR (> 0.10 Inch)...0 percent.
* Chance Lightning....0 percent.
* Min Temperature.....Bottom: 52-57, Top: 57-62.
* Max Humidity........44-49 percent.
* Wind (20 ft)........Northeast 4-10 mph with gusts up to 20 mph
  in the evening becoming east-northeast 2-5 mph with gusts up to
  12 mph overnight.
* Mixing Height.......Decreasing to near 3000 ft MSL overnight.
* Mixing Winds........East 5 mph.
* Precip Amount.......0.00 inches.

.SATURDAY...

* Sky/Weather.........Mostly sunny. Smoke/haze.
* CWR (> 0.10 Inch)...0 percent.
* Chance Lightning....0 percent.
* Max Temperature.....Bottom: 89-94, Top: 78-83.
* Min Humidity........Bottom: 12-17 percent, Top: 17-22 percent.
* Wind (20 ft)........East-northeast 2-5 mph with gusts up to 12
  mph in the morning becoming northeast 3-8 mph with gusts up to
  15 mph in the afternoon.
* Mixing Height.......Increasing to near 9500 ft MSL in the
  afternoon.
* Mixing Winds........North 5 mph.
* Precip Amount.......0.00 inches.

$$
Forecaster...Parker/Lukinbeal
Requested by...Erin Ryan
Type of request...WILDFIRE
.TAG 2520187.4/MSO
.DELDT 08/21/25
.FormatterVersion 2.0.0
.EMAIL 2025.knowles.plans@firenet.gov,erin_ryan@firenet.gov