662
FNUS76 KOTX 082323
FWSOTX

Spot Forecast for Dudley Fire...USFS
National Weather Service Spokane WA
423 PM PDT Tue Sep 8 2026

Forecast is based on forecast start time of 1800 PDT on September 08.

.DISCUSSION...
High pressure builds in through Wednesday, before the next front
moves in Thursday. Look for variably cloudy skies, with
some afternoon breeziness, especially on ridgetops. Thursday looks
to be breeziest. A chance for showers and a slight chance for
thunderstorms arrives late Thursday into Thursday night. Slight
shower chances linger Friday. Better rain chances develop Saturday
with a good chance of wetting rains and some breezy conditions.
Shower chances linger Sunday, before drying out. Temperatures
will be mild through Thursday, then cooler readings are forecast.
Humidity recoveries are forecast to be good to excellent.


If conditions become unrepresentative, contact the National Weather
Service.
***************************************************************
Forecasts for 20 foot wind speeds (valleys and ridge tops) are
10 minute averages reflecting RAWS wind.
***Ventilation Index is derived from transport wind
   multiplied by the mixing height divided by 100.
   Categories: low (< 200), moderate (200-500),
   high (500-800), and very high (> 800).
***************************************************************

.TONIGHT...

Sky/weather.........Mostly cloudy in the early evening...then
                    clearing.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....42-45.
Max humidity........85-95 percent.
Wind (20 ft)........West wind 3 to 5 mph becoming southeast
                    4 to 7 mph with ridgetop winds 6 to 11 mph
                    gusting to 15 mph after 2000.
Mixing height.......2000 ft AGL.
Transport winds.....South 6 to 7 mph.
Ventilation Index...Low (100).


.WEDNESDAY...

Sky/weather.........Mostly sunny in the morning...becoming partly
                    cloudy in the afternoon.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....68-74.
Min humidity........37-39 percent.
Wind (20 ft)........Southeast 4 to 7 mph with ridgetops 6 to 11 mph
                    gusting to 15 mph in the morning...becoming
                    west-southwest 3 to 6 mph with gusts to 10 mph.
Mixing height.......3500 ft AGL increasing to 5000 ft AGL in the
                    afternoon.
Transport winds.....South around 7 mph shifting to the west around
                    13 mph in the afternoon.
Ventilation Index...Moderate (249) increasing to high (650) in the
                    afternoon.

.WEDNESDAY NIGHT...

Sky/weather.........Mostly cloudy.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....48-51.
Max humidity........61-74 percent.
Wind (20 ft)........West wind 3 to 7 mph becoming south after
                    2000.
Mixing height.......2000 ft AGL.
Transport winds.....Southwest around 9 mph.
Ventilation Index...Low (182).


.THURSDAY...

Sky/weather.........Variably cloudy through early afternoon
                    ....then becoming mostly cloudy. A 40%
                    chance of showers and a slight chance for
                    thunderstorms in the late afternoon
                    to evening mainly after 1500-1700.
CWR.................10 percent.
Chance of lightning.5 percent.
Max temperature.....68-73.
Min humidity........39-41 percent.
Wind (20 ft)........South winds around 5 mph shifting to the
                    southwest 6 to 12 mph with gusts to
                    22 mph in the afternoon. Gusts and erratic
                    winds expected near thunderstorms.
Mixing height.......4500 ft AGL increasing to 6000 ft AGL in the
                    afternoon.
Transport winds.....Southwest 14 to 21 mph.
Ventilation Index...High (648) increasing to very high (1158) in
                    the afternoon.

$$
Forecaster...MSC
Requested by...Luke Smith
Type of request...WILDFIRE
.TAG 2620763.12/OTX
.DELDT 09/08/26
.FormatterVersion 2.0.0
.EMAIL lance.vaelli@usda.gov,garrett.pitsenbarger@usda.gov,michael.starr@usda.gov,evan.a.ratcliffe@usda.gov,luke.smith2@usda.gov,chris_stetson@firenet.gov