527
FNUS76 KOTX 272036
FWSOTX

Spot Forecast for Pearl Hill...CWICC
National Weather Service Spokane WA
136 PM PDT Mon Jul 27 2026

Forecast is based on forecast start time of 0600 PDT on July 28.
.DISCUSSION...

Weather will be warm, dry, and breezy on Tuesday. Winds will
increase through the morning with gusts up to 25 mph in the
afternoon. Winds will relax after 1900-2000 hours Tuesday evening
becoming light and westerly. Relative humidity recoveries will be
fair Tuesday night. Weather trends warmer and drier for Wednesday
though winds will not be as strong as Tuesday.Expect northwest
winds in the morning shifting to the southwest with breezes up to
15 mph in the afternoon.

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).
***************************************************************

.TUESDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....85.
Min humidity........19-24 percent.
Wind (20 ft)........Southwest winds 2 to 5 mph in the morning increasing
                    to west-southwest 11 to 16 mph after 1000 hours. Wind
                    gusts up to 25 mph in the afternoon.
Mixing height.......Inversion lifting between 0800-0900 hours with mixing
                    height as high as 7500 ft AGL in the afternoon.
Transport winds.....Southwest 5 to 10 mph in the morning increasing to
                    southwest 10 to 19 mph in the afternoon.
Ventilation Index...High (738) increasing to very high (1187) in
                    the afternoon.

.TUESDAY NIGHT...

Sky/weather.........Mostly clear. Areas of smoke in the evening.
                    Haze through the night.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....57.
Max humidity........60-65 percent.
Wind (20 ft)........West-southwest winds 10 to 15 mph through
                    2000 hours, then decreasing to west
                    2 to 5 mph.
Mixing height.......Falling to near surface around 2000 hours.
Transport winds.....West 9 to 16 mph.
Ventilation Index...Very high (822) decreasing to low (46)
                    overnight.

.WEDNESDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....85.
Min humidity........12-17 percent.
Wind (20 ft)........Northwest winds 5 to 8 mph shifting to the
                    southwest in the afternoon. Gusts up to 15
                    mph in the afternoon.
Mixing height.......Inversion lifting between 0800-0900 hours with
                    mixing height as high as 7200 ft AGL in the
                    afternoon.
Transport winds.....Northwest around 7 mph shifting to the
                    southwest in the afternoon.
Ventilation Index...Low (175) increasing to high (507) in the
                    afternoon.

$$
Forecaster...VT
Requested by...April Miller
Type of request...WILDFIRE
.TAG 2618225.3/OTX
.DELDT 07/27/26
.FormatterVersion 2.0.0
.EMAIL christopher_miller@firenet.gov