673
FNUS76 KOTX 240043
FWSOTX

Spot Forecast for Railroad...SE WA Type 3 IMT - Team 1
National Weather Service Spokane WA
543 PM PDT Thu Jul 23 2026

Forecast is based on forecast start time of 0600 PDT on July 24.

...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY EVENING...

.DISCUSSION...

Conditions trend cooler but windier Friday and especially
Saturday at the fire. Saturday will be the windiest day with
sustained southwest winds of 15 to 20 mph with gusts up to 40 mph
Saturday afternoon. Relative humidities will remain dry in the low
to mid teens. RH recoveries will be poor to fair overnight.

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

.FRIDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....102-106.
Min humidity........13-17 percent.
Wind (20 ft)........Northwest winds 7 to 11 mph shifting
                    west-southwest 8 to 12 mph with gusts to 20
                    mph after 1400.
Mixing height.......Inversion lifting around 0800. Mixing height
                    increasing to 10500 ft AGL in the afternoon.
Transport winds.....Northwest 10 to 14 mph in the morning becoming
                    southwest 22 to 26 mph after 1100.
Ventilation Index...Moderate (344) increasing to very high (1355)
                    in the afternoon.

.FRIDAY NIGHT...

Sky/weather.........Mostly clear.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....64-68.
Max humidity........54-58 percent.
Wind (20 ft)........Northwest winds 9 to 13 mph with gusts to
                    around 25 mph in the evening decreasing to 5 to
                    8 mph with gusts to 15 mph after 2200.
Mixing height.......Falling to 500 ft AGL around 2100.
Transport winds.....Northwest 19 to 25 mph in the evening
                    decreasing to 11 to 15 mph after 0100.
Ventilation Index...Very high (1221) decreasing to low (66)
                    overnight.

.SATURDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....92-96.
Min humidity........11-15 percent.
Wind (20 ft)........West winds 3 to 7 mph in the morning shifting
                    to the southwest 15 to 20 mph with gusts to 40
                    mph after 1200.
Mixing height.......Inversion lifting around 0800. Mixing height
                    increasing to 9500 ft AGL in the afternoon.
Transport winds.....West-northwest 12 to 16 mph in the early morning
                    becoming southwest 38 to 42 mph after 1100.
Ventilation Index...High (633) increasing to very high (2211) in
                    the afternoon.

$$
Forecaster...RFKS
Requested by...Ryan Scharnhorst
Type of request...WILDFIRE
.TAG 2618085.0/OTX
.DELDT 07/23/26
.FormatterVersion 2.0.0
.EMAIL ryan.scharnhorst@pullman-wa.gov