372
FNUS76 KOTX 241109
FWSOTX

Spot Forecast for Railroad...SE WA Type 3 IMT - Team 1
National Weather Service Spokane WA
409 AM PDT Fri Jul 24 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 remain hot today, then trend cooler Saturday with a dry
cold front pushing by. Winds will be increasing through the
afternoon and evening, before decreasing overnight. Winds increase
again Saturday toward late morning, peaking between middle afternoon
and evening with sustained southwest winds of 15 to 20 mph with
gusts up to 40 mph Relative humidities will remain dry in the low
to mid teens. RH recoveries will be poor to fair overnight. Warm
to hot and dry, breezy conditions continue Sunday, with gusts
around 25 mph in the afternoon and evening.

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

.TODAY...

Sky/weather.........Sunny. Haze.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 99.
Min humidity........15-17 percent.
Wind (20 ft)........West winds 5 to 9 mph in the morning with
                    gusts to 15 mph, then becoming southwest 9 to
                    13 mph with gusts of 20 to 25 mph after 1400.
Mixing height.......1000 ft AGL increasing to 10500 ft AGL.
Transport winds.....West 10 to 14 mph in the morning becoming
                    southwest 22 to 26 mph after 1100.
Ventilation Index...Moderate (338) increasing to very high (1389)
                    in the afternoon.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Temp............69  71  74  76  82  86  90  93  96  97  98  99
RH..............54  52  48  41  35  29  25  21  19  18  18  17
20 FT wind dir..W   W   W   W   W   W   SW  SW  SW  SW  SW  SW
20 FT wind spd..9   8   8   7   6   5   4   6   9   10  11  12
20 FT wind gust.14  13  14  12  10  8   6   10  14  18  20  23
Mix hgt (kft)...0.5 0.5 1.0 2.0 3.0 4.0 6.0 7.5 8.5 9.5 10  11
Transp wind dir.W   W   W   W   W   W   W   SW  SW  SW  SW  SW
Transp wind spd.10  10  10  10  9   10  12  14  22  23  23  24

.TONIGHT...

Sky/weather.........Mostly clear. Haze early in the evening.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....Around 69.
Max humidity........50 percent.
Wind (20 ft)........West winds 13 to 20 mph with gusts to around 30
                    mph...decreasing to 7 to 13 mph with gusts to
                    18 mph after 0100-0200.
Mixing height.......9500 ft AGL decreasing to 1000 ft AGL.
Transport winds.....Northwest 19 to 25 mph in the evening
                    decreasing to 11 to 15 mph after 0100.
Ventilation Index...Very high (1358) decreasing to low (71)
                    overnight.

.SATURDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 91.
Min humidity........16-19 percent.
Wind (20 ft)........West winds 9 to 13 mph with gusts to around 20
                    mph shifting to the southwest 15 to 22 mph with
                    gusts to around 30 to 40 mph after 1100.
                    Strongest winds between 1400-2200 Saturday.
Mixing height.......Inversion lifting around 0800. Mixing height
                    increasing to 9500 ft AGL in the afternoon.
Transport winds.....Southwest 12 to 21 mph increasing to 25 to 30
                    mph late in the afternoon.
Ventilation Index...High (635) increasing to very high (2482) in
                    the afternoon.

$$
Forecaster...MSC
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,david_winter@firenet.gov,ecc@grantcountywa.gov,mxgarcia@grantcountywa.gov