591
FNUS76 KOTX 062310
FWSOTX

Spot Forecast for Chestnut 260190...CWICC
National Weather Service Spokane WA
410 PM PDT Sat Jun 6 2026

Forecast is based on forecast start time of 1600 PDT on June 06.
.DISCUSSION...

Gusty westerly winds today behind a cold front passage. Winds will
peak late in the afternoon into the evening with gusts up to 25 mph.
Showers moving in from the west may also result in brief higher gusts
up to 30 mph through the late afternoon hours. Winds remain breezy
tonight into Sunday. Sunday will be drier.

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

.REST OF TODAY...

Sky/weather.........Mostly sunny. Slight chance of showers. 10
percent chance of thunderstorms through 2000.
CWR.................5 percent.
Chance of lightning.10 percent.
Max temperature.....66.
Min humidity........24-29 percent.
Wind (20 ft)........West winds 5-10 mph with gusts to 15-20 mph.
Mixing height.......8000 ft AGL.
Transport winds.....West up to 15 mph.
Ventilation Index...Very high (1211).

.TONIGHT...

Sky/weather.........Partly cloudy.
CWR.................0 percent.
Chance of lightning.5 percent.
Min temperature.....45.
Max humidity........55-60 percent.
Wind (20 ft)........West winds 5-10 mph with gusts to 15-20 mph.
Mixing height.......Falling to near surface around 2000.
Transport winds.....West up to 15 mph.
Ventilation Index...Very high (885) decreasing to low (41)
                    overnight.

.SUNDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....75
Min humidity........22-27 percent.
Wind (20 ft)........West winds 5-10 mph with gusts 15-20 mph.
Mixing height.......Inversion breaking at 0800 and increasing to
7000 feet in the afternoon.
Transport winds.....West up to 15 mph.
Ventilation Index...Moderate (456) increasing to high (761) in the
                    afternoon.

$$
Forecaster...AS/VMT
Requested by...Julie Wilson
Type of request...WILDFIRE
.TAG 2615090.0/OTX
.DELDT 06/06/26
.FormatterVersion 2.0.0
.EMAIL wacwc@firenet.gov