FNUS76 KOTX 050800

FWSOTX



Spot Forecast for Pierce Hand Piles...USWFS

National Weather Service Spokane WA

1200 AM PST Thu Nov 5 2026



Forecast is based on ignition time of 0900 PST on November 05. 

.DISCUSSION...



A quick moving weather system moves through the project on 

Thursday, with light rain up to 0.15 inches expected. It will be 

moist with high minimum afternoon relative humidity. Winds will be

out of the south during the day before shifting to the southeast 

in the evening. Another weather system Friday into Saturday brings

up to an additional 0.14 inches of rain. The weather pattern 

remains active Sunday through the middle of next week with periods

of increased precipitation chances. 



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). 

***************************************************************



.THURSDAY...



Sky/weather.........Mostly cloudy then becoming mostly sunny. 

                    70% chance of rain in the morning. 15% chance 

                    of rain showers in the afternoon. 24-hour 

                    rain totals up to 0.15 inches.

CWR.................30 percent. 

Chance of lightning.0 percent. 

Max temperature.....45. 

Min humidity........85-90 percent. 

Wind (20 ft)........South 1 to 3 mph in the morning increasing to 

                    south 3 to 6 mph in the afternoon. 

Mixing height.......Inversion lifting around 1000 hours with mixing 

                    height as high as 2000 ft AGL in the afternoon. 

Transport winds.....Southwest 5 to 7 mph. 

Ventilation Index...Low (93). 



.THURSDAY NIGHT...



Sky/weather.........Partly cloudy then becoming mostly cloudy. 

                    Areas of fog. 

CWR.................0 percent. 

Chance of lightning.0 percent. 

Min temperature.....32. 

Max humidity........100 percent. 

Wind (20 ft)........Southeast 3 to 6 mph. 

Mixing height.......Falling to near surface around 1600 hours. 

Transport winds.....South around 8 mph. 

Ventilation Index...Low (35). 



$$

Forecaster...VT

Requested by...Jordan Reeves

Type of request...PRESCRIBED

.TAG 2625151.0/OTX

.DELDT 11/05/26

.FormatterVersion 2.0.0

.EMAIL jordan_reeves@fws.gov