630
FNUS76 KOTX 041022
FWSOTX

Spot Forecast for Joint Chiefs Hand Piles @ Rondo Gulch...USFS
National Weather Service Spokane WA
222 AM PST Wed Nov 4 2026

Forecast is based on ignition time of 0600 PST on November 04.
.DISCUSSION...

Dry and sunny with low ventilation on Wednesday. Winds will
generally be light out of the west, with a slight increase out of
the south in the late afternoon. Better ventilation arrives
Thursday with stronger southwest transport winds, but this comes
with higher humidity and precipitation. There is a 65% chance for
0.10 inches of rain on Thursday. Drier conditions with low
ventilation are expected Friday and Saturday before another
weather system arrives Sunday. Chances for precipitation are lower
compared to Thursday, but this will result in stronger southwest
winds and ventilation at the project.

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.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....47-51.
Min humidity........57-62 percent.
Wind (20 ft)........Variable 0 to 2 mph in the morning becoming west
                    2 to 6 mph afer 1000 hours. Winds becoming south
                    to southeast around 1700 hours.
Mixing height.......Inversion lifting between 0900-1000 hours with mixing
                    height as high as 2000 ft AGL between 1200-1400 hours.
Transport winds.....West 1 to 3 mph.
Ventilation Index...Low (80).

.TONIGHT...

Sky/weather.........Mostly clear then becoming cloudy.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....Around 36.
Max humidity........100 percent.
Wind (20 ft)........South to southeast 2 to 6 mph.
Mixing height.......Falling to near the surface around 1600 hours.
Transport winds.....Southeast 6 to 8 mph.
Ventilation Index...Low (39).

.THURSDAY...

Sky/weather.........Cloudy. Rain. 24-hour precipitation totals between
                    0.10 and 0.30 inches.
CWR.................30 percent.
Chance of lightning.5 percent.
Max temperature.....43-47.
Min humidity........78-83 percent.
Wind (20 ft)........South winds 4 to 7 mph in the early morning
                    becoming southwest 7 to 11 mph after 0800 hours.
                    Gusts up to 17 mph in the late morning and afternoon.
Mixing height.......Inversion lifting between 0900-1000 hours with mixing
                    height as high as 2000 ft AGL between 1200-1400 hours.
Transport winds.....Southwest around 9 mph.
Ventilation Index...Moderate (210).

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Mostly cloudy. Lows in the mid 30s. Highs in the mid 40s.
Southeast winds 1 to 3 mph in the morning becoming south 2 to 4
mph in the afternoon. Low to moderate ventilation in the
afternoon.

.SATURDAY...
Mostly cloudy. Lows around 40. Highs in the mid 50s. East winds 1
to 4 mph. Low ventilation.


.SUNDAY...
Mostly cloudy with chance of showers. Lows in the lower 40s.
Highs around 50. East 1 to 3 mph in the early morning becoming south
to southwest to south winds 5 to 9 mph. Gusts up to 20 mph in the
late morning and afternoon.

$$
Forecaster...VT
Requested by...Patrick Warker
Type of request...PRESCRIBED
.TAG 2625022.2/OTX
.DELDT 11/04/26
.FormatterVersion 2.0.0
.EMAIL carl.coppert@usda.gov,evan.a.ratcliffe@usda.gov,patrick.warker@usda.gov,kyle.mann@usda.gov