231
FNUS76 KOTX 011010
FWSOTX

Spot Forecast for Katy Creek...USFS Colville NF
National Weather Service Spokane WA
310 AM PDT Mon Sep 1 2025

Forecast is based on forecast start time of 0600 PDT on September 01.
If conditions become unrepresentative...contact the National Weather
Service.

...RED FLAG WARNING IN EFFECT UNTIL 11 AM PDT THIS MORNING...
...HEAT ADVISORY IN EFFECT FROM 11 AM TUESDAY TO 8 PM PDT
THURSDAY...

.DISCUSSION...

High pressure will be over the fire through the week delivering
hot temperatures and dry and unstable conditions each afternoon
with a deep mixing layer. Winds will shift from northwest in the
morning to southeast in the afternoon. Overnight humidity
recoveries on the midslopes will be poor.

.TODAY...

Sky/weather.........Partly cloudy. Haze. 10% chance of dry
                    thunderstorms before 0900 PDT.
CWR.................5 percent.
Chance of lightning.10 percent.
Max temperature.....93.
Min humidity........24 percent.
Wind (20 ft)........Northwest winds 2 to 4 mph shifting to the
                    southeast after 1300 PDT.
Mixing height.......Inversion lifting around 0900 PDT
                    increasing to 9500 ft AGL in the afternoon.
Transport winds.....Northwest 5 to 8 mph shifting to the southeast
                    11 to 14 mph after 1100 PDT.

.TONIGHT...

Sky/weather.........Partly cloudy.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....67.
Max humidity........37 percent.
Wind (20 ft)........South winds 3 to 6 mph in the evening
                    becoming northwest after 2200 PDT.
Mixing height.......Falling to near surface after 1930 PDT.
Transport winds.....South 7 to 9 mph shifting northwest
                    after 2200 PDT.

.TUESDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....96.
Min humidity........22 percent.
Wind (20 ft)........Northwest winds 2 to 4 mph in the morning
                    becoming southeast after 1300 PDT.
Mixing height.......Inversion lifting around 0900 PDT
                    increasing to 9500 ft AGL in the
                    afternoon.
Transport winds.....Northwest 4 to 7 mph in the morning
                    shifting to the south 7 to 9 mph after 1100
                    PDT.

$$
Forecaster...RFKS/SB
Requested by...Ben Proffitt
Type of request...WILDFIRE
.TAG 2521047.0/OTX
.DELDT 09/01/25
.FormatterVersion 2.0.0
.EMAIL Benjamin.proffitt@usda.gov