011
FNUS76 KOTX 121240
FWSOTX

Spot Forecast for Libby Creek...USFS
National Weather Service Spokane WA
540 AM PDT Tue May 12 2026

Forecast is based on forecast start time of 0600 PDT on May 12.
.DISCUSSION...

Warm, dry conditions and terrain driven winds early today.
Clouds increase this after ahead of an approaching weather
system. Chances for precipitation increase late tonight, largely
after 2300. Rain chances increase to likely Wednesday, with
a modest chance of wetting rains. Winds will be slightly
breezy this afternoon, decline this evening, then increase
again overnight and become stronger Wednesday, especially
in the afternoon. Any thunderstorms that develop near the
project will bring a risk of gusty outflow winds up to 35 mph.
Precip amounts outside of thunderstorms expected to be around
0.05-0.10 are forecast.

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.........Mostly sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 71.
Min humidity........20-25 percent.
Wind (20 ft)........Southeast winds 2 to 4 mph...increasing to
                    5 to 10 mph, with gusts near 15 mph after 1100.
                    Ridgetop gusts near 25 mph.
Mixing height.......3500 ft AGL increasing to 4000 ft AGL in the
                    afternoon.
Transport winds.....Southeast 8 to 12 mph.
Ventilation Index...Moderate (366) increasing to moderate (441) in
                    the afternoon.

.TONIGHT...

Sky/weather.........Mostly cloudy. A 20 percent chance of rain
                    after 2300.
CWR.................5 percent.
Chance of lightning.5 percent.
Min temperature.....48-51.
Max humidity........74 percent.
Wind (20 ft)........Southwest winds around 5 mph shifting to the
                    northwest 6 to 11 mph overnight with gusts
                    to 20 mph. Ridgetop wind gusts 25-30 mph.
Mixing height.......3500 ft AGL falling to 500 ft AGL.
Transport winds.....Southwest around 7 mph shifting to the
                    northwest overnight.
Ventilation Index...Moderate (311) decreasing to low (61)
                    overnight.

.WEDNESDAY...

Sky/weather.........Cloudy. Rain showers likely in the morning,
                    then rain showers and slight chance of
                    thunderstorms in the afternoon.
CWR.................50 percent.
Chance of lightning.15 percent.
Max temperature.....Around 57.
Min humidity........51 percent.
Wind (20 ft)........Northwest winds 12 to 18 mph with gusts to
                    25-35 mph. Ridgetop wind gusts up to 50 mph.
                    Gusty and erratic winds expected
                    near thunderstorms in the afternoon.
Mixing height.......3000 ft AGL increasing to 4000 ft AGL in the
                    afternoon.
Transport winds.....Northwest 16 to 19 mph.
Ventilation Index...Moderate (357) increasing to high (719) in the
                    afternoon.

$$
Forecaster...MSC
Requested by...Katy Giddings
Type of request...WILDFIRE
.TAG 2613184.4/OTX
.DELDT 05/12/26
.FormatterVersion 2.0.0
.EMAIL rebbecca.fry@usda.gov,brian.d.campbell@usda.gov,benjamin.young@usda.gov,youngben77@gmail.com,rebecca.hasher@gmail.com