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FNUS76 KOTX 242323
FWSOTX

Spot Forecast for Pioneer...NPS
National Weather Service Spokane WA
423 PM PDT Tue Sep 24 2024

Forecast is based on forecast start time of 0600 PDT on September 25.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
The arrival of a strong cold front Wednesday afternoon will bring
gusty westerly winds and rain showers. Rain amounts between 0.10-0.20
inches is forecast. Drier air behind the front will result in lower
relative humidity for Thursday.  Then another system arrives for
Thursday Night with more rain showers in the forecast.

.WEDNESDAY...

Sky/weather.........Mostly cloudy. A 40 percent chance of rain showers
                    in the morning then a 90 percent chance of rain
                    showers in the afternoon. A 20 percent chance of
                    an afternoon thunderstorm.
CWR.................60 percent.
LAL.................1...a 20 percent chance of 2.
Max temperature.....1100 ft elevation: 74 near the lake at 1200...
                    dropping into the 60s in the afternoon.
                    6000 ft elevation: 59 near ridge top at 1200...
                    dropping into the upper 40s in the afternoon.
Min humidity........48-60 percent...increasing relative humidity in
                    the afternoon to 65-90 percent.
Wind (20 ft)........West 4 to 8 mph with gusts up to 20 mph, except
                    on ridgetops west 8 to 16 mph with gusts up to
                    30 mph.
Mixing height.......1000 ft AGL increasing to 3000-4000 ft AGL
                    between 1100-1300, decreasing to 1000-2000 ft AGL
                    1400-1700.
Transport winds.....West 10 to 20 mph.
Haines Index........2 Very Low.

.WEDNESDAY NIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Chance of rain showers and slight chance of
                    thunderstorms in the evening.
CWR.................20 percent.
LAL.................1...a 20 percent chance of 2.
Min temperature.....1100 ft elevation: 47 near the lake.
                    6000 ft elevation: 32 near ridge top.
Max humidity........80-95 percent.
Wind (20 ft)........Northwest 6 to 13 mph with gusts up to 25 mph
                    except 10 to 18 mph with gusts up to 35 mph
                    on ridgetops in the evening, decreasing to
                    4 to 8 mph with gusts to 15 mph overnight.
Mixing height.......Near the surface.
Transport winds.....West 15 to 20 mph in the evening decreasing to
                    5 to 15 mph overnight.
Haines Index........4 Low.

.THURSDAY...

Sky/weather.........Mostly sunny in the morning, increasing clouds
                    in the afternoon.
CWR.................0 percent.
LAL.................1.
Max temperature.....1100 ft elevation: 70.
                    6000 ft elevation: 51.
Min humidity........28-40 percent.
Wind (20 ft)........Downslope/downvalley 4 to 8 mph in the morning
                    then south to southwest wind 5 to 10 mph with
                    gusts up to 17 mph in the afternoon.
Mixing height.......Near the surface through 1000 PDT increasing to
                    3500 ft AGL in the afternoon.
Transport winds.....Southwest 8 to 12 mph.
Haines Index........4 Low.

.THURSDAY NIGHT...

Sky/weather.........Mostly cloudy. A 60 percent chance of rain showers.
CWR.................40 percent.
LAL.................1.
Min temperature.....1100 ft elevation: 54 near the lake.
                    6000 ft elevation: 39 near ridge top.
Max humidity........80-95 percent.
Wind (20 ft)........Southwest 4 to 10 mph with gusts up to 20 mph, except
                    Northwest 4 to 10 mph on Lake Chelan. Strongest wind
                    gusts on ridge tops.
Mixing height.......500-1000 ft AGL.
Transport winds.....Southwest 10 to 15 mph in the evening becoming west
                    10 to 15 mph overnight.
Haines Index........4 Low.

$$
Forecaster...JW
Requested by...Geoff Hibbs
Type of request...WILDFIRE
.TAG 2422791.4/OTX
.DELDT 09/24/24
.FormatterVersion 2.0.0
.EMAIL zachary_w_allen@nps.gov,geoff_hibbs@nps.gov,sofia_ecker@nps.gov,anna_valentine@nps.gov,teague_walsh-felz@nps.gov