811
FNUS76 KOTX 180000
FWSOTX

Spot Forecast for Pioneer...NPS
National Weather Service Spokane WA
500 PM PDT Tue Sep 17 2024

Forecast is based on forecast start time of 0700 PDT on September 18.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

Dry weather is expected through Saturday. Northwest flow is expected
to bring gusty northwest winds each afternoon and evening this week
especially along Lake Chelan and on ridge tops. A weather system
early next week has the potential to bring some rain Sunday into Monday,
with a 30 percent chance of a wetting rain.

.WEDNESDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
LAL.................1.
Max temperature.....1100 ft elevation: 80 near the river.
                    6000 ft elevation: 56 near ridge top.
Min humidity........1100 ft elevation: 30 percent.
                    6000 ft elevation: 47 percent.
Wind (20 ft)........Northwest winds 4 to 8 mph in the morning
                    increasing to 6 to 12 mph with gusts to 20
                    mph in the afternoon. Strongest winds on ridge
                    tops and along Lake Chelan.
Mixing height.......Near the surface through 0900 PDT increasing to
                    3000 ft AGL in the afternoon.
Transport winds.....Northwest 10 to 15 mph.
Haines Index........2 Very Low.

.WEDNESDAY NIGHT...

Sky/weather.........Mostly clear.
CWR.................0 percent.
LAL.................1.
Min temperature.....1100 ft elevation: 55 near the river.
                    6000 ft elevation: 42 near ridge top.
Max humidity........65-90 percent, highest recoveries ridge tops.
Wind (20 ft)........Downslope/downvalley 3 to 7 mph, except northwest
                    4 to 9 mph with gusts up to 20 mph along Lake Chelan.
Mixing height.......Near the surface.
Transport winds.....Northwest 5 to 15 mph.
Haines Index........4 Low.

.THURSDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
LAL.................1.
Max temperature.....1100 ft elevation: 78 near the river.
                    6000 ft elevation: 55 near ridge top.
Min humidity........1100 ft elevation: 27 percent.
                    6000 ft elevation: 44 percent.
Wind (20 ft)........Northwest 3 to 7 mph in the morning
                    increasing to 7 to 14 mph with gusts to 25
                    mph in the afternoon. Strongest winds on ridge
                    tops and along Lake Chelan.
Mixing height.......Near the surface through 0900 PDT increasing to
                    3500 ft AGL in the afternoon.
Transport winds.....Northwest around 5 mph in the morning increasing to
                    10 to 17 mph in the afternoon.
Haines Index........4 Low.

.THURSDAY NIGHT...

Sky/weather.........Mostly clear.
CWR.................0 percent.
LAL.................1.
Min temperature.....1100 ft elevation: 54 near the river.
                    6000 ft elevation: 38 near ridge top.
Max humidity........60-80 percent, highest recoveries ridge tops.
Wind (20 ft)........Northwest 6 to 14 mph with gusts up to 30 MPH.
                    Strongest winds on ridge tjops and along Lake
                    Chelan.
Mixing height.......Near the surface.
Transport winds.....Northwest 10 to 20 mph.
Haines Index........4 Low.

$$
Forecaster...JW
Requested by...Anna Valentine
Type of request...WILDFIRE
.TAG 2422366.4/OTX
.DELDT 09/17/24
.FormatterVersion 2.0.0
.EMAIL anna_valentine@nps.gov,geoff_hibbs@nps.gov.