730
FNUS76 KPDT 251922
FWSPDT

Spot Forecast for Swauk Pine...USFS
National Weather Service Pendleton OR
1222 PM PDT Fri Apr 25 2025

Forecast is based on ignition time of 0700 PDT on April 26.
***Thunderstorms imply gusty and erratic winds***
***Winds are 20 foot 10-minute averages***
***CWR-Chance of wetting rain 0.10 or greater***

If you have questions or concerns with this forecast, please
contact our office at (541) 276-8134.

.DISCUSSION...Warm, dry conditions, low afternoon RH, and terrain-driven winds
are forecast through Saturday morning. A cooling trend accompanied by a rise
in afternoon RH and good to excellent overnight recovery is forecast Sunday
into early next week. Saturday afternoon through Tuesday, the large-scale
weather pattern will support persistent westerly winds, strongest Sunday,
through the Cascade gaps. However, winds at the burn site are forecast to be
lighter due to the influence of local terrain. Confidence in the wind forecast
is medium (60%). There is a very low (5-10%) chance of an afternoon rain shower
Saturday.

.SATURDAY...

Sky/weather.........Mostly sunny (25-35 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Max temperature.....71-74.
Min humidity........25-30 percent.
Wind (20 ft)........Terrain-driven (upslope, upvalley) winds 4-8 mph with gusts
                    to 12 mph in the morning. West-northwest winds 6-10 mph with
                    gusts up to 20 mph in the afternoon.
Ridgetop wind.......Terrain-driven (upslope, upvalley) winds 4-8 mph with gusts
                    to 12 mph in the morning. West-northwest winds 8-12 mph with
                    gusts up to 25 mph in the afternoon.
Mixing height.......Increasing to 7000-7500 ft AGL by afternoon.
Transport winds.....Northwest 9-14 mph, highest in the afternoon.

.SATURDAY NIGHT...

Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Min temperature.....37-40.
Max humidity........75-80 percent.
Wind (20 ft)........Northwest winds 6-10 mph with gusts up to 20 mph in the evening,
                    becoming drainage 2-5 mph overnight.
Ridgetop wind.......Northwest winds 8-12 mph with gusts up to 20 mph in the evening,
                    becoming northwest to north 2-6 mph overnight.
Mixing height.......Decreasing to 600-800 ft AGL overnight.
Transport winds.....Northwest 10-12 mph in the evening, decreasing to 4-6 mph
                    overnight.

.SUNDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....64-67.
Min humidity........34-39 percent.
Wind (20 ft)........Southwest to west winds 4-6 mph through mid-morning, becoming
                    northwest winds 6-10 mph with gusts of 15-20 mph by afternoon.
Ridgetop wind.......West to northwest 4-7 mph through mid-morning, becoming
                    northwest winds 7-12 mph with gusts of 15-25 mph by afternoon.
Mixing height.......Increasing to 4500-5000 ft AGL by afternoon.
Transport winds.....Northwest 6-10 mph morning, becoming 10-15 mph afternoon.

$$
Forecaster...Plunkett
Requested by...KB
Type of request...PRESCRIBED
.TAG 2511199.4/PDT
.DELDT 04/25/25
.FormatterVersion 2.0.0
.EMAIL kenton.bass@usda.gov