507
FNUS76 KPDT 201121
FWSPDT

Spot Forecast for Bird Track 634B...USFS
National Weather Service Pendleton OR
421 AM PDT Sun Apr 20 2025

Forecast is based on ignition time of 0500 PDT on April 20.
***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...Dry conditions during the day today, but an upper
level weather disturbance will bring increasing rain/snow
chances to the site after 5PM. Any accumulations will be very
light, with less than an inch of snow and up to a trace of
rain. Winds will generally be from the west, but will be
from the northwest this afternoon. Afternoon RHs will drop
into the 30s today and mid to upper 20s tomorrow, with
excellent recovery overnight.

.TODAY...

Sky/weather.........Mostly sunny (45-55 percent).
CWR.................0 percent.
Chance of lightning.5 percent.
Max temperature.....54-57.
Min humidity........34-39 percent.
Wind (20 ft)........West winds 5 to 10 mph turning to the
northwest after 12PM.
Ridgetop wind.......West winds 5 to 10 mph increasing to
7 to 13 mph after 12PM.
Mixing height.......5600 ft AGL early in the morning.
Transport winds.....West around 13 mph.

.TONIGHT...

Sky/weather.........Partly cloudy (45-55 percent) then becoming
                    mostly cloudy (65-75 percent). Slight chance of
                    rain showers in the evening, then chance of
                    snow showers and rain showers overnight.
CWR.................0 percent.
Chance of lightning.4 percent.
Min temperature.....33-36.
Max humidity........89-94 percent.
Wind (20 ft)........Northwest winds 5 to 10 mph turning to the
west after 8PM.
Ridgetop wind.......West winds 8 to 14 mph.
Mixing height.......1200 ft AGL.
Transport winds.....West around 20 mph.

.MONDAY...

Sky/weather.........Mostly cloudy (70-80 percent) then becoming
                    mostly sunny (25-35 percent). Slight chance of
                    snow showers in the morning.
CWR.................0 percent.
Chance of lightning.4 percent.
Max temperature.....51-54.
Min humidity........26-31 percent.
Wind (20 ft)........West winds 5 to 10 mph.
Ridgetop wind.......West winds 6 to 12 mph.
Mixing height.......5700 ft AGL.
Transport winds.....West around 19 mph.

$$
Forecaster...Lawhorn
Requested by...RXB2
Type of request...PRESCRIBED
.TAG 2510786.2/PDT
.DELDT 04/20/25
.FormatterVersion 2.0.0
.EMAIL terry.george@usda.gov