202
FNUS76 KPDT 291901
FWSPDT

Spot Forecast for Shevlin TREX Training...USFS DEF
National Weather Service Pendleton OR
1201 PM PDT Mon Apr 29 2024

Forecast is based on ignition time of 0800 PDT on April 30.
***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...A fast moving system will track across Oregon on Tuesday,
keeping snow levels down to the valley floors and increasing wind over
central Oregon.  Precipitation will end Tuesday night, and drier and
warmer conditions are in store for Wednesday.


.TUESDAY...

Sky/weather.........Partly cloudy (30-40 percent). Chance of snow
                    and rain showers mixed, mainly after 1100 PDT.
                    Snow levels around 3800 feet and little to no
                    snow accumulation at the burn site.
CWR.................10 percent.
LAL.................1.
Max temperature.....46.
Min humidity........41 percent.
Wind (20 ft)........Southwest-West 5-10 mph increasing to 7-13 mph
                    in the afternoon.
Ridgetop wind.......Southwest-West 8-14 mph with strongest winds late
                    afternoon.
Mixing height.......1500 ft AGL rising to 7000 ft AGL.
Transport winds.....West 20-25 mph.
Haines Index........2 (very low).

TIME (PDT)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
Temp............30     38     42     44     45     42
RH..............66     56     46     42     44     48
20 ft wind......SW 8   SW 8   W 11   W 13   W 13   W 12
20 ft wind gust.11     11     13     16     16     16


.TUESDAY NIGHT...

Sky/weather.........Partly cloudy (25-35 percent). Chance of
                    light snow/rain mixed before 2200 PDT.
CWR.................less than 10 percent.
LAL.................1.
Min temperature.....26-29.
Max humidity........79-84 percent.
Wind (20 ft)........West 5-10 mph.
Ridgetop wind.......West-Northwest 8-12 mph.
Mixing height.......lowering to 500 ft AGL overnight.
Transport winds.....West around 20 mph decreasing to 8 mph late
                    in the evening.
Haines Index........3 (very low).


.WEDNESDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....54-57.
Min humidity........23-28 percent.
Wind (20 ft)........West-Northwest 5-8 mph.
Ridgetop wind.......West-Northwest 5-8 mph.
Mixing height.......rising to 8000 ft AGL.
Transport winds.....Northwest 8-12.
Haines Index........4 (low).

$$

Forecaster...Wister
Requested by...Natalie Kuntz
Type of request...PRESCRIBED
.TAG 2412689.0/PDT
.DELDT 04/29/24
.FormatterVersion 2.0.0
.EMAIL natalie.kuntz@usda.gov