Suppression Forecast
Issued by NWS Pendleton, OR

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993
FNUS76 KPDT 261743
FWSPDT

Spot Forecast for Broman 301...Forest Service
National Weather Service Pendleton OR
1043 AM PDT Thu Apr 26 2018

Forecast is based on ignition time of 1100 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...Another day of dry and warm conditions can be
expected again today. The air mass is becoming more unstable. High
pressure is weakening and giving way to a low pressure system
off the Eastern Pacific that will be moving onshore tonight and
across Oregon on Friday. Anticipate scattered showers in southeast
Oregon by late Friday afternoon. Isolated thunderstorms are also
possible. Winds may quickly shift directions at the burn site late
Friday afternoon.


.REST OF TODAY...

Sky/weather.........Sunny.
CWR.................0 percent.
LAL.................1.
Max temperature.....77.
Min humidity........16 percent.
Wind (20 ft)........Southeast 3-6 mph.
Ridgetop wind.......Southeast 5-10 mph.
Mixing height.......4000 ft AGL increasing to 5000 ft AGL.
Transport winds.....Southeast around 7 mph.
Haines Index........4 (low).

.TONIGHT...

Sky/weather.........Clear.
CWR.................0 percent.
LAL.................1.
Min temperature.....40 top...46 bottom.
Max humidity........62 percent top...70 percent bottom.
Wind (20 ft)........Southeast 2-5 mph in the evening
                    becoming downslope/downvalley 1-3 mph.
Ridgetop wind.......East-Southeast 3-6 mph.
Mixing height.......4500 ft AGL decreasing to near surface overnight.
Transport winds.....East-Southeast around 5 mph.
Haines Index........5 (moderate).

.FRIDAY...

Sky/weather.........Mostly sunny then becoming mostly cloudy. A
                    slight chance of showers and thunderstorms in
                    the afternoon.
CWR.................less than 10 percent.
LAL.................1...becoming 2 in the afternoon.
Max temperature.....74.
Min humidity........23 percent.
Wind (20 ft)........Southeast winds 3-8 mph. Winds suddenly shifting to the west
                    5-10 mph after 1700. Gusty and erratic winds expected near
                    thunderstorms in the afternoon.
Ridgetop wind.......Southeast 5-10 mph...shifting to the south 5-10 mph late in
                    the afternoon.
Mixing height.......Near surface in the early morning increasing
to 7500 ft AGL during the day. Transport winds.....Southeast
around 10 mph. Haines Index........4 (low).

$$
Forecaster...Wister
Requested by...Kris Wood
Type of request...PRESCRIBED
.TAG 1807991.0/PDT
.EMAIL cgilbert@fs.fed.us,wcrippen@fs.fed.us



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