120
FNUS76 KPDT 101116
FWSPDT

Spot Forecast for White Swan WUI Burn...Yakama Agency
National Weather Service Pendleton OR
416 AM PDT Mon Jun 10 2024

Forecast is based on ignition time of 0800 PDT on June 10.
***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...A ridge of high pressure over the region will keep
winds light and diurnally driven today. Tuesday, a low pressure
system will pass to the north, ushering in breezy westerly winds.
Afternoon RH will be low both days, and overnight RH recovery is
anticipated to be moderate. Above-normal temperatures are also
expected.

.REST OF TODAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....85-88.
Min humidity........15-20 percent.
Wind (20 ft)........Northeast winds 3-6 mph shifting to the
                    northwest 3-6 mph late in the afternoon.
Ridgetop wind.......Northeast winds 3-6 mph shifting to the
                    northwest 3-6 mph late in the afternoon.
Mixing height.......Increasing to 7500-8000 ft AGL by afternoon.
Transport winds.....Light winds becoming west 5-8 mph late in
                    the morning.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

TIME (PDT)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
Temp............65     75     81     84     86     86
RH..............45     29     20     17     17     20
20 ft wind......NE 4   NE 4   E 5    NE 5   NE 5   NW 5
20 ft wind gust.

.TONIGHT...

Sky/weather.........Mostly clear (20-30 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....58-61.
Max humidity........43-48 percent.
Wind (20 ft)........Northwest winds 3-6 mph shifting to the
                    southwest 2-5 mph early in the evening.
Ridgetop wind.......Northwest winds 3-6 mph shifting to the
                    southwest 2-5 mph early in the evening.
Mixing height.......Decreasing to 400-700 ft AGL overnight.
Transport winds.....West-southwest 5-7 mph.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

.TUESDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....82-85.
Min humidity........20-25 percent.
Wind (20 ft)........West winds 5-10 mph with gusts to 15 mph in the
                    morning, becoming 14-19 mph with gusts of 25-35 mph
                    in the afternoon.
Ridgetop wind.......West winds 5-10 mph with gusts to 15 mph in the
                    morning, becoming 14-19 mph with gusts of 25-35 mph
                    in the afternoon.
Mixing height.......Increasing to 6700-7200 ft AGL by afternoon.
Transport winds.....West 6-12 mph in the morning, increasing to 15-20 mph
                    in the afternoon.
Haines Index........2 to 4 or very low to low potential for large
                    plume dominated fire growth.

$$
Forecaster...Plunkett
Requested by...Dolores Moore
Type of request...PRESCRIBED
.TAG 2415883.0/PDT
.DELDT 06/10/24
.FormatterVersion 2.0.0
.EMAIL Dolorez.525@gmail.com