732
FNUS76 KPDT 220113
FWSPDT

Spot Forecast for tenino pile rx 11/22...BIA WSA
National Weather Service Pendleton OR
513 PM PST Thu Nov 21 2024

Forecast is based on ignition time of 0800 PST on November 22.
***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...Precipitation, associated with a strong low pressure system
off the coast, will spread east of the Cascades tonight and Friday morning
with light to moderate rain and the burn site.  A cold front will follow
Friday night and lower snow levels down to around 3500 feet. There will be
light snow accumulations, but the chance of snow amounts greater than an inch
is only 20 percent. It will be gusty along the ridges and slightly breezy
along the 20-foot level on Friday.


.FRIDAY...

Sky/weather.........Mostly cloudy (70-80 percent). Periods of rain, mainly
                    in the morning.
CWR.................90 percent. Rainfall amounts 0.25-0.35 inches expected.
LAL.................1.
Max temperature.....44.
Min humidity........90 percent.
Wind (20 ft)........Variable 0-2 mph...becoming South 1-3 mph after 1000 PST
                    then Southwest 3-8 mph after 1200 PST. Afternoon gusts to
                    12 mph.
Ridgetop wind.......South 8-12 mph shifting to the Southwest 10-15 mph gusting to
                    23 mph in the afternoon.
Mixing height.......near surface rising to 2500 ft AGL in the mid afternoon.
Transport winds.....South around 15 mph increasing to southwest 25 mph.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

TIME (PST)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
Temp............41     44     44     44     42     37
RH..............98     95     95     90     90     93
20 ft wind......calm   S 3    SSW 3  SW 8   SW 7   SW 7
20 ft wind gust.                     12     10     10

.FRIDAY NIGHT...

Sky/weather.........Mostly cloudy (65-75 percent). Rain likely in
                    the evening. Snow likely in the late evening
                    and overnight. Snow levels lowering to 3600 feet.
                    Snow accumulations less than half an inch.
CWR.................25 percent.
LAL.................1.
Min temperature.....31-34.
Max humidity........83-88 percent.
Wind (20 ft)........Southwest 3-8 mph with strongest winds in the evening
                    becoming variable 0-2 mph after midnight.
Ridgetop wind.......Southwest 6-12 mph decreasing to 3-6 mph after midnight
                    then shifting East-Southeast 1-3 mph early Saturday morning.
Mixing height.......500 ft AGL.
Transport winds.....Southwest 10-15 mph with strongest winds in the early evening.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

.SATURDAY...

Sky/weather.........Partly sunny (55-65 percent). Snow and rain likely in
                    the morning then a chance of rain and snow late in the afternoon.
                    Snow level rising to 3800 feet.
CWR.................20 percent.
LAL.................1.
Max temperature.....40-43.
Min humidity........70-75 percent.
Wind (20 ft)........West-Southwest around 5 mph...becoming Southwest 5-8 mph.
Ridgetop wind.......Southwest winds 5-8 mph. Gusts to 15 mph.
Mixing height.......maximum 3500 ft AGL.
Transport winds.....Southwest around 15 mph increasing to 20
                    mph in the afternoon.
Haines Index........3 or very low potential for large
                    plume dominated fire growth.

$$

Forecaster...Wister
Requested by...fuels planner
Type of request...PRESCRIBED
.TAG 2427201.0/PDT
.DELDT 11/21/24
.FormatterVersion 2.0.0
.EMAIL joel.thompson@ctwsbnr.org,antone.moody@ctwsbnr.org