293
FNUS76 KPDT 261235
FWSPDT

Spot Forecast for Bowman Creek Rx...Washington DNR
National Weather Service Pendleton OR
535 AM PDT Thu Sep 26 2024

Forecast is based on ignition time of 0600 PDT on September 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...Increasing pressure today, in the wake of the
departing system, will provide a much cooler and sunny day across
the fire area. Winds will also be much lighter today, initially
out of the north before becoming more from the southwest by 11 AM.
Winds will turn more from the west after 2 PM and increasing
through 6 PM with gusts of up to 15 mph possible in exposed areas.
Afternoon humidities will drop 25% from Wednesday as excellent
overnight recoveries are anticipated into Friday morning.

.TODAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....70-73.
Min humidity........26-31 percent.
Wind (20 ft)........North winds 3 to 6 mph early in the morning
                    becoming light, then becoming southwest 5 to 8
                    mph late in the morning increasing out of the
                    west southwest 5 to 10 mph after 2 PM.
Ridgetop wind.......North winds 4 to 7 mph early in the morning, then
                    becoming southwest 6 to 10 mph late in the
                    morning increasing out of the west southwest 10
                    to 15 mph after 2 PM.
Mixing height.......3500 ft AGL.
Transport winds.....West around 7 mph early in the morning becoming
                    light, then becoming southwest 6 to 7 mph late
                    in the morning.
Haines Index........2 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (PDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Temp............43     44     53     61     68     70
RH..............94     94     74     51     37     32
20 ft wind......N 5    W 4    W 4    S 6    SW 8   SW 8
20 ft wind gust.6      6      6      7      10     10

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....49-52.
Max humidity........73-78 percent.
Wind (20 ft)........West winds 5 to 10 mph shifting to the northwest
                    5 to 8 mph after 8 PM.
Ridgetop wind.......West winds 6 to 12 mph shifting to the northwest
                    5 to 10 mph after 8 PM.
Mixing height.......500 ft AGL.
Transport winds.....West 7 to 9 mph.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

.FRIDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....76-79.
Min humidity........35-40 percent.
Wind (20 ft)........Northwest winds 3 to 7 mph shifting to the west
                    5 to 11 mph by 10 AM.
Ridgetop wind.......Northwest winds 4 to 8 mph shifting to the west
                    8 to 16 mph by 10 AM.
Mixing height.......4000 ft AGL.
Transport winds.....West 7 to 13 mph.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

$$
Forecaster...Callihan
Requested by...Adam Lieberg
Type of request...PRESCRIBED
.TAG 2423065.0/PDT
.DELDT 09/26/24
.FormatterVersion 2.0.0
.EMAIL alieberg@columbialandtrust.org