638
FNUS76 KPDT 071150
FWSPDT

Spot Forecast for Bowman Creek Rx...Washington DNR
National Weather Service Pendleton OR
450 AM PDT Tue Oct 7 2025

Forecast is based on ignition time of 0900 PDT on October 07.
***Thunderstorms imply gusty and erratic winds***
***Winds are 20 foot 10-minute averages***
***CWR-Chance of wetting rain 0.10 or greater***
***Ventilation Index is derived from the
   transport wind multiplied by the mixing
   height in 100`s of feet. Index categories
   are a generalized indicator only.***

If you have questions or concerns with this forecast, please
contact our office at (541) 276-8134.

.DISCUSSION...Dry and warmer conditions over the fire area today
as the ridge settles over. Winds today will be slightly variable
remaining below 10 mph. Daytime RHs will be in the low to mid 20%
with upper 80 to low 90% recoveries. A frontal system will bring
cooler temperatures and a shift in winds. Winds will be from the
west 5 to 10 in the morning and once the inversion breaks around
11 AM, winds will increase to 10 to 15 mph and daytime RHs in the
low to mid 30%.

.TODAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....73-76.
Min humidity........20-25 percent.
Wind (20 ft)........East winds 5 to 7 mph shifting to the southwest
                    5 to 6 mph after 11 AM then south after 2 PM.
Ridgetop wind.......East winds 6 to 8 mph shifting to the southwest
                    6 to 7 mph after 11 AM then south after 2 PM.
Mixing height.......3400 ft AGL.
Transport winds.....Southeast 6 to 8 mph shifting to the south 5 to
                    7 mph late in the afternoon.
Ventilation Index...Poor (40) increasing to poor (180) in the
                    afternoon.

TIME (PDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM
Chc of ltng (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............47  54  61  65  69  70  72  73  71  68  64  60
RH..............55  46  36  32  28  25  25  23  25  28  33  36
20 FT wind dir..E   E   SE  SE  SE  S   S   S   SW  SW  SW  NW
20 FT wind spd..5   5   6   6   6   7   7   7   6   6   6   5
20 FT wind gust.6   6   7   7   7   8   8   8   8   8   8   6

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....39-42.
Max humidity........87-92 percent.
Wind (20 ft)........Southwest winds 5 to 7 mph shifting to the
                    northwest after 8 PM, then shifting to the
                    west overnight.
Ridgetop wind.......Southwest winds 6 to 8 mph shifting to the
                    northwest after 8 PM, then shifting to the
                    west overnight.
Mixing height.......600 ft AGL.
Transport winds.....Southwest around 5 mph shifting to the west 5
                    to 8 mph early in the evening.
Ventilation Index...Poor (40).

.WEDNESDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....65-68.
Min humidity........32-37 percent.
Wind (20 ft)........West winds 5 to 10 mph increasing to 15 mph
                    after 11 AM.
Ridgetop wind.......West winds 7 to 12 mph increasing to 17 mph
                    after 11 PM.
Mixing height.......3200 ft AGL.
Transport winds.....West 7 to 15 mph increasing to around 18 mph
                    late in the afternoon.
Ventilation Index...Poor (50) increasing to fair (370) in the
                    afternoon.

$$
Forecaster...Bennese
Requested by...Adam Lieberg
Type of request...PRESCRIBED
.TAG 2522731.6/PDT
.DELDT 10/06725
.FormatterVersion 2.0.0
.EMAIL alieberg@columbialandtrust.org