260
FNUS76 KPDT 061158
FWSPDT

Spot Forecast for Bowman Creek Rx...Washington DNR
National Weather Service Pendleton OR
458 AM PDT Mon Oct 6 2025

Forecast is based on ignition time of 0600 PDT on October 06.
***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 conditions will prevail over the fire area with
low daytime RHs in the upper teens to low 20% increasing to moderate
overnight recoveries of upper 50% to low 60%. The inversion will break
after 1030AM allowing for the increase in winds. Winds will vary from the
northeast to southeast through the day with sustained winds of 5-8 mph
increasing up to near 12 after 11AM and decreasing 5-8 overnight and
into Tuesday.

.TODAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....71-74.
Min humidity........19-24 percent.
Wind (20 ft)........Northeast winds 5 to 8 mph shifting to the east
                    southeast 5 to 12 mph around 11 AM.
Ridgetop wind.......Northeast winds 5 to 8 mph shifting to the east
                    southeast 5 to 12 mph around 11 AM.
Mixing height.......4400 ft AGL.
Transport winds.....East 6 to 13 mph.
Ventilation Index...Poor (50) increasing to fair (410) in the
                    afternoon.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Chc of ltng (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............39  38  40  45  53  59  63  67  68  70  70  69
RH..............63  65  62  56  47  37  32  29  26  24  24  24
20 FT wind dir..NE   NE  NE  NE  NE  ESE ESE ESE ESE ESE ESE ESE
20 FT wind spd...7   7   7   7   7   8   8   8   11  11  11  12
20 FT wind gust..10  10  8   8   8   10  10  10  13  13  13  14

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....39-42.
Max humidity........56-61 percent.
Wind (20 ft)........East winds 5 to 12 mph shifting to the
                    northeast 5 to 8 mph around 11 PM.
Ridgetop wind.......East winds 5 to 12 mph shifting to the
                    northeast 5 to 8 mph around 11 PM.
Mixing height.......600 ft AGL.
Transport winds.....East 5 to 12 mph.
Ventilation Index...Poor (100) decreasing to poor (50) overnight.

.TUESDAY...

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)........Northeast winds 5 to 7 mph shifting to the
                    southwest around 11 AM.
Ridgetop wind.......Northeast winds 5 to 7 mph shifting to the
                    southwest around 11 AM.
Mixing height.......3500 ft AGL.
Transport winds.....East 5 to 7 mph shifting to the south 6 to 7
                    mph late in the afternoon.
Ventilation Index...Poor (30) increasing to poor (170) in the
                    afternoon.

$$
Forecaster...Bennese
Requested by...Adam Lieberg
Type of request...PRESCRIBED
.TAG 2522731.6/PDT
.DELDT 10/06/25
.FormatterVersion 2.0.0
.EMAIL alieberg@columbialandtrust.org