679
FNUS76 KPDT 221218
FWSPDT
SPOT FORECAST FOR BOWMAN CREEK RX...WASHINGTON DNR
NATIONAL WEATHER SERVICE PENDLETON OR
518 AM PDT TUE SEP 22 2026
FORECAST IS BASED ON IGNITION TIME OF 0600 PDT ON SEPTEMBER 22.
***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 TRANSPORT WIND
MULTIPLIED BY THE MIXING HEIGHT IN 100'S OF FT.
CATEGORIES ARE A GENERALIZED INDICATOR ONLY:
LOW (< 200), MODERATE (200-500), HIGH (500-700),
AND VERY HIGH (> 700). ***
IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST, PLEASE
CONTACT OUR OFFICE AT (541) 276-8134.
DISCUSSION
BREEZY WEST WINDS WILL IMPACT THE AREA LATER THIS
MORNING THROUGH THE EVENING HOURS, THEN BECOMING LIGHT OVERNIGHT.
WINDS WILL SHIFT WEST TOMORROW, BUT REMAIN LESS THAN 10MPH.
INCREASED WINDS TODAY WILL PUSH A MARINE AIRMASS OVER THE FIRE
AREA, WITH AFTERNOON RHS IN THE LOWER 40S. TOMORROW AFTERNOON, RHS
WILL DIP INTO THE UPPER 20S.
TODAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....72-75.
MIN HUMIDITY........40-45 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 8 MPH SHIFTING TO THE WEST
14 TO 20 MPH WITH GUSTS TO AROUND 27 MPH AFTER
9AM.
MIXING HEIGHT.......3100 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....WEST 10 TO 16 MPH INCREASING TO AROUND 20 MPH
LATE IN THE AFTERNOON.
VENTILATION INDEX...LOW (80) INCREASING TO MODERATE (460) 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............48 47 49 51 56 61 65 69 70 70 71 70
RH..............97 100 100 91 81 68 58 52 47 45 44 45
20 FT WIND DIR..NW NW W W W W W W W W W W
20 FT WIND SPD..7 7 8 12 13 14 16 17 18 19 20 20
20 FT WIND GUST. 14 16 18 19 22 24 25 27 27
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....42-45.
MAX HUMIDITY........82-87 PERCENT.
WIND (20 FT)........WEST WINDS 12 TO 18 MPH WITH GUSTS TO AROUND
25 MPH SHIFTING TO THE NORTHWEST 5 TO 8 MPH
AFTER 8PM, THEN BECOMING LIGHT DOWNSLOPE
WINDS AFTER 3AM.
MIXING HEIGHT.......500 FT AGL IN THE EVENING.
TRANSPORT WINDS.....WEST 13 TO 20 MPH DECREASING TO 6 TO 8 MPH LATE
IN THE EVENING.
VENTILATION INDEX...LOW (170) DECREASING TO LOW (30) OVERNIGHT.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (80-90 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....73-76.
MIN HUMIDITY........29-34 PERCENT.
WIND (20 FT)........LIGHT DOWNSLOPE WINDS BECOMING WEST 5 TO 10 MPH
AROUND 10AM.
MIXING HEIGHT.......4500 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....WEST 6 TO 12 MPH.
VENTILATION INDEX...LOW (30) INCREASING TO MODERATE (330) IN THE
AFTERNOON.
FORECASTER...LAWHORN
REQUESTED BY...ADAM LIEBERG
TYPE OF REQUEST...PRESCRIBED
.TAG 2622141.3/PDT
.DELDT 09/22/26
.FORMATTERVERSION 2.0.0
.EMAIL ALIEBERG@COLUMBIALANDTRUST.ORG
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