182
FNUS76 KPDT 211157
FWSPDT
SPOT FORECAST FOR BOWMAN CREEK RX...WASHINGTON DNR
NATIONAL WEATHER SERVICE PENDLETON OR
457 AM PDT MON SEP 21 2026
FORECAST IS BASED ON IGNITION TIME OF 0600 PDT ON SEPTEMBER 21.
***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
ELEVATED FIRE WEATHER CONDITIONS PERSIST THROUGH THE
NEXT COUPLE OF DAYS AS DRY AIR PERSISTS WITH BREEZY WINDS DEVELOPING
THROUGH THE NEXT COUPLE OF DAYS. THE STRONGEST WINDS WILL OCCUR TUESDAY
AFTERNOON WITH GUSTS UP 30 MPH POSSIBLE. OVERNIGHT RECOVERIES WILL BE
EXCELLENT WITH VALUES HUMIDITY VALUES UP TO THE MID 90 PERCENT RANGE.
TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....82-87.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 10 MPH BY
10 AM. WINDS SHIFT TO THE WEST BY 4 PM AT
7 TO 12 MPH WITH GUSTS UP TO 15 TO 25 MPH.
RIDGETOP WIND.......LIGHT WINDS BECOMING SOUTHWEST 7 TO 12 MPH BY
10 AM. WINDS SHIFT TO THE WEST BY 4 PM AT
10 TO 15 MPH WITH GUSTS UP TO 20 TO 30 MPH.
MIXING HEIGHT.......3200 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....EAST 5 TO 10 MPH EARLY IN THE MORNING BECOMING
LIGHT, THEN BECOMING WEST 10 TO 15 MPH LATE IN
THE MORNING.
VENTILATION INDEX...LOW (30) INCREASING TO LOW (200) 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............55 54 56 60 67 73 77 80 82 82 83 81
RH..............63 66 65 57 51 44 39 36 35 34 35 39
20 FT WIND DIR..E NE N W SW SW SW SW SW SW W W
20 FT WIND SPD..3 4 4 4 4 4 6 7 7 8 11 13
20 FT WIND GUST. 5 8 10 14 16
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....47-52.
MAX HUMIDITY........88-93 PERCENT.
WIND (20 FT)........WEST WINDS 7 TO 12 MPH, SHIFTING TO THE NORTHWEST
BY MIDNIGHT.
RIDGETOP WIND.......WEST WINDS 10 TO 15 MPH, SHIFTING TO THE NORTHWEST
BY MIDNIGHT.
MIXING HEIGHT.......500 FT AGL IN THE EVENING.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
VENTILATION INDEX...LOW (100) DECREASING TO LOW (40) OVERNIGHT.
TUESDAY
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....72-77.
MIN HUMIDITY........35-40 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 10 MPH, INCREASING TO 10 TO 15 MPH
BY 10 AM WITH GUSTS UP TO 20 TO 30 MPH.
RIDGETOP WIND.......WEST WINDS 7 TO 12 MPH, INCREASING TO 12 TO 17 MPH
BY 10 AM WITH GUSTS UP TO 25 TO 35 MPH.
MIXING HEIGHT.......3300 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....WEST 10 TO 20 MPH INCREASING TO 20 TO 30 MPH
LATE IN THE AFTERNOON.
VENTILATION INDEX...LOW (80) INCREASING TO MODERATE (450) IN THE
AFTERNOON.
FORECASTER...DAY
REQUESTED BY...ADAM LIEBERG
TYPE OF REQUEST...PRESCRIBED
.TAG 2622141.1/PDT
.DELDT 09/21/26
.FORMATTERVERSION 2.0.0
.EMAIL ALIEBERG@COLUMBIALANDTRUST.ORG
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