911
FNUS76 KPDT 291704
FWSPDT
SPOT FORECAST FOR IRRIGATION RX...OR-MHF
NATIONAL WEATHER SERVICE PENDLETON OR
1004 AM PDT WED APR 29 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 PDT ON APRIL 30.
***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
DRY AND WARMING CONDITIONS WILL PERSIST OVER THE
FIRE AREA THROUGH THE PERIOD. DAYTIME RHS WILL BE IN THE LOW TO
MID 20% THURSDAY AND FRIDAY WITH OVERNIGHT RECOVERIES IN THE 40%.
WINDS WILL BE BELOW 10 MPH AND DIURNALLY DRIVEN THROUGH THE DAY
BECOMING DOWN SLOPE/DOWN VALLEY WINDS OVERNIGHT AND INTO THE
MORNING. INVERSION WILL BREAK AROUND 0800 AT 2200 FT AGL
INCREASING TO NEAR 6000 FT AGL BY 1400.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....69-72.
MIN HUMIDITY........24-29 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING EAST 5 TO 8 MPH AFTER
10 AM THEN SHIFTING NORTHEAST 4 TO 6 MPH
AFTER 5 PM.
RIDGETOP WIND.......DOWN SLOPE/DOWN VALLEY WINDS BECOMING EAST
7 TO 10 MPH AFTER 10AM.
MIXING HEIGHT.......6000 FT AGL.
TRANSPORT WINDS.....EAST 8 TO 10 MPH.
VENTILATION INDEX...MODERATE (460) IN THE AFTERNOON.
TIME (PDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............60 62 64 66 68 69 69 69 67 65 62 58
RH..............47 42 39 35 32 31 30 29 31 35 39 42
20 FT WIND DIR..E E E E E E E NE NE NE NE NE
20 FT WIND SPD..4 7 7 7 6 6 6 6 6 6 4 4
20 FT WIND GUST.8 10 10 10 10 10 10 10 10 10 6 6
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (45-55 PERCENT) THEN BECOMING
PARTLY CLOUDY (25-35 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....49-52.
MAX HUMIDITY........47-52 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 4 TO 6 MPH AFTER 5 PM
BECOMING LIGHT OVERNIGHT.
RIDGETOP WIND.......NORTHEAST WINDS 6 TO 8 MPH AFTER 5 PM
BECOMING DOWN SLOPE/DOWN VALLEY OVERNIGHT.
MIXING HEIGHT.......800 FT AGL.
TRANSPORT WINDS.....NORTHEAST 5 TO 8 MPH BECOMING LIGHT.
VENTILATION INDEX...MODERATE (210) DECREASING TO LOW (40)
OVERNIGHT.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS LATE IN THE AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.12 PERCENT.
MAX TEMPERATURE.....75-78.
MIN HUMIDITY........24-29 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING EAST 5 TO 7 MPH AFTER 11 AM,
THEN SHIFTING TO THE NORTHEAST 5 TO 6 MPH AFTER
4 PM.
RIDGETOP WIND.......DOWN SLOPE/DOWN VALLEY WINDS BECOMING EAST 7 TO 9
MPH AFTER 11 AM, THEN SHIFTING TO THE NORTHEAST 7
TO 8 MPH AFTER 4 PM.
MIXING HEIGHT.......6500 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING SOUTHEAST 7 TO 8 MPH LATE
IN THE MORNING, THEN SHIFTING TO THE EAST
AROUND 8 MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...LOW (30) INCREASING TO MODERATE (310) IN THE
AFTERNOON.
FORECASTER...BENNESE
REQUESTED BY...JOHN BITZBERGER
TYPE OF REQUEST...PRESCRIBED
.TAG 2612125.0/PDT
.DELDT 04/29/26
.FORMATTERVERSION 2.0.0
.EMAIL JOAN.MARQUEZ@USDA.GOV,ERICK.CASTANEDAVEYNA@USDA.GOV,LARS.OLSON@USDA.GOV,ANDREW.S.BELLAIRS@USDA.GOV,JOHN.BITZBERGER@USDA.GOV
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