031
FNUS76 KPDT 300000
FWSPDT
SPOT FORECAST FOR NW HQ...USFWS
NATIONAL WEATHER SERVICE PENDLETON OR
500 PM PDT WED APR 29 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 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
WINDS WILL BE OUT OF THE NORTH THURSDAY AND LIGHT (GENERALLY LESS THAN 10 MPH).
AFTERNOON RELATIVE HUMIDITY AS LOW AS 25 PERCENT WILL RECOVER TO AROUND
60 PERCENT THURSDAY NIGHT.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....73-76.
MIN HUMIDITY........27-32 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 7 MPH SHIFTING TO THE EAST
5 TO 8 MPH LATE IN THE MORNING.
RIDGETOP WIND.......NORTHEAST WINDS 7 TO 10 MPH SHIFTING TO THE EAST
7 TO 9 MPH LATE IN THE MORNING.
MIXING HEIGHT.......6700 FT AGL.
TRANSPORT WINDS.....NORTHEAST 7 TO 9 MPH SHIFTING TO THE EAST 7 TO
12 MPH LATE IN THE MORNING.
VENTILATION INDEX...LOW (120) INCREASING TO HIGH (570) IN THE
AFTERNOON.
TIME (PDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............45 49 55 60 65 68 71 72 72 73 72 71
RH..............66 66 60 52 44 40 37 35 33 32 33 34
20 FT WIND DIR..NE NE NE NE E E E E E E E E
20 FT WIND SPD..6 5 5 5 8 8 8 8 8 8 7 7
20 FT WIND GUST.11 12 12 12 14 14 14 13 13 13 12 12
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....45-48.
MAX HUMIDITY........57-62 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 8 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING NORTH 5 TO 7 MPH
LATE IN THE EVENING.
RIDGETOP WIND.......EAST WINDS 7 TO 10 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING NORTH 7 TO 9 MPH
LATE IN THE EVENING.
MIXING HEIGHT.......1100 FT AGL.
TRANSPORT WINDS.....EAST AROUND 7 MPH EARLY IN THE EVENING BECOMING
LIGHT, THEN BECOMING NORTHEAST 5 TO 7 MPH LATE
IN THE EVENING.
VENTILATION INDEX...LOW (150) DECREASING TO LOW (50) OVERNIGHT.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.7 PERCENT.
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 7 MPH EARLY IN THE MORNING
BECOMING LIGHT, THEN BECOMING SOUTHEAST 5 TO 8
MPH LATE IN THE MORNING SHIFTING TO THE SOUTH 5
TO 7 MPH.
RIDGETOP WIND.......NORTH WINDS 7 TO 10 MPH EARLY IN THE MORNING
BECOMING LIGHT, THEN BECOMING SOUTHEAST 5 TO 8
MPH LATE IN THE MORNING SHIFTING TO THE SOUTH 5
TO 7 MPH.
MIXING HEIGHT.......5600 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 7 MPH EARLY IN THE MORNING
BECOMING LIGHT, THEN BECOMING SOUTHEAST 6 TO 7
MPH LATE IN THE MORNING.
VENTILATION INDEX...LOW (50) INCREASING TO MODERATE (300) IN THE
AFTERNOON.
FORECASTER...RUSSELL
REQUESTED BY...THOMAS BOGGS
TYPE OF REQUEST...PRESCRIBED
.TAG 2611776.4/PDT
.DELDT 04/29/26
.FORMATTERVERSION 2.0.0
.EMAIL THOMAS_BOGGS@FWS.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page