448
FNUS76 KPDT 301532
FWSPDT
SPOT FORECAST FOR RP 5000...USFS
NATIONAL WEATHER SERVICE PENDLETON OR
832 AM PDT THU APR 30 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 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
WARM, DRY CONDITIONS TODAY WITH DIURNALLY AND
TERRAIN-DRIVEN WINDS. SLIGHTLY WARMER FRIDAY, WITH A SLIGHT CHANCE
(15 PERCENT) OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON AND
EVENING HOURS. WINDS WILL BE MORE SOUTH TO SOUTHWEST ON FRIDAY,
WITH A SWITCH TO NORTH TO NORTHWEST WINDS LATE AFTERNOON AND
EVENING. ANY SHOWERS OR THUNDERSTORMS THAT DEVELOP WILL BE CAPABLE
OF PRODUCING ERRATIC, GUSTY OUTFLOW WINDS OF 30-40 MPH.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.1 PERCENT AFTERNOON.
MAX TEMPERATURE.....64-67.
MIN HUMIDITY........18-23 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 4-7 MPH SHIFTING TO THE
SOUTHEAST BY EARLY AFTERNOON, THEN SHIFTING TO
THE NORTHEAST 4-8 MPH LATE IN THE
AFTERNOON.
RIDGETOP WIND.......NORTHEAST WINDS 5-8 MPH SHIFTING TO THE
SOUTHEAST BY EARLY AFTERNOON, THEN SHIFTING TO
THE NORTHEAST 6-10 MPH LATE IN THE
AFTERNOON.
MIXING HEIGHT.......7500-8000 FT AGL.
TRANSPORT WINDS.....EAST TO SOUTHEAST 5-9 MPH.
VENTILATION INDEX...LOW (70) INCREASING TO MODERATE (360) IN THE
AFTERNOON.
TIME (PDT) 8 AM 10 AM NOON 2 PM 4 PM 6 PM
CHC OF LTNG (%).0 0 0 1 1 0
TEMP............37 50 58 62 64 62
RH..............67 46 31 26 23 25
20 FT WIND......NE 6 NE 5 E 5 SE 5 SE 5 NE 5
20 FT WIND GUST. 10 10 10 10
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-30 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.1 PERCENT IN THE EVENING.
MIN TEMPERATURE.....36-39.
MAX HUMIDITY........65-70 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 4-8 MPH SHIFTING TO THE
NORTH EARLY IN THE EVENING, THEN BECOMING LIGHT
LATE IN THE EVENING.
RIDGETOP WIND.......NORTHEAST WINDS 6-10 MPH SHIFTING TO THE
NORTH EARLY IN THE EVENING, THEN BECOMING LIGHT
LATE IN THE EVENING.
MIXING HEIGHT.......DECREASING TO 300-600 FT AGL OVERNIGHT.
TRANSPORT WINDS.....EAST 5-8 MPH SHIFTING TO THE SOUTH 6-8
MPH LATE NIGHT.
VENTILATION INDEX...MODERATE (280) DECREASING TO LOW (30)
OVERNIGHT.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT) IN THE AFTERNOON.
SLIGHT CHANCE (15 PERCENT) OF RAIN SHOWERS AND
THUNDERSTORMS LATE AFTERNOON AND EVENING.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.15 PERCENT.
MAX TEMPERATURE.....66-69.
MIN HUMIDITY........19-24 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5-8 MPH EARLY IN
THE MORNING, THEN SHIFTING TO THE WEST TO NORTHWEST
4-8 MPH LATE IN THE AFTERNOON. GUSTS UP TO 15 MPH
DURING THE DAY. GUSTY AND ERRATIC WINDS EXPECTED NEAR
ANY SHOWERS OR THUNDERSTORMS LATE IN THE AFTERNOON.
RIDGETOP WIND.......LIGHT WINDS BECOMING SOUTH 8-12 MPH EARLY IN
THE MORNING, THEN SHIFTING TO THE WEST TO NORTHWEST
8-12 MPH LATE IN THE AFTERNOON. GUSTS UP TO 20 MPH
DURING THE DAY. GUSTY AND ERRATIC WINDS EXPECTED NEAR
ANY SHOWERS OR THUNDERSTORMS LATE IN THE AFTERNOON.
MIXING HEIGHT.......INCREASING TO 8500-9000 FT AGL BY AFTERNOON.
TRANSPORT WINDS.....SOUTH 8-14 MPH SHIFTING TO THE WEST 6-9 MPH LATE
AFTERNOON.
VENTILATION INDEX...LOW (40) INCREASING TO VERY HIGH (860) IN THE
AFTERNOON.
FORECASTER...PLUNKETT
REQUESTED BY...PATRICK ODELL
TYPE OF REQUEST...PRESCRIBED
.TAG 2612114.2/PDT
.DELDT 04/30/26
.FORMATTERVERSION 2.0.0
.EMAIL MAX.LEIDENFROST@USDA.GOV,PATRICK.ODELL@USDA.GOV
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