252
FNUS76 KPDT 292309
FWSPDT
SPOT FORECAST FOR WALTER SPRINGS RX...USFS
NATIONAL WEATHER SERVICE PENDLETON OR
409 PM PDT WED APR 29 2026
FORECAST IS BASED ON IGNITION TIME OF 1800 PDT ON APRIL 29.
***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
LIGHT WINDS OUT OF THE SOUTH EARLY THIS EVENING WILL BECOME LIGHT AND VARIABLE
BY 2300. THE LIGHT WINDS EARLY THURSDAY MORNING WILL DEVELOP OUT OF THE SOUTHEAST
AT 10 TO 15 MPH BY NOON.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....40-43.
MAX HUMIDITY........59-64 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 7 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING SOUTHEAST 5 TO 7
MPH OVERNIGHT.
RIDGETOP WIND.......EAST WINDS 8 TO 12 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING SOUTHEAST 5 TO 7
MPH OVERNIGHT.
MIXING HEIGHT.......3900 FT AGL EARLY IN THE EVENING FALLING TO THE SURFACE BY 2100.
TRANSPORT WINDS.....SOUTHEAST 6 TO 8 MPH IN THE EVENING BECOMING
LIGHT, THEN BECOMING SOUTHEAST 5 TO 6 MPH
OVERNIGHT.
VENTILATION INDEX...LOW (110) DECREASING TO LOW (30) OVERNIGHT.
TIME (PDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
CHC OF LTNG (%).0 0 0 0 0 0
TEMP............54 49 45 43 42 41
RH..............44 55 60 62 63 64
20 FT WIND......E 6 SE 4 SE 4 SE 4 SE 5 SE 5
20 FT WIND GUST.11 7 7 6 6 6
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....59-62.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 8 MPH. GUSTS UP TO 15 MPH
LATE IN THE MORNING.
RIDGETOP WIND.......SOUTHEAST WINDS 7 TO 10 MPH. GUSTS UP TO 20 MPH
LATE IN THE MORNING.
MIXING HEIGHT.......INVERSION BREAKS AT 8 AM AND RISING TO 4700 FT AGL BY 1100.
TRANSPORT WINDS.....SOUTHEAST 6 TO 12 MPH.
VENTILATION INDEX...LOW (50) INCREASING TO MODERATE (420) IN THE
AFTERNOON.
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....43-46.
MAX HUMIDITY........53-58 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 7 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING SOUTHWEST 5 TO 7
MPH OVERNIGHT.
RIDGETOP WIND.......SOUTHEAST WINDS 7 TO 10 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING SOUTHWEST 7 TO 10
MPH OVERNIGHT.
MIXING HEIGHT.......3800 FT AGL EARLY IN THE EVENING.
TRANSPORT WINDS.....SOUTHEAST 6 TO 8 MPH.
VENTILATION INDEX...LOW (130) DECREASING TO LOW (30) OVERNIGHT.
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.9 PERCENT.
MAX TEMPERATURE.....62-65.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 7 MPH SHIFTING TO THE NORTHWEST
EARLY IN THE MORNING, THEN SHIFTING TO THE
SOUTHEAST 5 TO 8 MPH LATE IN THE MORNING.
MIXING HEIGHT.......5800 FT AGL LATE IN THE MORNING.
TRANSPORT WINDS.....SOUTH 5 TO 13 MPH.
VENTILATION INDEX...LOW (30) INCREASING TO MODERATE (450) IN THE
AFTERNOON.
FORECASTER...RUSSELL
REQUESTED BY...NICHOLAS STEEL
TYPE OF REQUEST...PRESCRIBED
.TAG 2611886.1/PDT
.DELDT 04/29/26
.FORMATTERVERSION 2.0.0
.EMAIL NICHOLAS.STEEL@USDA.GOV
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