907
FNUS76 KPDT 071225
FWSPDT
SPOT FORECAST FOR NORTH WENAS RX...WA DNR
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT TUE OCT 7 2025
FORECAST IS BASED ON IGNITION TIME OF 0700 PDT ON OCTOBER 07.
***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 THE
TRANSPORT WIND MULTIPLIED BY THE MIXING
HEIGHT IN 100'S OF FEET. INDEX CATEGORIES
ARE A GENERALIZED INDICATOR ONLY.***
IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST, PLEASE
CONTACT OUR OFFICE AT (541) 276-8134.
DISCUSSION
A RIDGE OF HIGH PRESSURE WILL KEEP MOSTLY CLEAR,
DRY CONDITIONS OVER THE BURN SITE TODAY. LOW DAYTIME RH IS EXPECTED
TO BE FOLLOWED BY MODERATE OVERNIGHT RH RECOVERY TONIGHT. WINDS WILL
BE DIURNALLY AND TERRAIN-DRIVEN, AND MOSTLY LIGHT, ALBEIT WITH
PERIODIC AFTERNOON GUSTS TODAY. AN APPROACHING OFFSHORE
LOW-PRESSURE SYSTEM WILL INDUCE WESTERLY WINDS ACROSS THE REGION
WEDNESDAY, AND A CHANCE (33 PERCENT) OF RAIN SHOWERS IS FORECAST
BY WEDNESDAY NIGHT.
REST OF TODAY
SKY/WEATHER.........SUNNY (5-15 PERCENT). HAZE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....63-66.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........DRAINAGE WINDS 1-3 MPH EARLY MORNING, BECOMING
UPSLOPE THEN UPVALLEY 3-6 MPH WITH PERIODIC GUSTS
UP TO 12 MPH.
RIDGETOP WIND.......DRAINAGE WINDS 1-3 MPH EARLY MORNING, BECOMING
UPSLOPE THEN UPVALLEY 4-7 MPH WITH PERIODIC GUSTS
UP TO 15 MPH.
MIXING HEIGHT.......INCREASING TO 2000-2300 FT AGL BY LATE MORNING.
TRANSPORT WINDS.....SOUTH 6-9 MPH.
VENTILATION INDEX...POOR (20) INCREASING TO POOR (170) IN THE
AFTERNOON.
TIME (PDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM
CHC OF LTNG (%).0 0 0 0 0 0
TEMP............45 52 58 62 63 62
RH..............51 40 33 29 27 30
20 FT WIND......SW 2 S 3 SE 5 SE 5 S 5 S 4
20 FT WIND GUST. 10 10 10 10
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT). HAZE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....42-45.
MAX HUMIDITY........58-63 PERCENT.
WIND (20 FT)........DRAINAGE WINDS 2-5 MPH.
RIDGETOP WIND.......DRAINAGE WINDS 2-5 MPH.
MIXING HEIGHT.......DECREASING TO NEAR SURFACE OVERNIGHT.
TRANSPORT WINDS.....SOUTH TO SOUTHWEST 5-7 MPH EARLY EVENING, SHIFTING
TO THE WEST 5-9 LATE EVENING.
VENTILATION INDEX...POOR (20).
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT). HAZE IN THE MORNING.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....59-62.
MIN HUMIDITY........33-38 PERCENT.
WIND (20 FT)........DRAINAGE WINDS 2-5 MPH EARLY MORNING, BECOMING
NORTHWEST 3-7 MPH WITH PERIODIC GUSTS UP TO 12 MPH
BY LATE MORNING.
RIDGETOP WIND.......DRAINAGE WINDS 2-6 MPH EARLY MORNING, BECOMING
NORTHWEST 4-7 MPH WITH PERIODIC GUSTS UP TO 15 MPH
BY LATE MORNING.
MIXING HEIGHT.......INCREASING TO 3800-4300 FT AGL BY LATE MORNING.
TRANSPORT WINDS.....WEST 6-10 MPH.
VENTILATION INDEX...POOR (20) INCREASING TO FAIR (285) IN THE
AFTERNOON.
FORECASTER...PLUNKETT
REQUESTED BY...JASON HOERNER
TYPE OF REQUEST...PRESCRIBED
.TAG 2523007.1/PDT
.DELDT 10/07/25
.FORMATTERVERSION 2.0.0
.EMAIL JASON.HOERNER@DNR.WA.GOV
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