128
FNUS76 KPDT 032142
FWSPDT
SPOT FORECAST FOR GRASSHOPPER FIRE...WESTERN WASHINGTON TEAM 3
NATIONAL WEATHER SERVICE PENDLETON OR
242 PM PDT SAT OCT 3 2026
FORECAST IS BASED ON FORECAST START TIME OF 1500 PDT ON OCTOBER 03.
***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
AREA OF HIGH PRESSURE WILL CONTINUE TO PROMOTE WARM
TEMPERATURES WITH LIGHT AND VARIABLE WINDS. DRY AIR LINGERS IN PLACE
WITH AFTERNOON RH'S IN THE LOW TO UPPER 20S WITH TEMPS IN THE LOWER
80S. OTHERWISE, OVERNIGHT RECOVERIES WILL BE FAIR TO GOOD WITH RHS
AS HIGH AS IN THE MID-60S.
REST OF TODAY
SKY/WEATHER.........SUNNY (0-5 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....77-82.
MIN HUMIDITY........27-32 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 3 TO 8 MPH.
RIDGETOP WIND.......NORTHEAST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......2800 FT AGL.
TRANSPORT WINDS.....EAST 5 TO 10 MPH.
VENTILATION INDEX...LOW (160-190).
TIME (PDT) 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............77 78 76 74 69 64 61 60 60 59 58 58
RH..............35 34 34 38 43 47 49 51 51 50 52 53
20 FT WIND DIR..NE NE NE NE NE N N N N W SW SW
20 FT WIND SPD..5 5 4 3 3 2 2 2 2 2 2 2
20 FT WIND GUST.10 8 8 7 5
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....48-53.
MAX HUMIDITY........60-65 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......LIGHT WINDS.
MIXING HEIGHT.......1400 FT AGL EARLY IN THE EVENING THEN 500 FT
AGL LATE IN THE EVENING.
TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH SHIFTING TO THE SOUTHWEST
5 TO 10 MPH OVERNIGHT.
VENTILATION INDEX...LOW (50).
SUNDAY
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....82-87.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......LIGHT WINDS.
MIXING HEIGHT.......2400 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH SHIFTING TO THE NORTH 5 TO 10
MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...LOW (50).
FORECASTER...DAY
REQUESTED BY...MATT KINNEE
TYPE OF REQUEST...WILDFIRE
.TAG 2622926.1/PDT
.DELDT 10/03/26
.FORMATTERVERSION 2.0.0
.EMAIL MATT_KINNEE@FIRENET.GOV,2026.GRASSHOPPER.SITUATION@FIRENET.GOV
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