097
FNUS76 KPDT 021443
FWSPDT
SPOT FORECAST FOR HIGHWAY 240 TUMBLEWEED RX...USFWS
NATIONAL WEATHER SERVICE PENDLETON OR
643 AM PST MON FEB 2 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 PST ON FEBRUARY 02.
***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 WEAK WARM FRONT WILL LIFT ACROSS THE REGION TODAY,
PROVIDING A SLIGHT CHANCE (20 PERCENT) OF LIGHT RAIN. WHILE WINDS
ALONG HIGHWAY 240 ARE EXPECTED TO BE MOSTLY LIGHT AND VARIABLE,
RIDGETOP WINDS ALONG THE RATTLESNAKE HILLS TO THE SOUTHWEST OF THE SITE
WILL BE SOUTH TO SOUTHWEST WITH PERIODIC GUSTS. TONIGHT THROUGH TUESDAY,
A RIDGE OF HIGH PRESSURE WILL BUILD OVER THE PACIFIC NORTHWEST.
DRY CONDITIONS, ALBEIT WITH PATCHY FOG, ARE FORECAST TUESDAY. NORTHWEST
WINDS ARE EXPECTED TUESDAY.
REST OF TODAY
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). SLIGHT CHANCE
(20 PERCENT) OF LIGHT RAIN IN THE MORNING.
CWR.................2 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....47-50.
MIN HUMIDITY........70-75 PERCENT.
WIND (20 FT)........VARIABLE WINDS 2-5 MPH.
RIDGETOP WIND.......SOUTH TO SOUTHWEST 5-10 MPH.
MIXING HEIGHT.......700-1000 FT AGL.
TRANSPORT WINDS.....SOUTH TO SOUTHWEST 4-8 MPH.
VENTILATION INDEX...POOR (30-80).
TIME (PST) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM
CHC OF LTNG (%).0 0 0 0 0 0
TEMP............36 39 43 45 48 47
RH..............88 87 82 77 71 74
20 FT WIND......VRB 3 VRB 3 VRB 4 VRB 4 VRB 4 VRB 4
20 FT WIND GUST.
TONIGHT
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY (40-80 PERCENT). PATCHY
FOG OVERNIGHT.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....34-37.
MAX HUMIDITY........95-100 PERCENT.
WIND (20 FT)........NORTHWEST 3-6 MPH.
RIDGETOP WIND.......NORTHWEST 3-7 MPH.
MIXING HEIGHT.......NEAR SURFACE.
TRANSPORT WINDS.....NORTHWEST 4-7 MPH OVERNIGHT.
VENTILATION INDEX...POOR (10-30).
TUESDAY
SKY/WEATHER.........MOSTLY CLOUDY (60-75 PERCENT). PATCHY FOG IN THE
MORNING.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....49-52.
MIN HUMIDITY........65-70 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 4-8 MPH.
RIDGETOP WIND.......NORTHWEST WINDS 8-12 MPH.
MIXING HEIGHT.......INCREASING TO 1500-1800 FT AGL EARLY AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 6-9 MPH.
VENTILATION INDEX...INCREASING TO POOR (90-160) IN THE AFTERNOON.
FORECASTER...PLUNKETT
REQUESTED BY...THOMAS BOGGS
TYPE OF REQUEST...PRESCRIBED
.TAG 2601506.0/PDT
.DELDT 02/02/26
.FORMATTERVERSION 2.0.0
.EMAIL THOMAS_BOGGS@FWS.GOV
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