370
FNUS76 KPDT 210534
FWSPDT
SPOT FORECAST FOR BUTTE_CREEK_072125...ORWSA
NATIONAL WEATHER SERVICE PENDLETON OR
1034 PM PDT SUN JUL 20 2025
FORECAST IS BASED ON FORECAST START TIME OF 0700 PDT ON JULY 21.
***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
WEST TO NORTHWEST WINDS UP TO 10 MPH WILL IMPACT
THE FIRE SITE MONDAY AND TUESDAY, WITH LIGHT DOWNSLOPE WINDS
OVERNIGHT. A WEATHER SYSTEM ARRIVING TO THE AREA WILL BRING A
SLIGHT CHANCE SHOWERS THROUGH MONDAY AFTERNOON, BUT CHANCES OF
WETTING RAIN WILL BE LESS THAN 10%. CLOUDY CONDITIONS WILL RESULT
IN COOLER CONDITIONS, BUT WILL RESULT IN POOR DISPERSION OF
SMOKE DURING THE DAY.
MONDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT) THEN BECOMING
SUNNY (10-20 PERCENT). SLIGHT CHANCE OF RAIN
SHOWERS IN THE MORNING AND EARLY AFTERNOON.
AREAS OF SMOKE THROUGH THE DAY.
CWR.................4 PERCENT.
CHANCE OF LIGHTNING.10 PERCENT.
MAX TEMPERATURE.....74-77.
MIN HUMIDITY........34-39 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......4900 FT AGL.
TRANSPORT WINDS.....WEST 8 TO 14 MPH.
VENTILATION INDEX...POOR (130) INCREASING TO FAIR (450) IN THE
AFTERNOON.
TIME (PDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM
CHC OF LTNG (%).0 0 10 10 10 0
TEMP............54 61 64 70 73 74
RH..............73 62 55 45 40 39
20 FT WIND......W 5 W 7 W 8 W 8 W 10 NW 10
20 FT WIND GUST.6 8 11 11 13 13
MONDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). AREAS OF SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.4 PERCENT.
MIN TEMPERATURE.....51-54.
MAX HUMIDITY........80-85 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 10 MPH BECOMING LIGHT DOWNSLOPE
WINDS.
MIXING HEIGHT.......800 FT AGL.
TRANSPORT WINDS.....WEST 8 TO 14 MPH.
VENTILATION INDEX...FAIR (390) DECREASING TO POOR (90) OVERNIGHT.
TUESDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT). AREAS OF SMOKE IN THE
MORNING AND EARLY AFTERNOON. HAZE EARLY IN THE
MORNING.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.6 PERCENT.
MAX TEMPERATURE.....82-85.
MIN HUMIDITY........27-32 PERCENT.
WIND (20 FT)........LIGHT DOWNSLOPE WINDS BECOMING WEST 4 TO 7 MPH
AROUND 11AM, THEN SHIFTING TO THE NORTHWEST 5
TO 10 MPH AFTER 2PM.
MIXING HEIGHT.......7700 FT AGL.
TRANSPORT WINDS.....WEST 5 TO 8 MPH IN THE MORNING BECOMING LIGHT,
THEN BECOMING NORTHWEST 6 TO 8 MPH LATE IN THE
AFTERNOON.
VENTILATION INDEX...POOR (70) INCREASING TO FAIR (240) IN THE
AFTERNOON.
FORECASTER...LAWHORN
REQUESTED BY...ANTONE MOODY
TYPE OF REQUEST...WILDFIRE
.TAG 2518335.0/PDT
.DELDT 07/20/25
.FORMATTERVERSION 2.0.0
.EMAIL ANTONE.MOODY@CTWSBNR.ORG
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