552
FNUS76 KPDT 300122
FWSPDT
SPOT FORECAST FOR BUTTE CREEK FIRE...BLM
NATIONAL WEATHER SERVICE PENDLETON OR
622 PM PDT THU MAY 29 2025
FORECAST IS BASED ON FORECAST START TIME OF 0600 PDT ON MAY 30.
***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
WINDS WILL BE THE PRIMARY CONCERN ACROSS THE FIRE THROUGH
FRIDAY AND INCREASING SATURDAY. WINDS WILL BEGIN LIGHT AND VARIABLE
BEFORE INCREASING TO 5-10 FROM THE NE FRIDAY AFTERNOON. FRIDAY NIGHT
WINDS SHIFT TO THE W 5-7 MPH BEFORE BECOMING LIGHT AND VARIABLE AGAIN
OVERNIGHT. WINDS SATURDAY IS THE REAL CONCERN WITH WINDS INCREASING TO
8-13 MPH FROM THE W THEN SHIFTING AGAIN TO THE NW AND INCREASING TO 13-20
MPH WITH GUSTS TO 29 MPH. DAYTIME RHS BOTH DAYS WILL BE LOW (BELOW 25%)
WITH GOOD (45-50%) OVERNIGHT RECOVERIES.
FRIDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....86-89.
MIN HUMIDITY........17-22 PERCENT.
WIND (20 FT)........LIGHT VARIABLE WINDS BECOMING SUSTAINED NORTHEAST
WINDS 5 TO 10 MPH AROUND 2 PM.
MIXING HEIGHT.......4300 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 5 TO 6 MPH SHIFTING TO THE EAST 6 TO
14 MPH LATE IN THE MORNING.
VENTILATION INDEX...POOR (40) INCREASING TO FAIR (250) IN THE
AFTERNOON.
TIME (PDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
CHC OF LTNG (%).0 0 0 0 0 0
TEMP............51 58 70 78 84 86
RH..............73 56 40 29 23 22
20 FT WIND......SE 4 NE 4 NE 4 N 6 NE 8 NE 8
20 FT WIND GUST. 5 5 8 12 12
FRIDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....59-62.
MAX HUMIDITY........45-50 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 10 MPH SHIFTING TO THE
WEST 5 TO 7 MPH OVERNIGHT, THEN BECOMING LIGHT
EARLY AROUND 8 AM.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTHEAST 8 TO 14 MPH IN THE EVENING AND
OVERNIGHT BECOMING LIGHT.
VENTILATION INDEX...FAIR (240) DECREASING TO POOR (30) OVERNIGHT.
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.1 PERCENT.
MAX TEMPERATURE.....85-88.
MIN HUMIDITY........19-24 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING WEST 8 TO 13 MPH AROUND 10 AM,
THEN SHIFTING TO THE NORTHWEST 13 TO 20 MPH WITH
GUSTS TO AROUND 29 MPH AROUND 2 PM.
MIXING HEIGHT.......6100 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING WEST 13 TO 21 MPH LATE IN
THE MORNING.
VENTILATION INDEX...POOR (30) INCREASING TO EXCELLENT (720) IN THE
AFTERNOON.
FORECASTER...BENNESE
REQUESTED BY...ZACH RICTOR
TYPE OF REQUEST...WILDFIRE
.TAG 2515030.0/PDT
.DELDT 05/29/25
.FORMATTERVERSION 2.0.0
.EMAIL ZTRICTOR@GMAIL.COM,ZRICTOR@BLM.GOV
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