714
FNUS76 KPDT 042116
FWSPDT
SPOT FORECAST FOR AKAWA BUTTE FIRE...ODF
NATIONAL WEATHER SERVICE PENDLETON OR
216 PM PDT TUE AUG 4 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 PDT ON AUGUST 05.
***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
HOT, DRY CONDITIONS ARE FORECAST THROUGH THURSDAY.
FAIR TO GOOD RH RECOVERY IS ANTICIPATED. DIURNALLY AND TERRAIN-DRIVEN
WINDS ARE FORECAST WEDNESDAY THROUGH THURSDAY MORNING, FOLLOWED BY
A PUSH OF GUSTY NORTHWEST WIND LATER THURSDAY AFTERNOON. MIXING HEIGHTS
WILL DEEPEN THROUGH THURSDAY, LEADING TO CONCERNS FOR HOT, DRY,
AND UNSTABLE CONDITIONS. NOCTURNAL INVERSIONS ARE FORECAST TO BREAK
BY 9-11 AM.
WEDNESDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT). AREAS OF SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....88-91.
MIN HUMIDITY........10-15 PERCENT.
WIND (20 FT)........VARIABLE WINDS 1-3 MPH EARLY MORNING, BECOMING
UPSLOPE AND UPVALLEY 2-4 MPH BY MID-MORNING, THEN
BECOMING NORTH TO NORTHEAST 4-8 MPH WITH GUSTS OF
10-15 MPH IN THE AFTERNOON.
RIDGETOP WIND.......VARIABLE WINDS 1-3 MPH EARLY MORNING, BECOMING
UPSLOPE AND UPVALLEY 2-4 MPH BY MID-MORNING, THEN
BECOMING NORTH TO NORTHEAST 5-9 MPH WITH GUSTS OF
12-17 MPH IN THE AFTERNOON.
MIXING HEIGHT.......INCREASING TO 6500-7000 FT AGL BY AFTERNOON.
TRANSPORT WINDS.....VARIABLE WINDS 1-4 MPH, BECOMING WEST 8-12 MPH
LATE AFTERNOON.
VENTILATION INDEX...LOW (30) INCREASING TO MODERATE (310-340) IN
THE AFTERNOON.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............50 53 59 65 73 77 82 86 89 91 90 91
RH..............51 51 46 32 23 20 18 15 14 13 14 13
20 FT WIND DIR..W W SW E E E E NE NE NE N NW
20 FT WIND SPD..2 2 3 3 3 4 5 5 6 6 7 6
20 FT WIND GUST. 5 4 5 6 8 10 12 13 14 14
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). AREAS OF SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....51-54.
MAX HUMIDITY........45-50 PERCENT.
WIND (20 FT)........NORTH TO NORTHWEST WINDS 4-7 MPH WITH GUSTS OF
10-15 MPH EARLY EVENING, BECOMING DRAINAGE WINDS
2-6 MPH OVERNIGHT.
RIDGETOP WIND.......NORTH TO NORTHWEST WINDS 5-9 MPH WITH GUSTS OF
12-17 MPH EARLY EVENING, BECOMING DRAINAGE WINDS
2-6 MPH OVERNIGHT.
MIXING HEIGHT.......DECREASING TO 300-600 FT AGL OVERNIGHT.
TRANSPORT WINDS.....WEST-NORTHWEST 8-12 MPH EARLY EVENING, BECOMING
WEST 4-8 MPH OVERNIGHT.
VENTILATION INDEX...MODERATE (270-300) DECREASING TO LOW (30)
OVERNIGHT.
THURSDAY
SKY/WEATHER.........SUNNY (0-10 PERCENT). AREAS OF SMOKE IN THE
MORNING, THEN PATCHY SMOKE IN THE AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....93-96.
MIN HUMIDITY........9-14 PERCENT.
WIND (20 FT)........VARIABLE TO SOUTHWEST WINDS 2-6 MPH IN THE MORNING,
BECOMING NORTHWEST 6-10 MPH WITH GUSTS OF 15-20 MPH
LATE AFTERNOON.
RIDGETOP WIND.......VARIABLE TO SOUTHWEST WINDS 3-7 MPH IN THE MORNING,
BECOMING NORTHWEST 7-12 MPH WITH GUSTS OF 15-25 MPH
LATE AFTERNOON.
MIXING HEIGHT.......INCREASING TO 8500-9000 FT AGL BY AFTERNOON.
TRANSPORT WINDS.....WEST TO SOUTHWEST 4-8 MPH IN THE MORNING,
INCREASING TO 10-15 MPH LATE AFTERNOON.
VENTILATION INDEX...LOW (30) INCREASING TO HIGH (580-650) IN THE
AFTERNOON.
FORECASTER...PLUNKETT
REQUESTED BY...DAVE ISACKSON
TYPE OF REQUEST...WILDFIRE
.TAG 2618970.0/PDT
.DELDT 08/04/26
.FORMATTERVERSION 2.0.0
.EMAIL DAVID_ISACKSON@FIRENET.GOV
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