418
FNUS76 KPDT 082116
FWSPDT
SPOT FORECAST FOR MARLEY FIRE...OREGON DEPT. OF FORESTRY
NATIONAL WEATHER SERVICE PENDLETON OR
216 PM PDT MON SEP 8 2025
FORECAST IS BASED ON FORECAST START TIME OF 0000 PDT ON SEPTEMBER 09.
***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
SHOWERS AND ISOLATED THUNDERSTORMS WILL AFFECT THE AREA
THE NEXT FEW DAYS. COOLER TEMPERATURES ARE ALSO IN STORE. WITH THE COOLER
TEMPERATURES AND MOISTURE, HUMIDITIES WILL ALSO BE HIGHER. MIN RH VALUES
WILL BE 45 TO 55 PERCENT TUESDAY AND 60 TO 65 PERCENT ON WEDNESDAY WITH
EXCELLENT OVERNIGHT RECOVERIES.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT). CHANCE (40%) OF RAIN
SHOWERS OVERNIGHT.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.5 PERCENT.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........83-88 PERCENT.
WIND (20 FT)........LIGHT WINDS.
RIDGETOP WIND.......NORTH WIND 5 TO 10 MPH, BECOMING WEST BY MORNING.
MIXING HEIGHT.......390 FT AGL.
TRANSPORT WINDS.....NORTHWEST 6 TO 7 MPH.
VENTILATION INDEX...POOR (30).
TIME (PDT) MID 1AM 2AM 3AM 4AM 5AM 6AM 7AM 8AM 9AM 10A 11A
CHC OF LTNG (%).0 0 0 0 0 10 10 10 10 10 10 20
TEMP............51 50 50 50 49 49 48 49 52 55 59 61
RH..............83 86 86 87 89 89 91 90 83 77 70 62
20 FT WIND DIR..W W SW SW SW SW SW SW NW NW NW N
20 FT WIND SPD..4 4 3 3 3 4 4 4 4 4 4 4
20 FT WIND GUST.6 6 4 4 4 6 6 6 7
TUESDAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). CHANCE (40%) OF RAIN
SHOWERS AND SLIGHT CHANCE (20%) OF THUNDERSTORMS IN
THE MORNING, THEN RAIN SHOWERS LIKELY (60%)AND
SLIGHT CHANCE (20%) OF THUNDERSTORMS IN THE AFTERNOON.
CWR.................0 PERCENT INCREASING TO 43 PERCENT LATE IN THE
MORNING, THEN DECREASING TO 9 PERCENT LATE IN
THE AFTERNOON.
CHANCE OF LIGHTNING.26 PERCENT.
MAX TEMPERATURE.....66-69.
MIN HUMIDITY........49-54 PERCENT.
WIND (20 FT)........LIGHT WINDS. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS LATE IN THE MORNING.
RIDGETOP WIND.......WEST WIND 5 TO 10 MPH BECOMING NORTH IN THE AFTERNOON.
MIXING HEIGHT.......2900 FT AGL.
TRANSPORT WINDS.....WEST AROUND 7 MPH SHIFTING TO THE NORTH 6 TO 8
MPH EARLY IN THE MORNING.
VENTILATION INDEX...POOR (30) INCREASING TO POOR (180) IN THE
AFTERNOON.
TUESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT). CHANCE (50%) OF RAIN
SHOWERS AND SLIGHT (20%) CHANCE OF THUNDERSTORMS
EARLY IN THE EVENING,
CWR.................9 PERCENT INCREASING TO 10 PERCENT EARLY IN THE
MORNING.
CHANCE OF LIGHTNING.21 PERCENT.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........88-93 PERCENT.
WIND (20 FT)........LIGHT WINDS. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS EARLY IN THE EVENING.
RIDGETOP WIND.......NORTHWEST WIND 5 TO 10 MPH.
MIXING HEIGHT.......1100 FT AGL EARLY IN THE EVENING.
TRANSPORT WINDS.....NORTH 5 TO 7 MPH.
VENTILATION INDEX...POOR (30).
WEDNESDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF RAIN
SHOWERS IN THE MORNING, THEN RAIN SHOWERS LIKELY
(70%) LATE IN THE MORNING. SLIGHTLY CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON.
CWR.................10 PERCENT INCREASING TO 79 PERCENT LATE IN THE
MORNING.
CHANCE OF LIGHTNING.28 PERCENT.
MAX TEMPERATURE.....62-65.
MIN HUMIDITY........60-65 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTH 5 TO 7 MPH LATE IN
THE MORNING, THEN BECOMING LIGHT LATE IN THE
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.
RIDGETOP WIND.......NORTH WIND 5 TO 10 MPH.
MIXING HEIGHT.......3200 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....NORTH 6 TO 13 MPH.
VENTILATION INDEX...POOR (30) INCREASING TO FAIR (270) IN THE
AFTERNOON.
FORECASTER...NIERENBERG
REQUESTED BY...ABBY MCBETH
TYPE OF REQUEST...WILDFIRE
.TAG 2521582.0/PDT
.DELDT 09/08/25
.FORMATTERVERSION 2.0.0
.EMAIL ABBY.D.MCBETH@ODF.OREGON.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page