112
FNUS76 KPDT 091100
FWSPDT
SPOT FORECAST FOR FLAT...ODF
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT TUE SEP 9 2025
FORECAST IS BASED ON FORECAST START TIME OF 0700 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.
A SLOWLY APPROACHING WEATHER SYSTEM WILL BRING
ANOTHER ROUND OF AFTERNOON AND EARLY EVENING SHOWERS AND
THUNDERSTORMS TODAY. STORMS COULD PRODUCE GUSTY WINDS, SMALL
HAIL, AND BRIEF DOWNPOURS. ALTHOUGH LOCALLY WETTING RAINS ARE
POSSIBLE, OVERALL CWRS REMAIN GENERALLY LOW TODAY BUT SEE A
SIGNIFICANT INCREASE WEDNESDAY AFTERNOON. MOISTURE FROM THIS
SYSTEM WILL FOSTER BOTH GOOD RH RECOVERIES OVERNIGHT AND MINIMUM
RHS TODAY ABOVE 50 PERCENT. LIGHT WINDS WILL CONTINUE THIS MORNING
AND AGAIN OVERNIGHT, NORTHERLY DURING THE AFTERNOON AND EVENING,
NORTHWESTERLY WEDNESDAY.
TODAY
SKY/WEATHER.........CLOUDY (90-100 PERCENT) THEN BECOMING PARTLY
SUNNY (45-55 PERCENT). RAIN SHOWERS LIKELY IN
THE MORNING. CHANCE OF THUNDERSTORMS THROUGH
THE DAY. RAIN SHOWERS IN THE AFTERNOON.
CWR.................3 PERCENT INCREASING TO 37 PERCENT LATE IN THE
MORNING.
CHANCE OF LIGHTNING.34 PERCENT.
MAX TEMPERATURE.....70-73.
MIN HUMIDITY........53-58 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 8 MPH LATE
IN THE MORNING. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS LATE IN THE
MORNING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS LATE IN THE AFTERNOON.
RIDGETOP WIND.......NORTHWEST AROUND 5 MPH, BECOMING NORTHERLY IN
THE AFTERNOON.
MIXING HEIGHT.......5300 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING NORTH 6 TO 7 MPH LATE IN
THE MORNING, THEN SHIFTING TO THE WEST AROUND 9
MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...POOR (30) INCREASING TO FAIR (250) IN THE
AFTERNOON.
TIME (PDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM
CHC OF LTNG (%).10 10 10 10 30 30 30 30 30 30 20 20
TEMP............50 52 56 61 64 67 68 69 70 68 68 66
RH..............93 92 83 75 66 61 59 56 56 58 61 68
20 FT WIND DIR..W W W W N N N N N N NW NW
20 FT WIND SPD..4 4 4 4 5 5 5 7 7 7 6 6
20 FT WIND GUST. 5 5 5 8 8 8 11 11 11 11 11
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT). RAIN SHOWERS
LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS EARLY
IN THE EVENING, THEN SLIGHT CHANCE OF RAIN
SHOWERS EARLY IN THE EVENING.
CWR.................37 PERCENT DECREASING TO 0 PERCENT LATE IN THE
EVENING.
CHANCE OF LIGHTNING.17 PERCENT.
MIN TEMPERATURE.....50-53.
MAX HUMIDITY........87-92 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 7 MPH EARLY IN THE EVENING
BECOMING LIGHT. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS EARLY IN THE
EVENING.
RIDGETOP WIND.......NORTHEAST 6 TO 8 MPH EARLY IN THE EVENING,
BECOMING NORTHWEST AROUND 5 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST 5 TO 9 MPH BECOMING LIGHT.
VENTILATION INDEX...POOR (120) DECREASING TO POOR (30) OVERNIGHT.
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). RAIN SHOWERS
LIKELY LATE IN THE MORNING. SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON. CHANCE OF
RAIN SHOWERS LATE IN THE AFTERNOON.
CWR.................0 PERCENT INCREASING TO 53 PERCENT LATE IN THE
MORNING.
CHANCE OF LIGHTNING.24 PERCENT.
MAX TEMPERATURE.....70-73.
MIN HUMIDITY........56-61 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTH 5 TO 8 MPH LATE IN
THE MORNING. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.
RIDGETOP WIND.......NORTHWEST AROUND 5 MPH, INCREASING TO 8 TO 10
MPH IN THE AFTERNOON.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING NORTH 5 TO 10 MPH LATE IN
THE MORNING, THEN SHIFTING TO THE WEST AROUND
12 MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...POOR (30) INCREASING TO FAIR (270) IN THE
AFTERNOON.
FORECASTER...NWS SEATTLE
REQUESTED BY...NW
TYPE OF REQUEST...WILDFIRE
.TAG 2521332.4/PDT
.DELDT 09/09/25
.FORMATTERVERSION 2.0.0
.EMAIL KIMBERLY.D.JOHNSON@ODF.OREGON.GOV,ORCOC@FIRENET.GOV
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