347
FNUS76 KPDT 090848
FWSPDT
SPOT FORECAST FOR STONE...HIGH DESSERT TEAM 3
NATIONAL WEATHER SERVICE PENDLETON OR
148 AM PDT TUE SEP 9 2025
FORECAST IS BASED ON FORECAST START TIME OF 2000 PDT ON SEPTEMBER 08.
***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 AND WEDNESDAY. STORMS COULD PRODUCE GUSTY
WINDS, SMALL HAIL, AND BRIEF DOWNPOURS. ALTHOUGH LOCALLY WETTING
RAINS ARE POSSIBLE, OVERALL CWRS REMAIN GENERALLY LOW TODAY WITH
THE BEST CHANCES FOR RAINFALL WEDNESDAY. MOISTURE FROM THIS SYSTEM
WILL FOSTER BOTH EXCELLENT RH RECOVERIES OVERNIGHT AND MINIMUM
RHS AROUND 50 PERCENT. LIGHT WINDS WILL CONTINUE EACH MORNING AND
EACH OVERNIGHT, NORTHERLY DURING THE AFTERNOON AND EVENING.
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT) THEN BECOMING
MOSTLY SUNNY (45-55 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS IN THE MORNING. RAIN SHOWERS
LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON.
CWR.................8 PERCENT INCREASING TO 15 PERCENT LATE IN THE
AFTERNOON.
CHANCE OF LIGHTNING.24 PERCENT.
MAX TEMPERATURE.....73-76.
MIN HUMIDITY........42-47 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTH 5 TO 7 MPH LATE IN
THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.
RIDGETOP WIND.......NORTHWEST 3 TO 5 MPH INCREASING TO 6 TO 8 MPH
LATE IN THE AFTERNOON.
MIXING HEIGHT.......5700 FT AGL.
TRANSPORT WINDS.....WEST AROUND 6 MPH SHIFTING TO THE NORTH 6 TO 9
MPH LATE IN THE MORNING.
VENTILATION INDEX...POOR (50) INCREASING TO FAIR (290) IN THE
AFTERNOON.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT). CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS
LATE IN THE EVENING. CHANCE OF RAIN SHOWERS
EARLY IN THE MORNING.
CWR.................15 PERCENT DECREASING TO 0 PERCENT LATE IN THE
EVENING.
CHANCE OF LIGHTNING.24 PERCENT.
MIN TEMPERATURE.....51-54.
MAX HUMIDITY........89-94 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 7 MPH EARLY IN THE EVENING
BECOMING LIGHT. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS IN THE EVENING.
RIDGETOP WIND.......NORTHWEST 6 TO 8 MPH EASING TO 3 TO 5 MPH
OVERNIGHT.
MIXING HEIGHT.......500 FT AGL IN THE EVENING AND OVERNIGHT.
TRANSPORT WINDS.....NORTHWEST 7 TO 9 MPH SHIFTING TO THE WEST
AROUND 5 MPH OVERNIGHT.
VENTILATION INDEX...POOR (100) DECREASING TO POOR (30) OVERNIGHT.
WEDNESDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). RAIN SHOWERS
LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE MORNING, THEN RAIN SHOWERS AND CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
CWR.................0 PERCENT INCREASING TO 75 PERCENT.
CHANCE OF LIGHTNING.39 PERCENT.
MAX TEMPERATURE.....70-73.
MIN HUMIDITY........56-61 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTH 5 TO 7 MPH LATE IN
THE AFTERNOON. 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 3 TO 5 MPH INCREASING TO 8 TO 10 MPH
LATE IN THE AFTERNOON.
MIXING HEIGHT.......5200 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH SHIFTING TO THE WEST
AROUND 12 MPH.
VENTILATION INDEX...POOR (30) INCREASING TO FAIR (310) IN THE
AFTERNOON.
FORECASTER...NWS SEATTLE
REQUESTED BY...CHISTOPH
TYPE OF REQUEST...WILDFIRE
.TAG 2521348.4/PDT
.DELDT 09/08/25
.FORMATTERVERSION 2.0.0
.EMAIL STACY.LAURITSEN@OREGON.GOV,ORJDCC@FIRENET.GOV,MICHALE.J.CEARNS@ODF.OREGON.GOV
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