233
FNUS76 KPDT 090224
FWSPDT
SPOT FORECAST FOR STONE...HIGH DESSERT TEAM 3
NATIONAL WEATHER SERVICE PENDLETON OR
724 PM PDT MON SEP 8 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
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS WILL
TAPER OFF TONIGHT. COOLER AND CLOUDY CONDITIONS CONTINUE THROUGH
TONIGHT. ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS ARE EXPECTED
TUESDAY AFTERNOON AND EARLY EVENING. GUSTY WINDS, SMALL HAIL, AND
BRIEF DOWNPOURS WILL BE THE MAIN THREATS. LOCALLY WETTING RAINS
ARE POSSIBLE. WITH CLOUDS AND MOISTURE AROUND, EXPECT GOOD RH
RECOVERIES OVERNIGHT, WITH MINIMUM RHS DURING THE DAY IN THE 40 TO
50 PERCENT RANGE ON TUESDAY. SURFACE WINDS WILL BE FROM THE
WEST/NORTHWEST, WITH SOUTHERLY FLOW ALOFT.
REST OF TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING
MOSTLY CLOUDY (55-65 PERCENT). CHANCE FOR SHOWERS
AND ISOLATED THUNDERSTORMS IN THE EARLY EVENING.
CWR.................4 PERCENT.
CHANCE OF LIGHTNING.11 PERCENT.
MIN TEMPERATURE.....51-54.
MAX HUMIDITY........85-90 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 7 MPH EARLY IN THE EVENING
BECOMING LIGHT.
RIDGETOP WIND.......SOUTH AROUND 10 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST 5 TO 14 MPH.
VENTILATION INDEX...POOR (140) DECREASING TO POOR (30) OVERNIGHT.
TIME (PDT) 8 PM 10 PM MIDNGT 2 AM 4 AM 6 AM
CHC OF LTNG (%).10 10 0 0 0 10
TEMP............67 62 57 56 54 51
RH..............55 66 75 78 82 90
20 FT WIND......W 5 W 5 W 5 SW 4 SW 4 SW 4
20 FT WIND GUST.7 7 7 5 5
TUESDAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). CHANCES OF SHOWERS
THROUGHOUT THE DAY, WITH THUNDERSTORMS POSSIBLE
IN THE AFTERNOON.
CWR.................8 PERCENT INCREASING TO 25 PERCENT LATE IN THE
AFTERNOON.
CHANCE OF LIGHTNING.25 PERCENT.
MAX TEMPERATURE.....72-75.
MIN HUMIDITY........40-50 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 7 MPH
LATE IN THE AFTERNOON. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS.
RIDGETOP WIND.......SOUTH AROUND 10 MPH.
MIXING HEIGHT.......5200 FT AGL.
TRANSPORT WINDS.....NORTHWEST 5 TO 7 MPH SHIFTING TO THE NORTH
AROUND 8 MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...POOR (50) INCREASING TO FAIR (230) IN THE AFTERNOON.
TUESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (50-70 PERCENT). SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING. CHANCE OF RAIN
SHOWERS THROUGH THE NIGHT.
CWR.................25 PERCENT DECREASING TO 4 PERCENT LATE IN THE
EVENING.
CHANCE OF LIGHTNING.19 PERCENT.
MIN TEMPERATURE.....51-54.
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.
RIDGETOP WIND.......SOUTH AROUND 5 MPH.
MIXING HEIGHT.......900 FT AGL IN THE EVENING THEN 500 FT AGL
OVERNIGHT.
TRANSPORT WINDS.....NORTH 5 TO 8 MPH SHIFTING TO THE NORTHWEST
AROUND 5 MPH OVERNIGHT.
VENTILATION INDEX...POOR (90) DECREASING TO POOR (30) OVERNIGHT.
WEDNESDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING. RAIN SHOWERS
LIKELY THROUGH THE DAY. CHANCE OF THUNDERSTORMS
IN THE AFTERNOON.
CWR.................4 PERCENT INCREASING TO 71 PERCENT LATE IN THE
MORNING.
CHANCE OF LIGHTNING.25 PERCENT.
MAX TEMPERATURE.....AROUND 70.
MIN HUMIDITY........61-66 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 7 MPH.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS LATE IN THE MORNING. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE
IN THE AFTERNOON.
RIDGETOP WIND.......SOUTH 5 TO 10 MPH.
MIXING HEIGHT.......3300 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....NORTHWEST 5 TO 6 MPH SHIFTING TO THE NORTH 8 TO
9 MPH LATE IN THE MORNING.
VENTILATION INDEX...POOR (30) INCREASING TO FAIR (270) 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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