316
FNUS76 KPDT 061006
FWSPDT
SPOT FORECAST FOR SAFR 9&78 RX...USFS
NATIONAL WEATHER SERVICE PENDLETON OR
306 AM PDT MON APR 6 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 PDT ON APRIL 06.
***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
WARM, DRY CONDITIONS ARE FORECAST TODAY, ALBEIT
WITH A VERY LOW (5 PERCENT) CHANCE OF ISOLATED SHOWERS AND
THUNDERSTORMS THIS AFTERNOON AS A WEATHER SYSTEM APPROACHES
FROM THE NORTHWEST. SHOULD ANY STORMS DEVELOP, THEY WILL MOVE
EAST TO EAST-SOUTHEAST AT 15-20 MPH AND BE CAPABLE OF PRODUCING
CLOUD-TO-GROUND LIGHTNING, SMALL HAIL, AND GUSTY OUTFLOW WINDS
OF UP TO 40 MPH. WINDS ARE EXPECTED TO BE DIURNALLY DRIVEN TODAY
AND TUESDAY, GUSTY WEST-NORTHWESTERLY DURING THE AFTERNOON AND
EVENING WITH LIGHTER DRAINAGE/SOUTHWEST WINDS OVERNIGHT.
VENTILATION IS EXPECTED TO BE EXCELLENT BOTH AFTERNOONS AND POOR
OVERNIGHT.
REST OF TODAY
SKY/WEATHER.........PARTLY CLOUDY (20-50 PERCENT). LOW (5 PERCENT)
CHANCE OF SHOWERS AND THUNDER THIS AFTERNOON.
CWR.................1 PERCENT.
CHANCE OF LIGHTNING.5 PERCENT.
MAX TEMPERATURE.....71-74.
MIN HUMIDITY........26-32 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 8-12 MPH WITH
GUSTS OF 15-20 MPH BY MID-AFTERNOON.
MIXING HEIGHT.......INCREASING TO 7500-8000 FT AGL BY AFTERNOON.
TRANSPORT WINDS.....WEST 4-8 MPH IN THE MORNING, INCREASING TO 15-20
MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...POOR (30) INCREASING TO EXCELLENT (1000-1250) IN
THE AFTERNOON.
TIME (PDT) 8 AM 10 AM NOON 2 PM 4 PM 6 PM
CHC OF LTNG (%).0 0 0 0 5 5
TEMP............39 55 66 70 71 66
RH..............80 60 35 29 30 36
20 FT WIND......WSW 2 NE 2 NW 3 NW 8 NW 12 NW 12
20 FT WIND GUST. 12 17 17
TONIGHT
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY (30-60 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.1 PERCENT.
MIN TEMPERATURE.....39-42.
MAX HUMIDITY........65-70 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 8-12 MPH WITH GUSTS OF 15-20 MPH
IN THE EVENING, BECOMING SOUTHWEST/DRAINAGE 1-4 MPH
AROUND MIDNIGHT.
MIXING HEIGHT.......DECREASING TO 200-500 FT AGL OVERNIGHT.
TRANSPORT WINDS.....WEST 12-17 MPH IN THE EVENING, BECOMING SOUTHWEST
6-10 MPH OVERNIGHT.
VENTILATION INDEX...DECREASING TO POOR (20-50) OVERNIGHT.
TUESDAY
SKY/WEATHER.........PARTLY CLOUDY (25-40 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....60-63.
MIN HUMIDITY........27-32 PERCENT.
WIND (20 FT)........DRAINAGE/SOUTHWEST WINDS 1-4 MPH EARLY MORNING, BECOMING
NORTHEAST 2-5 MPH BY MID-MORNING, THEN WEST-NORTHWEST
6-10 MPH WITH GUSTS OF 10-15 MPH LATE MORNING INCREASING
TO 10-15 MPH WITH GUSTS OF 20-30 MPH IN THE AFTERNOON AND
EVENING.
MIXING HEIGHT.......INCREASING TO 5000-5500 FT AGL BY AFTERNOON.
TRANSPORT WINDS.....WEST 10-15 MPH EARLY MORNING, INCREASING TO 20-25 MPH
LATE MORNING AND AFTERNOON.
VENTILATION INDEX...INCREASING TO EXCELLENT (1000-1250) IN THE AFTERNOON.
FORECASTER...PLUNKETT
REQUESTED BY...JEREMY GOTTFRIED
TYPE OF REQUEST...PRESCRIBED
.TAG 2609012.1/PDT
.DELDT 04/06/26
.FORMATTERVERSION 2.0.0
.EMAIL JEREMY.GOTTFRIED@USDA.GOV
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