419
FNUS76 KPDT 061204
FWSPDT
SPOT FORECAST FOR METWUI...USFS
NATIONAL WEATHER SERVICE PENDLETON OR
504 AM PDT MON APR 6 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 PDT ON APRIL 07.
***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 WEATHER SYSTEM PASSING TO THE NORTHEAST WILL BRING
BREEZY CONDITIONS TO CENTRAL OREGON ON TUESDAY. FOR THE BURN SITE,
SOUTHWEST WINDS ARE FORECAST TO BECOME WESTERLY AND INCREASE IN
MAGNITUDE BY 9-11 AM PDT TUESDAY. HOURLY PROBABILITIES OF EXCEEDING
10 MPH WINDS ARE LOW (20 PERCENT OR LESS) PRIOR TO 9 AM, THEN INCREASE
TO 40-60 PERCENT 10 AM THROUGH 4 PM. THE 24-HR PROBABILITY OF
EXPERIENCING SUSTAINED WINDS OF 10 MPH OR GREATER ON TUESDAY IS HIGH
(75 PERCENT). WILL NOTE THAT SIGNIFICANTLY STRONGER WINDS OF 15-25 MPH
WITH HIGHER GUSTS ARE FORECAST ALONG EXPOSED RIDGELINES (ESPECIALLY GREEN
RIDGE) SURROUNDING THE BURN SITE, BUT THOSE STRONGER SUSTAINED WINDS
ARE NOT EXPECTED TO MIX DOWN ALONG THE METOLIUS RIVER.
EYE-LEVEL WINDS FOR AN OPEN PONDEROSA PINE FOREST CAN BE ESTIMATED
AS ROUGHLY 30 PERCENT AS STRONG AS WHAT IS OBSERVED AT THE 20-FT RAWS
WIND LEVEL. THE FORECAST BELOW IS FOR 20-FT WIND.
TUESDAY
SKY/WEATHER.........PARTLY CLOUDY (20-40 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....62-65.
MIN HUMIDITY........28-33 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 4-7 MPH EARLY MORNING, BECOMING
WEST WINDS 8-12 MPH WITH GUSTS OF 15-25 MPH BY
MID-MORNING.
MIXING HEIGHT.......INCREASING TO 4800-5300 FT AGL BY AFTERNOON.
TRANSPORT WINDS.....WEST 10-15 MPH EARLY MORNING, INCREASING TO 20-25 MPH
BY LATE MORNING.
VENTILATION INDEX...INCREASING TO EXCELLENT (1000-1250) BY AFTERNOON.
TIME (PDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM
CHC OF LTNG (%).0 0 0 0 0 0
TEMP............43 48 57 61 62 60
RH..............63 56 41 34 30 31
20 FT WIND......SW 7 W 7 W 11 W 11 W 11 W 8
20 FT WIND GUST.13 14 21 21 18 16
TUESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....32-34.
MAX HUMIDITY........75-80 PERCENT.
WIND (20 FT)........WEST WINDS 5-8 MPH WITH GUSTS OF 10-15
MPH IN THE EVENING BECOMING DRAINAGE
WINDS 1-4 MPH BY 8-9 PM PDT.
MIXING HEIGHT.......DECREASING TO 200-600 FT AGL OVERNIGHT.
TRANSPORT WINDS.....WEST 15-20 MPH EARLY EVENING, BECOMING SOUTH
TO SOUTHWEST AND DECREASING TO 4-8 MPH LATE
EVENING AND OVERNIGHT.
VENTILATION INDEX...DECREASING TO POOR (20-50) OVERNIGHT.
WEDNESDAY
SKY/WEATHER.........PARTLY CLOUDY (20-40 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....65-68.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........DRAINAGE WINDS 1-4 MPH EARLY MORNING, BECOMING
WEST 5-8 MPH LATE MORNING.
MIXING HEIGHT.......INCREASING TO 4500-5000 FT AGL BY AFTERNOON.
TRANSPORT WINDS.....WEST 4-8 MPH IN THE MORNING, INCREASING TO 8-12 MPH
IN THE AFTERNOON.
VENTILATION INDEX...INCREASING TO FAIR (400-480) BY AFTERNOON.
FORECASTER...PLUNKETT
REQUESTED BY...KIEL WOOD
TYPE OF REQUEST...PRESCRIBED
.TAG 2609051.0/PDT
.DELDT 04/06/26
.FORMATTERVERSION 2.0.0
.EMAIL KIEL.WOOD@USDA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page