164
FNUS76 KPDT 240334
FWSPDT
SPOT FORECAST FOR COLD CANAL 506...USFS WALLOWA_WHITMAN NF
NATIONAL WEATHER SERVICE PENDLETON OR
834 PM PDT TUE APR 23 2024
FORECAST IS BASED ON IGNITION TIME OF 0800 PDT ON APRIL 24.
***THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS***
***WINDS ARE 20 FOOT 10-MINUTE AVERAGES***
***CWR-CHANCE OF WETTING RAIN 0.10 OR GREATER***
IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST, PLEASE
CONTACT OUR OFFICE AT (541) 276-8134.
DISCUSSION
TERRAIN DRIVEN WINDS AND FAIR WEATHER WILL GIVE WAY TO
LIGHT BREEZES AND LOW CHANCES FOR PRECIPITATION (LESS THAN 20%)
TOMORROW, INCLUDING POSSIBLE THUNDERSTORMS (15%). THIS IS
ASSOCIATED WITH A WEAK COLD FRONT CROSSING THE AREA IN THE
AFTERNOON. OCCASIONAL GUSTS REACHING 15 TO 20 MPH ARE ANTICIPATED
IN THE LATE AFTERNOON.
A SECOND WEATHER SYSTEM WILL FOLLOW PROMPTING A COOLING TREND AND
UNSETTLED CONDITIONS THURSDAY AND FRIDAY. LOW CHANCES FOR RAIN IN
THE EARLY AFTERNOON THURSDAY WILL BE FOLLOWED BY HIGH CHANCES
AFTER 5 PM THURSDAY PERSISTING THROUGH FRIDAY. HIGH POTENTIAL
(70-80%) FOR AN QUARTER INCH OF RAIN OR MORE OVER THE 24-HR
THURSDAY NIGHT TO FRIDAY TIME PERIOD.
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS AND THUNDERSTORMS MID TO LATE
AFTERNOON.
CWR.................5 PERCENT.
LAL.................2.
MAX TEMPERATURE.....56-59.
MIN HUMIDITY........35-43 PERCENT.
WIND (20 FT)........TERRAIN DRIVEN WINDS 3 TO 5 MPH BECOMING NORTH
WINDS 7 TO 11 MPH WITH GUSTS 15-20 MPH LATE
AFTERNOON.
RIDGETOP WIND.......NORTH WINDS AROUND 5 MPH BECOMING 10 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......4300 FT AGL.
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
TIME (PDT) 8 AM 10 AM NOON 2 PM 4 PM 6 PM
TEMP............45 51 56 56 55 50
RH..............62 53 48 42 45 55
20 FT WIND......N 6 N 6 N 7 NW 8 NW 8 NW 11
20 FT WIND GUST. 10 12 12 18
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT) THEN BECOMING
PARTLY CLOUDY (35-45 PERCENT).
CWR.................0 PERCENT.
LAL.................1.
MIN TEMPERATURE.....33-36.
MAX HUMIDITY........75-80 PERCENT.
WIND (20 FT)........NORTH WINDS 7 TO 11 MPH WITH GUSTS 15-20 MPH
BECOMING NORTHWEST WINDS OVERNIGHT 5 TO 8 MPH.
RIDGETOP WIND.......NORTHWEST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 7 TO 10 MPH.
HAINES INDEX........2 TO 3 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT) THEN BECOMING
MOSTLY CLOUDY (80-90 PERCENT) IN THE
AFTERNOON. SLIGHT CHANCE OF RAIN SHOWERS LATE
IN THE MORNING. RAIN SHOWERS LATE IN THE
AFTERNOON.
CWR.................5 PERCENT INCREASING TO 45 PERCENT LATE IN THE
AFTERNOON.
LAL.................1.
MAX TEMPERATURE.....45-48.
MIN HUMIDITY........55-60 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 8 MPH.
RIDGETOP WIND.......NORTH NORTHWEST WINDS 5 TO 10 MPH
MIXING HEIGHT.......3400 FT AGL.
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
FORECASTER...TOWNSEND
REQUESTED BY...GABRIEL HALE
TYPE OF REQUEST...PRESCRIBED
.TAG 2411872.1/PDT
.DELDT 04/23/24
.FORMATTERVERSION 2.0.0
.EMAIL JESSE.BOHNSACK@USDA.GOV,GABRIEL.HALE@USDA.GOV,MARK.MOELLER@USDA.GOV,TODD.PEDERSON@USDA.GOV,JEFFREY.BRINK@USDA.GOV
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