339
FNUS76 KPDT 041812
FWSPDT
SPOT FORECAST FOR VESSY HFR...YAKAMA AGENCY
NATIONAL WEATHER SERVICE PENDLETON OR
1112 AM PDT SUN OCT 4 2026
FORECAST IS BASED ON IGNITION TIME OF 1200 PDT ON OCTOBER 05.
***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 TRANSPORT WIND
MULTIPLIED BY THE MIXING HEIGHT IN 100'S OF FT.
CATEGORIES ARE A GENERALIZED INDICATOR ONLY:
LOW (< 200), MODERATE (200-500), HIGH (500-700),
AND VERY HIGH (> 700). ***
IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST, PLEASE
CONTACT OUR OFFICE AT (541) 276-8134.
DISCUSSION
WESTERLY WINDS WILL PREVAIL DURING THE DAY, WITH
A FEW GUSTS UP TO 15 MPH POSSIBLE MONDAY AFTERNOON. TOMORROW
EVENING WINDS WILL SHIFT TO THE EAST, THEN BECOME LIGHT
OVERNIGHT. AFTERNOON RHS WILL BE IN THE MID TEENS TOMORROW AND
UPPER TEENS TUESDAY. LOW LEVEL INVERSION WILL DEVELOP BEFORE
7PM MONDAY EVENING, THEN LIFT AFTER 10AM TUESDAY MORNING.
MONDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT) THEN BECOMING PARTLY
SUNNY (60-70 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....80-83.
MIN HUMIDITY........15-20 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 8 MPH.
MIXING HEIGHT.......3700 FT AGL.
TRANSPORT WINDS.....WEST 6 TO 8 MPH.
VENTILATION INDEX...LOW (150-190).
TIME (PDT) NOON 2 PM 4 PM 6 PM 8 PM 10 PM
TEMP............74 78 78 71 58 52
RH..............25 20 22 34 53 64
20 FT WIND......W 5 W 6 W 6 W 5 E 4 E 4
20 FT WIND GUST. 11 11 10
MONDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING
PARTLY CLOUDY (25-35 PERCENT).
CWR.................0 PERCENT.
MIN TEMPERATURE.....44-47.
MAX HUMIDITY........64-69 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 8 MPH SHIFTING TO THE EAST
3 TO 6 MPH AROUND 7PM, THEN BECOMING LIGHT
WINDS AFTER 1AM.
MIXING HEIGHT.......1400 FT AGL EARLY IN THE EVENING THEN 500 FT
AGL LATE IN THE EVENING.
TRANSPORT WINDS.....WEST 5 TO 7 MPH.
VENTILATION INDEX...LOW (40-50) DECREASING TO LOW (30) OVERNIGHT.
TUESDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....76-79.
MIN HUMIDITY........18-23 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 3 TO 6 MPH
AROUND 12PM.
MIXING HEIGHT.......500 FT AGL EARLY IN THE MORNING THEN 3400 FT
AGL LATE IN THE MORNING.
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH EARLY IN THE MORNING
BECOMING LIGHT, THEN BECOMING WEST AROUND 5 MPH
LATE IN THE MORNING.
VENTILATION INDEX...LOW (30) INCREASING TO LOW (100) IN THE
AFTERNOON.
FORECASTER...LAWHORN
REQUESTED BY...JAMES DELAROSA
TYPE OF REQUEST...PRESCRIBED
.TAG 2622668.0/PDT
.DELDT 10/04/26
.FORMATTERVERSION 2.0.0
.EMAIL JAMES_DELAROSA@YAKAMA.COM
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