137
FNUS76 KPDT 050143
FWSPDT
SPOT FORECAST FOR NORTH CAYUSE FIRE...US WFS
NATIONAL WEATHER SERVICE PENDLETON OR
643 PM PDT SAT JUL 4 2026
FORECAST IS BASED ON FORECAST START TIME OF 1900 PDT ON JULY 04.
***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
WIND SPEEDS WILL CONTINUE TO WEAKEN THIS EVENING BECOME MORE
SOUTHWEST AND THEN SOUTH BY ABOUT 2 AM. CURRENT RELATIVE HUMIDITY
AROUND 14% WILL IMPROVE TO ABOUT 50% OVERNIGHT. NO RAIN OR
THUNDERSTORMS ARE FORECAST.
REST OF TONIGHT
SKY/WEATHER.........CLEAR (0-5 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....AROUND 60.
MAX HUMIDITY........49-54 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 10 MPH SHIFTING TO THE
SOUTHWEST OVERNIGHT, THEN BECOMING LIGHT
OVERNIGHT.
RIDGETOP WIND.......WEST WINDS 7 TO 12 MPH SHIFTING TO THE
SOUTHWEST OVERNIGHT, THEN BECOMING LIGHT
OVERNIGHT.
MIXING HEIGHT.......500 FT AGL IN THE EVENING AND OVERNIGHT THEN
600 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....WEST 7 TO 14 MPH SHIFTING TO THE SOUTH AROUND 7
MPH EARLY IN THE MORNING.
VENTILATION INDEX...MODERATE (280) DECREASING TO LOW (30)
OVERNIGHT.
TIME (PDT) 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 6AM
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............81 79 72 69 66 64 63 60 59 59 57 58
RH..............20 23 26 31 36 40 43 45 48 50 53 53
20 FT WIND DIR..W W W W SW SW SW SW S S S SE
20 FT WIND SPD..10 8 7 6 6 5 5 4 4 4 4 4
20 FT WIND GUST.
SUNDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....81-84.
MIN HUMIDITY........15-20 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 8 MPH LATE
IN THE MORNING, THEN SHIFTING TO THE NORTH IN
THE AFTERNOON.
RIDGETOP WIND.......LIGHT WINDS BECOMING NORTHWEST 7 TO 10 MPH LATE
IN THE MORNING, THEN SHIFTING TO THE NORTH IN
THE AFTERNOON.
MIXING HEIGHT.......4500 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 7 MPH SHIFTING TO THE NORTHWEST 6
TO 8 MPH EARLY IN THE MORNING, THEN SHIFTING TO
THE NORTH AROUND 8 MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...LOW (60) INCREASING TO MODERATE (260) IN THE
AFTERNOON.
SUNDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....59-62.
MAX HUMIDITY........33-38 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 8 MPH EARLY IN THE EVENING
SHIFTING TO THE NORTHEAST 5 TO 7 MPH, THEN
SHIFTING TO THE SOUTHEAST LATE IN THE EVENING
BECOMING LIGHT.
RIDGETOP WIND.......NORTH WINDS 7 TO 10 MPH EARLY IN THE EVENING
SHIFTING TO THE NORTHEAST 7 TO 9 MPH, THEN
SHIFTING TO THE SOUTHEAST LATE IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......3600 FT AGL EARLY IN THE EVENING.
TRANSPORT WINDS.....NORTHEAST 6 TO 8 MPH SHIFTING TO THE SOUTHEAST
7 TO 8 MPH LATE IN THE EVENING, THEN SHIFTING
TO THE SOUTH AROUND 6 MPH EARLY IN THE MORNING.
VENTILATION INDEX...LOW (110) DECREASING TO LOW (30) OVERNIGHT.
MONDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING
MOSTLY SUNNY (40-50 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.2 PERCENT.
MAX TEMPERATURE.....84-87.
MIN HUMIDITY........14-19 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 8 MPH LATE
IN THE MORNING.
RIDGETOP WIND.......LIGHT WINDS BECOMING NORTHWEST 7 TO 10 MPH LATE
IN THE MORNING.
MIXING HEIGHT.......5400 FT AGL EARLY IN THE MORNING.
TRANSPORT WINDS.....SOUTH 5 TO 6 MPH SHIFTING TO THE NORTHWEST 6 TO
9 MPH LATE IN THE MORNING.
VENTILATION INDEX...LOW (30) INCREASING TO MODERATE (230) IN THE
AFTERNOON.
FORECASTER...RUSSELL
REQUESTED BY...NORTH CAYUSE IC
TYPE OF REQUEST...WILDFIRE
.TAG 2616785.0/PDT
.DELDT 07/04/26
.FORMATTERVERSION 2.0.0
.EMAIL ORBMC@FIRENET.GOV
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