571
FNUS76 KPDT 160938
FWSPDT
SPOT FORECAST FOR NORTH CAYUSE...WFS
NATIONAL WEATHER SERVICE PENDLETON OR
238 AM PDT THU JUL 16 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 PDT ON JULY 16.
***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.
..HEAT ADVISORY IN EFFECT UNTIL 9 PM PDT THIS EVENING
DISCUSSION
THERE WILL BE A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS THROUGH THE AFTERNOON HOURS. OTHERWISE EXPECT HOT
TEMPERATURES TODAY AND A BIT COOLER ON FRIDAY.
MIN RH VALUES WILL BE AROUND 30 PERCENT TODAY AND AROUND 20 PERCENT
ON FRIDAY. WITH MODERATE OVERNIGHT RECOVERIES AROUND 45 TO 50 PERCENT.
TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT). SLIGHT CHANCE (20%) OF
SHOWERS AND THUNDERSTORMS.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.15 PERCENT.
MAX TEMPERATURE.....85-92.
MIN HUMIDITY........29-34 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 8 MPH IN
THE LATE MORNING AND AFTERNOON. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE
IN THE MORNING.
RIDGETOP WIND.......AST-SOUTHEAST WIND 5 TO 10 MPH BECOMING SOUTH
IN THE EARLY AFTERNOON THEN BECOMING WEST IN THE
LATE AFTERNOON.
MIXING HEIGHT.......4000 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING NORTHEAST AROUND 5 MPH
EARLY IN THE MORNING, THEN SHIFTING TO THE
SOUTH AROUND 8 MPH LATE IN THE MORNING SHIFTING
TO THE NORTHWEST 8 TO 15 MPH LATE IN THE
AFTERNOON.
VENTILATION INDEX...LOW (30) INCREASING TO LOW (110-140) IN THE
AFTERNOON.
TIME (PDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
CHC OF LTNG (%).10 0 0 20 20 20
TEMP............69 71 76 81 85 87
RH..............46 47 43 37 35 34
20 FT WIND......S 3 W 4 NW 6 NW 7 NW 8 NW 8
20 FT WIND GUST.5 5 10 12 11
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.5 PERCENT.
MIN TEMPERATURE.....61-64.
MAX HUMIDITY........46-51 PERCENT.
WIND (20 FT)........WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 20
MPH SHIFTING TO THE SOUTHWEST 5 TO 10 MPH IN
THE LATE EVENING AND OVERNIGHT, THEN BECOMING
LIGHT OVERNIGHT.
RIDGETOP WIND.......WEST WIND 5 TO 10 MPH INCREASING TO 10 TO 15 MPH
WITH GUSTS TO 20 MPH, BEFORE DECREASING TO
10 MPH AROUND DAYBREAK.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST 8 TO 16 MPH.
VENTILATION INDEX...MODERATE (350) DECREASING TO LOW (60)
OVERNIGHT.
FRIDAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.2 PERCENT.
MAX TEMPERATURE.....79-87.
MIN HUMIDITY........18-23 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 8 MPH EARLY
IN THE MORNING.
RIDGETOP WIND.......SOUTHWEST TO WEST WIND 5 TO 10 MPH.
MIXING HEIGHT.......4000 FT AGL.
TRANSPORT WINDS.....WEST 7 TO 8 MPH SHIFTING TO THE NORTHWEST 9 TO
10 MPH LATE IN THE AFTERNOON.
VENTILATION INDEX...LOW (80-90) INCREASING TO MODERATE (260-270) IN
THE AFTERNOON.
FORECASTER...NIERENBERG
REQUESTED BY...IC
TYPE OF REQUEST...WILDFIRE
.TAG 2617422.0/PDT
.DELDT 07/16/26
.FORMATTERVERSION 2.0.0
.EMAIL ROBERT_NIX@BIA.GOV,SYDNEYTHOMPSON@CTUIR.ORG
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