518
FXUS66 KPDT 080954
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
254 AM PDT SAT AUG 8 2026
KEY MESSAGES
- BREEZY TO WINDY CONDITIONS TODAY WITH LOW RELATIVE HUMIDITIES
WILL CREATE AREAS OF ELEVATED TO CRITICAL FIRE WEATHER
CONDITIONS.
- CONTINUED DRY AND BREEZY CONDITIONS WILL CONTINUE THROUGH
EARLY NEXT WEEK.
DISCUSSION
WESTERLY FLOW HAS SET UP ACROSS THE REGION AND GUSTY WINDS WILL
REMAIN FOR ONE MORE DAY. WIND GUSTS IN THE 25 TO 30 MPH RANGE,
WITH SOME AREAS AS HIGH AS 35 MPH AND POSSIBLY EVEN 40 MPH
ACROSS THE CASCADE GAPS, COLUMBIA BASIN, GORGE, SIMCOE
HIGHLANDS AND KITTITAS VALLEY. NBM PROBABILITIES OF WIND GUSTS
>=25 MPH ARE GREATER THAN 80 PERCENT ACROSS THESE AREAS. WIND
GUSTS >= 39 MPH ARE GENERALLY 50 PERCENT OR LESS EXCEPT FOR
PORTIONS OF THE OREGON COLUMBIA BASIN AND THE KITTITAS VALLEY
WHERE THEY ARE 70 PERCENT OR HIGHER.
WIND GUSTS WILL DECREASE SUNDAY, BUT WILL REMAIN ELEVATED,
GENERALLY IN THE 20 TO 25 MPH RANGE THROUGH MONDAY BEFORE
DECREASING FURTHER THROUGH MIDWEEK.
THE COMBINATION OF VERY LOW RH AND THE GUSTY WINDS WILL MAKE FOR
ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS TODAY AND RED FLAG
WARNINGS REMAIN IN PLACE. FOR SUNDAY AND MONDAY, CONCERNS REMAIN
ELEVATED, BUT WIDESPREAD CRITICAL CONDITIONS ARE NOT ANTICIPATED.
TEMPERATURES WILL ALSO BE ABOUT 5 OR SO DEGREES COOLER TODAY
THAN ON FRIDAY AND SUNDAY WILL BE A FEW DEGREES COOLER STILL.
AVIATION /06Z TAFS THROUGH 06Z SUNDAY/
VFR CONDITIONS ARE EXPECTED THROUGH THE TAF PERIOD. THE
WESTERLY FLOW HAS CLEARED OUT A LOT OF THE SMOKE, AT LEAST
TEMPORARILY. WHILE SOME BRIEF REDUCTION IN CIGS/VSBYS CAN NOT
BE RULED OUT, ESPECIALLY IN THE EARLY MORNINGS, WIDESPREAD MVFR
OR LOWER CONDITIONS ARE NOT EXPECTED.
WEST TO NORTHWEST WIND GUSTS 20 TO 30 KTS ARE EXPECTED THIS
AFTERNOON AND EVENING AT ALL SITES EXCEPT PSC. ALL SITES WILL
RETURN TO 10 KTS OR LESS THIS EVENING AND OVERNIGHT.
FIRE WEATHER
RED FLAG WARNINGS REMAIN IN EFFECT FOR TODAY FOR THE
COMBINATION OF LOW RELATIVE HUMIDITIES (10-15 PERCENT, AND LOWER
IN A FEW AREAS) AND WIND GUSTS 25 TO 30 MPH AND AS HIGH AS 40
MPH. WINDS WILL DECREASE SUNDAY INTO MONDAY BUT REMAIN IN THE 20
TO 25 MPH RANGE. THESE WINDS WILL STILL BE ENOUGH FOR ELEVATED
FIRE WEATHER CONCERNS. TEMPERATURES WILL DECREASE A ABOUT 5 OR
SO DEGREES TODAY AND A FEW MORE DEGREES MONDAY, WHICH WILL CAUSE
A SLIGHT UPTICK IN HUMIDITY.
PRELIMINARY POINT TEMPS/POPS
PDT 93 56 89 57 / 0 0 0 0
ALW 94 63 91 62 / 0 0 0 0
PSC 96 59 93 58 / 0 0 0 0
YKM 96 60 93 59 / 0 0 0 0
HRI 95 62 92 60 / 0 0 0 0
ELN 89 59 88 57 / 0 0 0 0
RDM 93 48 90 46 / 0 0 0 0
LGD 95 55 92 55 / 0 0 0 0
GCD 95 54 92 53 / 0 0 0 0
DLS 93 62 90 60 / 0 0 0 0
PDT WATCHES/WARNINGS/ADVISORIES
WA...RED FLAG WARNING UNTIL 11 PM PDT THIS EVENING FOR WAZ690-691.
AIR QUALITY ALERT UNTIL 5 AM PDT TUESDAY FOR WAZ024-026>030-
521>523.
OR...AIR QUALITY ALERT UNTIL NOON PDT MONDAY FOR ORZ041-044-049-050-
502-503-505>511.
RED FLAG WARNING UNTIL 11 PM PDT THIS EVENING FOR ORZ691-701-
703.
DISCUSSION...77
AVIATION...77
FIRE WEATHER...77
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