323
FXUS66 KPDT 300514
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
1014 PM PDT TUE SEP 29 2026
KEY MESSAGES
- |BREEZY TO LOCALLY WINDY CONDITIONS CONTINUE THROUGH TODAY AND
TONIGHT.
- LIGHT TO MODERATE MOUNTAIN SHOWERS CONTINUE IN THE WASHINGTON
CASCADES.
- NEAR TO JUST ABOVE NORMAL TEMPERATURE PATTERN WITH DRY
CONDITIONS THROUGH THE AREA.
DISCUSSION
RADAR ADVERTISES LIGHT TO MODERATE RAIN RETURNS IN THE
WASHINGTON CASCADES THROUGH THIS AFTERNOON AS ZONAL FLOW ALOFT
CONTINUES TO PROMOTE LIFTING. CURRENT ESTIMATES OF RAIN SO FAR
NEAR SNOQUALMIE IS AROUND 0.05 TO 0.15 INCHES OF RAIN AND WILL
CONTINUE TO ACCUMULATE THROUGH THE EVENING HOURS TONIGHT.
OTHERWISE, TIGHT PRESSURE GRADIENTS CAUSED BY THE SPLIT FLOW IS
DEVELOPING BREEZY TO LOCALLY WINDY CONDITIONS ACROSS THE AREA,
WITH MANY OBS REPORTING 25 TO 35 MPH GUSTS. IT'S POSSIBLE WE CAN
SEE SOME BLOWING DUST FROM SOME OF THESE EVENTS (10-30% CHANCE),
BUT NOTHING FROM THE SURFACE SUGGEST ANYTHING IS CURRENTLY
CAUSING OBSCURE VISIBILITY. WINDS WILL STAY FAIRLY BREEZY
THROUGH THE NIGHT HOURS ACROSS THE BASIN, CASCADE GAPS, AND THE
KITTITAS VALLEY THO NOT AS STRONG AS IT IS CURRENTLY. ONCE WE
GO THROUGH THE LATER MORNING HOURS, THE SHORTWAVE WILL MOVE FAR
ENOUGH AWAY THAT WE'LL SEE THOSE PG'S LOOSEN AND WILL RESULT IN
LIGHTER WINDS.
GUIDANCE IS IN PRETTY GOOD AGREEMENT OVER THE WEEKEND AND INTO
EARLY NEXT WEEK THAT A RIDGE JUST OFF THE PACIFIC WILL PUSH INTO
THE WEST COAST BY THURSDAY/FRIDAY AND AMPLIFY AS IT COMES
ONSHORE. THIS WILL BRING DRIER, WARMER CONDITIONS WITH THE
POTENTIAL FOR MORE ELEVATED FIRE WEATHER CONCERNS HEADING INTO
THE WEEKEND. TEMPERATURES WILL GRADUALLY WARM HEADING INTO NEXT
WEEK, WITH HIGHS REACHING AT LEAST THE HIGH 70S TO LOW 80S
(50-70% CONFIDENCE) IN MOST OF THE LOWER ELEVATED AREAS. LIGHT
WINDS WITH MOSTLY DIURNAL WIND SPEED CHANGES WILL PREVAIL WITH
THIS PATTERN (70-90% CONFIDENCE).
AVIATION /06Z TAFS THROUGH 06Z THURSDAY/
VFR CONDITIONS WILL PERSIST THROUGH THE FORECAST PERIOD. WINDS
WILL BE THE PRIMARY CONCERN THROUGH THE EARLY PORTION OF THE
PERIOD. DLS/ALW/PSC WILL SEE SUSTAINED WINDS OF 10 TO 15 KNOTS
WITH GUSTS AS HIGH AS 25 KNOTS. BY THE EARLY EVENING HOURS,
WINDS WILL CALM DOWN TO 12 KNOTS OR LESS.
PRELIMINARY POINT TEMPS/POPS
PDT 49 72 46 74 / 0 0 0 0
ALW 54 72 49 75 / 0 10 0 0
PSC 50 75 46 77 / 0 0 0 0
YKM 51 73 48 74 / 0 0 0 0
HRI 52 75 47 76 / 0 0 0 0
ELN 44 67 42 68 / 10 0 0 0
RDM 39 76 41 77 / 0 0 0 0
LGD 47 71 45 76 / 0 0 0 0
GCD 43 75 45 79 / 0 0 0 0
DLS 55 78 51 80 / 0 0 0 0
PDT WATCHES/WARNINGS/ADVISORIES
WA...NONE.
OR...NONE.
DISCUSSION...95
AVIATION...90
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