656
FXUS66 KPDT 110544
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
944 PM PST SAT JAN 10 2026
.UPDATED AVIATION.
AVIATION...06Z TAFS
DRY CONDITIONS CONTINUE TO PERSIST AS HIGH
PRESSURE SURPASSES ANY SUBSTANTIAL PRECIPITION. GIVEN THAT, VFR
CONDITIONS ARE CONTINUE TO PERSIST THROUGH THE PERIOD FOR ALL
TERMINALS (70 TO 90 PERCENT CHANCE CONFIDENCE). LIGHT AND VARIABLE
WINDS WITH MOSTLY TERRAIN DRIVEN DIRECTION WILL PERSIST AS WELL.
PREV DISCUSSION
/ISSUED 221 PM PST SAT JAN 10 2026/
DISCUSSION...A RIDGE SITUATED OVER THE PACNW WILL FLATTEN TODAY IN
RESPONSE TO A SERIES OF UPPER-LEVEL WAVES PASSING TO OUR NORTHWEST.
THESE WAVES WILL BRING PRECIP TO THE CENTRAL WA CASCADES OVER THE
NEXT COUPLE OF DAYS, BUT WITH SNOW LEVELS RISING TO ABOVE 5000 FT BY
MIDDAY SUNDAY DUE TO W/SW FLOW ALOFT, NOT EXPECTING ANY SNOW IMPACTS
TO OUR MAIN MOUNTAIN PASSES IN THE AREA. THE REGION WILL OTHERWISE
BE ENTERING A BENIGN PATTERN OVER THE NEXT WEEK, AS HIGH PRESSURE
RETURNS TUESDAY INTO WEDNESDAY.
NOT MUCH TO SPEAK OF THIS AFTERNOON AS LATEST SATELLITE IMAGERY
DEPICTS MID-LEVEL CLOUDS POURING INTO THE FORECAST AREA AS A RESULT
OF THE AFOREMENTIONED W/SW FLOW. SHOWERS REMAIN SITUATED OVER THE
OLYMPIC PENINSULA, BUT ARE EXPECTED TO SHIFT WEST-NORTHWESTWARD
OVER THE NEXT 24 HOURS, CLIPPING THE CENTRAL WA CASCADES WITH
PRECIP. AGAIN, OUTSIDE OF MOUNTAINTOPS, SNOWFALL IMPACTS TO THE AREA
ARE EXPECTED TO BE MINIMAL, WITH LITTLE TO NO SNOW OCCURRING ACROSS
SNOQUALMIE, BLEWETT, OR WHITE PASSES. OTHERWISE, ONLY IMPACTS TODAY
ARE BREEZY WINDS ACROSS THE GRANDE RONDE VALLEY STEMMING FROM THIS
RIDGE FLATTENING, AND SOME LOCALLY DENSE FREEZING FOG IN THE
KITTITAS VALLEY THIS MORNING DUE TO RELATIVELY STAGNANT CONDITIONS
THERE.
HIGH PRESSURE REBUILDS BY THE MIDWEEK, HOWEVER MODELS DISAGREE AS TO
WHERE THIS RIDGE CENTERS ITSELF THROUGH THE END OF THE WORK WEEK.
DETERMINISTIC GUIDANCE SUGGESTS WE'LL SEE ANOTHER FLATTENING OF THIS
RIDGE LATE WEDNESDAY INTO THURSDAY, BEFORE REBUILDING OFFSHORE
HEADING INTO NEXT WEEKEND. LITTLE SIGNAL FOR PRECIP CURRENTLY EXISTS
ACROSS ENSEMBLE GUIDANCE AS OF NOW, SO MAIN IMPACTS FROM THIS
PATTERN WOULD BE A SLIGHT REBOUNDING OF TEMPS, BEFORE FOG DEVELOPS
ACROSS THE BASIN MIDWEEK DUE TO THE STRENGTHENING TEMPERATURE
INVERSION OVER TIME. 74
PRELIMINARY POINT TEMPS/POPS
PDT 30 52 34 55 / 0 0 0 0
ALW 34 50 37 55 / 0 10 0 10
PSC 29 49 33 54 / 0 10 0 0
YKM 30 44 33 50 / 0 20 10 10
HRI 30 47 32 53 / 0 10 0 0
ELN 29 41 32 48 / 10 30 30 30
RDM 26 52 28 54 / 0 0 0 0
LGD 30 44 31 48 / 0 0 0 0
GCD 28 48 30 53 / 0 0 0 0
DLS 35 49 36 51 / 0 10 10 10
PDT WATCHES/WARNINGS/ADVISORIES
OR...NONE.
WA...FREEZING FOG ADVISORY UNTIL 1 AM PST SUNDAY FOR WAZ026.
SHORT TERM...74
LONG TERM....74
AVIATION...95
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