798
FXUS66 KPDT 281155
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
355 AM PST WED JAN 28 2026
DISCUSSION
THE LEADING LINE OF PRECIPITATION WILL EXIT THE EASTERN MOUNTAINS
BY AROUND 5-6 AM LEAVING ONLY LINGERING SHOWERS OVER THE NORTHERN
BLUES THROUGH MID AFTERNOON. PRECIPITATION TONIGHT AND EARLY
THURSDAY SHOULD BE MORE RELEGATED TO WESTERN AREAS, THE KITTITAS
VALLEY AND THE UPPER SLOPES OF THE WA CASCADE CREST.
THIS IS BEING FORCED BY THE LINGERING ATMOSPHERIC RIVER INFLUENCE
WHICH INDICATES A 150-200KG/MS IVT SIGNAL INTO THE EASTERN
COLUMBIA RIVER GORGE REGION OVERNIGHT. SNOW SHOULD BE RELEGATED
TO WA522 AND WA523 WITH RAIN OR POSSIBLY FREEZING RAIN POTENTIAL
(FAIRLY LOW, AROUND 25-30% CHANCES) ACROSS THE LOWER SLOPES OF THE
WA CASCADES AND IN THE KITTITAS VALLEY/ELLENSBURG AREA. MOST
OTHER AREAS OF THE LOWLANDS HAVE TEMPERATURES OVERNIGHT REMAINING
ABOVE FREEZING BASED ON THE NBM EXPECTED VALUES, RESULTING IN RAIN
AT THE SURFACE.
TEMPERATURES MODERATE SLIGHTLY FOR THE REST OF THE WEEK AND
THROUGH THE WEEKEND, PLATEAUING IN THE UPPER 40S TO AROUND 50
DEGREES. WARMER MID 50S MIGHT BE FOUND IN CENTRAL OREGON SATURDAY
AFTERNOON, AND LOWS THOUGH THE PERIOD MAINTAIN THE LOW TO MID 30S
ACROSS THE COLUMBIA BASIN.
AVIATION
CONDITIONS AT TERMINALS ARE ANTICIPATED TO REMAIN VFR THROUGH THIS
TAF SET, WITH CHANCES FOR RAIN RETURNING LATE TODAY AT DLS/YKM.
PRELIMINARY POINT TEMPS/POPS
PDT 48 34 50 37 / 10 20 40 20
ALW 47 37 50 39 / 40 20 50 20
PSC 46 33 47 35 / 10 30 40 30
YKM 41 32 42 35 / 20 50 60 30
HRI 47 33 49 35 / 10 30 30 20
ELN 39 31 39 33 / 30 50 70 50
RDM 47 31 51 34 / 10 30 20 0
LGD 46 31 44 35 / 40 20 50 10
GCD 45 31 46 34 / 10 20 50 10
DLS 45 37 47 38 / 50 80 80 30
PDT WATCHES/WARNINGS/ADVISORIES
OR...NONE.
WA...NONE.
DISCUSSION...71
AVIATION...71
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