340
FXUS66 KPDT 260516
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
916 PM PST SUN JAN 25 2026
UPDATED AVIATION DISCUSSION
AVIATION...06Z TAFS
VFR CONDITIONS WILL PREVAIL THROUGHOUT THE
PERIOD WITH LIGHT WINDS. AS THE UPPER LEVEL RIDGE BUILDS ACROSS THE
REGION, HIGH CLOUDS WILL BE EXPECTED FOR ALL SITES (SCT-OVC 100-
250). FEASTER/97
PREV DISCUSSION
/ISSUED 315 PM PST SUN JAN 25 2026/
DISCUSSION
SATELLITE IMAGERY REVEALS MOSTLY CLEAR SKIES ACROSS
THE FORECAST AREA AS THE REGION IS UNDER A DRY NORTHWESTERLY FLOW
ALOFT ON THE EAST SIDE OF AN UPPER-LEVEL RIDGE OF HIGH PRESSURE.
FARTHER WEST, THE NEXT TWO WEATHER SYSTEMS THAT ARE EXPECTED TO
INFLUENCE OUR WEATHER ARE VISIBLE OFFSHORE IN THE PACIFIC. A WEAK
SHORTWAVE TROUGH WILL PASS OVERHEAD TONIGHT THROUGH MONDAY, THOUGH
THE SYSTEM IS ONLY EXPECTED TO BRING MID- TO HIGH CLOUDS WITH
LITTLE TO NO PRECIPITATION.
UPPER-LEVEL RIDGING WILL RETURN MONDAY NIGHT THROUGH TUESDAY
MORNING. TUESDAY AFTERNOON AND EVENING, A STRONGER SHORTWAVE IS
SHOWN IN ENSEMBLE AND DETERMINISTIC GUIDANCE. WHILE
PRECIPITATION CHANCES ARE BEST FOR THE MOUNTAINS, THE MAIN CONCERN
WILL BE SOME WINTRY MIX FOR THE LOWER ELEVATIONS IF THE COLD POOL
IN THE COLUMBIA BASIN CONTINUES TO LINGER. THERMODYNAMIC PROFILES
FROM CURRENT GUIDANCE ARE SUPPORTIVE OF SNOW FOR THE KITTITAS
VALLEY AND HIGHER PORTIONS OF THE YAKIMA VALLEY, WITH POCKETS OF
LIGHT FREEZING RAIN FOR THE COLUMBIA BASIN BELOW 3000-3500 FT.
THURSDAY THROUGH SATURDAY, A WARMER, WETTER PATTERN IS LIKELY
(60-70% CHANCE) FOR THE PACIFIC NORTHWEST, BUT THE BEST CHANCES
(60-80%) OF PRECIPITATION WILL BE ALONG THE WASHINGTON CASCADES
WITH LOWER CHANCES (40% OR LESS) ELSEWHERE.
PRELIMINARY POINT TEMPS/POPS
PDT 20 38 24 38 / 0 0 0 0
ALW 23 37 26 38 / 0 0 0 0
PSC 22 35 22 38 / 0 0 0 0
YKM 22 34 23 37 / 0 0 0 0
HRI 22 36 23 37 / 0 0 0 0
ELN 20 32 22 33 / 0 0 0 0
RDM 22 48 25 47 / 0 0 0 0
LGD 23 39 25 42 / 0 0 0 0
GCD 24 45 25 46 / 0 0 0 0
DLS 25 39 28 40 / 0 0 0 0
PDT WATCHES/WARNINGS/ADVISORIES
OR...NONE.
WA...NONE.
DISCUSSION...86
AVIATION...97
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