808
FXUS66 KPDT 162225
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
225 PM PST SUN NOV 16 2025
DISCUSSION
THE AREA IS SITUATED BETWEEN A TROUGH AND RIDGE,
ALLOWING FOR UPPER SOUTHERLY WINDS TO BRING ABUNDANT MOISTURE AND
WIDESPREAD CLOUD COVER INTO THE AREA. AN AREA OF SHOWERS COUPLED
WITH LOW TO MID LEVEL CLOUDS IS SITUATED ACROSS THE COLUMBIA
BASIN INTO THE SOUTHERN BLUE MOUNTAINS AND EASTERN MOUNTAINS.
BRIEF PERIODS OF ON AND OFF SHOWERS CONTINUE FOR PARTS OF CENTRAL
OREGON AND THE CASCADE MOUNTAINS. RAIN SHOWERS ARE EXPECTED TO
CONTINUE GOING THROUGH TUESDAY, WITH SOME OF THESE SHOWERS TURNING
INTO MOUNTAIN SNOW SHOWERS OR A RAIN/SNOW MIX GOING THROUGH THE
NEXT 24 TO 36 HOURS. NO SIGNIFICANT ACCUMULATION IS EXPECTED FROM
THIS SYSTEM.
WE'LL RECEIVE A BRIEF DRY PERIOD ON WEDNESDAY AS A RIDGE PUSHES
ASHORE AND AMPLIFIES SLIGHTLY TO BRING SOME SUBSIDENCE CONDITIONS
TO HINDER PRECIP. CLEARER SKIES AND WEAKER WINDS OVERNIGHT
WEDNESDAY MORNING WILL COOL MIN TEMPERATURES BELOW FREEZING FOR
MUCH OF THE AREA. THE COOLEST TEMPERATURES WILL BE LOCATED ALONG
CENTRAL OREGON WITH LOW TEMPS EXPECTED TO BE IN THE LOW TO MID
20S. ELSEWHERE WILL SEE HIGH 20S TO MID 30S. GOING THROUGH THE
REST OF THE WEEK, SLIGHT CHANCE OF POP (20-40%) WILL CONTINUOUSLY
BE ON AND OFF IN THE BASIN AS ANOTHER SHORTWAVE PAVES ITS WAY INTO
THE REGION, ALBEIT A BIT WEAKER THAN THE CURRENT SYSTEM SITUATED
TODAY. MOUNTAIN SNOW SHOWERS WILL CONTINUE TO DEVELOP WITH THE
HEAVIEST ACCUMULATIONS OCCURRING THE CENTRAL WA CASCADES, WITH A
SECONDARY REGIONAL MAXIMA IN THE WALLOWA MOUNTAINS & OR CASCADES.
EXACT DETAILS ON QPF AMOUNTS ARE YET TO BE DETERMINED BUT NBM IS
GENERATING UP TO A FOOT IN SOME PARTS OF THE CRESTS DURING THIS
UPCOMING WEEKEND, FOLLOWED BY UP TO FIVE INCHES IN THE WALLOWA'S &
OR CASCADES. NO IMMEDIATE HIGHLIGHTS EXPECTED IN THE SHORT TERM,
BUT A WILL NEED TO KEEP AN EYE ON THE TREND OF MIN TEMPERATURES IN
THE GORGE AREA FOR WAZ024 & ORZ041 FOR POSSIBLE FREEZING, GIVING
THE AREA ITS SEASONAL ENDING FREEZE IF IT VERIFIES.
AVIATION...00Z TAFS
VFR CONDITIONS CURRENTLY ACROSS MOST SITES,
WITH MVFR CONDITIONS FOR KALW AND IFR FOR KDLS/KPDT DUE TO REDUCED
CEILINGS OF 700 FEET AND VISIBILITIES OF 2SM RESPECTIVELY. THESE
CONDITIONS ARE EXPECTED TO PERSIST AS LIGHT RAIN CONTINUES ACROSS
ALL SITES ASSOCIATED WITH A PASSING SYSTEM. AS A RESULT, WIDESPREAD
CEILINGS OF 1.5-2.5KFT ARE EXPECTED, BRINGING MOST SITES INTO MVFR
THIS EVENING. FOG IS EXPECTED TO REDEVELOP FOR KDLS/KALW TONIGHT,
BUT WILL IMPROVE BY MID- TO LATE MORNING. 75
PRELIMINARY POINT TEMPS/POPS
PDT 44 57 38 49 / 80 40 30 20
ALW 47 58 42 48 / 90 60 50 40
PSC 44 58 39 52 / 70 20 20 10
YKM 43 57 36 53 / 30 20 20 10
HRI 45 57 40 51 / 70 30 20 10
ELN 40 54 34 47 / 50 30 40 10
RDM 37 55 29 47 / 40 40 10 0
LGD 43 55 37 51 / 100 70 50 40
GCD 42 56 35 51 / 90 50 30 20
DLS 48 57 41 52 / 60 50 20 10
PDT WATCHES/WARNINGS/ADVISORIES
OR...NONE.
WA...NONE.
SHORT TERM...95
LONG TERM....95
AVIATION...75
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