570
FXUS66 KPDT 122229
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
329 PM PDT MON OCT 12 2026
KEY MESSAGES
- COLD MORNING TEMPERATURES CONTINUE THROUGH EARLY WEEK.
*FREEZE WARNINGS ISSUED*
- WARMING TREND THROUGH THE WEEK, MOUNTAIN SHOWERS LATE IN
WEEK.
DISCUSSION
FREEZE WATCHES HAVE BEEN UPGRADED TO FREEZE WARNING PRETTY MUCH
ACROSS THE BOARD, WITH SOME AREAS HAVING MUCH HIGHER
PROBABILITIES FOR SUB-FREEZING TEMPERATURE BY TUESDAY MORNING
(GRANDE RONDE VALLEY, WALLOWA COUNTY, BLUE MT FOOTHILLS). THE
AREA WILL UNDERGO CLEARING AS A POSITIVELY TILTED RIDGE PUSHES
ACROSS THE PAC NW AND INTERIOR NW OVERNIGHT. WINDS THROUGHOUT
THE COLUMBIA BASIN WILL BE THE LIGHTEST AND THAT IS WHERE
CONCERN THAT PROBABILITIES MIGHT NOT BE HIGH ENOUGH FOR
FREEZING. LIGHT SOUTHERLY WINDS ACROSS THE CENTRAL OREGON ZONES
AND FOOTHILLS OF THE OREGON BLUES, AND LIGHT EASTERLY TO
SOUTHEAST WINDS ROUND OUT THE TRI-CITIES AND FOOTHILLS OF THE
BLUES IN WASHINGTON.
THROUGH MIDWEEK, A GRADUAL RECOVERY OF TEMPERATURES INTO THE
70S FOR HIGHS AND ABOVE FREEZING UPPER 30S INTO THE 40S FOR
LOWS WILL BE THE TREND. POTENTIAL FOR APPROACHING 80 DEGREES
RETURNS PER THE NBM'S MAXT FORECASTS FOR THE FOOTHILLS OF THE
BLUE MTS, THE JOHN DAY BASIN AND CENTRAL OREGON BY FRIDAY
AFTERNOON AS BREEZY WINDS REDEVELOP LATE WEEK.
FROM A CLUSTERS PERSPECTIVE THE ENSEMBLE GROUPS DON'T SEEM TO
HAVE LARGE DISCREPANCIES IN LIGHT PRECIPITATION AMOUNTS FOR THE
THE DAYS 7 AND 8 PERIOD, BUT MORE TIMING WHEREAS ALL OF THE
CLUSTERS OFFER LIGHT (SUB ONE TENTH OF AN INCH) OF RAIN ACROSS
THE LOWER ELEVATIONS VS IN EXCESS OF ONE TENTH ACROSS SOME OF
THE THE MOUNTAIN ZONES OCT 19-22.
AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/
VFR CONDITIONS AND PREDOMINANTLY LIGHT, DIURNALLY DRIVEN WINDS
OF 10 KTS OR LESS ARE FORECAST AT ALL SITES THROUGH THE PERIOD.
PRELIMINARY POINT TEMPS/POPS
PDT 29 64 36 69 / 0 0 0 0
ALW 34 65 41 69 / 0 0 0 0
PSC 31 67 36 71 / 0 0 0 0
YKM 34 65 40 71 / 0 0 0 0
HRI 29 66 36 70 / 0 0 0 0
ELN 30 62 35 67 / 0 0 0 0
RDM 22 66 31 70 / 0 0 0 0
LGD 25 64 31 69 / 0 0 0 0
GCD 24 64 33 70 / 0 0 0 0
DLS 37 70 41 74 / 0 0 0 0
PDT WATCHES/WARNINGS/ADVISORIES
WA...FREEZE WARNING FROM 11 PM THIS EVENING TO 9 AM PDT TUESDAY FOR
WAZ026>029-521.
OR...FREEZE WARNING FROM 11 PM THIS EVENING TO 9 AM PDT TUESDAY FOR
ORZ044-049-050-507-508-510.
DISCUSSION...71
AVIATION...86
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