006
FXUS66 KPDT 132307
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
407 PM PDT WED MAY 13 2026
KEY MESSAGES
- SHOWERS AND GUSTY WINDS TODAY.
- ANOTHER SYSTEM WILL AFFECT THE REGION OVER THE WEEKEND.
- DRIER AND WARMER TOWARD THE MIDDLE OF NEXT WEEK.
DISCUSSION
AN UPPER LOW/TROUGH WAS MOVING ACROSS THE PACIFIC NORTHWEST AND
WILL EXIT THE REGION THIS EVENING. A MORE ZONAL FLOW WILL THEN
BE IN PLACE THROUGH SATURDAY. GUSTY WINDS WILL CONTINUE, AND
WIND ADVISORY AND HIGH WIND WARNINGS CONTINUE, THOUGH SOME
AREAS HAVE BEEN GETTING THE STRONG WINDS WHILE OTHERS HAVE NOT.
WINDS WILL DECREASE DURING THE EVENING HOURS AND OVERNIGHT.
ON SATURDAY, AN UPPER LOW WILL DROP DOWN FROM CANADA INTO THE
PACIFIC NORTHWEST, BUT THERE ARE SIGNIFICANT DIFFERENCES AS TO
THE HANDLING OF THIS FEATURE, WITH THE DETERMINISTIC GFS BEING
WEAKER THAN THE DETERMINISTIC ECWMF WHICH IS MUCH STRONGER AND
EVENTUALLY CARVES OUT A TROUGH OVER THE GREAT BASIN. HIGH
PRESSURE WILL THEN BUILD IN TOWARD MIDWEEK.
THE DEEPER ECMWF SOLUTION, ALSO SUPPORTED BY THE CANADIAN HAS
SUPPORT OF ABOUT 43 PERCENT OF THE ENSEMBLE CLUSTERS. THERE WILL
LIKELY BE AT LEAST SOME MOUNTAIN RAIN WITH THIS SYSTEM AS IT
MOVES ACROSS THE REGION THROUGH SUNDAY. DRY WEATHER WITH WARMING
TEMPERATURES IS EXPECTED AFTER THAT.
AVIATION /00Z TAFS THROUGH 00Z FRIDAY/
VFR CONDITIONS WILL PERSIST THROUGH THE FORECAST PERIOD.WINDS
WILL STILL BE THE PRIMARY CONCERN THROUGH THE PERIOD WITH ALL
TAF SITES SEEING WINDS OF 15-20KTS WITH GUSTS OF 30-35 KTS.
THERE IS ALSO SOME WIND SHEAR CONCERNS AT PDT OF WS020/25035KT
BETWEEN 6-17Z.WITH THE RAIN THAT CAME THROUGH, THE THREAT OF
BLDU HAS DECREASED BUT COULD STILL OCCUR UNDER THE WINDY
CONDITIONS. WINDS WILL SETTLE FOR THE CENTRAL OR TAF SITES
BDN/RDM AFTER 3-5Z WITH WINDS DECREASING TO UNDER 10 KTS. CIGS
WILL BE MOSTLY 25KFT.
PRELIMINARY POINT TEMPS/POPS
PDT 43 68 42 66 / 0 0 0 0
ALW 47 68 46 66 / 10 0 0 0
PSC 47 73 45 70 / 0 0 0 0
YKM 43 71 40 68 / 0 0 0 0
HRI 46 71 45 68 / 0 0 0 0
ELN 39 63 36 60 / 10 0 10 0
RDM 31 71 33 66 / 0 0 0 0
LGD 38 68 39 64 / 0 0 0 0
GCD 35 72 37 67 / 0 0 0 0
DLS 47 69 47 66 / 0 0 0 0
PDT WATCHES/WARNINGS/ADVISORIES
WA...WIND ADVISORY UNTIL 11 PM PDT THIS EVENING FOR WAZ024-026>029.
HIGH WIND WARNING UNTIL 11 PM PDT THIS EVENING FOR WAZ521.
OR...WIND ADVISORY UNTIL 11 PM PDT THIS EVENING FOR ORZ041-044-510.
HIGH WIND WARNING UNTIL 11 PM PDT THIS EVENING FOR ORZ507-508.
DISCUSSION...77
AVIATION...90
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