996
FXUS66 KPDT 302114
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
214 PM PDT SAT MAY 30 2026
KEY MESSAGES
- WARMING TEMPERATURES THROUGH MIDWEEK.
- DRY CONDITIONS FOR MUCH OF THE WEEK, WITH THE POTENTIAL FOR
MAINLY MOUNTAIN SHOWERS AND THUNDERSTORMS AROUND MIDWEEK.
DISCUSSION
A MORE ZONAL FLOW IS EXPECTED TO DEVELOP OVER THE REGION AS AN
UPPER LOW OVER THE NORTHERN ROCKIES MOVES NORTHEAST. BY SUNDAY,
A WEAK UPPER LOW WILL MOVE OVER THE AREA, BUT IS EXPECTED TO BE
DRY. THIS LOW WILL THEN HELP CARVE OUT A BROADER TROUGH THAT
WILL SHIFT EASTWARD WITH THE UPPER LOW MOVING TO NORTHERN
MONTANA/SOUTHERN CANADA BY MONDAY NIGHT. CAN'T RULE OUT A
PASSING SHOWER WITH THE LOW, ESPECIALLY OVER THE MOUNTAINS, BUT
OVERALL CHANCES ARE LOW (<20 PERCENT).
AS THIS LOW SPINS TO THE NORTHEAST, WEAK RIDGING WILL BUILD IN
FOR TUESDAY. A WEAK TROUGH AND SOME SHORTWAVE ENERGY WILL THEN
MOVE ACROSS THE REGION WEDNESDAY INTO THURSDAY. WITH THIS
FEATURE WILL COME THE BEST CHANCES FOR PRECIPITATION AND
THUNDERSTORMS IN THE NEXT 7 DAYS. THUNDERSTORM CHANCES, ALTHOUGH
LOW (<20 PERCENT) LOOK TO BE HIGHEST OVER THE MOUNTAINS OF
CENTRAL AND EASTERN OREGON).
DRY AND A BIT COOLER WEATHER RETURNS FOR THURSDAY AND FRIDAY.
BY SATURDAY, PRECIPITATION MAY START TO RETURN, ESPECIALLY TO
THE CASCADES AS AN UPPER LOW OFF THE COAST APPROACHES THE
REGION. THERE IS STILL SOME UNCERTAINTY WITH THE TIMING OF THIS
SYSTEM, AND WE ARE A WEEK AWAY BUT IT WILL BEAR WATCHING.
ADDITIONALLY, DEPENDING ON THE TRACK AND TIMING, WINDS MAY BEGIN
TO INCREASE AS EARLY AS FRIDAY, OR INTO SATURDAY ACROSS
PORTIONS OF THE AREA.
AVIATION /18Z TAFS THROUGH 18Z SUNDAY/
VFR CONDITIONS WILL PERSIST THROUGH THE FORECAST PERIOD FOR ALL
SITES EXCEPT BDN. BDN WILL SEE A FEW HOURS OF MVFR DUE TO LOW
CLOUDS LINGERING OVER THE SITE, THESE SHOULD DISSIPATE AFTER
22Z. DLS/PDT/RDM/BDN/YKM WILL ALL SEE BREEZY WINDS THROUGH THE
PERIOD OF 10-15 KTS WITH GUSTS BETWEEN 20-30 KTS. WINDS AT THESE
LOCATIONS WILL SETTLES AFTER 06-07Z. ALL OTHER SITES WILL BE
BELOW 10 KTS. 90
PRELIMINARY POINT TEMPS/POPS
PDT 42 71 44 76 / 0 0 0 0
ALW 47 72 49 77 / 0 0 0 0
PSC 43 77 47 81 / 0 0 0 0
YKM 42 77 47 80 / 0 0 0 0
HRI 43 74 46 80 / 0 0 0 0
ELN 39 71 44 75 / 0 0 0 0
RDM 29 66 34 73 / 0 0 0 0
LGD 37 68 39 73 / 0 0 0 0
GCD 34 69 37 75 / 0 0 0 0
DLS 45 76 49 82 / 0 0 0 0
PDT WATCHES/WARNINGS/ADVISORIES
WA...NONE.
OR...NONE.
DISCUSSION...77
AVIATION...90
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