Pendleton, Oregon 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

354
FXUS66 KPDT 182249
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
349 PM PDT Wed Jun 18 2025

Updated Aviation Discussion

.AVIATION...00z TAFs...VFR conditions expected. Breezy W/NW winds
will subside by nightfall, before picking up once again tomorrow
afternoon, albeit at calmer speeds, peaking at gusts to around
20-25 kts for sites such as DLS and PDT. Skies will remain clear
through tomorrow morning, before high sct-bkn cigs build in by
Thursday afternoon. Evans/74

&&

.PREV DISCUSSION... /issued 142 PM PDT Wed Jun 18 2025/

SHORT TERM...today through Saturday morning...Radar depicts clear
skies across our CWA, however its a different story with stratus
covering most of the area west of the Cascades. This has caused
some temperature gradient between the regions, and as a result has
enhanced the winds near the gap in the Cascades. Nothing to
suggest Wind Advisory at this time since intensity and/or area
coverage doesn`t suffice to issue a highlight. The rest of the
short term will be characterized as the trough system moving from
the Pacific into our region. Moisture advection and increased
vorticity values in the mid-levels will result in some slight
chance of thunderstorms across the Eastern Mountains Friday
morning.

Area coverage of light precip becomes widespread by Friday
afternoon into Friday evening as that system moves closer to the
region. Most areas will experience <.10" of precip (>85% chance)
with higher values located in the higher peaks Snow levels will
drop to around 5500-6000 feet, resulting in some light mountain
snow for portions of the mountain regions. Not expected to reach a
critical amount of QPF regarding mountain snow (<.10") and any is
expected to last no more than a few hours. A brief break in
precip (especially across portions of the BAsin) is expected in
the early moorings Saturday as the mid-level system passes
through the region.

LONG TERM...Saturday morning through Wednesday...Following the
system from Saturday morning, it will pass to the east heading
into the later part of the weekend. As the system moves east,
wrap-around precip will again bring light rain chances. Chances
for some light mountain snow returns late Saturday
morning/afternoon with snow levels dropping to 5000-5500 feet
(65-75% chance), reserving the chances to the higher peaks in the
mountain regions.

Precip chances decrease significantly region wide heading from
Sunday evening onwards as the trough continues to push east and
have less influence on the overall weather pattern. This is thanks
to the mid-level pattern becoming more zonal orientated, cutting
off moisture advection. Temperatures will start a warming trend
Monday onwards thanks to clearing skies and lack of precipitation.
Will need to monitor how intense temperatures will become moving
forward, but NBM currently advertises highs in the 90s across much
of the Basin by Wednesday. Confidence is currently low to medium
if temperatures reach this high.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  49  78  53  69 /   0   0  10  10
ALW  53  77  56  67 /   0   0  10  20
PSC  49  80  54  74 /   0   0   0  10
YKM  48  80  54  72 /   0   0   0  20
HRI  49  80  55  71 /   0   0   0  10
ELN  47  78  51  66 /   0   0   0  20
RDM  38  75  40  60 /   0   0   0  30
LGD  47  76  50  62 /   0   0  20  30
GCD  46  81  48  63 /   0   0  20  20
DLS  51  76  54  66 /   0   0   0  20

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...None.
WA...&&

$$

SHORT TERM...95
LONG TERM....95
AVIATION...74