Celilo, Oregon Weather Forecast Discussion

665
FXUS66 KPDT 011158
AFDPDT
Area Forecast Discussion
National Weather Service Pendleton OR
458 AM PDT Wed Oct 1 2025
.DISCUSSION...
An unsettled weather pattern will continue to push
into the area, with a low pressure embedded with a cold front
moves further onshore. Mid-level overcast clouds started to enter
in the Central Oregon region and will continue to move into the
CWA with showers and isolated thunderstorms (mainly in the
mountain regions). Coverage for showers will be widespread going
into the later afternoon/early evening hours. Chances for some
wetting rains is highest in the Eastern Mountains/Southern Blues
(40-60% chance) and the Cascade Crest/Slopes (60-80% chance).
Places in the Basin will see up to a tenth of an inch over the
next couple of days, but a few spots could see totals exceeding
wetting rain rates in places where the heaviest rain falls.
Regardless of amounts, a cooling trend is expected to persist with
most of the highs dropping to the high 60s to low 70s by the end
of the week. Some of the higher elevated populated areas is
expected to only peak in the mid-60s.
The trough and cold front will continue for the next few days
until eventually crossing over most of the area by Thursday
afternoon/early evening. We`ll see rain chances Wednesday but not
as widespread/as likely as today and Thursday will see chances of
rain secluded to mostly mountainous regions. Weather starts to
dry out as the trough continues to push east with ridging start to
take place. There`s a bit of disagreement between the Euro and
GFS in how they want to handle the passing trough. Euro has the
trough exiting with a weaker shortwave and higher influence of the
ridge, while the GFS is pointing towards the opposite solution
with a stronger trough and weaker ridge. Guidance currently shows
the wetter solutions confining precipitation to the mountain
regions, but will continue to keep monitoring for any changes.
&&
.AVIATION...
/12z TAFs/
Increasing clouds expected throug the morning as a moisture plume
is moving across the Cascades. Another round of showers is
expected in the afternoon as the instability returns, along with
more pronounced southwest to west winds gusting to around 20 knots
at BDN and RDM from around 19 to 22z.
&&
.PRELIMINARY POINT TEMPS/POPS...
PDT  72  49  66  45 /  20  50  30  20
ALW  72  52  67  49 /  20  50  30  20
PSC  72  49  69  44 /  10  50  10   0
YKM  67  43  67  41 /  40  20  10   0
HRI  73  49  68  44 /  10  50  20  10
ELN  64  38  66  39 /  40  30  10   0
RDM  67  38  63  34 /  20  30  20  10
LGD  70  45  64  44 /  20  50  40  30
GCD  69  45  66  41 /  10  30  20  20
DLS  69  50  70  48 /  50  40  20  10
&&
.PDT WATCHES/WARNINGS/ADVISORIES...
OR...None.
WA...None.
&&
$$
SHORT TERM...99
LONG TERM....99
AVIATION...99

NWS PDT Office Area Forecast Discussion