Teanaway, Washington Weather Forecast Discussion

520
FXUS66 KPDT 302058
AFDPDT
Area Forecast Discussion
National Weather Service Pendleton OR
158 PM PDT Tue Sep 30 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...18Z TAFs...Another round of rain will start tonight,
with showers and an occasional thunderstorm. Widespread rain will
be in the Central OR/Cascade Crest areas, with more scattered and
isolated in the Basin area. Could reach some 5000 feet overcast
decks, with possible sub-VFR decks rolling in areas of the heavier
showers (5-15% chance). Wind will be gustier near Central OR in
RDM/BDN with up to 15-25 knots of gusts when the system starts
pushing through. The highest gusts is forecasted in the later
afternoon/early evening hours today.
&&
.PRELIMINARY POINT TEMPS/POPS...
PDT  51  72  48  67 /  30  40  50  20
ALW  55  72  51  67 /  30  40  50  20
PSC  51  72  48  70 /  20  20  30  10
YKM  46  67  42  67 /  50  40  20  10
HRI  51  72  48  70 /  30  20  40  10
ELN  42  65  38  65 /  50  40  20  20
RDM  42  67  38  65 /  60  30  30  20
LGD  45  70  46  65 /  40  40  50  30
GCD  45  69  44  65 /  40  20  30  20
DLS  52  70  50  70 /  80  60  30  20
&&
.PDT WATCHES/WARNINGS/ADVISORIES...
OR...None.
WA...None.
&&
$$
DISCUSSION...95
AVIATION...95

NWS PDT Office Area Forecast Discussion