808
FXUS66 KPDT 162225
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
225 PM PST Sun Nov 16 2025

.DISCUSSION...The area is situated between a trough and ridge,
allowing for upper southerly winds to bring abundant moisture and
widespread cloud cover into the area. An area of showers coupled
with low to mid level clouds is situated across the Columbia
Basin into the Southern Blue Mountains and Eastern Mountains.
Brief periods of on and off showers continue for parts of Central
Oregon and the Cascade Mountains. Rain showers are expected to
continue going through Tuesday, with some of these showers turning
into mountain snow showers or a rain/snow mix going through the
next 24 to 36 hours. No significant accumulation is expected from
this system.

We`ll receive a brief dry period on Wednesday as a ridge pushes
ashore and amplifies slightly to bring some subsidence conditions
to hinder precip. Clearer skies and weaker winds overnight
Wednesday morning will cool min temperatures below freezing for
much of the area. The coolest temperatures will be located along
Central Oregon with low temps expected to be in the low to mid
20s. Elsewhere will see high 20s to mid 30s. Going through the
rest of the week, slight chance of PoP (20-40%) will continuously
be on and off in the Basin as another shortwave paves its way into
the region, albeit a bit weaker than the current system situated
today. Mountain snow showers will continue to develop with the
heaviest accumulations occurring the Central WA Cascades, with a
secondary regional maxima in the Wallowa Mountains & OR Cascades.
Exact details on QPF amounts are yet to be determined but NBM is
generating up to a foot in some parts of the crests during this
upcoming weekend, followed by up to five inches in the Wallowa`s &
OR Cascades. No immediate highlights expected in the short term,
but a will need to keep an eye on the trend of min temperatures in
the Gorge area for WAZ024 & ORZ041 for possible freezing, giving
the area its seasonal ending freeze if it verifies.


&&

.AVIATION...00Z TAFS...VFR conditions currently across most sites,
with MVFR conditions for KALW and IFR for KDLS/KPDT due to reduced
ceilings of 700 feet and visibilities of 2SM respectively. These
conditions are expected to persist as light rain continues across
all sites associated with a passing system. As a result, widespread
ceilings of 1.5-2.5kft are expected, bringing most sites into MVFR
this evening. Fog is expected to redevelop for KDLS/KALW tonight,
but will improve by mid- to late morning. 75

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  44  57  38  49 /  80  40  30  20
ALW  47  58  42  48 /  90  60  50  40
PSC  44  58  39  52 /  70  20  20  10
YKM  43  57  36  53 /  30  20  20  10
HRI  45  57  40  51 /  70  30  20  10
ELN  40  54  34  47 /  50  30  40  10
RDM  37  55  29  47 /  40  40  10   0
LGD  43  55  37  51 / 100  70  50  40
GCD  42  56  35  51 /  90  50  30  20
DLS  48  57  41  52 /  60  50  20  10

&&

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

$$

SHORT TERM...95
LONG TERM....95
AVIATION...75