105
FXUS66 KPDT 150509
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
1009 PM PDT Tue Oct 14 2025

Updated Aviation Discussion

.AVIATION...06z TAFs...VFR conditions expected. A bkn-ovc 5-7 kft
cig will linger around DLS for the next few hours, before all
sites see skc for the rest of the period. Winds will be light and
terrain-driven. 74

&&

PREV DISCUSSION... /issued 247 PM PDT Tue Oct 14 2025/

DISCUSSION...Satellite shows a stratus deck overshadowing parts
of the OR Basin through Central OR. This under-forecasted stratus
deck undershot expected high temperatures by around 5 to 10
degrees. Imagery shows some clearing out from the Central OR
through the Southern Blues, but not feeling particularly strong
that it will entirely clear out by early evening hours (60-80%
chance). Freeze warnings have been issued for the Kittitas Valley
through Yakima/Basin/OR Foothills of the Blues. The amount of
effective radiation cooling will be dependent how much the stratus
deck clears out to drop temperatures below freezing. Confidence
is higher in parts of Ellensburg (70-90% chance), but decreases
as we go further south we`re the deck is currently present (60-80%
chance). Temperatures are expected to drop down to the low-30s to
the upper 20s, with colder temps expected in the Ellensburg
region along with any other low lying sheltered valley`s.

A mid-level low pressure system situated in California, will
continue to push eastwards leaving minimal weather impacts as is
makes it way through the Nevada/Idaho/Wyoming region. Our next
weather maker will be through the weekend, as a trough digs
through the Gulf of Alaska, into the PacNW region. This will bring
widespread rain chances with wetting rain rates higher in the
mountain/higher valley areas. Areas such as the Cascade Mountains
will see 1.25 to 1.50 inches (50-70% chance), up to 0.75" in areas
of the Blues (50-70% chance), along with up to a tenth of an inch
in the Basin areas (50-70% chance). Mountain snow showers will be
embedded with this system, with snow levels dropping 4800-5800
feet going into the Sunday afternoon hours. Breezy to windy
conditions will prevail Sunday, with gusts up to 35 mph in places
such as the Cascade Gaps and through the Gorge. Regardless, Sunday
looks to be the windiest across the region as well as the wettest.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  32  57  35  63 /   0   0   0   0
ALW  36  57  39  63 /   0   0   0   0
PSC  30  61  32  63 /   0   0   0   0
YKM  30  63  34  64 /   0   0   0   0
HRI  31  60  33  63 /   0   0   0   0
ELN  20  62  33  62 /   0   0   0   0
RDM  21  58  26  63 /   0   0   0   0
LGD  30  59  30  63 /   0   0   0   0
GCD  31  59  29  63 /   0   0   0   0
DLS  35  65  41  64 /   0   0   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...Freeze Warning until 9 AM PDT Wednesday for ORZ044-507.

WA...Freeze Warning until 9 AM PDT Wednesday for WAZ026>028.

&&

$$

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