544
FXUS66 KPDT 141108
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
408 AM PDT Tue Oct 14 2025

Updated Aviation Discussion

.DISCUSSION...Today through Tomorrow: Current radar and satellite
imagery shows low stratus layer across the Central OR extending
to Northwest Blues with clear skies elsewhere. The northeasterly
flow will take over the PacNW through tomorrow as the upper level
trough begins moving eastward through California and the Four
Corners. Thanks to the ongoing low stratus layer, this will keep
the cold air around the Foothills Blue Mtns-OR in addition to
light winds. Kittitas Valley will also have light winds but with
clear skies. These conditions will promote sub-freezing
temperatures to remain for both aforementioned areas with a Freeze
Warning in effect for until 9 AM PDT this morning. Sub-freezing
temperatures as low as 28 may continue for Kittitas Valley with
Yakima Valley joining in with temperatures as low as 32 degrees
for tomorrow night. The NBM-CONUS favor a 50-70% probability for
Yakima Valley and 60-80% for Kittitas Valley. Additionally, clear
skies and light winds may also assist these temps to drop slightly
lower as well. The Foothills Blues Mtns-OR might have low
temperatures reach to sub- freezing tomorrow night, but confidence
is low (<30%) on the extent.

Thursday through Tuesday: Through Friday, the weather will be quiet,
benign as the PacNW falls under a transition between two systems
Thursday before an upper ridge builds over Friday. Winds will be
relatively light but may become breezy (15-25 mph) Friday during
daytime hours over the Foothills Southern Blues-OR and Kittitas
Valley. Saturday into Monday, we may be seeing an unsettled, wet
pattern returning with light showers and gusty winds (20-30 mph)
as the shortwave trough passes through. Dry conditions will return
Tuesday when an upper ridge approaches the PacNW. Feaster/97

AVIATION...12Z TAFs...Mostly VFR conditions to prevail through the
TAF period. Exceptions will be sites RDM/BDN this morning as CIGS
hover AOA 2kft to 3kft AGL, then breaking by the late morning
hours. Otherwise, CIGs over PDT/ALW will remain around 5kft AGL
through this morning. Winds will be light, 12kts or less, through
the period. Lawhorn/82

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  54  34  58  35 /   0   0   0   0
ALW  54  38  58  38 /   0   0   0   0
PSC  60  33  61  32 /   0   0   0   0
YKM  59  32  63  35 /   0   0   0   0
HRI  57  34  61  33 /   0   0   0   0
ELN  57  27  62  32 /   0   0   0   0
RDM  52  25  59  26 /   0   0   0   0
LGD  57  34  59  30 /  10   0   0   0
GCD  57  31  59  29 /  10  10   0   0
DLS  61  38  66  40 /   0   0   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...Freeze Warning until 9 AM PDT this morning for ORZ507-508.

WA...Freeze Warning until 9 AM PDT this morning for WAZ026-521.

&&

$$

DISCUSSION...97
AVIATION...82