480
FXUS66 KPDT 060507
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
1007 PM PDT Sun Oct 5 2025

.Updated for Aviation...


.AVIATION...
06Z TAFS...Quiet weather with VFR conditions and light winds,
generally less than 10 kts are expected through the TAF period.

&&

.PREV DISCUSSION... /issued 430 PM PDT Sun Oct 5 2025/

Updated for Aviation...

AVIATION...
00Z TAFS...VFR conditions and winds less than 10 kts are expected
through the TAF period.

PREV DISCUSSION... /issued 312 PM PDT Sun Oct 5 2025/

DISCUSSION...Current satellite and radar imagery show generally
clear skies across the forecast area with few to scattered cumulus
clouds over eastern OR and Central OR. The upper-level northerly
wave continues eastward today as the ridge builds over to the PacNW
tomorrow through Tuesday. This transitional pattern will give us
quiet benign weather with clear, sunny skies for the next couple of
days. However, Freeze Warnings will remain in effect tonight through
Monday morning for Central OR, Grand Ronde Valley, John Day Basin,
and Wallowa County with clear skies and light winds assisting in
radiational cooling. This pattern will also slightly enhance the
surface pressure gradients, which promotes northeasterly breezy
winds (15-25 mph) during afternoon and evening hours across the
Cascade gaps today before shifting more easterly Monday for the same
areas and eastern OR Tuesday. Daytime RHs will trend downward to the
20s and 30s across majority of the forecast area until Tuesday when
it further drops to the upper teens over John Day Highlands.
Overnight recoveries will mainly be good to excellent (55-100%).

The upslope flow will then bring showers along the crest of WA/OR
Cascades starting Wednesday afternoon, thanks to the low pressure
system over the OR coast. As the upper level trough gradually moves
closer to the PacNW, this could bring shower chances over the
Cascade gaps Thursday before becoming widespread Friday onward.
Winds will be relatively light with occasional breezes, though
they might get gusty at 20-30 mph over the weekend with a low
chance (15-30%). Feaster/97

AVIATION...18Z TAFS (Previous Discussion)...VFR conditions
currently across all sites, which will stay the course through the
period. Ceilings will continue to clear for those sites that are
still experiencing lingering clouds. Breezy 10-15kt winds expected
for KRDM/KBDN this afternoon, but light winds staying below 8 kts
for all remaining terminals. 75

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  39  69  40  74 /   0   0   0   0
ALW  42  69  44  74 /   0   0   0   0
PSC  37  70  37  73 /   0   0   0   0
YKM  39  70  41  72 /   0   0   0   0
HRI  38  70  38  74 /   0   0   0   0
ELN  36  68  37  70 /   0   0   0   0
RDM  27  68  31  74 /   0   0   0   0
LGD  34  67  36  71 /   0   0   0   0
GCD  32  69  36  73 /   0   0   0   0
DLS  44  74  44  76 /   0   0   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...Freeze Warning until 10 AM PDT Monday for ORZ049-050-505-511.

WA...None.
&&

$$

SHORT TERM...97
LONG TERM....97
AVIATION...77