996
FXUS66 KPDT 302114
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
214 PM PDT Sat May 30 2026

.KEY MESSAGES...

- Warming temperatures through midweek.

- Dry conditions for much of the week, with the potential for
  mainly mountain showers and thunderstorms around midweek.


&&

.DISCUSSION...
A more zonal flow is expected to develop over the region as an
upper low over the northern Rockies moves northeast. By Sunday,
a weak upper low will move over the area, but is expected to be
dry. This low will then help carve out a broader trough that
will shift eastward with the upper low moving to northern
Montana/southern Canada by Monday night. Can`t rule out a
passing shower with the low, especially over the mountains, but
overall chances are low (<20 percent).

As this low spins to the northeast, weak ridging will build in
for Tuesday. A weak trough and some shortwave energy will then
move across the region Wednesday into Thursday. With this
feature will come the best chances for precipitation and
thunderstorms in the next 7 days. Thunderstorm chances, although
low (<20 percent) look to be highest over the mountains of
central and eastern Oregon).

Dry and a bit cooler weather returns for Thursday and Friday.
By Saturday, precipitation may start to return, especially to
the Cascades as an upper low off the coast approaches the
region. There is still some uncertainty with the timing of this
system, and we are a week away but it will bear watching.
Additionally, depending on the track and timing, winds may begin
to increase as early as Friday, or into Saturday across
portions of the area.

&&

.AVIATION /18Z TAFS THROUGH 18Z SUNDAY/...
VFR conditions will persist through the forecast period for all
sites except BDN. BDN will see a few hours of MVFR due to low
clouds lingering over the site, these should dissipate after
22Z. DLS/PDT/RDM/BDN/YKM will all see breezy winds through the
period of 10-15 kts with gusts between 20-30 kts. Winds at these
locations will settles after 06-07Z. All other sites will be
below 10 kts. 90

&&

.Preliminary Point Temps/PoPs...
PDT  42  71  44  76 /   0   0   0   0
ALW  47  72  49  77 /   0   0   0   0
PSC  43  77  47  81 /   0   0   0   0
YKM  42  77  47  80 /   0   0   0   0
HRI  43  74  46  80 /   0   0   0   0
ELN  39  71  44  75 /   0   0   0   0
RDM  29  66  34  73 /   0   0   0   0
LGD  37  68  39  73 /   0   0   0   0
GCD  34  69  37  75 /   0   0   0   0
DLS  45  76  49  82 /   0   0   0   0

&&

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

&&

$$

DISCUSSION...77
AVIATION...90