Richland, Virginia 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

323
FXUS66 KPDT 121701
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
1001 AM PDT Sat Jul 12 2025

.UPDATED AVIATION...18Z TAFs...VFR conditions will prevail through
the forecast period. Mostly light and variable winds with the
exception of YKM/DLS with each seeing sustained winds of 10-12
kts and DLS seeing gusts to 22 kts. CIGs will remain SKC with the
occasional FEW250 later this afternoon/evening. Bennese/90


&&

.PREV DISCUSSION... /issued 1035 PM PDT Fri Jul 11 2025/

SHORT TERM...Today through Sunday...High pressure is starting to
build over the PacNW and is expected to last through early next
week. Temperatures will gradually trend upward as a result,
peaking on Sunday, with highs up to 105 degrees possible across
the lower Basin (20-25% chance). A Heat Advisory has been issued
for Saturday through Monday for the Basin, Gorge, Yakima/Kittitas
Valleys, and the foothills of the northern Blues. HeatRisk shows
admittedly marginal risk for advisory threshold heat Saturday and
Monday, but with highs wavering around 100 degrees, felt that it
was necessary to broadly advertise the heat through the whole
weekend, even if some days are technically borderline.

Only other concern with high pressure in place will be an uptick in
winds across the Cascade Gaps on Sunday, which will be primarily
thermally-driven. The Kittitas Valley, in particular, may see gusts
up to 40 mph on Sunday afternoon (60-70%). RHs as of now do not look
to reach critical levels, but fire risk will be elevated
nonetheless, given how hot and dry it will be over the weekend.
Evans/74

LONG TERM...Monday through Friday...Models continue to exhibit a
fair amount of disagreement, especially beyond the midweek. One
feature of (relative) certainty is the arrival of a shortwave
trough to our northeast around Tuesday morning. As of now,
guidance keeps us dry from this system, however a slightly more
southward track could bring a chance of slight thunderstorms to
the eastern mountains. Winds are almost certain to shift more
north and easterly as a result of this system tracking as is
currently projected, which may complicate firefighting efforts for
current and future incidents.

Temps look to cool off by Wednesday, however forecast confidence is
low, as ensembles are divided in depicting the synoptic pattern,
differing between a benign zonal flow or bringing in a trough that
could spawn thunderstorms from central Oregon up through to the
eastern mountains. Will have to see how models evolve over
subsequent runs before speaking of the forecast beyond next
Wednesday with too much confidence. Evans/74


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  98  66 101  68 /   0   0   0   0
ALW  97  71  99  71 /   0   0   0   0
PSC  99  66 103  68 /   0   0   0   0
YKM  98  68 101  68 /   0   0   0   0
HRI 100  66 104  69 /   0   0   0   0
ELN  95  69  99  68 /   0   0   0   0
RDM  96  55  98  56 /   0   0   0   0
LGD  93  61  95  63 /   0   0   0   0
GCD  94  60  98  60 /   0   0   0   0
DLS  97  70 101  71 /   0   0   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...Heat Advisory until 8 PM PDT Monday for ORZ041-044-507.

WA...Heat Advisory until 8 PM PDT Monday for WAZ024-026>029.

&&

$$

SHORT TERM...74
LONG TERM....74
AVIATION...90