Pasco, Virginia 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

980
FXUS66 KPDT 160951
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
251 AM PDT Wed Apr 16 2025

.SHORT TERM...Today through Friday...

1. Winds across the region Wednesday and again Thursday

2. At or above seasonal temperatures Wednesday and Friday with below
   seasonal temperatures Thursday.

Current nighttime satellite shows some upper level clouds lingering
across the region causing the region to be under partly cloudy
skies. This will aide in allowing overnight temperatures to not drop
nearly as far as they did last night keeping temperatures in the
upper 30s to mid 40s across the entirety of the region.

The biggest highlight through the period will be the winds that will
accompany the upper level low as it continues to clip the far
eastern side of the CWA. Models show that as the upper level low
moves southward, pressure gradients at the surface will tighten
along the eastern mountains as well as along the Cascades. This will
cause an increase in winds both Wednesday and again Thursday. models
show the timing of the winds to be around the late afternoon with 70-
90% of the raw ensembles showing the Yakima Valley and the Grande
Ronde Valley seeing gusts between 25 to 35 mph. 20-45% of the raw
ensembles show the Basin as well as the foothills of the N & S Blues
to see gusts between 23-30 mph today. By tonight, winds will then
increase to 60-90% of the region as a whole will see gusts between
25-30 mph overnight. Winds will settle in the early morning through
the afternoon before ramping back up to 25 mph mainly along the
eastern mountains and through the Grande Ronde Valley with 20-40%
probabilities.

Models show the upper level low to sweep mainly across the eastern
portion of the CWA, however, the low will bend the flow across the
region to a northerly component which will allow for a cooler air
mass to filter across the area. Temperatures today will be 5 to 10
degrees cooler today than yesterday with 50-70% of the ensembles
showing temperatures in the upper 60s to low 70s along the lower
elevations as well as central OR and the Yakima and Kittitas
Valleys. More cold air advection Wednesday night into Thursday will
bring temperatures another 5-10 degrees cooler with 50-80% of the
raw ensembles showing temperature in the low to mid 60s along the
aforementioned areas. Elsewhere, temperatures will be in the low to
mid 50s. Temperatures will then increase to above seasonal
temperatures Friday as the upper level low clears out of the area
allowing for warming to occur. Bennese/90

.LONG TERM...Saturday through Tuesday...A weak trough and cold
front will move across the Pacific Northwest on Saturday and
bring some light QPF to the mountains. This trough will depart the
area Saturday evening. Another trough will drop down from Canada
on Sunday and bring additional light QPF to the mountains into
early Monday. Dry west to northwesterly flow will follow that
system through the end of the extended period.

QPF amounts are generally expected to be no more than a few
hundredths of an inch.

As these troughs work their way across the area, there will be some
breezy conditions both Saturday and Sunday. On Saturday, there will
be gust winds across portions of the Columbia Basin, Gorge, Blue
Mountain Foothills, Cascade Gaps, Simcoe Highlands and Kittitas
Valley.  Winds look to gust in the 25 to 35 mph range.  In most
other areas, winds will gust 15 to 25 mph.  NBm probabilities of wind
gusts >= 25 mph are 80 to 100 percent across a broad swath of the
area, including the aforementioned locations.  NBM probabilities of
wind gust >=39 mph are 60 to 80 percent, with some embedded 90
percent areas in the same locations.


On Sunday, the areal coverage is smaller, though the same general
areas are highlighted.

High temperatures on Saturday will average a few degrees above
normal.  Sunday and Monday will end up a few degrees below normal,
before returning to normal on Tuesday.


&&

.AVIATION...12Z TAFS...VFR conditions are expected through the
period. Winds will gust in the 20 to 25 kt range this afternoon
and evening before decreasing to less than 10 kts overnight.



&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  67  34  61  34 /   0   0   0   0
ALW  65  35  61  37 /   0   0   0   0
PSC  70  35  66  34 /   0   0   0   0
YKM  69  36  66  37 /   0   0   0   0
HRI  70  35  66  34 /   0   0   0   0
ELN  65  34  64  36 /   0   0   0   0
RDM  70  30  61  29 /   0   0   0   0
LGD  62  33  56  32 /   0   0   0   0
GCD  66  32  56  31 /   0   0   0   0
DLS  71  39  69  40 /   0   0   0   0

&&

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

$$

SHORT TERM...90
LONG TERM....77
AVIATION...77