Pasco, Virginia 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

088
FXUS66 KPDT 191640
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
940 AM PDT Thu Mar 19 2026

.KEY MESSAGES...
1. Mountain rain will persist through Friday before transitioning to
   snow

2. Above seasonal average temperatures remain through Friday

3. A system will bring temperatures back to seasonal average Saturday

&&

.DISCUSSION...
Current radar shows a few returns over the WA Cascades as the
remnants of the atmospheric river remain over the area. Current
ground observations show that the last hour these returns have only
put down between 0.01-0.02 inches of rain. Rain is expected to
continue over the mountains through Friday with rain accumulations
nearing 0.4-0.8 inches through 5 AM Friday (70-80% confidence).
Saturday snow levels will begin to drop bringing cooler temperatures
back to the mountains with light mountain snow.

Models show an upper level ridge still over the region. This is what
is bringing the above average seasonal temperatures. In house
comparisons for temperatures shows that temperatures both Thursday
and Friday are anywhere between 20-25 degrees above normal with even
the higher elevations seeing above average temperatures. Models show
the ridge to remain in place through at least Friday ahead of a
pattern change. Temperatures will remain above seasonal average
through Friday with temperatures remaining in the low to mid 70s
across the region with 90-100% of the NBM raw ensembles in
agreement. Friday temperatures will drop only 1-2 degrees with
temperatures remaining in the low to mid 70s for much of the region
with again 90-100% of the raw ensembles in agreement.

Friday night into Saturday models are in good agreement with a weak
upper level trough sweeping into the region with mostly zonal flow.
NBM shows snow levels to begin to decrease as the system moves
across and temperatures will decrease to near seasonal average.
Mountain precipitation is expected with this system with very light
(0.01-0.02 inches) snow accumulations expected (80-90%
confidence)long the crests. Temperatures will decrease by nearly 20
degrees Saturday with localized highs in the low 60s in the Basin
and mid to upper 50s elsewhere (60-80% confidence).  90

&&

.AVIATION /18Z TAFS THROUGH 18Z FRIDAY/...
VFR conditions prevail with mostly dry conditions across all
airport sites. Main issue will be some locally breezy winds at
BDN/RDM and, to a lesser extent, PSC. Expecting breezy 20-30
mph gusts in the Central Oregon sites in the late morning/early
afternoon hours. PSC is not expected to be as windy at 10-20mph
developing in the same time frame. Otherwise, VIS and CIG will
remain in the VFR category.

&&

.FIRE WEATHER...
An SPS is out for elevated fire weather
conditions for Ochoco-John Day Highlands and central OR. A
strong ridge of high pressure has lead to well above average
seasonal temperatures as well as very low relative humidities
(80-90% confidence)for portions of central OR and the eastern
mountains. Additionally, diurnal winds have the capabilities of
reaching 20 to 30 mph gusts (50-70% confidence). The combination
of dry conditions and elevated winds can lead to rapid fire
spread. 90

&&

.Preliminary Point Temps/PoPs...
PDT  75  50  75  45 /   0  10   0  30
ALW  73  55  74  48 /  10  10  10  50
PSC  75  53  75  48 /  10  10   0  20
YKM  73  49  71  39 /  10  20  20  10
HRI  76  51  76  48 /   0  10   0  20
ELN  64  45  62  37 /  20  40  40  10
RDM  78  44  76  41 /   0   0   0  10
LGD  76  48  77  45 /   0   0   0  40
GCD  78  47  78  45 /   0   0   0  10
DLS  74  51  69  45 /  10  20  20  30

&&

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

&&

$$

DISCUSSION...90
AVIATION...95
FIRE WEATHER...90