Biggs Junction, Oregon Weather Forecast Discussion

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FXUS66 KPDT 242202
AFDPDT
Area Forecast Discussion
National Weather Service Pendleton OR
302 PM PDT Wed Sep 24 2025
.DISCUSSION...Today through Saturday: Warm, dry conditions continue
today with the high pressure system over the PacNW. For tomorrow,
model guidance show a shortwave trough strengthening while
approaching across our forecast area. This will give an extra push
on the dry cold front, making the Columbia Basin and Cascade Gaps
drier. This front will also enhance surface pressure gradients,
bringing strong westerly sustained winds up to 20-25 mph with
gusts at 30-35 mph across the aforementioned areas. HREF 00Z and
12Z showed a slight increase in the gusty west winds to account
for the dry front. Daytime RHs remain in the teens and low 20s,
though had to lower them into the low-mid teens for Columbia Basin
and Cascade Gaps for tomorrow. The NBM even favored a 50-90%
probability for overlapped high winds and low RHs. Given the
weather pattern and these conditions potentially affecting nearby
wildfires, this boosted our confidence level (60-90%) to upgrade
our Fire Weather Watches for WAZ690 and ORZ691/703 into Red Flag
Warnings with WAZ691/695 and ORZ701 included for tomorrow. These
warnings will end tomorrow late evening as the front passes. The
upper ridge arrive to the PacNW Friday before flattening Saturday.
Both days will remain dry with relatively light diurnally-driven
winds.
Sunday through Tuesday: Another upper-level wave will arrive Sunday,
bringing slight chances (

NWS PDT Office Area Forecast Discussion