Copple Butte Trail, Oregon Weather Forecast Discussion

810
FXUS66 KPDT 151753
AFDPDT
Area Forecast Discussion
National Weather Service Pendleton OR
1053 AM PDT Mon Sep 15 2025
.Updated Aviation Discussion.
.AVIATION...18z TAFs...VFR conditions currently across all sites,
which will stay the course through the period. Winds will stay
light and below 10 kts for most sites, with the exception of
KRDM/KBDN/KDLS experiencing gusts up to 20-25 kts toward the end
of the period. KRDM/KBDN will also experience gusts up to 20 kts
late this afternoon before dissipating this evening. SCT-BKN
ceilings of 20-25kft will build in this evening and overnight as a
system approaching from the south. 75
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PREV DISCUSSION... /issued 119 PM PDT Sun Sep 14 2025/
DISCUSSION...Satellite imagery reveals a negatively tilted
trough over the Pacific Northwest. The trough`s attendant cold
front passed across the forecast area overnight through this
morning, and is now tracking east into the northern Rockies.
Widespread cumulus has developed in the weakly unstable post-
frontal environment, though most updrafts are still shallow (

NWS PDT Office Area Forecast Discussion