SHORT TERM
Now through Friday...
Upper low pressure off the ORCA (Oregon/Calif) border this am. As of 3 am, still a few showers over far south Lane county, but bulk of the showers are farther to the south and east with better clockwise circulation around the low. Meanwhile, high pressure building from the offshore into Washington and far northern Oregon. As the day progresses, will see the upper low sink farther to the south, with high pressure building into Oregon. With this, will see shower threat come to an end, with clouds gradually giving way to partly to mostly sunny skies. Will be warmer, with temperatures back into the 60s along the coast, and upper 60s to lower 70s across the interior.

Not much change tonight into Friday, as will maintain high pressure offshore. As such, will have variable light to moderate onshore flow.
Overall, rather pleasant late September weather, with patchy fog/low clouds for overnight/early morning hours along with overnight lows mostly in the upper 40s to lower 50s. Days will be quite pleasant, with highs in the 60s along the coast, and lower to middle 70s farther inland. /Rockey

LONG TERM
Saturday through Tuesday...
Forecast confidence remains below normal this weekend into the early part of next week as model solutions continue to diverge significantly with regard to how the upper level pattern evolves.
Ensemble clusters remain just about evenly split in depicting ridging, troughing, and zonal flow regimes over the Pacific Northwest from Saturday through Monday. This obviously will have large implications for the forecast as anything ranging from warm and dry weather to a cooler and wetter pattern remains on the table for days 5-7. This continues to be reflected in the NBM interquartile ranges for temperatures which range anywhere from the upper 60s to the upper 70s between the 25th and 75th percentile guidance. As such, and until models begin to converge on a solution, have opted to stick with the NBM mean which splits the difference between these solutions and depicts broad- brushed chance to slight chance PoPs over the area late this weekend through early next week. /CB

AVIATION
MVFR cigs prevailing across the region with areas of IFR along the coast. An upper level low now off the south Oregon coast continues to track southward today. Light showers wrapping around the low is clipping Lane county as of 09Z Wed. Showers expected to diminish overnight. MVFR is expected (70-90% chance)
to continue through 15Z Wed, then chances begin to decrease with VFR most likely after 18Z Wed. Winds light and variable, becoming northwest 6 to 10 kt with gusts to 15 kt this afternoon. Generally VFR inland overnight into Thursday morning, but can expect some patchy fog, but low MVFR to IFR to return to the coastline 03-05Z Thu.

PDX APPROACHES...MVFR cigs 1500-2500 ft in the area is expected to improve to VFR after 18-19z Wed. Winds light and variable overnight, before becoming northwest 6-8 kt by Wed afternoon.
/mh /DH

MARINE
High pressure returns to the coastal waters today as the system from Tuesday departs to the south. As a result will see northerly winds return today and continue through the week. Winds may gust 20 to 25 kt at times, primarily over the outer zones. The high pressure should weaken over the weekend, as will winds.

Seas around 6 ft today increasing to around 8 ft later tonight into into Thursday, then settling to around 5 ft late in the week.
/mh

PQR WATCHES/WARNINGS/ADVISORIES

OR...None.
WA...None.
PZ...None.