textproduct: Portland

LONG TERM...Wednesday through Sunday

Confidence remains high heading into the latter half of the week and into the weekend. Cluster analysis is heavily favoring troughing over the PacNW and western Canada with several embedded impulses reinforcing this pattern for several days. Temperatures continue to trend downward into the weekend. Models continue to show only weak signals for precipitation with a chance coming on Thursday as a front moves through the area and a better shot on Saturday as a slightly stronger front is expected. Beyond Saturday, the upper level pattern begins to flatten out and temperatures warm back into the 80s. -19

AVIATION...Through 12Z Wednesday

Southerly winds have brought marine stratus along the coast, supporting IFR/LIFR CIGs. These southerly winds will also enable marine stratus to infiltrate into the southern Willamette Valley resulting in MVFR conditions at KEUG starting around 12Z-14Z and lasting through 18Z or so. Stratus along the northern Oregon and southern Washington coast may breakout this afternoon, supporting a brief period of VFR conditions around KAST. CIGs around KONP are likely to remain IFR or lower through the TAF period.

VFR conditions are expected through most of the TAF period for all other locations. Light winds overnight becoming southerly 5-10 kt 12Z-20Z. Also, could see some gusty southerly winds starting along the coast around 16Z-20Z with gusts approaching 25 kt. These gusts are expected to persist through at least the remainder of the TAF period. A stronger marine push is expected late tonight and could make it to most inland terminals early Wednesday morning, bringing MVFR or lower CIGs. Chances are 25-50% after 9Z Wednesday.

KPDX AND APPROACHES...VFR conditions today with southerly winds increasing to 5-7 kt. A stronger marine push tonight could bring a period of sub-VFR CIGs into early Wednesday morning. -19/42

MARINE

Winds shift to the south as a weak disturbance passes over the region. Winds across much of the waters expected to be 5-15 kt with gusts up to 20 kt within 20 nm of the coast. The notable exception will be the inner waters north of Cape Falcon north to Cape Shoalwater where winds are expected to be 15-20 kt with gusts to 25 kt late this morning through the evening. A Small Craft Advisory has been issued for zone PZZ251 and the Columbia River Bar from 10 AM to 7 PM today. Isolated SCA criteria gusts are possible outside the advisory.

The next pattern shift looks to occur Thursday night into Friday, when troughing moves into the Pacific Northwest. This will bring a return to northwesterly flow with low to moderate chances for light rain showers. Seas otherwise continue at 3-6 ft through this weekend. -19/36

PQR WATCHES/WARNINGS/ADVISORIES

OR...None.

WA...None.

PZ...Small Craft Advisory from 10 AM this morning to 7 PM PDT this evening for PZZ210-251.