textproduct: Seattle/Tacoma

SYNOPSIS

Lingering shower activity and breezy winds will continue today as an upper level low continues to move across Oregon. A dry and warmer pattern sets up beginning Thursday and will continue into next week.

LONG TERM /SATURDAY THROUGH WEDNESDAY/

Generally dry and warm conditions continue into the weekend with mostly clear skies across the lowlands and coast. Daytime temperatures over the weekend will peak in the mid 60s along the coast; as for the interior, temperatures will peak in the upper 60s to low 70s. Models do continue to highlight a series of shortwaves moving across area this weekend and into early next week. The Cascades will see increased cloud coverage and the small chance (10- 25%) of light precipitation. Outside of the mountains, conditions are still trending dry. Slightly cooler early next week with high temperatures in the 60s.

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AVIATION

North to northwesterly flow aloft will continue into Thursday as an upper level trough gradually shifts east of the area and an upper ridge remains centered offshore. The air mass is moist and generally stable with widespread low MVFR ceilings. Ceilings will be slow to improve with MVFR persisting from around KPAE southward into late this afternoon or early evening. Low end VFR is expected across far northern interior areas late this afternoon. Residual low level moisture is expected to bring a return of MVFR ceilings across the region tonight into Thursday morning with VFR expected areawide by Thursday afternoon.

KSEA...Ceilings will be slow to improve. MVFR is expected to persist into at least late this afternoon. A small window of low end VFR remains in the forecast for this evening, but confidence in this is moderate at best. There's around a 60% chance of some higher MVFR ceilings on Thursday morning before VFR returns by late morning. Surface winds southerly 8 to 12 knots easing to under 8 knots late tonight.

MARINE

Light onshore flow will turn more northerly or weakly offshore Friday into the early portion of the weekend with broad surface ridging over western Canada and lower pressure over the Pacific Northwest. Ridging weakens early next week with light onshore flow resuming.

Seas will build and steepen over the coastal waters up to 11 to 15 ft, as well as nearing rough bar criteria at Grays Harbor by tonight. Seas will then gradually subside later Thursday into the weekend.

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HYDROLOGY

No river flooding expected in the next seven days.

SEW WATCHES/WARNINGS/ADVISORIES

WA...None. PZ...Small Craft Advisory until 11 AM PDT Thursday for Grays Harbor Bar.

Small Craft Advisory until 8 PM PDT this evening for Puget Sound and Hood Canal.

Small Craft Advisory until 11 AM PDT Thursday for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From Cape Flattery To James Island Out 10 Nm-Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm.