Marine Weather and Tide Forecast for Steilacoom, WA

SHORT TERM /TONIGHT THROUGH TUESDAY/
There are showers across western WA with a trough passing through, and a convergence zone over the central/north sound. The air mass is slightly unstable for a chance of thunderstorms too, especially in the Cascades and convergence zone. Snow levels will be lowering down to 3500-4000' tonight with light snow in the mountains and passes as well.

An upper low tracks overhead on Sunday although shower activity is overall less organized over the lowlands and mainly impacting the Cascades. Temperatures will continue to trend cooler than average with highs around 60.

More wet weather is on its way on Monday as another Pacific frontal system moves in. It'll be breezy too along the coast and north interior. We're under broad troughing and onshore flow on Tuesday for additional showers and ongoing cooler temps. 33

LONG TERM /WEDNESDAY THROUGH SATURDAY/
We're under zonal/westerly flow through the rest of the week with ongoing onshore flow. Weak systems will clip through the area for a chance of showers each day. A ridge starts to build over the weekend for drier and warmer conditions. 33

AVIATION
An upper level trough over the area today will shift east tonight with west to southwest flow aloft becoming northwesterly. A weak upper level ridge will build offshore Sunday.
MVFR ceilings will persist in and around a convergence zone over central Puget Sound with ceilings mostly VFR elsewhere into this evening. Ceilings will lower areawide back to MVFR overnight.

KSEA...Ceilings lift back up to mostly VFR into this evening with a convergence zone persisting just north of the terminal. Generally expecting ceilings to lower back to higher end MVFR overnight.
Surface winds southwesterly 7 to 11 knots this afternoon becoming 10 to 15 knots tonight with some higher gusts. Winds ease Sunday morning. 27

MARINE
Surface high pressure will rebuild over the coastal waters tonight into Sunday. The next frontal system will arrive on Monday.
Another system will follow later Tuesday. High pressure will build over the area Wednesday.

Gale warning for the Central and Eastern Strait continues through tonight. Small craft advisory winds for the remainder of the waters late this afternoon through Sunday morning with the exception of the Puget Sound where converging winds will keep speeds 20 knots or less. Winds ease all waters later Sunday into Monday.

Seas building to near 10 feet over the coastal waters Monday night into Tuesday night behind the system moving through the waters Monday. Felton/27

SEW WATCHES/WARNINGS/ADVISORIES
WA...None.
PZ...Small Craft Advisory until 11 AM PDT Sunday 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-West Entrance U.S. Waters Strait Of Juan De Fuca.

Gale Warning until 5 AM PDT Sunday for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory from 5 PM this afternoon to 5 AM PDT Sunday for Northern Inland Waters Including The San Juan Islands.

Small Craft Advisory until 5 AM PDT Sunday for Admiralty Inlet.