Marine Weather and Tide Forecast for Lynden, WA

SHORT TERM /TONIGHT THROUGH FRIDAY/
Light post-frontal convergence zone showers and patchy fog will persist through the afternoon over King and Snohomish Counties before activity tapers off this evening with dry and cloudy conditions elsewhere. Highs today across western Washington are on track to peak in the 50s and low 60s.

A high pressure ridge will continue to amplify into the Pacific Northwest into Wednesday, with dry and mostly sunny conditions returning once the morning low stratus layer burns off.
Temperatures will peak in the upper 50s along the coast and in the 60s further inland.

High pressure will continue to build over western Washington on Thursday, with steadily increasing temperatures and clear skies.
Highs will peak in the upper 60s along the coast, with temperatures in the upper 70s across the interior. Some areas along the Cascade foothills and valleys may reach the low 80s. The lowlands will be warm enough for widespread Minor (Yellow)
HeatRisk.

The upper ridge axis will shift eastward on Friday as a trough approaches the coast. Southerly flow aloft will keep warm temperatures in place east of the Puget Sound, with Minor HeatRisk continued for these areas. A frontal system and associated band of rainfall will approach the Pacific Coast by mid-afternoon Friday, spreading inland late Friday into Saturday morning. Forecast models continue to trend this system slower, and it may arrive closer to Saturday morning.

LONG TERM /SATURDAY THROUGH TUESDAY/
The trough will split apart as it moves inland on Saturday, resulting in light rainfall amounts across western Washington. Split flow will develop over the region through the rest of the weekend, with lingering light shower activity possible. While operational models show a ridge developing overhead by the end of the weekend, ensembles maintain a chance of showers across the region into early next week.

15

AVIATION
A shortwave trough has pushed this morning's frontal system east of the Cascades this afternoon. There remains post frontal convergence showers in northern King/Snohomish Counties.
MVFR ceilings continue in Puget Sound/Cascades, and pockets of the coast and Strait of Juan de Fuca this afternoon, where cloud coverage is thicker. Some mist down to 3 SM is still being observed with the showers. Outside of these areas, partial clearing has taken place with a few pockets of sun, and CIGs improving to VFR. The CIGs have been slower to climb (compared to guidance), which has been reflected in TAFs going into the afternoon (some Puget Sound terminals may struggle to reach VFR until the convergence zone dissipates around 01-04Z. Regardless, a good marine push will bring more MVFR region-wide Wednesday morning (IFR/LIFR in Kitsap area), with complete clearing expected after 18-21Z Wednesday. Winds post- front have turned more west-northwest in most areas at 5 to 10 kt (few gusts observed up to 20 kt along the coasts). They will decrease to 5 kt tonight (becoming variable in some spots), before increasing to 4 to 8 kt from the north Wednesday.

KSEA...Post-frontal convergence zone continues to produce showers in and near terminals - expected to continue through 01-04Z this evening. CIGs remain MVFR, with expectation for improvement to lower- end VFR as soon as 01Z Wednesday. Additional MVFR CIGs are expected early through late Wednesday morning, with clearing taking place after 18-21Z. Winds WNW at 5 to 10 kt this afternoon will become northerly next few hours into the evening, becoming less than 5 kt tonight out of the NE, and N at 4 to 8 kt by 18Z Wednesday.

HPR

MARINE
A trough went through the waters earlier this morning with a frontal system. The flow will become more onshore with west to northwest winds post-front. There is a strong push going through the central and east sections of the Strait of Juan de Fuca, with gusts up to 27 kt observed at nearby Port Angeles. The small craft advisory continues in these areas through Wednesday morning. Weather will clear out as a ridge builds off the coast Wednesday into Friday, with a trough passing through next weekend. The threat for any hazardous winds is low at this time with this trough.

Seas currently are 6 to 7 feet at 9 with periods at 9 seconds - will drop to 4 to 5 feet Wednesday and Thursday, and increase to 6 to 8 feet next weekend with the trough moving through, decreasing back to 5 to 6 feet next week Monday.

HPR

HYDROLOGY
No river flooding expected over the next 7 days.

SEW WATCHES/WARNINGS/ADVISORIES
WA...None.
PZ...Small Craft Advisory until 5 AM PDT Wednesday for Central U.S.
Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.