Marine Weather and Tide Forecast for Cohassett Beach, WA

SYNOPSIS
A frontal system continues to move east into the Cascades into tonight. A warm front will boost temperatures as it moves northwards Saturday for brief dry conditions. A potent cold front brings rain and gusty winds Saturday night into Sunday. The active pattern continues at times into next week.

SHORT TERM /TONIGHT THROUGH SUNDAY NIGHT/
A front continues to slowly slide southeast this afternoon, leading to lingering steadier rain across the southern tier of western Washington.
South winds are also slowly tapering off. Peak wind gusts over the last 12 hours generally reached 40 to 60 MPH along the coast, and from Admiralty Inlet northwards. The front will progress east of the Cascades into tonight, resulting in generally drier conditions and lighter winds. A warm front then lifts northwards into Saturday. Although the majority of western Washington will be dry into the afternoon, rain may continue at times along the western Olympic Peninsula. Temperatures will peak in the 60s on Saturday as well in the warm sector.

A potent cold front progresses eastwards Saturday evening into Saturday night across W WA. This will bring a period of steadier rainfall, with rain rates briefly reaching 0.15-0.25" per hour along the front. The more impactful aspect to this system will be the stronger southerly winds associated with the front. Latest REFS guidance suggests a 50-75% chance of gusts exceeding 58 MPH later Saturday (High Wind Warning threshold), with a High Wind Watch remaining in effect. Additional wind headlines may be needed elsewhere with gusts ranging 30 to 45 MPH for most areas Saturday PM into early Sunday. Due to continued foliage on the trees for many locations, localized power outages will be possible. Furthermore, clogged storm drains may occur when the period of gusty winds overlaps with steadier rain Saturday evening. Give yourself extra time if traveling Saturday evening.

Steadier rain transitions to periodic showers on Sunday, with the majority of the QPF focused on the North Cascades and Olympics. Snow levels around 7500 feet through Saturday night fall to near 4500 feet on Sunday for high elevation mountain snowfall. By Sunday, the primary concern shifts to high surf conditions along the coast. Seas build to 20 to 28 feet on Sunday, resulting in large breaking waves along the coast. A High Surf Advisory has been issued, and will need to monitor the need for a High Surf Warning over the next day as periods approach 15 to 17 seconds. Caution should be used when in or near the water, especially those who will be participating in razor clam digging. High temperatures cool into the 50s by Sunday.

LONG TERM /MONDAY THROUGH FRIDAY/
A brief shortwave ridge builds over the Pacific Northwest Sunday night into Monday for drier conditions. The next warm front quickly approaches Monday afternoon for additional rain and locally breezy conditions late Monday through Monday night. Ensembles suggest a steady plume of moisture then becomes focused over Vancouver Island and Western Washington on Tuesday for additional rainfall, warmer temperatures, and breezy conditions. At this time the heaviest QPF amounts are focused over the Olympics and North Cascades.
Uncertainty increases on Wednesday as ridging builds over the interior Rockies with troughing offshore. This will continue to result in continued warmer temperatures, with the highest probability for rainfall over the Olympics. More widespread rainfall chances return Thursday into late week. JD

AVIATION
Mixed bag of flight conditions across western Washington this evening, with some inland terminals seeing ceilings lifting to low end VFR and other terminals in IFR low clouds as rain showers continue to move east. Ceilings should gradually improve later this evening as rain pushes into Eastern Washington to low-end VFR for the majority of terminals. However, terminals along the coast, Kitsap Peninsula, and southern interior may struggle to improve and may not see improvement until Saturday afternoon. Breezy southerly winds possible through this evening with gusts 20-25 kt possible.
Winds will ease tonight for light to calm winds in the interior.

A strong frontal system will impact Western Washington starting Saturday afternoon. While the impacts to the interior are expected to arrive after the 00Z TAF issuance, impacts will start to be felt along the coast in the afternoon as early as 21Z. Southwesterly winds will increase after 21Z and will approach gusts of 35-40 kt towards Sun 00Z, with rain reaching the coast after Sun 01Z.

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KSEA...VFR conditions expected to prevail through much of Saturday before a strong weather system arrives. Breezy winds 10-13 kt with gusts up to 25 kt throughout tonight. Winds will ease overnight to 3- 5 kt. A strong frontal system will bring gusty winds to the terminal after Sun 02Z with sustained speeds of 12-15 kt and gusts 30-35 kt.
Rain looks to arrive after Sun 04Z.

MARINE
An active marine pattern will continue into next week as a series of frontal systems impact area waters. A frontal system earlier today has brought elevated seas and winds. Seas will remain elevated above 10 feet and a Small Craft Advisory will follow once gale-force winds subside for the coastal waters and West Strait.

A stronger frontal system is expected Saturday afternoon into Sunday morning. This system will bring a plethora of hazards to area waters, including elevated seas and winds. With high-res guidance continuing to indicate a 70% chance or higher of seeing storm-force winds over the coastal waters, the Storm Watch has been upgraded to a Storm Warning. Gale Watches remain in effect for the interior waters. Seas are expected to build over 20 feet late Saturday night into Sunday, with seas building towards 28 feet in the outer coastal waters. Seas will gradually decrease towards Sunday night into Monday, but will remain above 10 feet.

Weak high pressure will briefly build over the waters on Monday.
However, the next frontal system arrives in the evening, followed by multiple systems that will pose additional marine hazards to area waters.

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HYDROLOGY
River flooding is not expected through the next seven days. However, multiple weather systems will bring steadier rainfall at times today, late Saturday into Sunday, and again late Monday into midweek. While current forecasts are not expected to cause flooding, this will begin to saturate soils and raise base flows that could bring a concern with subsequent storms systems, particularly by late next week.

SEW WATCHES/WARNINGS/ADVISORIES
WA...High Wind Watch from Saturday afternoon through late Saturday night for Grays Harbor County Coast-Northern Washington Coast.

High Surf Advisory from 4 AM to 10 PM PST Sunday for Grays Harbor County Coast-Northern Washington Coast.

PZ...Small Craft Advisory until 4 AM PST Sunday for Grays Harbor Bar.

Small Craft Advisory until 10 AM PST Saturday 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 Watch from Saturday morning through Sunday morning for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca-West Entrance U.S.
Waters Strait Of Juan De Fuca.

Small Craft Advisory until midnight PST tonight for Central U.S. Waters Strait Of Juan De Fuca.

Gale Watch from Saturday afternoon through Sunday afternoon for Admiralty Inlet-Northern Inland Waters Including The San Juan Islands.

Small Craft Advisory until 11 PM PST this evening for Puget Sound and Hood Canal.

Gale Watch from Saturday afternoon through Sunday morning for Puget Sound and Hood Canal.

Storm Warning from 10 AM Saturday to 10 AM PST 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.