Marine Weather and Tide Forecast for Marrowstone, WA

SHORT TERM /TODAY THROUGH FRIDAY/
While a majority of shower activity has tapered off early this morning, steady convergence zone showers continue over the Puget Sound and eastward over King and Snohomish Counties. Showers will slowly taper off throughout the morning across western Washington, with low stratus making for another cool and damp morning. Conditions will dry out throughout the day, but cloudy skies will limit temperatures into the upper 50s to mid 60s.

A trough axis will shift inland later this evening, spreading another round of light showers eastward. While a majority of the moisture associated with this system will stay to our south, areas generally south of the Puget Sound and over the Cascades will see some light rain accumulations late Thursday into Friday. Showers will taper off over the Cascades by Friday evening as zonal flow develops aloft, with temperatures returning to near-normal in the mid to upper 70s for most interior lowlands.

LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/
A high pressure ridge building over the western US will amplify northward on Saturday and Sunday, allowing for warmer and drier weather to settle into western Washington. Sunday is on track to be the warmest day of the period, with temperatures peaking in the upper 70s across the interior lowlands. Areas along the Cascade foothills and valleys could see highs once again in the lower 80s.

Forecast models continue to show large differences heading into early next week, with potential for a frontal system to bring showers and cooler conditions to the region as early as Monday.
However, this will depend on how persistent the ridge stays into early next week. A chance of showers has been maintained through Tuesday with continued above-normal temperatures.

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AVIATION
Northwesterly flow will persist aloft today before gradually transitioning to more southwesterly tonight into Thursday as a weak upper level trough swings across the region.

A mix bag of ceilings this morning across Western Washington. Some light showers this morning over Puget Sound terminals as a convergence zone continues to weaken, bringing lower ceilings.
Showers will continue to taper off throughout the morning hours across the region, with ceilings expected to rebound back for all Puget Sound terminals into VFR around 18-20z. Conditions expected to remain VFR through the remainder of the day for all terminals.

Southerly surface winds at 4-7 kt for interior terminals will transition to northerly at 4-9 kt, likely between 17-20z.

KSEA.. MVFR this morning as a convergence zone continues to weaken.
Improvement into VFR expected by late morning (17z-20z). VFR conditions expected to persist through the remainder of the day.
S/SW surface winds persisting at 4-7 kt this morning will transition to N/NW between 17z-19z, increasing this afternoon to 7-10 kt.

14/29

MARINE
High pressure over the area waters this morning will weaken slightly as a surface low tracks towards Oregon/N California today. Winds will ease through the morning hours, with a slight uptick in northwesterlies (10-15 kt) expected across the coastal waters this afternoon. Seas across the coastal waters remain between 7-9 ft this morning and will continue to fall to 4-6 ft throughout the day.

High pressure will build back into the area waters on Thursday and remain the dominant influence across the waters through the weekend.
This will continue to promote northwesterlies across the coastal waters and diurnal onshore pushes through the Strait of Juan de Fuca at times over the next few days. A weak front does look to approach the region on Friday, but looks to dissipate before reaching the area waters for no significant impacts at this time. The next frontal system looks to move into the area waters by early next week. Seas across the coastal waters will persist at 4-6 ft into early next week.

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SEW WATCHES/WARNINGS/ADVISORIES
WA...None.
PZ...None.