Marine Weather and Tide Forecast for Markham, WA

SHORT TERM /TONIGHT THROUGH SUNDAY NIGHT/
The latest forecast remains on track with no updates this evening. An upper level low remains offshore and will push some high clouds over the interior of western Washington through this evening.

Some increasing light onshore flow will provide some stratus along the coast spreading inland Saturday morning. Stratus should dissipate by the afternoon hours leaving another warm and dry day, with high temperatures warming slightly in the mid to upper 70s with widespread areas of Minor HeatRisk across the interior. Progressing into Sunday, temps will warm even further with areas in the low 80s and mid 80s with areas of Moderate HeatRisk. The warmest areas correlated with Moderate HeatRisk are generally places in the Southwest Interior and areas in the Cascade valleys.

Moderate HeatRisk impacts include those sensitive to the heat and who may be without adequate cooling. Additionally, though it will be warm outside, it is important to remember that area streams, rivers, lakes and the ocean, including Puget Sound, will still have very cold temperatures often around 50 degrees or colder. Please be cautious around colder water despite the air temperatures. Relative humidity also looks to be unseasonably low across western Washington on Sunday. This poses an elevated risk of fire danger primarily among dry grasses or dead and dry vegetation.

LONG TERM /MONDAY THROUGH FRIDAY/
Warm and dry conditions continue on Monday with increased onshore flow, high temperatures will drop, but will still remain warm, in the upper 70s. Temperatures will stay in the low 70s throughout the remainder of the week - with no precipitation expected at this time.

Mazurkiewicz

AVIATION
An upper level low will continue to dig southward tonight, allowing winds aloft to shift from SW to NE. Surface winds easing this evening with most locations settling into light and variable while others such as SEA and PAE retain NW and CLM and HQM favoring more W, with both groups seeing speeds generally 4-8 kts. Predominantly northerly winds Saturday with speeds increasing to 8-15 kts for most terminals by the late morning/early afternoon.

Widespread VFR conditions prevail across much of the area with persistent high clouds, although marine stratus has given rise to MVFR to IFR conditions along the coast. This will push inland overnight but should remain west of PWT and OLM, limiting impacts to forecast terminals. Any invading stratus should retreat again tomorrow morning.

KSEA...VFR through the TAF period with high clouds. NW winds 5-8 kt becoming NE 6 kt or less overnight. Winds tomorrow during the day N 8-15 kt.

18/62

MARINE
The pattern overall remain stable through the weekend into next week with high pressure well offshore and low pressure inland.
Gusty northwesterly winds over the far outer coastal waters will decrease tonight, and a push down the Strait of Juan de Fuca this evening may reach gusts 20-25 kt at times. Inherited headlines covering this look good to expire at 11 PM PDT as general wind trends continue to ease. Otherwise, winds look relatively light until Monday when more robust onshore flow returns and westerly pushes down the Strait in the evenings resume Monday night. Seas remain in the 4-8 ft range through the forecast period.

62/18

HYDROLOGY
No river flooding is expected during the next 7 days.

SEW WATCHES/WARNINGS/ADVISORIES
WA...None.
PZ...Small Craft Advisory until 11 PM PDT this evening for Central U.S. Waters Strait Of Juan De Fuca-Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-East Entrance U.S. Waters Strait Of Juan De Fuca.