Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

For More Weather Information:

Seattle, WA Local Forecast Office

20NM SW Seattle WA

Marine Point Forecast

[NOTICE]

Monday
SW 13kt
< 1ft
Monday Night
SW 14kt
< 1ft
Tuesday
SSW 20kt
< 1ft
Tuesday Night
SSW 22kt⇓
< 1ft
Wednesday
SW 9kt
< 1ft
Wednesday Night
WNW 8kt⇓
< 1ft
Thursday
⇑SW 7kt
< 1ft
Thursday Night
SW 6kt⇓
< 1ft
Friday
Light Wind
< 1ft

Associated Zone Forecast which includes this point

Last Update: 11:27 pm PDT Apr 12, 2026
Forecast Valid: 3am PDT Apr 13, 2026-6pm PDT Apr 19, 2026

View Nearby Observations

Detailed Forecast

Monday

SW wind around 13 kt. A chance of rain, mainly between 10am and 3pm. Waves 1 ft or less.

Monday Night

SW wind around 14 kt. A chance of rain, mainly after 4am. Waves 1 ft or less.

Tuesday

SSW wind 14 to 20 kt. Rain. Waves 1 ft or less.

Tuesday Night

SSW wind 17 to 22 kt decreasing to 10 to 15 kt after midnight. Rain, mainly before 11pm. Waves 1 ft or less.

Wednesday

SW wind 6 to 9 kt. Rain before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. Waves 1 ft or less.

Wednesday Night

WNW wind 5 to 8 kt becoming variable and less than 5 kt in the evening. Showers likely and possibly a thunderstorm before 8pm, then rain likely between 8pm and 11pm. Waves 1 ft or less.

Thursday

Variable winds less than 5 kt becoming SW 5 to 7 kt in the afternoon. Mostly sunny. Waves 1 ft or less.

Thursday Night

SW wind around 6 kt becoming variable and less than 5 kt in the evening. Partly cloudy. Waves 1 ft or less.

Friday

Variable winds 5 kt or less. Partly sunny. Waves 1 ft or less.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.