Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region
Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >
| NWS Forecast for: Waters From James Island To Point Grenville 10 To 60 Nm (PZZ173) Issued by: National Weather Service Seattle, WA Last Update: 214 PM PDT Sat Apr 18 2026 |  |
| Tonight: SE wind 10 to 15 kt, easing to 5 to 10 kt late. Seas 4 to 6 ft. Wave detail: S 5 ft at 9 seconds and S 2 ft at 15 seconds. A slight chance of rain this evening, then a chance of rain after midnight. Sun: NE wind 5 to 10 kt. Seas 4 to 5 ft. Wave detail: SW 5 ft at 8 seconds, W 2 ft at 12 seconds and S 2 ft at 15 seconds. Sun Night: NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave detail: SW 5 ft at 9 seconds and W 5 ft at 13 seconds. Mon: NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave detail: N 2 ft at 4 seconds, SW 4 ft at 8 seconds and W 5 ft at 12 seconds. Mon Night: SW wind 5 to 10 kt. Seas around 5 ft. Wave detail: SW 3 ft at 8 seconds and W 4 ft at 9 seconds. Tue: SW wind 5 to 10 kt. Seas 5 to 6 ft. Wave detail: SW 3 ft at 8 seconds, NW 4 ft at 9 seconds and W 4 ft at 17 seconds. A chance of rain. Tue Night: W wind 10 to 15 kt. Seas 6 to 7 ft, building to 7 to 10 ft after midnight. Wave detail: S 2 ft at 7 seconds, NW 7 ft at 9 seconds and W 10 ft at 14 seconds. A chance of rain. Wed: NW wind 15 to 20 kt. Seas 9 to 13 ft, building to 11 to 15 ft in the afternoon. Wave detail: NW 2 ft at 5 seconds and NW 14 ft at 11 seconds. Wed Night: NW wind 10 to 15 kt. Seas 10 to 14 ft. Wave detail: NW 13 ft at 12 seconds. Thu: NE wind 5 to 10 kt, veering to SW in the afternoon. Seas 9 to 11 ft, subsiding to 7 to 9 ft in the afternoon. Wave detail: NW 10 ft at 11 seconds. Thu Night: NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave detail: NW 4 ft at 8 seconds and NW 7 ft at 11 seconds. | |
| Zone Forecast: Waters From James Island To Point Grenville 10 To 60 Nm (PZZ173) | |
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