Unsettled Across the West; Increasingly Rainy with a Few Storms in the South

A frontal system will bring heavy precipitation, including mountain snowfall to much of the Pacific Northwest, northern California, and portions of the Rockies through Tuesday. Elsewhere, wet weather will return to much of the South with locally heavy rainfall; a few strong to severe thunderstorms will also be possible in this region by Tuesday.
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Coastal Waters Forecast for Winthrop Harbor to Wilmette Harbor IL (LMZ740) (Text-Only)
NWS Forecast for: Winthrop Harbor to Wilmette Harbor IL (LMZ740)
Issued by: National Weather Service Chicago, IL
Last Update: 251 PM CST Mon Dec 18 2017




Tonight: Southwest winds increasing to 20 to 25 kt. Partly cloudy. Waves 1 to 3 ft building to 2 to 4 ft in the late evening and overnight.

Tuesday: West winds 20 to 25 kt diminishing to 10 to 20 kt in the afternoon. Mostly sunny. Waves 1 to 3 ft.

Tuesday Night: Northwest winds 10 to 20 kt. Mostly clear. Waves 1 to 3 ft building to 2 to 4 ft after midnight.

Wednesday: North winds 10 to 20 kt becoming northeast 5 to 10 kt in the afternoon. Partly sunny. Waves 2 to 4 ft.



Zone Forecast: Winthrop Harbor to Wilmette Harbor IL (LMZ740)

Visit your local NWS office at: http://www.crh.noaa.gov/lot