Marine Weather Statement for Winthrop Harbor to Wilmette Harbor IL; Wilmette Harbor to Northerly Island IL; Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake +1 more

Official alert brief

The areas affected include... Nearshore Waters from Winthrop Harbor to Northerly Island... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... At 1226 PM CDT, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots and small hail. These thunderstorms were located along a line extending from 16 nm west of Pleasant Prairie to 8 nm southeast of McHenry to 16 nm west of Elgin, moving east at 30 knots.

Instructions

Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. Mariners can expect gusty winds to around 30 knots, locally higher waves, lightning strikes, and heavy downpours. Boaters should seek safe harbor immediately until these storms pass. These strong thunderstorms will likely produce winds to around 30 knots, and could pose a serious hazard for boaters. A special marine warning may eventually be required when these strong thunderstorms reaches the nearshore waters. Boaters should consider heading for shore before these strong thunderstorms arrives.