Don’t let those sunny conditions fool you. Thursday’s brisk wind brought on another cold-water upwelling along some Lake Michigan beaches. Earlier today, the water temperatures at a handful of the most popular state park beaches had plummeted into the 50s.

Here's what we know. The NWS issued a Beach Hazard statement in Lake, Northern Cook and Central Cook Counties through Friday morning. High wave action and dangerous currents are expected at Lake Michigan beaches with 4-7-foot waves.

Lake Michigan faces high waves and dangerous currents, prompting swimming warnings along Illinois, Indiana, and Michigan beaches.

Northerly winds are creating potentially dangerous swimming conditions with waves reaching 7 feet at beaches in Mason, Oceana, Muskegon, Ottawa, Allegan and Van Buren counties.

Dangerous swimming and boating conditions were expected Thursday and Friday at all Lake Michigan beaches across Illinois, Indiana and Michigan, with winds up to 20 miles-per-hour and waves as high as seven feet,