FLUS43 KMKX 181912 HWOMKX Hazardous Weather Outlook National Weather Service Milwaukee/Sullivan WI 212 PM CDT Mon May 18 2026 WIZ046-047-051-052-056>060-062>072-191915- Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee- Lafayette-Green-Rock-Walworth-Racine-Kenosha- 212 PM CDT Mon May 18 2026 This Hazardous Weather Outlook is for portions of east central Wisconsin, south central Wisconsin and southeast Wisconsin. .DAY ONE...Tonight A round of scattered thunderstorms is expected again late tonight. Gusty winds will be the main hazard. .DAYS TWO THROUGH SEVEN...Tuesday through Monday A final round of thunderstorms is possible on Tuesday with just a marginal threat of severe storms in far southeast Wisconsin. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed today or tonight. $$ LMZ643>646-191915- Sheboygan to Port Washington WI- Port Washington to North Point Light WI- North Point Light to Wind Point WI- Wind Point WI to Winthrop Harbor IL- 212 PM CDT Mon May 18 2026 This Hazardous Weather Outlook is for the nearshore waters from Sheboygan Wisconsin to Winthrop Harbor Illinois. .DAY ONE...Tonight A Small Craft Advisory is in effect north of Port Washington for high waves. The rest of the nearshore zones will have Small Craft Advisories later tonight for increasing winds and waves. There is a chance for thunderstorms with gusty winds late tonight. .DAYS TWO THROUGH SEVEN...Tuesday through Monday Chances for thunderstorms continue on Tuesday. A Small Craft Advisory continues through Tuesday. $$ LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868- 870-872-874-876-878-191915- Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.- Lake Michigan from Seul Choix Point to Rock Island Passage 5NM offshore to Mid Lake- Lake Michigan South of a line from Seul Choix Point to the Mackinac Bridge and North of a line from Charlevoix MI to South Fox Island 5NM offshore- Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to mid lake- Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake- Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake- Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to Mid Lake- Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake- Lake Michigan from Sheboygan to Port Washington WI 5NM offshore to Mid Lake- Lake Michigan from Port Washington to North Point Light WI 5NM offshore to Mid Lake- Lake Michigan from North Point Light to Wind Point WI 5NM offshore to Mid Lake- Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM offshore to Mid Lake- Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake- Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake- Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid Lake- Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake- Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake- Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid Lake- Lake Michigan from South Haven to Holland MI 5NM offshore to Mid lake- Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake- 212 PM CDT Mon May 18 2026 This Hazardous Weather Outlook is for the open waters of Lake Michigan. .DAY ONE...Tonight Areas of fog, possibly dense will continue over the northern half of the lake. Breezy south winds will develop, while scattered thunderstorms are also expected late tonight primarily across the southern half of the lake. .DAYS TWO THROUGH SEVEN...Tuesday through Monday Breezy south winds and chances of thunderstorms continue into Tuesday. $$ www.weather.gov/mkx