Active Weather Alerts
Special Marine Warning
Issued: 2:04 AM Apr. 14, 2026 – National Weather Service
...SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 10 PM CDT... For the following areas... Nearshore waters from Washington Island to Two Rivers... Open waters of Lake Michigan from Rock Island Passage to Two Rivers... At 904 PM CDT, strong thunderstorms were located along a line from 11 NM northwest of Algoma to 6 NM southwest of Denmark, or along a line from 11 NM northeast of Bay Shore Park to 14 NM northwest of Manitowoc, moving east at 15 knots. HAZARD...Wind gusts to 40 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Sturgeon Bay Ship Canal Light, Whitefish Point, Kewaunee Pierhead Light and Rawley Point Light. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Move to safe harbor immediately as gusty winds and high waves are expected. && MAX HAIL SIZE...<.75 IN; MAX WIND GUST...40 KTS
Small Craft Advisory
Issued: 10:45 PM Apr. 13, 2026 – National Weather Service
...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT TUESDAY... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM TO 1 PM CDT TUESDAY... * WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to 1/2 NM or less. For the Small Craft Advisory, north winds 10 to 15 kt and waves 3 to 5 ft expected. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan. * WHEN...For the Dense Fog Advisory, until 7 AM CDT Tuesday. For the Small Craft Advisory, from 1 AM to 1 PM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. &&
Dense Fog Advisory
Issued: 10:45 PM Apr. 13, 2026 – National Weather Service
...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT TUESDAY... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM TO 1 PM CDT TUESDAY... * WHAT...For the Dense Fog Advisory, dense fog will reduce visibility to 1/2 NM or less. For the Small Craft Advisory, north winds 10 to 15 kt and waves 3 to 5 ft expected. * WHERE...Lake Michigan nearshore waters from Washington Island to Sheboygan. * WHEN...For the Dense Fog Advisory, until 7 AM CDT Tuesday. For the Small Craft Advisory, from 1 AM to 1 PM CDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass. &&
Flood Watch
Issued: 10:34 PM Apr. 13, 2026 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY MORNING... * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central, east central, north central, and northeast Wisconsin, including the following areas, in central Wisconsin, Marathon, Portage, Waushara and Wood. In east central Wisconsin, Calumet, Manitowoc and Winnebago. In north central Wisconsin, Langlade and Lincoln. In northeast Wisconsin, Brown, Door, Kewaunee, Menominee, Northern Marinette County, Northern Oconto County, Outagamie, Shawano, Southern Marinette County, Southern Oconto County and Waupaca. * WHEN...Through Tuesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Extensive street flooding will also be possible. * ADDITIONAL DETAILS... - Soils are saturated due to recent rainfall and rain across the area this afternoon. Multiple rounds of thunderstorms continue to develop across the watch area through this evening, and will likely produce widespread additional rainfall amounts of 1 to locally 2 inches, with locally higher amounts. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. &&
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