Active Weather Alerts
Gale Warning
Issued: 2:46 PM Apr. 18, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... ...GALE WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...For the Small Craft Advisory, west winds 15 to 25 kt with gusts up to 30 kt and waves 1 to 4 ft occurring. For the Gale Warning, west winds 20 to 25 kt with gusts up to 35 kt and waves 2 to 5 ft expected. * WHERE...Point Isabelle to Lower Entrance of Portage Canal MI and Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays. * WHEN...For the Small Craft Advisory, until 1 PM EDT this afternoon. For the Gale Warning, until 8 PM EDT this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. &&
Small Craft Advisory
Issued: 2:46 PM Apr. 18, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... ...GALE WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...For the Small Craft Advisory, west winds 15 to 25 kt with gusts up to 30 kt and waves 1 to 4 ft occurring. For the Gale Warning, west winds 20 to 25 kt with gusts up to 35 kt and waves 2 to 5 ft expected. * WHERE...Point Isabelle to Lower Entrance of Portage Canal MI and Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays. * WHEN...For the Small Craft Advisory, until 1 PM EDT this afternoon. For the Gale Warning, until 8 PM EDT this evening. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. &&
River Flood Advisory
Issued: 3:05 AM Apr. 18, 2026 – National Weather Service
...FLOOD ADVISORY NOW IN EFFECT UNTIL EARLY MONDAY MORNING... * WHAT...Elevated river levels caused by rain and snowmelt continue. * WHERE...Sturgeon River near Sidnaw. * WHEN...Until early Monday morning. * IMPACTS...At 12.0 feet, Flooding of low lying wooded lands upstream and downstream occurs * ADDITIONAL DETAILS... - At 10:45 PM EDT Friday the stage was 9.7 feet. - Bankfull stage is 11.0 feet. - Forecast...The river is expected to rise to a crest of 11.6 feet early tomorrow afternoon. - Action stage is 11.0 feet. - Flood stage is 12.0 feet. - www.weather.gov/safety/flood && Fld Observed Forecasts (2 am EDT) Location Stg Stg Day/Time Sun Mon Tue Sturgeon River Sidnaw 12.0 9.7 Fri 10 pm ED 10.7 8.3 7.4 &&
River Flood Warning
Issued: 2:58 AM Apr. 18, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE... * WHAT...Minor flooding is occurring. * WHERE...Sturgeon River near Chassell. * WHEN...Until further notice. * IMPACTS...At 10.5 feet, The river begins to overflow onto Sturgeon River Road...Rajala Road...and Aho Road * ADDITIONAL DETAILS... - At 6:00 PM EDT Friday the stage was 11.1 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 6:00 PM EDT Friday was 11.1 feet. - Forecast...No forecast is available for this location. - Flood stage is 10.5 feet. - Flood History...This crest compares to a previous crest of 11.2 feet on 04/18/2023. - www.weather.gov/safety/flood && Fld Observed Forecasts (unknown time) Location Stg Stg Day/Time d1 d2 d3 Sturgeon River Chassell 10.5 11.1 Fri 6 pm EDT MSG MSG MSG &&
River Flood Warning
Issued: 2:56 AM Apr. 18, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE... * WHAT...Minor flooding is occurring and major flooding is forecast. This approaches the flood of record. * WHERE...Sturgeon River near Alston. * WHEN...Until further notice. * ADDITIONAL DETAILS... - At 10:30 PM EDT Friday the stage was 9.9 feet. - Bankfull stage is 7.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:30 PM EDT Friday was 10.0 feet. - Forecast...The river is expected to rise to a crest of 14.0 feet early Sunday morning. - Flood stage is 8.0 feet. - Flood History...This crest compares to a previous crest of 13.8 feet on 04/24/1960. - www.weather.gov/safety/flood && Fld Observed Forecasts (8 pm EDT) Location Stg Stg Day/Time Sat Sun Mon Sturgeon River Alston 8.0 9.9 Fri 10 pm ED 13.6 12.2 8.9 &&
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