Heavy Freezing Spray Warning Issued for Marquette and Munising Coastal Areas
This alert is no longer in effect.
NOAA issued it on April 6, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
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NWS Marquette has issued a Heavy Freezing Spray Warning for Michigan's Lake Superior coast, with ice accumulation rates of 2 cm per hour and waves up to 12 feet expected.
Read this weather record in 30 seconds
- Record type
- Heavy Freezing Spray Warning
- Affected area
- Upper Michigan Coastline
- Issued
- April 6, 2026
- Issuing authority
- NWS Marquette
The warning type, named area, and issue time define this record. Confirm all three against the original agency notice before treating it as current.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Upper Michigan Coastline.
Alert Details
The National Weather Service in Marquette, MI, has issued a Heavy Freezing Spray Warning and a Small Craft Advisory for the coastal waters of Lake Superior. The alert indicates a high risk of rapid ice accumulation on vessels due to freezing spray and high wave activity.
Affected Areas
The warning specifically covers the following geographic regions in Michigan:
- Marquette to Munising, MI
- Munising to Grand Marais, MI
What You Should Do
Mariners should prepare for dangerous accumulation of ice on their vessels. If possible, remain in port, avoid the warning area, or conduct mitigation. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in these hazardous conditions. Operating a vessel in heavy freezing spray is hazardous as it may render mechanical and electronic components inoperative and result in a catastrophic loss of stability.
Expected Conditions
- Freezing Spray: Accumulation rates of 2 cm per hour or greater are expected.
- Wind: West winds 15 to 25 knots with gusts up to 30 knots.
- Waves: Significant wave heights between 7 and 12 feet.
- Impacts: Rapid ice accretion on decks and superstructures.
Timeline
- Small Craft Advisory: Effective from 7:00 PM EST Tuesday, February 24, until 7:00 AM EST Thursday, February 26.
- Heavy Freezing Spray Warning: Effective from 4:00 AM EST Wednesday, February 25, until 1:00 AM EST Thursday, February 26.
Original source: NOAA Official Notice ↗
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