Heavy Freezing Spray and Gale Warnings Issued for Lake Superior Near Whitefish Point
The National Weather Service has issued warnings for heavy freezing spray and gale-force winds on Lake Superior, effective through Tuesday evening.
Alert Details
The National Weather Service in Marquette, MI, has issued a Heavy Freezing Spray Warning and a Gale Warning for portions of Lake Superior. These alerts signify a high risk of rapid ice accumulation on vessels and dangerous maritime conditions.
Affected Areas
The warning covers Lake Superior from Grand Marais, MI, to Whitefish Point, MI, extending 5 nautical miles offshore to the United States/Canadian border.
What You Should Do
Mariners are strongly advised to remain in port or seek safe harbor immediately. If at sea, avoid the warning area or conduct mitigation efforts to manage ice buildup. Mariners should alter plans to avoid these hazardous conditions and ensure vessels are secured.
Expected Conditions
- Freezing Spray: Accumulation rates of 2 cm per hour or greater are expected, which may rapidly accumulate on vessels.
- Winds: South winds between 25 to 35 knots, with gusts reaching up to 40 knots.
- Waves: Significant wave heights between 6 to 11 feet are anticipated.
- Hazards: Rapid ice accretion on decks and superstructures may lead to a catastrophic loss of vessel stability. Freezing spray can also render mechanical and electronic components inoperative. Strong winds and waves could capsize or damage vessels and reduce visibility.
Timeline
- Initial Heavy Freezing Spray Warning: In effect until 7:00 PM EST this evening.
- Second Heavy Freezing Spray Warning: Effective from 9:00 AM to 7:00 PM EST Tuesday.
- Gale Warning: Effective from 10:00 AM to 7:00 PM EST Tuesday.
Source: NOAA Official Notice