Heavy Freezing Spray Warning Issued for Outer Apostle Islands Through Monday Morning
This alert is no longer in effect.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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The National Weather Service has issued a Heavy Freezing Spray Warning for the Outer Apostle Islands, warning of rapid ice accumulation and hazardous conditions for mariners through 6 AM CST Monday.
Read this weather record in 30 seconds
- Record type
- Heavy Freezing Spray Warning
- Affected area
- Outer Apostle Islands
- Issued
- April 6, 2026
- Issuing authority
- NWS Duluth MN
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 Outer Apostle Islands.
Alert Details
The National Weather Service (NWS) in Duluth, MN, has issued a Heavy Freezing Spray Warning and a Small Craft Advisory for the region. The warning indicates that heavy freezing spray is likely to accumulate rapidly on vessels, posing a significant hazard to maritime operations.
Affected Areas
The alert specifically covers the Outer Apostle Islands Beyond 5 NM from Mainland.
What You Should Do
Mariners are advised to prepare for dangerous accumulations of ice on their vessels. The NWS recommends the following actions:
- Remain in port if possible.
- Avoid the warning area entirely.
- Conduct ice mitigation if already at sea.
- Operators of smaller vessels should avoid navigating in these hazardous conditions to prevent potential loss of stability.
Expected Conditions
According to the NWS, the following conditions are expected during the warning period:
- Ice Accumulation: Heavy freezing spray at a rate of 2 cm per hour or greater.
- Wind: North winds between 10 to 20 knots, with gusts reaching up to 25 knots.
- Waves: Wave heights between 3 to 6 feet.
Operating a vessel under these conditions is extremely hazardous. Rapid ice accretion on decks and superstructures can lead to a catastrophic loss of stability and may render mechanical or electronic components inoperative.
Timeline
The Heavy Freezing Spray Warning and Small Craft Advisory are effective immediately and will remain in effect until 6:00 AM CST Monday, February 23, 2026.
Original source: NOAA Official Notice ↗
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