Special Marine Warning for Marquette to Munising MI; Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore
Official alert fields
What you need to know
- Applies to
- Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore, Marquette to Munising MI
- Effective
- Ended
- Official severity
- Severe
- Official urgency
- Immediate
- Official certainty
- Likely
What is happening
For the following areas... Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore... Marquette to Munising MI... At 957 PM EDT, strong thunderstorms were located along a line extending from 16 nm north of Grand Island...
What the bulletin says to do
Move to safe harbor until hazardous weather passes.
Full official description
Bulletin details
For the following areas... Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore... Marquette to Munising MI... At 957 PM EDT, strong thunderstorms were located along a line extending from 16 nm north of Grand Island to near Laughing Whitefish Point, moving northeast at 30 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Au Train Island, Laughing Whitefish Point, and Shelter Bay.
Lifecycle record
Official revisions
- Update
Special Marine Warning issued August 7 at 9:58PM EDT until August 7 at 10:15PM EDT by NWS Marquette MI
Official revision - Alert
Special Marine Warning issued August 7 at 9:29PM EDT until August 7 at 10:15PM EDT by NWS Marquette MI
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Marquette MI. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Update
- Last collected