Special Marine Warning for Grand Portage to Grand Marais MN; Grand Marais to Taconite Harbor MN; Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM
Official alert fields
What you need to know
- Applies to
- Grand Marais to Taconite Harbor MN, Grand Portage to Grand Marais MN, Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM
- Effective
- Ended
- Official severity
- Severe
- Official urgency
- Immediate
- Official certainty
- Likely
What is happening
SMWDLH The National Weather Service in Duluth MN has issued a * Special Marine Warning for... Grand Marais to Taconite Harbor MN... Grand Portage to Grand Marais MN... Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM... * Until 115 PM CDT. * At 1217 PM CDT, a strong thunderstorm was...
What the bulletin says to do
Move to safe harbor until hazardous weather passes.
Full official description
Bulletin details
SMWDLH The National Weather Service in Duluth MN has issued a * Special Marine Warning for... Grand Marais to Taconite Harbor MN... Grand Portage to Grand Marais MN... Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM... * Until 115 PM CDT. * At 1217 PM CDT, a strong thunderstorm was located 9 nm southwest of Horseshoe Bay And Safe Harbor, moving southeast at 15 knots. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Horseshoe Bay And Safe Harbor, Grand Marais Harbor, and Grand Portage Marina.
Lifecycle record
Official revisions
- Alert
Special Marine Warning issued July 30 at 12:18PM CDT until July 30 at 1:15PM CDT by NWS Duluth MN
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Duluth MN. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Alert
- Last collected