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Small Craft Advisory — Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island; Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI

Structured official-source report · Published Sep 19, 8:25 PM UTC · Updated Sep 20, 1:54 PM UTC
INFO · active

Latest status

* WHAT...Highest gusts up to 30 kts from the northeast and highest waves around 4 feet expected. * WHERE...Portions of Lake Huron and Lake Michigan. * WHEN...Until 2 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Where it happened

Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island; Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI; Seul Choix Point to 5NM West of Mackinac Bridge; Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay; Sleeping Bear Point to Grand Traverse Light MI; Point Betsie to Sleeping Bear Point MI; Manistee to Point Betsie MI

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Latest reported details

official severity
Minor
urgency
Expected
certainty
Likely
event
Small Craft Advisory
areas
Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island; Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI; Seul Choix Point to 5NM West of Mackinac Bridge; Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay; Sleeping Bear Point to Grand Traverse Light MI; Point Betsie to Sleeping Bear Point MI; Manistee to Point Betsie MI

Missing values are unconfirmed, not zero. Magnitude and alert classifications do not establish casualty totals.

What officials are saying

Read the original reports below for instructions and the latest authoritative assessment. StormScapes does not independently confirm damage or issue evacuation orders.

What happens next

Follow updates from the responsible agency and local emergency management. Reports can change as new information becomes available.

Incident timeline

Sep 20, 1:54 PM UTC · nws

* WHAT...Highest gusts up to 30 kts from the northeast and highest waves around 4 feet expected. * WHERE...Portions of Lake Huron and Lake Michigan. * WHEN...Until 2 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Sep 20, 1:54 PM UTC · nws

* WHAT...Highest gusts up to 30 kts from the northeast and highest waves around 5 feet expected. * WHERE...St Ignace to False Detour Channel and 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island. * WHEN...From 2 PM this afternoon to 8 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Sep 20, 1:54 PM UTC · nws

* WHAT...Highest gusts up to 30 kts from the northeast and highest waves around 7 feet expected. * WHERE...Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI. * WHEN...From 2 PM this afternoon to 8 PM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Sep 20, 6:33 AM UTC · nws

* WHAT...Highest gusts up to 30 kts from the northeast and highest waves around 4 feet expected. * WHERE...Portions of Lake Huron and Lake Michigan. * WHEN...From 11 AM Sunday to 2 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Sep 20, 6:33 AM UTC · nws

* WHAT...Highest gusts up to 30 kts from the northeast and highest waves around 7 feet expected. * WHERE...Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI. * WHEN...From 2 PM Sunday to 8 PM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Sep 20, 6:33 AM UTC · nws

* WHAT...Highest gusts up to 30 kts from the northeast and highest waves around 5 feet expected. * WHERE...St Ignace to False Detour Channel and 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island. * WHEN...From 2 PM Sunday to 8 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Sep 20, 2:58 AM UTC · nws

* WHAT...Highest gusts up to 30 kts from the northeast and highest waves around 7 feet expected. * WHERE...Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI. * WHEN...From 2 PM Sunday to 8 PM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Sep 20, 2:58 AM UTC · nws

* WHAT...Highest gusts up to 30 kts from the northeast and highest waves around 5 feet expected. * WHERE...St Ignace to False Detour Channel and 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island. * WHEN...From 2 PM Sunday to 8 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Sep 20, 2:58 AM UTC · nws

* WHAT...Highest gusts up to 30 kts from the northeast and highest waves around 4 feet expected. * WHERE...Portions of Lake Huron and Lake Michigan. * WHEN...From 11 AM Sunday to 2 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Sep 19, 6:31 PM UTC · nws

* WHAT...Highest gusts up to 30 kts from the northeast and highest waves around 4 feet expected. * WHERE...Portions of Lake Huron and Lake Michigan. * WHEN...From 11 AM Sunday to 2 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

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