Small Craft Advisory for Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island; St Ignace to False Detour Channel
Official alert fields
What you need to know
- Applies to
- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island, Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI, Manistee to Point Betsie MI, Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay, Point Betsie to Sleeping Bear Point MI, Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary, Seul Choix Point to 5NM West of Mackinac Bridge, Sleeping Bear Point to Grand Traverse Light MI and 4 more
- Effective
- Ends or expires
- Official severity
- Minor
- Official urgency
- Expected
- Official certainty
- Likely
What is happening
What: For the Small Craft Advisory, Highest gusts up to 30 kts from the southwest and highest waves around 6 feet expected. For the Gale Watch, Highest gusts up to 40 kts from the southwest and highest waves around 6 feet possible. Impacts: Strong winds can cause hazardous highest waves which could capsize or...
What the bulletin says to do
Mariners should consider altering plans to avoid possible hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe wind and highest waves.
Full official description
Bulletin details
* WHAT...For the Small Craft Advisory, Highest gusts up to 30 kts from the southwest and highest waves around 6 feet expected. For the Gale Watch, Highest gusts up to 40 kts from the southwest and highest waves around 6 feet possible. * WHERE...Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island and St Ignace to False Detour Channel. * WHEN...For the Small Craft Advisory, from 11 AM this morning to 5 AM EDT Sunday. For the Gale Watch, from late tonight through Sunday evening. * IMPACTS...Strong winds can cause hazardous highest waves which could capsize or damage vessels and reduce visibility.
Official geometry where available
Alert boundary
Lifecycle record
Official revisions
- Alert
Small Craft Advisory issued October 17 at 4:43AM EDT until October 18 at 5:00AM EDT by NWS Gaylord MI
Official revision - Alert
Small Craft Advisory issued October 17 at 4:43AM EDT until October 19 at 5:00AM EDT by NWS Gaylord MI
Official revision - Alert
Small Craft Advisory issued October 17 at 4:43AM EDT until October 18 at 11:00PM EDT by NWS Gaylord MI
Official revision - Alert
Small Craft Advisory issued October 17 at 4:43AM EDT until October 19 at 5:00AM EDT by NWS Gaylord MI
Official revision - Alert
Small Craft Advisory issued October 17 at 4:43AM EDT until October 18 at 5:00AM EDT by NWS Gaylord MI
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Gaylord MI. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Alert
- Last collected