Marine Weather Message
Issued by NWS Gaylord, MI

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903
WHUS73 KAPX 210615
MWWAPX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
215 AM EDT Tue Jul 21 2026

LHZ345-LMZ323-341-342-344>346-211415-
/O.CON.KAPX.SC.Y.0060.000000T0000Z-260723T0300Z/
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-
215 AM EDT Tue Jul 21 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT
WEDNESDAY...

* WHAT...Highest gusts up to 30 kts from the northwest and
  highest waves around 8 feet.

* WHERE...Portions of Lake Huron and Lake Michigan.

* WHEN...Until 11 PM EDT Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LHZ346>349-211415-
/O.CON.KAPX.SC.Y.0060.000000T0000Z-260723T0300Z/
St Ignace to False Detour Channel-
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island-
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay
National Marine Sanctuary-Sturgeon Pt to Alabaster MI-
215 AM EDT Tue Jul 21 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT
WEDNESDAY...

* WHAT...Highest gusts up to 30 kts from the northwest and
  highest waves around 10 feet.

* WHERE...St Ignace to False Detour Channel, 5NM East of
  Mackinac Bridge to Presque Isle Light MI including Bois Blanc
  Island, Presque Isle Light to Sturgeon Pt MI Including Thunder
  Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI.

* WHEN...Until 11 PM EDT Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

LSZ321-322-211415-
/O.CON.KAPX.SC.Y.0060.000000T0000Z-260723T0300Z/
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
St. Marys River Point Iroquois to E. Potagannissing Bay-
215 AM EDT Tue Jul 21 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT
WEDNESDAY...

* WHAT...Highest gusts up to 30 kts from the northwest and
  highest waves around 10 feet.

* WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point
  Iroquois MI and St. Marys River Point Iroquois to E.
  Potagannissing Bay.

* WHEN...Until 11 PM EDT Wednesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$