175
WHUS73 KAPX 210710
MWWAPX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
310 AM EDT Fri Aug 21 2026

LHZ346-211515-
/O.EXA.KAPX.SC.Y.0070.260821T1600Z-260822T0000Z/
St Ignace to False Detour Channel-
310 AM EDT Fri Aug 21 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM EDT
THIS EVENING...

* WHAT...Highest gusts up to 25 kts from the southeast and
  highest waves around 4 feet expected.

* WHERE...St Ignace to False Detour Channel.

* WHEN...From noon to 8 PM EDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ323-341-342-344>346-211515-
/O.CON.KAPX.SC.Y.0070.260821T1400Z-260822T0000Z/
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-
310 AM EDT Fri Aug 21 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING
TO 8 PM EDT THIS EVENING...

* WHAT...Highest gusts up to 25 kts from the southwest and
  highest waves around 4 feet expected.

* WHERE...Portions of Lake Michigan.

* WHEN...From 10 AM to 8 PM EDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LHZ347-348-211515-
/O.CON.KAPX.SC.Y.0070.260821T1600Z-260822T0000Z/
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-
310 AM EDT Fri Aug 21 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 8 PM
EDT THIS EVENING...

* WHAT...Highest gusts up to 25 kts from the southeast and
  highest waves around 4 feet expected.

* WHERE...5NM East of Mackinac Bridge to Presque Isle Light MI
  including Bois Blanc Island and Presque Isle Light to Sturgeon
  Pt MI Including Thunder Bay National Marine Sanctuary.

* WHEN...From noon to 8 PM EDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$