Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
418 AM EST Fri Nov 21 2025
LSZ245>248-211800-
/O.CON.KMQT.SC.Y.0182.000000T0000Z-251121T1800Z/
Manitou Island to Point Isabelle MI-
Point Isabelle to Lower Entrance of Portage Canal MI-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-Huron Islands to Marquette MI-
418 AM EST Fri Nov 21 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
* WHAT...West to northwest winds 10 to 20 kt with gusts up to 25
kt and waves 1 to 3 ft occurring.
* WHERE...Manitou Island to Point Isabelle MI, Point Isabelle to
Lower Entrance of Portage Canal MI, Lower Entrance of Portage
Canal To Huron Islands MI Including Keweenaw and Huron Bays
and Huron Islands to Marquette MI.
* WHEN...Until 1 PM EST this afternoon.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
418 AM EST Fri Nov 21 2025
LSZ249-212130-
/O.CON.KMQT.SC.Y.0183.000000T0000Z-251122T0600Z/
Marquette to Munising MI-
418 AM EST Fri Nov 21 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM EST
SATURDAY...
* WHAT...West to northwest winds 10 to 20 kt with gusts up to 25
kt and waves 3 to 6 ft occurring.
* WHERE...Marquette to Munising MI.
* WHEN...Until 1 AM EST Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
418 AM EST Fri Nov 21 2025
LSZ250-251-212130-
/O.CON.KMQT.SC.Y.0182.000000T0000Z-251122T0900Z/
Munising to Grand Marais MI-Grand Marais to Whitefish Point MI-
418 AM EST Fri Nov 21 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST
SATURDAY...
* WHAT...West to northwest winds 10 to 20 kt with gusts up to 30
kt and waves 5 to 8 ft occurring.
* WHERE...Munising to Grand Marais MI and Grand Marais to
Whitefish Point MI.
* WHEN...Until 4 AM EST Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
TAP
URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
358 AM EST Fri Nov 21 2025
LHZ441-212130-
/O.CON.KDTX.SC.Y.0086.251122T0000Z-251122T0900Z/
Port Austin to Harbor Beach MI-
358 AM EST Fri Nov 21 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 4 AM EST SATURDAY...
* WHAT...Expect sustained winds up to 15 knots from the
northwest with gusts up to 17 knots. The largest significant
waves will be 4 feet with a potential maximum wave height of 5
feet.
* WHERE...Port Austin to Harbor Beach MI.
* WHEN...The maximum winds are expected around 8 PM EST Friday
with the largest waves expected around 11 PM EST Friday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Gaylord MI
306 AM EST Fri Nov 21 2025
LSZ321-211615-
/O.CON.KAPX.SC.Y.0113.000000T0000Z-251122T0200Z/
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
306 AM EST Fri Nov 21 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM EST THIS
EVENING...
* WHAT...Highest gusts up to 25 kts from the northwest and
highest waves around 7 feet.
* WHERE...Whitefish Bay (U. S. Portion)/Whitefish Point to Point
Iroquois MI.
* WHEN...Until 9 PM EST 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.
&&
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
404 AM EST Fri Nov 21 2025
LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-220915-
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM
off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw
Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
404 AM EST Fri Nov 21 2025
This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.
.DAY ONE...Today and Tonight
A Small Craft Advisory is in effect for portions of Lake Huron
tonight. Please see the latest Marine Weather Message (MWW) for more
information.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
No hazardous weather is expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today and tonight.
$$
You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.
MV
