Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
337 PM EDT Fri Sep 19 2025
LHZ421-441>443-200800-
/O.NEW.KDTX.SC.Y.0068.250920T0200Z-250920T2000Z/
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-Port Austin to Harbor Beach MI-
Harbor Beach to Port Sanilac MI-Port Sanilac to Port Huron MI-
337 PM EDT Fri Sep 19 2025
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 4 PM
EDT SATURDAY...
* WHAT...Expect sustained winds up to 18 knots from the east with
gusts up to 25 knots. The largest significant waves will be 5
feet with a potential maximum wave height of 7 feet.
* WHERE...Outer Saginaw Bay SW of Alabaster to Port Austin MI to
Inner Saginaw Bay, Port Austin to Harbor Beach MI, Harbor
Beach to Port Sanilac MI and Port Sanilac to Port Huron MI.
* WHEN...The maximum winds are expected around 10 PM EDT Friday
with the largest waves expected around 4 AM EDT 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.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Grand Rapids MI
337 PM EDT Fri Sep 19 2025
LMZ846>849-200345-
/O.CON.KGRR.SC.Y.0080.250920T0300Z-250920T1200Z/
Holland to Grand Haven MI-Grand Haven to Whitehall MI-
Whitehall to Pentwater MI-Pentwater to Manistee MI-
337 PM EDT Fri Sep 19 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 8 AM EDT SATURDAY...
* WHAT...East winds 15 to 20 knots with gusts up to 25 knots
expected.
* WHERE...Holland to Manistee.
* WHEN...From 11 PM this evening to 8 AM EDT Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
THOMAS
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
357 PM EDT Fri Sep 19 2025
LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-202000-
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-
357 PM EDT Fri Sep 19 2025
This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.
.DAY ONE...This Afternoon and Tonight
A Small Craft Advisory is in effect for portions of Lake Huron. Refer
to the latest marine headline and forecast for details.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
Additional Small Craft Advisories may be needed Saturday night.
There will be a chance for isolated thunderstorms Sunday and Monday.
Severe weather is not expected.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today and tonight.
$$
You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.
TF
Hazardous Weather Outlook
National Weather Service Gaylord MI
333 PM EDT Fri Sep 19 2025
LHZ345>349-LMZ323-341-342-344>346-LSZ321-322-201945-
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-St Ignace to False Detour Channel-
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island-
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay
National Marine Sanctuary-Sturgeon Pt to Alabaster MI-
Grand Traverse Bay south of a line Grand Traverse Light to
Norwood MI-Seul Choix Point to 5NM West of Mackinac Bridge-
Norwood MI to 5NM West of Mackinac Bridge including Little
Traverse Bay-Sleeping Bear Point to Grand Traverse Light MI-
Point Betsie to Sleeping Bear Point MI-
Manistee to Point Betsie MI-
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
St. Marys River Point Iroquois to E. Potagannissing Bay-
333 PM EDT Fri Sep 19 2025
This hazardous weather outlook is for the northern Michigan
nearshore waters of Lake Huron, Lake Michigan and Lake Superior.
.DAY ONE...This afternoon and tonight.
There is a chance for an isolated thunderstorm this afternoon for
the nearshore waters of Lake Michigan south of Grand Traverse
Light. Severe weather is not expected.
There is a chance for additional thunderstorms late tonight across
portions of Lake Michigan. Severe storms are not expected.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
There are chances for thunderstorms at various times from
Saturday through Monday. Severe storms are unlikely, but any storm
may be capable of producing downpours and gusty winds.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated.
For more information visit http://weather.gov/gaylord.
$$
Hazardous Weather Outlook
National Weather Service Gaylord MI
333 PM EDT Fri Sep 19 2025
MIZ016>018-020>036-041-042-086>088-095>099-201945-
Emmet-Cheboygan-Presque Isle-Leelanau-Antrim-Otsego-Montmorency-
Alpena-Benzie-Grand Traverse-Kalkaska-Crawford-Oscoda-Alcona-
Manistee-Wexford-Missaukee-Roscommon-Ogemaw-Iosco-Gladwin-Arenac-
Western Chippewa-Central Chippewa-Southeast Chippewa-
Western Mackinac-Eastern Mackinac-
Mackinac Island/Bois Blanc Island-
Beaver Island and surrounding islands-Charlevoix-
333 PM EDT Fri Sep 19 2025
This hazardous weather outlook is for Eastern Upper Michigan and
Northern Lower Michigan.
.DAY ONE...This afternoon and tonight.
An isolated thunderstorm is possible along the immediate Lake
Michigan shore south and west of Grand Traverse Bay this
afternoon. Severe weather is not expected.
There is a slight chance of thunderstorms late tonight across
areas west of US 131. Severe weather is not expected.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
A high swim risk is expected on Saturday at many Lake Huron
beaches of northeast lower and eastern upper Michigan.
There are chances for thunderstorms at various times from
Saturday through Monday. Severe storms are unlikely, but any storm
may be capable of producing downpours and gusty winds.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated.
For more information visit http://weather.gov/gaylord.
$$
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
155 PM CDT Fri Sep 19 2025
LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-201900-
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
155 PM CDT Fri Sep 19 2025
This Hazardous Weather Outlook is for the open waters of Lake
Michigan.
.DAY ONE...Tonight
There will be a chance for thunderstorms this evening and
overnight.
.DAYS TWO THROUGH SEVEN...Saturday through Friday
The thunderstorm chances will continue Saturday into early next
week.
$$
Sheppard
www.weather.gov/mkx
Hazardous Weather Outlook
National Weather Service Grand Rapids MI
349 AM EDT Fri Sep 19 2025
LMZ844>849-200800-
St Joseph to South Haven MI-South Haven to Holland MI-
Holland to Grand Haven MI-Grand Haven to Whitehall MI-
Whitehall to Pentwater MI-Pentwater to Manistee MI-
349 AM EDT Fri Sep 19 2025
This hazardous weather outlook is for the nearshore waters from
St Joseph to Manistee.
.DAY ONE...Today and Tonight
East to southeast winds are expected to reach Small Craft Advisory
levels with gusts to 25 knots until Saturday morning.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
There is a chance for thunderstorms Saturday afternoon through
Tuesday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Grand Rapids MI
349 AM EDT Fri Sep 19 2025
MIZ037>040-043>046-050>052-056>059-064>067-071>074-200800-
Mason-Lake-Osceola-Clare-Oceana-Newaygo-Mecosta-Isabella-Muskegon-
Montcalm-Gratiot-Ottawa-Kent-Ionia-Clinton-Allegan-Barry-Eaton-
Ingham-Van Buren-Kalamazoo-Calhoun-Jackson-
349 AM EDT Fri Sep 19 2025
This hazardous weather outlook is for portions of southwest Lower
Michigan.
.DAY ONE...Today and Tonight
Pockets of dense fog are possible this morning reducing
visibilities down to a quarter of a mile.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
There is a chance for thunderstorms Saturday afternoon through
Tuesday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
