Watches, Warnings & Advisories



2 products issued by NWS for: 4NM S Monroe MI

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
347 AM EDT Tue May 20 2025

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-210800-
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-
347 AM EDT Tue May 20 2025

This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.

.DAY ONE...Today and Tonight

Small craft advisories are in effect for all nearshore areas today
and tonight. Please refer to the latest nearshore marine forecast for
details.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Hazardous conditions to small craft will persist on Lake Huron
through Thursday.

.SPOTTER INFORMATION STATEMENT...

$$

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.

SC




Small Craft Advisory

URGENT - MARINE WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
417 PM EDT Tue May 20 2025

LCZ460-LEZ444-210815-
/O.CON.KDTX.SC.Y.0043.000000T0000Z-250521T1400Z/
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
417 PM EDT Tue May 20 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT
WEDNESDAY...

* WHAT...Expect sustained winds up to 20 knots from the east
  with gusts up to 25 knots. The largest significant waves will
  be 4 feet with a potential maximum wave height of 5 feet.

* WHERE...In Lake St Clair, Lake St Clair. In Lake Erie,
  Michigan Waters of Lake Erie from Detroit River to North Cape
  MI.

* WHEN...The maximum winds are expected around 5 PM EDT Tuesday
  with the largest waves expected around 5 PM EDT Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$