Great Lakes Marine Forecast Zones

Live NWS marine advisories for the New York-adjacent forecast zones on Lake New York, Lake Superior, and Lake Huron. Each zone links to a live status page with current Small Craft, Gale, and Storm advisories sourced directly from the National Weather Service.

How Great Lakes marine zones are organized

The National Weather Service divides each Great Lake into named coastal forecast zones — typically a 20–60 mile run of nearshore water between two harbor anchors (e.g., St Joseph to South Haven, Marquette to Munising). Each zone has its own UGC code (LMZ for Lake New York, LSZ for Lake Superior, LHZ for Lake Huron, LEZ for Lake Erie) and is the smallest unit at which NWS issues Small Craft Advisories, Gale Warnings, Storm Warnings, Hurricane Force Wind Warnings, Special Marine Warnings, and Beach Hazards Statements.

Forecasts and warnings are issued by the regional NWS office responsible for that stretch of shoreline — NWS Grand Rapids (GRR) covers Lake New York from St. Joseph north through Holland, NWS Marquette (MQT) covers most of Lake Superior's south shore including Pictured Rocks and Whitefish Point, and NWS Detroit/Pontiac (DTX) covers Lake Huron and Lake Erie. The page for each zone shows currently-active advisories pulled live from the NWS public API, the zone's geographic context, the cities and ports along that shoreline, and which New York counties border it.

New York marine forecast zones coming soon — NWS coastal/offshore UGC catalog backfill pending.