National Weather Service United States Department of Commerce



Surface Observations

Lake Michigan Current Surface Map
Northeast Wisconsin and Lakeshore Hourly Weather Roundup
Wisconsin Hourly Weather Roundup
Great Lakes Station Data from NDBC
Lake Michigan CMAN Stations  |  Ship Reports 
Great Lakes Water Levels: Mouth of the Fox River | Menominee |    Kewaunee | Sturgeon Bay  
Water Current Analysis


Satellite Based Observations

High Resolution Imagery: MODIS
Water Temperature Analysis: Northeast Wisconsin Shoreline | Great Lakes Daily

  Text Forecasts

Northwest Lk Michigan Nearshore -- Including Green Bay
North Lk Michigan Nearshore -- Including far northern Green Bay
Southwest Lk Michigan Nearshore -- Including Milwaukee shore
Lk Michigan Open Waters -- Beyond 5 nm from shore

Marine Weather Message -- NW Lk Mich including Green Bay
Weather Statements -- NW Lk Mich including Green Bay
Special Marine Warnings -- NW Lk Mich including Green Bay

Graphical Forecasts
Northeast Wisconsin Marine Hazards
Great Lakes Portal
Lake Michigan-Huron Experimental FVCOM NOWCast/Forecast Products
Surface Currents | Surface Temperature
Lake Michigan-Huron Operational Forecast System
Lake Winnebago


USACE Great Lakes Water Levels and Forecasts
Great Lakes Information
Monthly Summaries
Current Water Levels
Weekly Forecast
Six Month Forecasts
Lake Winnebago


Ice Information
Great Lakes Ice Analysis and Forecasts
Great Lakes Ice Climatology


For Mobile Devices
Weather Observations

Lake Michigan Watches, Warnings, and Advisories


Information for the Marine Community

Rip Current Safety
Rip Current Safety Video
National NWS Marine Services Program
National NWS Marine Forecasts
Mariners Weather Log Magazine
NOAA BookletCharts for the Great Lakes

About the Program

The National Weather Service in Green Bay issues forecasts and warnings for a part of northwest Lake Michigan, including the Bay of Green Bay.

The Nearshore Marine Forecast is for waters within 5 nautical miles from shore, and contains a forecast of wave heights, wind and weather out to 48 hours. The Nearshore Marine Forecast is issued year round for much of the lake.

A Special Marine Warning is issued when hazardous weather conditions of short duration, such as those associated with thunderstorms, are expected to produce winds of 34 knots or more.

Lakeshore and Coast Guard Observations are collected and broadcast hourly on the Green Bay and Sister Bay NOAA Weather Radio stations.