Lake Michigan Weather

Pressure/Height Anomalies

MSLP

MSLP 500mb

WPC Prog Charts – 500mb

Day 3

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SPC Convective Outlook

Day 1

Day 2

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• SPC Thunderstorm Outlook

Current Warnings/Watches & Discussions

Satellite

Active Atlantic Tropical Cyclones (PTC and higher)

Radar

HRRR Forecast Radar

Lightning

• HREF Precipitation Stamps

HRRR Visualizer

Temperatures

Day 1

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Rain

Day 1

Day 2

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+ Excessive Rain Outlook

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Outlook

Marine Forecasts

Lake Michigan Offshore

Lake Michigan Coastal Forecasts

Chicago LOT Northern Indiana IWX Green Bay GRB Milwaukee MKX Grand Rapids GRR Gaylord APX

Great Lakes Forecast System

Links

• Lake Erie Weather
• NWS National Offices
  • OPC – Atlantic
  • WPC – Home/Fronts
  • SPC Home
  • SWPC Home
• NWS Great Lakes Offices
  • NWS Chicago
  • NWS Northern Indiana
  • NWS Green Bay
  • NWS Milwaukee
  • NWS Grand Rapids
  • NWS Gaylord
• NOAA nowCOAST Map Viewer
• NWS GIS Viewer
• Coastal Marine Text by Zone
• Offshore Marine Text by Zone
• Atlantic High Seas Forecast
• Weather Nerds Model Viewer
• GRIB Resources/Historical Analysis
  • SailDocs Real-Time Grib Status
  • Real-Time Live Grib File Times
  • NCEP Model Products Current Status
  • Climatological Pilot Charts
  • Historical OSCAR NetCDF Tool (2021+)
  • NetCDF to GRIB Tool
  • ECMWF Reanalysis (1940+)
  • Historical WPC Surface Analysis Charts (2006+)
• Tropical Tidbits
  • GFS
    • Rain
    • IR
    • MSLP & 10m Wind
    • 700-300MB Relative Humidity
    • 500 MB height, vorticity
    • MSLP Anomaly Normalized
    • 500 MB Anomaly Normalized
    • 24 hr Accumulated Rain
  • ECMWF
    • Rain
    • MSLP & 10m Wind
    • 700-300MB Relative Humidity
    • 500 MB height, vorticity
    • MSLP Anomaly Normalized
    • 500 MB Anomaly Normalized
    • 24 hr Accumulated Rain
  • GEFS
    • MSLP Centers
  • EPS
    • MSLP Centers

Edition: 09.06.2026