National Weather Service United States Department of Commerce

Scattered Showers and Thunderstorms Tonight

Scattered showers and thunderstorms will continue overnight. Heavy downpours could lead to minor flooding. A cold front will move through on Friday bringing an end to the rain by Friday evening. Read More >

Lake Michigan Marine Zone Codes

The Marine Zones on Lake Michigan are assigned SAME codes. This table lists the Marine Zone identifier, a description of the area covered, and the SAME code that has been assigned to that zone.

Zones designated "Nearshore" cover waters from the shoreline to 5 Nautical Miles offshore.

Zones designated "Open Water" cover waters from 5 Nautical Miles offshore to the midline of the lake.

Zone Description Code
LMZ843 Nearshore - New Buffalo to St Joseph 092843
LMZ844 Nearshore - St Joseph to South Haven 092844
LMZ845 Nearshore - South Haven to Holland 092845
LMZ846 Nearshore - Holland to Grand Haven 092846
LMZ847 Nearshore - Grand Haven to Whitehall 092847
LMZ848 Nearshore - Whitehall to Pentwater 092848
LMZ849 Nearshore - Pentwater to Manistee 092849
LMZ867 Open Water - New Buffalo to Holland 092867
LMZ868 Open Water - Holland to Whitehall 092868
LMZ869 Open Water - Whitehall to Manistee 092869