U.S. Coast Guard District 9 Ice Charts

Product:
USCG D9 Ice Concentration Chart
USCG D9 Ice Thickness Chart
USCG D9 Ice Concentration / Thickness Chart

Description: Three custom graphics produced in support of USCG District 9.
1. Ice Concentration - shows ice concentration for the specified day in the Great Lakes from ice free to fast ice.
2. Ice Thickness - shows estimated maximum ice thickness for the specified day in the Great Lakes from ice free to greater than 28 inches
3. Ice Concentration and Thickness - shows both the ice concentration and estimated max thickness for the specified day in the Great Lakes

Coverage Area: Great Lakes

Format: PNG

Periodicity: Twice weekly, on Tuesday and Thursday during the Great Lakes ice season

Dissemination: USNIC Website