Seasonal Outlook for the Great Lakes - Winter 2011-2012
Appendix A - Stages of Development of Lake Ice and Egg Code
For more information on this section, please refer to the following web link on the Canadian Ice Service website:
or on the National Ice Center website:
Appendix B - General information from the Canadian Coast Guard
General information regarding transmission times for bulletins and charts from various radio broadcast stations:
Appendix C - WMO (World Meteorological Organization) Colour Code
Information regarding the ice chart colour code using the WMO standard could be found at the link below:
Appendix D - Ice Services for Canadian Great Lakes Waters
In Canada, ice services are provided to shipping, fishing and in-lake operators by a co-operative effort of Environment Canada and the Department of Fisheries and Oceans. Department of Fisheries and Oceans, through the Canadian Coast Guard, provides icebreaker services and operates a seasonal Ice Operations Office at Sarnia. Canadian Ice Service of the Meteorological Service of Canada (division of Environment Canada) is responsible for gathering and generating ice information services and forecasts.
The following forecasts are issued:
Great Lakes Ice Hazard Bulletin (FICN19): A general ice description of conditions in each of the Great Lakes and, if required, a warning of hazardous ice conditions for the next 36 hours.
Ice Charts produced at least twice a week and a weekly Regional Ice Chart covering all five lakes are issued by the North American Ice Service. The Great Lakes IceCharts are issued in two sections: the western portion of the Great Lakes which includes Lake Superior and Lake Michigan and the eastern portion of the Great Lakes which includes Lake Huron, Lake St Clair, Lake Erie and Lake Ontario. In addition to the distribution outlined in Appendix B, ice forecasts and bulletins and the Seasonal Outlook are available from the Canadian Ice Service website (http://www.ec.gc.ca/glaces-ice/) and the National Ice Center website (http://www.natice.noaa.gov/). The seasonal outlook is issued once yearly then updated twice monthly by 30-day forecasts.
For further information concerning these services please contact the Canadian Ice Service by phone 877-789-7733, facsimile 613-947-9160 or e-mail at:
or the National Ice Centre:
- Date Modified: