Regional Marine Information

Mariner’s Guide to Marine Weather Services

These quick reference guides outline the marine weather forecast services available for all marine areas that receive an Environment Canada forecast.  To view the guide for your marine area of interest, click on the appropriate link below.

In addition to it's Mariner’s Guides, Environment Canada also offers a number of other marine-related documents for quick reference: 

  • The MAFOR Decode Table allows mariners operating in the Great Lakes and St. Lawrence River regions to interpret the coded version of our Regular Marine Forecast. 
  • The Beaufort Wind Scale Table helps mariners to estimate the wind speed over open water based on the observed wave conditions.