Manuals, Standards, Circulars and Bulletins
In this section, you will find Environment and Climate Change Canada's (ECCC) documentation pertaining to weather forecasting, observing standards, circulars and bulletins. This documentation is managed by ECCC for use by ECCC as well as for other Government of Canada departments and partners.
Note: Clicking on the document cover image will bring you directly to the PDF version of the document. To view the document landing page and HTML versions, where available, click on the hyperlinked document title.
Manual of Word Abbreviations
Manual of Standards and Procedures for Observing and Reporting Ice Conditions
Manual of Standards and Procedures for Aviation Weather Forecasts
7th Edition, Amendment 1
Manual of Surface Weather Observations
7th Edition, Amendment 19, Addendum
Manual of Climatological Observations
Manual of Marine Weather Observations
Observer Circular (OBS)
Observer circulars provide instructions concerning new or revised observing procedures and/or new equipment and provide temporary interim instructions. Observer circulars supplement the current edition and amendment of the Manual of Surface Weather Observations (MANOBS) and are incorporated in subsequent editions or amendments.
MANAIR Circular (AIR)
MANAIR circulars supplement the current edition and amendment of the Manual of Standards and Procedures for Aviation Weather Forecasts (MANAIR) and are incorporated in subsequent editions or amendments.
Aviation Weather Observing Bulletins (AVOBS) convey reminders, additional instructions, and clarification of observing procedures to weather observing stations.
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