Weather manuals and documentation

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.

Manuals

MANAB 3rd Edition
Manual of Word Abbreviations
Valid until December 1, 2021

MANAB 4th Edition
Manual of Word Abbreviations
Valid on December 2, 2021

MANICE
Manual of Standards and Procedures for Observing and Reporting Ice Conditions
Revised Edition

MANAIR
Manual of Standards and Procedures for Aviation Weather Forecasts
7th Edition, Amendment 1
Valid until December 1, 2021

MANAIR
Manual of Standards and Procedures for Aviation Weather Forecasts
8th Edition
Valid on December 2, 2021

MANOBS
Manual of Surface Weather Observation Standards
8th Edition
Effective: February 2019

MANCLIM
Manual of Climatological Observations
4th Edition

MANMAR
Manual of Marine Weather Observations
8th Edition

Circulars

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.

AIR 5-2021
Instrument Flight Rules (IFR) approach and alternate limits for Canadian aerodromes with an Aerodrome Forecast (TAF) or an advisory program
Effective: October 7, 2021

Observer Circular (OBS)

Effective February 2019, coinciding with the publication of MANOBS 8th Edition, Observer Circulars are no longer issued by Environment and Climate Change Canada.

Bulletins

Effective February 2019, coinciding with the publication of MANOBS 8th Edition, Aviation Weather Observing Bulletins (AVOBS) are no longer issued by Environment and Climate Change Canada.

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