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VI Mid-Island 2020 - Weather Strategies for the Inside Passage (via Zoom)
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VI Mid-Island 2020 - Weather Strategies for the Inside Passage (via Zoom)

This seminar focuses on the unique weather patterns of the west coast, and how to make decisions based on weather forecasts. Once you understand the dynamics of the most common weather patterns that occur in the region, you can develop strategies that take advantage of the weather patterns for a more comfortable and more enjoyable cruise. Open to all BCA members.

 Export to Your Calendar 2020-10-27 to 2020-10-29
When: Tues Oct 27 & Thurs Oct 29
1900h - 2130h
Where: Online Zoom Meeting
Contact: Kate Swangard

Online registration is closed.
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Purpose and Benefits
The seminar will introduce participants to key concepts of mid-latitude depressions, offshore highs, and inflow and outflow winds, and their interactions with the geography of the Inside Passage.

This seminar is not intended to teach actual forecasting of large scale weather patterns.  Instead, it will show skippers how to apply the information in weather forecasts and local weather reports, to better understand actual conditions in specific locations on the water.

See below for a high level overview of the course.

Day 1 (7:00pm to 9:00pm plus ½ hour for questions)

The major forces that drive weather presented in a BC coastal context


  • Pressure differences create winds
  • Quick introduction to synoptic charts
  • The North Pacific High and the Aleutian Low
The three primary weather patterns
  • Temperate frontal systems
  • Continental high pressure
  • Offshore high pressure
Local effects

General Strategies
  • Back-eddies
  • Tacking in sustained winds
  • Anchoring strategies
Local Strategies


  • Juan de Fuca Strait and San Juan Islands
  • Gulf Islands
  • Burrard Inlet / Fraser River
  • Central Strait of Georgia
  • Choosing the route north to the Broughtons
  • Qualicum wind
  • Northern Georgia Strait and Desolation Sound

Day 2 (7:00pm to 9:00pm plus ½ hour for questions)

Local Strategies (continued)

  • Johnstone Strait (it’s all in the tidal currents)
  • Knight Inlet
  • Crossing Queen Charlotte Strait to Cape Caution
  • Rounding Cape Caution
  • Smith Sound and Rivers Inlet
  • Fitzhugh Sound
  • Crossing Milbanke Sound
  • By-passing Milbanke Sound via Perceval Narrows
  • Ogden Passage, Jackson Pass and Finlayson Channel to Klemtu
  • Princess Royal Channel or Laredo Sound / Principe Channel
  • The Outer coast during SE’ly winds
  • Wright Sound and Douglas Channel
  • Grenville Channel
  • Chatham Sound to Prince Rupert

Winter Weather strategies

  • Advantages and disadvantages of winter cruising
  • Arctic Outbreaks

Prerequisites and Materials:

About the Instructor: 
Kevin Manahan is a retired Canadian Coast Guard officer with more than 20 years navigating the British Columbia coast as a patrol vessel captain.  He has also worked on fishing boats, ferries and coastal transports.  Kevin was Superintendent of the Canadian Coast Guard’s office of Boating Safety (Pacific Region) from 2001 to 2005 before joining Transport Canada Marine Safety National Headquarters.  Retiring from the public service in 2012, Kevin now splits his time between publishing (Ports and Passes, The Radar Book, etc.) and teaching nautical subjects to commercial and recreational mariners.  In 2013 he was awarded the Queen Elizabeth Diamond Jubilee Medal.

Zoom Meeting:  Note that you do not require a subscription to Zoom to participate.  Register, and we will send you an email with the link a couple of days before the course.  Extensive slides with PDFs available to participants after each session.

On your Honour:

  • Do not share the Zoom link and password with anyone.
  • For copyright and privacy reasons, we ask that you do not record the session. (You will receive a PDF of the PowerPoint presentation after each session.)
  • No eavesdropping please.  If more than one person is attending online then please pay accordingly.  Course fees are how we pay instructors, administration and other overhead.  This is how BCA is able to continue offering quality courses to all our members at such affordable prices.

BCA Members - $50  ($35 for one spouse/partner if registered at the same time)
Non-members - $65 ($40 for one spouse/partner if registered at the same time)

Maximum Class Size:

There will be a processing fee of $15 in the event of participant cancellation prior to 5:00pm Sunday, October 25. In the event of participant cancellation after Oct 25, there will be no refund issued.

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VI (Victoria and Mid-Island) Virtual Club Night: Diving with Sharks

2020-10-27 » 2020-10-29
VI Mid-Island 2020 - Weather Strategies for the Inside Passage (via Zoom)