Your thoughts for YachtsandYachting.com: Tidal Heights

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Tidal Heights

Printed From: Yachts and Yachting Online
Category: Your ideas for this website
Forum Name: Your thoughts for YachtsandYachting.com
Forum Discription: What do you think we should be featuring on YachtsandYachting.com
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=674
Printed Date: 30 Jun 25 at 1:33pm
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com

Topic: Tidal Heights

Posted By: MINESAPINT
Subject: Tidal Heights
Date Posted: 29 Apr 05 at 10:28am

Does anyone know what is the assumed barometric pressure used for calculating tidal predictions?

As far as I know it is 1017mb but is this figure used worldwide or locally?

MINESAPINT.

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MINESAPINT

Replies:

Posted By: Stefan Lloyd
Date Posted: 29 Apr 05 at 11:02am

Interesting question to which I don't have the answer. Try asking on uk.rec.sailing, which is more of a yottie forum.

Posted By: Buzz
Date Posted: 29 Apr 05 at 3:26pm

The average barometric pressure used in the UK is 1013mb. (Thanks to the United Kingdom Hydrographic Office for the answer).

It would seem logical that different average pressures would apply in different areas around the world as some places must sit under high pressure for long periods and others low pressure systems.

If you need more info on tidal prediction check out http://www.ukho.gov.uk - www.ukho.gov.uk they offer a range of products and services and are amazingly helpful.

Posted By: MINESAPINT
Date Posted: 30 Apr 05 at 2:17pm

I also found 1013 to be average barometric pressure although I did not notice it said this was for UK only. However I do not think this is used for calculating tidal heights. I did find a site that stated it was 1017mb but again was not specific. I imagine as you do different pressures will be used in different parts of the world as the basis for the calculations. I just need to know some specifics.

MINESAPINT.

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MINESAPINT