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How often is it windy? |
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Rupert
Really should get out more Joined: 11 Aug 04 Location: Whitefriars sc Online Status: Offline Posts: 8956 |
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Topic: How often is it windy? Posted: 08 Jun 12 at 6:27pm |
Looked like great day for a Minisail - shame I'm nowhere near the boat.
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Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
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getafix
Really should get out more Joined: 28 Mar 06 Location: United Kingdom Online Status: Offline Posts: 2143 |
Post Options Quote Reply Posted: 08 Jun 12 at 4:05pm |
TODAY !!!!
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Presuming Ed
Really should get out more Joined: 26 Feb 05 Location: United Kingdom Online Status: Offline Posts: 641 |
Post Options Quote Reply Posted: 12 Mar 12 at 9:48am |
Chichester harbour - with archives - here: http://www.cambermet.co.uk/(S(akxmxb45rkajvs3cdq1g5223))/default.aspx
Data every 5 minutes, if anybody fancies a project....
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rogue
Really should get out more Joined: 04 Dec 08 Location: United Kingdom Online Status: Offline Posts: 978 |
Post Options Quote Reply Posted: 12 Mar 12 at 9:28am |
it's true, last year was a windy year iirc. I certainly got plenty of planing sessions in after work on my board. Contrasted to the year prior, where I spent a lot time crouched inboard for my evening sailing and rarely bothered with the board.
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marke
Far too distracted from work Joined: 16 Jun 08 Location: United Kingdom Online Status: Offline Posts: 211 |
Post Options Quote Reply Posted: 10 Mar 12 at 2:44pm |
Most of the Met Office data - from which all the various sources listed above are derived - are data collected at 10m and are average daily/monthly data. Apart from being able to (possibly) spot areas that are windier than others - these are not much value for analysing sailing conditions for lots of reasons
- windspeed at the centre of effort of your sail is going to be a lot different than 10m wind speeds - you can correct down to the surface for different heights but that will only be valid on the largest lakes/ open sea. - daily average wind speed is lowered significantly by nighttime reduction due to thermal effects - orography - etc etc. I know of a bunch of people researching near surface wind speeds - "can of worms" doesn't even get close!. Mark P.S Jim is right about windy years/decades - the big global circulation effects (ENSO etc. have an effect)
Edited by marke - 10 Mar 12 at 2:46pm |
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Jack Sparrow
Really should get out more Joined: 08 Feb 05 Location: United Kingdom Online Status: Offline Posts: 2965 |
Post Options Quote Reply Posted: 10 Mar 12 at 1:47pm |
Medway Maniac
Really should get out more Joined: 13 May 05 Location: United Kingdom Online Status: Offline Posts: 2788 |
Post Options Quote Reply Posted: 10 Mar 12 at 10:38am |
Alright, here is a map:
and here you can enter your 4-figure grid ref to find out your local avg windspeed: Speeds are in m/s (1 m/s = ca. 2.2 mph)
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JimC
Really should get out more Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6649 |
Post Options Quote Reply Posted: 10 Mar 12 at 10:23am |
When I designed the PlusPlus I did some research with what I could find out on line (rather less than there is now I suspect), and from what I could find out not only do you get windy years and quiet years, you get windy decades and quiet decades.
Edited by JimC - 10 Mar 12 at 10:23am |
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Medway Maniac
Really should get out more Joined: 13 May 05 Location: United Kingdom Online Status: Offline Posts: 2788 |
Post Options Quote Reply Posted: 10 Mar 12 at 10:17am |
I read somewhere - may even have been on the Met Office site (somewhere!) - that the average windspeed in UK is 10mph (or was it knots?).
But it varies hugely from season to season. Wednesday series usually see a couple of drifters where people creep home, but last season we had trapezing winds every week on the Medway, and not just downstream away from the buildings. Most dinghy classes have evolved such that they are about right in average conditions in my experience, and work remarkably well over the range, when you consider that because of the square law, a change from 10 to 11mph implies a 20% increase in heeling moment.
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sargesail
Really should get out more Joined: 14 Jan 06 Location: United Kingdom Online Status: Offline Posts: 1459 |
Post Options Quote Reply Posted: 10 Mar 12 at 9:45am |
Not often enough!
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