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Old December 31st 17, 01:04 PM posted to uk.sci.weather
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Default [OT] Powerful swell at Cape Verde

These waves were videoed a few days ago at Cape Verde. It shows the
power of long-period waves even though the height is relatively modest.
I make the period something like 13-15 seconds

https://twitter.com/twitter/statuses/947449527065305088

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Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr

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Old December 31st 17, 04:19 PM posted to uk.sci.weather
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Default [OT] Powerful swell at Cape Verde

On Sunday, December 31, 2017 at 1:04:58 PM UTC, Norman Lynagh wrote:
These waves were videoed a few days ago at Cape Verde. It shows the
power of long-period waves even though the height is relatively modest.
I make the period something like 13-15 seconds

https://twitter.com/twitter/statuses/947449527065305088

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr


Demonstrates nicely that size isn't everything!

Graham
Penzance
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Old December 31st 17, 05:01 PM posted to uk.sci.weather
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Default [OT] Powerful swell at Cape Verde

On Sunday, December 31, 2017 at 4:19:10 PM UTC, Graham Easterling wrote:
On Sunday, December 31, 2017 at 1:04:58 PM UTC, Norman Lynagh wrote:
These waves were videoed a few days ago at Cape Verde. It shows the
power of long-period waves even though the height is relatively modest.
I make the period something like 13-15 seconds

https://twitter.com/twitter/statuses/947449527065305088

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr


Demonstrates nicely that size isn't everything!

Graham
Penzance


Serious (OT) warning. There's a gallery in Porthleven with the most amazing surf pictures.
http://www.wavesgallery.co.uk/wp-con...ortholeweb.jpg
http://www.wavesgallery.co.uk/wp-con...ishKissweb.jpg

He used to do wedding photos, but found it too stressful!

Graham
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Old December 31st 17, 07:10 PM posted to uk.sci.weather
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Default [OT] Powerful swell at Cape Verde

Graham Easterling wrote:

On Sunday, December 31, 2017 at 4:19:10 PM UTC, Graham Easterling
wrote:
On Sunday, December 31, 2017 at 1:04:58 PM UTC, Norman Lynagh wrote:
These waves were videoed a few days ago at Cape Verde. It shows
the power of long-period waves even though the height is
relatively modest. I make the period something like 13-15 seconds

https://twitter.com/twitter/statuses/947449527065305088

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr


Demonstrates nicely that size isn't everything!

Graham
Penzance


Serious (OT) warning. There's a gallery in Porthleven with the most
amazing surf pictures.
http://www.wavesgallery.co.uk/wp-con.../portholeweb.j
pg
http://www.wavesgallery.co.uk/wp-con.../CornishKisswe
b.jpg

He used to do wedding photos, but found it too stressful!

Graham


Super photos. I bet he got a good number of duff ones before he
captured those.

It's 5 hours early but a Happy New Year to one and all when it comes!
I'll shortly be shutting down for the night and getting my hand round a
glass of something with a peaty flavour that comes from Islay :-)

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr
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Old December 31st 17, 07:11 PM posted to uk.sci.weather
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Default [OT] Powerful swell at Cape Verde

Graham Easterling wrote:

On Sunday, December 31, 2017 at 1:04:58 PM UTC, Norman Lynagh wrote:
These waves were videoed a few days ago at Cape Verde. It shows the
power of long-period waves even though the height is relatively
modest. I make the period something like 13-15 seconds

https://twitter.com/twitter/statuses/947449527065305088

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr


Demonstrates nicely that size isn't everything!

Graham
Penzance


Over the years I have spent a considerable amount of time educating
people, who should perhaps know better, That the most important factor
in the movement of large ships, both offshore and in port, is the wave
period. Increases in the period are far more important than increases
in the wave height.

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr


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Old January 1st 18, 11:38 AM posted to uk.sci.weather
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Default [OT] Powerful swell at Cape Verde

On Sunday, 31 December 2017 13:04:58 UTC, Norman Lynagh wrote:
These waves were videoed a few days ago at Cape Verde. It shows the
power of long-period waves even though the height is relatively modest.
I make the period something like 13-15 seconds

https://twitter.com/twitter/statuses/947449527065305088

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr


What helps as well is that, being volcanic islands, they slope steeply to the ocean floor. These waves are less likely to dissipate themselves than on a gentle slope.
I was there Easter 2013. Even on relatively quiet days the waves came ashore with quite a thump.


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