Big Swell, Spring Tides Low Pressure etc.

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Big Swell, Spring Tides Low Pressure etc.

Postby Graham Easterling » 2012 Dec 12, 19:19

This big Atlantic low is forecast to bring a 35' swell into the SW approaches by Saturday, and a 20'+ wave onto Cornish beaches by Sunday http://magicseaweed.com/Sennen-Surf-Report/4/ . A huge swell coinciding with big tides and low pressure makes an interesting cocktail.

UPDATE 15/12 The large swell's arrived now. The breakwater is still working - sort of. Boats pulled right up http://www.sennen-cove.com/harbourcam.htm
Last edited by Graham Easterling on 2012 Dec 15, 17:00, edited 1 time in total.
Graham

Penzance Weather Station
Grid Ref:
SW464231 - Post Code: TR18 4TP
19m AMSL - Aspect SSE
In a SE - NW orientated valley

23 Years of Penzance Weather Records : http://penzanceweather.atspace.com/weather.html
Graham Easterling
 
Posts: 316
Joined: 2011 Nov 30, 20:29
Location: Penzance, Cornwall

Re: Big Swell, Spring Tides Low Pressure etc.

Postby Nick Gardner » 2012 Dec 13, 20:14

David Braine said this low pressure system now covering the whole of the North Atlantic is the largest he has ever seen.

How unusual is it to have an Atlantic depression that extends from Canada to eastern Europe, and from Iceland down to north Africa?
Near Newton Poppleford, Sidmouth - Devon
50:41N 3:17 W; 20 metres AMSL; Station Grade B-BAAA37
http://www.ottervalley.co.uk
Nick Gardner
 
Posts: 429
Joined: 2012 Jan 27, 17:25
Location: Rural riverside valley location near the village of Newton Poppleford and 2 km from the sea.

Re: Big Swell, Spring Tides Low Pressure etc.

Postby Graham Easterling » 2012 Dec 14, 10:27

I'm not sure it's that rare. Just 3 or 4 minutes keying in random autumn/winter dates threw up http://www.wetterzentrale.de/archive/20 ... 021126.gif

I think the difference this time is that there has been essentially a single centre, rather than a few rotating around each other.
Graham

Penzance Weather Station
Grid Ref:
SW464231 - Post Code: TR18 4TP
19m AMSL - Aspect SSE
In a SE - NW orientated valley

23 Years of Penzance Weather Records : http://penzanceweather.atspace.com/weather.html
Graham Easterling
 
Posts: 316
Joined: 2011 Nov 30, 20:29
Location: Penzance, Cornwall


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