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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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#1
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Very big spring tides the last couple of days, size decreasing now.
Luckily it's not been rough, and the pressure's been reasonably high. Still not a good idea to park on the Abbey Slip though. www.easterling.freeserve.co.uk/HT.html Pleasant enough day yesterday, spells of hazy sunshine raised the temperature to 15.1C. Might top 16C today, but damp drizzly & misty. It looks like the temperature will stick near 15C much of the evening & night. Swell's picked up markedly though www.sennen-cove.com/todaysurf.htm - makes quite a change. [OT] but I find this a vaguely depressing time of year. Virtually all the small boats are out of Penzance harbour & in the harbour car/boat park now. The baulks go down in the harbour mouth at Mousehole tomorrow, to stop storm waves surging into the village over the winter. Although the waves do a pretty goood job at taking the direct route sometimes. www.easterling.freeserve.co.uk/PzStorm.PDF Time to get on with all the decorating & maintenance jobs. Graham Penzance |
#2
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On Sat, 27 Oct 2007 08:11:57 -0700, Graham Easterling wrote:
Pleasant enough day yesterday, spells of hazy sunshine raised the temperature to 15.1C. Might top 16C today, but damp drizzly & misty. We've been in the clouds all day up here in Stithians - 120 metres a.s.l. Visibility been down to about 100 metres at times with drizzle, mist and fog. -- MCC |
#3
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Graham Easterling wrote:
Very big spring tides the last couple of days, size decreasing now. Luckily it's not been rough, and the pressure's been reasonably high. Still not a good idea to park on the Abbey Slip though. www.easterling.freeserve.co.uk/HT.html Pleasant enough day yesterday, spells of hazy sunshine raised the temperature to 15.1C. Might top 16C today, but damp drizzly & misty. It looks like the temperature will stick near 15C much of the evening & night. Swell's picked up markedly though www.sennen-cove.com/todaysurf.htm - makes quite a change. [OT] but I find this a vaguely depressing time of year. Virtually all the small boats are out of Penzance harbour & in the harbour car/boat park now. The baulks go down in the harbour mouth at Mousehole tomorrow, to stop storm waves surging into the village over the winter. Although the waves do a pretty goood job at taking the direct route sometimes. www.easterling.freeserve.co.uk/PzStorm.PDF Time to get on with all the decorating & maintenance jobs. Graham Penzance Graham, I was wondering, are these high tides higher and more regular nowadays, or just a normal occurance? -- Keith (Southend) http://www.southendweather.net e-mail: kreh at southendweather dot net |
#4
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On 27 Oct, 17:44, "Keith (Southend)"
wrote: Graham Easterling wrote: Very big spring tides the last couple of days, size decreasing now. Luckily it's not been rough, and the pressure's been reasonably high. Still not a good idea to park on the Abbey Slip though. www.easterling.freeserve.co.uk/HT.html Pleasant enough day yesterday, spells of hazy sunshine raised the temperature to 15.1C. Might top 16C today, but damp drizzly & misty. It looks like the temperature will stick near 15C much of the evening & night. Swell's picked up markedly thoughwww.sennen-cove.com/todaysurf.htm - makes quite a change. [OT] but I find this a vaguely depressing time of year. Virtually all the small boats are out of Penzance harbour & in the harbour car/boat park now. The baulks go down in the harbour mouth at Mousehole tomorrow, to stop storm waves surging into the village over the winter. Although the waves do a pretty goood job at taking the direct route sometimes.www.easterling.freeserve.co.uk/PzStorm.PDF Time to get on with all the decorating & maintenance jobs. Graham Penzance Graham, I was wondering, are these high tides higher and more regular nowadays, or just a normal occurance? -- Keith (Southend)http://www.southendweather.net e-mail: kreh at southendweather dot net- Hide quoted text - - Show quoted text - Keith, The largest astronomical tides occur close to the equinox. The highest predicted tides in Penzance this year being 20/21st March, 28th September & 26th October. However, reality often varies quite a bit from predictions, even under quite benign weather conditions. I've seen the tide still rising 30 or 40 minutes after it was due to turn. The lower the atmospheric pressure the higher the tide, also, especially in a bay like Mount's Bay, an onshore wind can raise the tide. This combined with low pressure, can increase the height of the tide by a few feet. On top of this you have the wave height to consider. So what can make a difference is if there has been an increase in stormy conditions close to the equinox, and I don't really think there has. Graham |
#5
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Graham Easterling wrote:
Keith, The largest astronomical tides occur close to the equinox. The highest predicted tides in Penzance this year being 20/21st March, 28th September & 26th October. However, reality often varies quite a bit from predictions, even under quite benign weather conditions. I've seen the tide still rising 30 or 40 minutes after it was due to turn. The lower the atmospheric pressure the higher the tide, also, especially in a bay like Mount's Bay, an onshore wind can raise the tide. This combined with low pressure, can increase the height of the tide by a few feet. On top of this you have the wave height to consider. So what can make a difference is if there has been an increase in stormy conditions close to the equinox, and I don't really think there has. Graham I guess what I was thinking on top of this is are sea levels higher in general nowadays so spring tides more dangerously high? -- Keith (Southend) http://www.southendweather.net e-mail: kreh at southendweather dot net |
#6
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![]() Graham I guess what I was thinking on top of this is are sea levels higher in general nowadays so spring tides more dangerously high? -- Keith (Southend)http://www.southendweather.net e-mail: kreh at southendweather dot net- Hide quoted text - Well, Cornwall is actually sinking, and Scilly is sinking quite steadily. So this does make a rise in sea level more significant. Flying into Scilly you can see the old field hedges (walls) under the sea between the Islands. It's certainly giving a few problems at Hugh Town, where a storm a few years back came disturbingly close to eroding through the bank between the south facing Porthcressa beach, and breaking right through to the north facing Town (harbour) beach. Graham Penzance |
#7
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Well, Cornwall is actually sinking, and Scilly is sinking quite
steadily Hi Graham I thought that it was only the south east of England that was still sinking and the west of the UK was rising, caused by 'rebound' after the removal of the weight of glaciers from the last ice-age. ________________ Nick G Otter Valley, Devon 83 m amsl http://www.ottervalley.co.uk |
#8
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On 27 Oct, 21:02, "Nick Gardner"
wrote: Well, Cornwall is actually sinking, and Scilly is sinking quite steadily Hi Graham I thought that it was only the south east of England that was still sinking and the west of the UK was rising, caused by 'rebound' after the removal of the weight of glaciers from the last ice-age. ________________ Nick G Otter Valley, Devon 83 m amslhttp://www.ottervalley.co.uk Nick, Scilly is certainly sinking. I'll try to dig out some info I've got on it & email it to you. I would have thought any ice age rebound would have been lower in the far SW than anywhere else? Graham Penzance |
#9
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![]() I guess what I was thinking on top of this is are sea levels higher in general nowadays so spring tides more dangerously high? I was reading a review of the Birds of Essex and apparently the book highlights the great loss of saltmarsh in Essex in recent times which is presumably due to a rise in sea levels. Presumably this is mainly due to rising sea levels. Alan |
#10
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On 27 Oct, 20:02, "Nick Gardner"
wrote: Well, Cornwall is actually sinking, and Scilly is sinking quite steadily Hi Graham I thought that it was only the south east of England that was still sinking and the west of the UK was rising, caused by 'rebound' after the removal of the weight of glaciers from the last ice-age. ________________ Nick G Otter Valley, Devon 83 m amslhttp://www.ottervalley.co.uk Nick Scilly is certainly sinking. I'll try to dig out some info I've got on it & email it to you. Still searching, I've recently moved & still don't know where everything is. However, 3000 years ago Bryher, Samson, Tresco & St. Martins were all one island. It is just possible to walk from Tresco to both St. Martin's & Bryher a handful of days a year at low water spring tide. (When I say walk, you still have to wade through area 2-3' deep.) As this is only possible by following sand bars, and the old field boundaries are largely hidden below them, and Spring tides on Scilly are around 19' the sea must have risen 30' in the last 3000 years, and possibly as much as 50'. Graham Penzance |
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