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Inland Sailing Wind Conditions

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winging it View Drop Down
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Post Options Post Options   Quote winging it Quote  Post ReplyReply Direct Link To This Post Posted: 15 Aug 09 at 6:53pm
I think the thing about Grafham is that although it is some way from the coast, most of the land between it and the sea is very flat (The Fens), so there is little to interrupt a sea breeze as it travels inland.
the same, but different...

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bert View Drop Down
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Post Options Post Options   Quote bert Quote  Post ReplyReply Direct Link To This Post Posted: 15 Aug 09 at 7:32pm

It`s about 85 miles to grafham from felixstowe so it`s unlikey to be sea breezes,it`s much more likey that people have a lay in !!

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Post Options Post Options   Quote caperol Quote  Post ReplyReply Direct Link To This Post Posted: 24 Aug 09 at 6:17pm
This topic has got the old geography student in me interested!

Found this map, which gives an interesting 'average' picture of the UK
Caperol: your source for Rutland 913 wind power turbines
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Post Options Post Options   Quote ASok Quote  Post ReplyReply Direct Link To This Post Posted: 25 Aug 09 at 9:20am

Hmm - wind data given by a turbine sales company.

I'd take that with a very large pinch of salt! 

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Post Options Post Options   Quote jeffers Quote  Post ReplyReply Direct Link To This Post Posted: 25 Aug 09 at 11:11am

At Hunts if the conditions are right we do get a sea breeze in the height of summer. it normally appears between 1 and 2pm. I remember several oocasions over the last couple of years when the wind suddenly filled in from nothing to a steady F3-4 in a matter of minutes.

Remember Felixstowe is not the closest point on the coast from Grafham, I would suggest that the Wash/Norfolk coast is closer (not by much, but Grafham is probably only 8 or 9 miles as the crow flies from Hunts).

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Post Options Post Options   Quote bert Quote  Post ReplyReply Direct Link To This Post Posted: 25 Aug 09 at 7:56pm

Felixstowe to grafham on google maps is easy to get a distance on but the wash to grafham is a lot more differcult.

jeffers :- "I remember several oocasions over the last couple of years when the wind suddenly filled in from nothing to a steady F3-4 in a matter of minutes".

Remember jeffer`s that this happens sometimes but a sea breeze tends to happen 3 out of 4 days regularly not just several occasions over the last couple of years.

Also the sea breeze has to be considered a local to the coast breeze & if it was a consitant inland breeze would & should have a differant name.

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Post Options Post Options   Quote jeffers Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 09 at 11:04am
Originally posted by bert

Felixstowe to grafham on google maps is easy to get a distance on but the wash to grafham is a lot more differcult.

jeffers :- "I remember several oocasions over the last couple of years when the wind suddenly filled in from nothing to a steady F3-4 in a matter of minutes".

Remember jeffer`s that this happens sometimes but a sea breeze tends to happen 3 out of 4 days regularly not just several occasions over the last couple of years.

Also the sea breeze has to be considered a local to the coast breeze & if it was a consitant inland breeze would & should have a differant name.

This is what I mean, because Hunts is a long way inland the conditions have to be right for the breeze to make it to us. Generally if the gradient wind is from the east and it gets reinforced by the sea breeze (and it is a hot day). These conditions don't happen very often...

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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 09 at 11:31am
Originally posted by jeffers

Generally if the gradient wind is from the east and it gets reinforced by the sea breeze (and it is a hot day)

Interesting: my understanding was that a sea breaze is more likely to happen if the gradient wind coming from the shore.
The theory I saw was that a sea breeze happens when the land heats the air, the hot air rises, cooler air comes in from the sea to replace it and you get a circulation with the air coming from the sea at ground level and heading out again at cloud height. Thus a gradient wind heading out to sea helps kick off the circulation by pushing the rising hot air out there.
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Post Options Post Options   Quote G.R.F. Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 09 at 11:45am
Originally posted by JimC

Originally posted by jeffers

Generally if the gradient wind is from the
east and it gets reinforced by the sea breeze (and it is a hot day)

Interesting: my understanding was that a sea breaze is more likely to
happen if the gradient wind coming from the shore.
The theory I saw was that a sea breeze happens when the land heats the
air, the hot air rises, cooler air comes in from the sea to replace it and
you get a circulation with the air coming from the sea at ground level and
heading out again at cloud height. Thus a gradient wind heading out to
sea helps kick off the circulation by pushing the rising hot air out
there.


This is more likely..

In our locale, the major factor is Romney Marsh which is a sticky out bit of
reclaimed land now majorly used for farming and the crop mix plays a
part, different crops tend to produce stronger or weaker thermals.

Anyway when it does happen we get a thermally induced breeze from the
East which can be quite strong at Hythe, getting weaker at Dymchurch as
the wind lifts with the thermal updraft, whilst over at Camber the Breeze
comes off the sea from the South West in almost the opposite direction..

Interesting anomally but perfectly illustrating the updraft logic, also the
further out to sea you head at Hythe the weaker the breeze..

AS to Grafham I have been there at odd times on hot days when little
thermal swirls appear here and there but they never seemed to be
anything regular you could set your cap to. It's a weird place Grafham,
never totally figured it out, there always seemed to be different things
going on at the top end of the lake than down at the dam end shiftwise
except for the normal black puffy clouds coming over stay right..
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Post Options Post Options   Quote Medway Maniac Quote  Post ReplyReply Direct Link To This Post Posted: 26 Aug 09 at 12:30pm
At both the opens I've done this year at Grafham the wind picked up in the afternoons. On one occasion I actually said "this feels like a sea breeze" but didn't really think it could be; now i wonder...
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