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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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Spring must be on the way. The sun's peeking between the clouds, it's a
balmy 8.6C, and the first daffodil has opened. Don't ask me what variety. It's yellow. -- Steve Loft, Wanlockhead, Dumfriesshire. 1417ft ASL http://www.wanlockhead.org.uk/weather/ Free software for Oregon Scientific weather stations: http://www.nybbles.co.uk/cumulus/ |
#2
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On Mon, 12 Apr 2004 10:47:18 +0100, Steve Loft wrote:
Spring must be on the way. The sun's peeking between the clouds, it's a balmy 8.6C, and the first daffodil has opened. Out "control" clumps were almost out yesterday. Max of 14.9C yesterday only 9.7C so far today, slightly more cloud about. Will have to have look today, last year it was the 4th April for "first daffs". -- Cheers Dave. pam is missing e-mail |
#3
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Dave Liquorice wrote:
Out "control" clumps were almost out yesterday. Max of 14.9C yesterday only 9.7C so far today, slightly more cloud about. Will have to have look today, last year it was the 4th April for "first daffs". We're seriously considering a poly tunnel if we're to have any hopes of growing anything here. -- Steve Loft, Wanlockhead, Dumfriesshire. 1417ft ASL http://www.wanlockhead.org.uk/weather/ Free software for Oregon Scientific weather stations: http://www.nybbles.co.uk/cumulus/ |
#4
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On Tue, 13 Apr 2004 08:56:32 +0100, Steve Loft wrote:
We're seriously considering a poly tunnel if we're to have any hopes of growing anything here. If you get anything like the winds we do a poly tunnel won't survive the first winter. There are some down in village, 400' lower and sheltered by our standards but a good blow will damage those and their life is shorter than normal. Our Daffs weren't out yesterday, quite a cloudy cool day, today is over 10C already, bright and sunny. -- Cheers Dave. Nr Garrigill, Cumbria. 421m ASL. pam is missing e-mail |
#5
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Dave Liquorice wrote:
If you get anything like the winds we do a poly tunnel won't survive the first winter. There are some down in village, 400' lower and sheltered by our standards but a good blow will damage those and their life is shorter than normal. I've been quite surprised so far by how we don't seem to get really strong winds here, despite the altitude. I guess it's because we aren't at the top of a hill, as I imagine you to be. The village seems to be quite sheltered on all sides by the closely surrounding hills of heights between 500 and 600m, i.e. around 100-200m higher than us. The highest 10-minute average wind speed I've recorded this winter is 39.1 mph, and the highest gust 62.8 mph, not too bad at all. -- Steve Loft, Wanlockhead, Dumfriesshire. 1417ft ASL http://www.wanlockhead.org.uk/weather/ Free software for Oregon Scientific weather stations: http://www.nybbles.co.uk/cumulus/ |
#6
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On Tue, 13 Apr 2004 12:19:34 +0100, Steve Loft wrote:
I've been quite surprised so far by how we don't seem to get really strong winds here, despite the altitude. I guess it's because we aren't at the top of a hill, as I imagine you to be. Well we aren't "on the top" by 500 to 1000' depending on the hill you choose but we do have a good view thus are pretty exposed... Tucked down in the valley bottom we aren't, they have big trees down there that grow straight. We have little ones that lean and grow only on one side... The highest 10-minute average wind speed I've recorded this winter is 39.1 mph, and the highest gust 62.8 mph, not too bad at all. 39 is F8 or a true Gale. I doubt many places really get true gales. Remember the media hype wind speeds by quoting the highest gusts not the mean. Highest gusts are 20mph or more above the mean at the time of the gust. So 50mph peak gusts means means of 30mph(ish), a mere Strong Breeze... I *think* there is a square law in the relationship between generated force and wind speed as well. -- Cheers Dave. pam is missing e-mail |
#7
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On Mon, 19 Apr 2004 11:12:30 +0100 (BST), Dave Liquorice wrote in
ill.com snip I *think* there is a square law in the relationship between generated force and wind speed as well. Dave - you are indeed correct. The forces due to the wind are proportional to V^2 and power to V^3. -- Mike 55.13°N 6.69°W Coleraine posted to uk.sci.weather 19/04/2004 10:39:30 UTC |
#8
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On Mon, 19 Apr 2004 11:39:30 +0100, Mike Tullett wrote:
Dave - you are indeed correct. The forces due to the wind are proportional to V^2 and power to V^3. So a 30mph wind produces a force fo "900". A 40mph wind a force fo "1600" nearly double... You only have to look around the garden here to see that sustained 30 and 40mph winds don't leave a lot behind... -- Cheers Dave. pam is missing e-mail |
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