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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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#31
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We know that Ron. What we're saying, and I can't believe you've never seen
it, that heavy snow, whacking big flakes, with air temp around 0.5C - 1.0C is not only failing to settle on the ground but also on already lying snow. (although last one is from Darren!). Air is often is above freezing when snow settles. Still think it's under soil heating! Anyway lets hope this next burst does better for whatever reason. Dave "Ron Button" wrote in message ... It never ceases to amaze me how many posts refer to 'it won't settle because it's too wet ! .No lads, it won't settle ,not because it's too wet but because it's too warm ! It can pee down with rain for 12 hours at 2C,,but as soon as the temp drops to zero ,it freezes and then settles .Bloody obvious to me.....like saying it's too cold to snow ,but we won't go there eh / RonB "Darren Prescott" wrote in message ... "Dave.C" wrote in message .uk... I know I'm getting boring but I'm sure most people are surprised it hasn't settled more! It's a theme that's cropped up on some Web based message boards as well. The only thing I can say for certain is that given heavy enough snow (of the big fluffy flake sort), it *will* settle, even if the roads are soaking wet after rain/melted snow. Until today the last time I saw that in action was the snow event in January 2004, which started with a few minutes of heavy rain which turned to heavy snow and promptly settled. Other than that, there's got to be an obvious reason why the snow's having such trouble settling in this spell. I'd be tempted to say it's the radiation absorbed during the day that's causing it to melt so quickly, but that wouldn't apply to snow falling early in the day. |
#32
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We know that Ron. What we're saying, and I can't believe you've never seen
it, that heavy snow, whacking big flakes, with air temp around 0.5C - 1.0C is not only failing to settle on the ground but also on already lying snow. (although last one is from Darren!). Air is often is above freezing when snow settles. Still think it's under soil heating! Anyway lets hope this next burst does better for whatever reason. Dave "Ron Button" wrote in message ... It never ceases to amaze me how many posts refer to 'it won't settle because it's too wet ! .No lads, it won't settle ,not because it's too wet but because it's too warm ! It can pee down with rain for 12 hours at 2C,,but as soon as the temp drops to zero ,it freezes and then settles .Bloody obvious to me.....like saying it's too cold to snow ,but we won't go there eh / RonB "Darren Prescott" wrote in message ... "Dave.C" wrote in message .uk... I know I'm getting boring but I'm sure most people are surprised it hasn't settled more! It's a theme that's cropped up on some Web based message boards as well. The only thing I can say for certain is that given heavy enough snow (of the big fluffy flake sort), it *will* settle, even if the roads are soaking wet after rain/melted snow. Until today the last time I saw that in action was the snow event in January 2004, which started with a few minutes of heavy rain which turned to heavy snow and promptly settled. Other than that, there's got to be an obvious reason why the snow's having such trouble settling in this spell. I'd be tempted to say it's the radiation absorbed during the day that's causing it to melt so quickly, but that wouldn't apply to snow falling early in the day. |
#33
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We know that Ron. What we're saying, and I can't believe you've never seen
it, that heavy snow, whacking big flakes, with air temp around 0.5C - 1.0C is not only failing to settle on the ground but also on already lying snow. (although last one is from Darren!). Air is often is above freezing when snow settles. Still think it's under soil heating! Anyway lets hope this next burst does better for whatever reason. Dave "Ron Button" wrote in message ... It never ceases to amaze me how many posts refer to 'it won't settle because it's too wet ! .No lads, it won't settle ,not because it's too wet but because it's too warm ! It can pee down with rain for 12 hours at 2C,,but as soon as the temp drops to zero ,it freezes and then settles .Bloody obvious to me.....like saying it's too cold to snow ,but we won't go there eh / RonB "Darren Prescott" wrote in message ... "Dave.C" wrote in message .uk... I know I'm getting boring but I'm sure most people are surprised it hasn't settled more! It's a theme that's cropped up on some Web based message boards as well. The only thing I can say for certain is that given heavy enough snow (of the big fluffy flake sort), it *will* settle, even if the roads are soaking wet after rain/melted snow. Until today the last time I saw that in action was the snow event in January 2004, which started with a few minutes of heavy rain which turned to heavy snow and promptly settled. Other than that, there's got to be an obvious reason why the snow's having such trouble settling in this spell. I'd be tempted to say it's the radiation absorbed during the day that's causing it to melt so quickly, but that wouldn't apply to snow falling early in the day. |
#34
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![]() "Philip Eden" philipATweatherHYPHENukDOTcom wrote in message ... "Jonathan Stott" wrote in message ... 75 minutes of moderate snow with fairly large flakes has produced no more accumulation - temperature 0.8C but RH at 89%. Don't know how the snow last night managed to accumulate on the roads at all! Jonathan, or anyone, do you have any information about snowdepths over the East Kent Snowtrap (i.e. the North Downs between Canterbury, Dover, Folkestone and Ashford)? Someone told me that there was "about six inches" this morning. That "about" worries me. If it was the average of several measurements then fine, I'll accept it, but if it was an estimate then I would divide by two or three because people always grossly over- estimate snow-depths. Estimate :-O Don't people have rulers ? All mine are *measured*. Will. -- |
#35
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![]() "Philip Eden" philipATweatherHYPHENukDOTcom wrote in message ... "Jonathan Stott" wrote in message ... 75 minutes of moderate snow with fairly large flakes has produced no more accumulation - temperature 0.8C but RH at 89%. Don't know how the snow last night managed to accumulate on the roads at all! Jonathan, or anyone, do you have any information about snowdepths over the East Kent Snowtrap (i.e. the North Downs between Canterbury, Dover, Folkestone and Ashford)? Someone told me that there was "about six inches" this morning. That "about" worries me. If it was the average of several measurements then fine, I'll accept it, but if it was an estimate then I would divide by two or three because people always grossly over- estimate snow-depths. Estimate :-O Don't people have rulers ? All mine are *measured*. Will. -- |
#36
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![]() "Philip Eden" philipATweatherHYPHENukDOTcom wrote in message ... "Jonathan Stott" wrote in message ... 75 minutes of moderate snow with fairly large flakes has produced no more accumulation - temperature 0.8C but RH at 89%. Don't know how the snow last night managed to accumulate on the roads at all! Jonathan, or anyone, do you have any information about snowdepths over the East Kent Snowtrap (i.e. the North Downs between Canterbury, Dover, Folkestone and Ashford)? Someone told me that there was "about six inches" this morning. That "about" worries me. If it was the average of several measurements then fine, I'll accept it, but if it was an estimate then I would divide by two or three because people always grossly over- estimate snow-depths. Estimate :-O Don't people have rulers ? All mine are *measured*. Will. -- |
#37
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![]() "Philip Eden" philipATweatherHYPHENukDOTcom wrote in message ... "Jonathan Stott" wrote in message ... 75 minutes of moderate snow with fairly large flakes has produced no more accumulation - temperature 0.8C but RH at 89%. Don't know how the snow last night managed to accumulate on the roads at all! Jonathan, or anyone, do you have any information about snowdepths over the East Kent Snowtrap (i.e. the North Downs between Canterbury, Dover, Folkestone and Ashford)? Someone told me that there was "about six inches" this morning. That "about" worries me. If it was the average of several measurements then fine, I'll accept it, but if it was an estimate then I would divide by two or three because people always grossly over- estimate snow-depths. Estimate :-O Don't people have rulers ? All mine are *measured*. Will. -- |
#38
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![]() "Darren Prescott" wrote in message ... "Dave.C" wrote in message .uk... I know I'm getting boring but I'm sure most people are surprised it hasn't settled more! It's a theme that's cropped up on some Web based message boards as well. The only thing I can say for certain is that given heavy enough snow (of the big fluffy flake sort), it *will* settle, even if the roads are soaking wet after rain/melted snow. Until today the last time I saw that in action was the snow event in January 2004, which started with a few minutes of heavy rain which turned to heavy snow and promptly settled. Other than that, there's got to be an obvious reason why the snow's having such trouble settling in this spell. I'd be tempted to say it's the radiation absorbed during the day that's causing it to melt so quickly, but that wouldn't apply to snow falling early in the day. I first noticed this on Monday when there was a reasonable amount of sun, then during the evening the first snow that gave a covering arrived. Snow struggled to settle on the pavement across the street that would have been in sun but settled without fuss on the other side that wouldn't get any sun at all. I was wondering about this at the time and this seems to explain it. Even the 1cm covering I had this morning was quickly removed by the sun, even though there hasn't been that much of it. Somebody else said that quite a lot on isolation gets through cloud. Given a max of just 1.9C today that tells you just how powerful the sun is at this time of year compared to at the solstice. Col -- Bolton, Lancashire. 160m asl. http://www.reddwarfer.btinternet.co.uk http://www.reddwarfer.btinternet.co....rPictures.html |
#39
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![]() "Darren Prescott" wrote in message ... "Dave.C" wrote in message .uk... I know I'm getting boring but I'm sure most people are surprised it hasn't settled more! It's a theme that's cropped up on some Web based message boards as well. The only thing I can say for certain is that given heavy enough snow (of the big fluffy flake sort), it *will* settle, even if the roads are soaking wet after rain/melted snow. Until today the last time I saw that in action was the snow event in January 2004, which started with a few minutes of heavy rain which turned to heavy snow and promptly settled. Other than that, there's got to be an obvious reason why the snow's having such trouble settling in this spell. I'd be tempted to say it's the radiation absorbed during the day that's causing it to melt so quickly, but that wouldn't apply to snow falling early in the day. I first noticed this on Monday when there was a reasonable amount of sun, then during the evening the first snow that gave a covering arrived. Snow struggled to settle on the pavement across the street that would have been in sun but settled without fuss on the other side that wouldn't get any sun at all. I was wondering about this at the time and this seems to explain it. Even the 1cm covering I had this morning was quickly removed by the sun, even though there hasn't been that much of it. Somebody else said that quite a lot on isolation gets through cloud. Given a max of just 1.9C today that tells you just how powerful the sun is at this time of year compared to at the solstice. Col -- Bolton, Lancashire. 160m asl. http://www.reddwarfer.btinternet.co.uk http://www.reddwarfer.btinternet.co....rPictures.html |
#40
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![]() "Darren Prescott" wrote in message ... "Dave.C" wrote in message .uk... I know I'm getting boring but I'm sure most people are surprised it hasn't settled more! It's a theme that's cropped up on some Web based message boards as well. The only thing I can say for certain is that given heavy enough snow (of the big fluffy flake sort), it *will* settle, even if the roads are soaking wet after rain/melted snow. Until today the last time I saw that in action was the snow event in January 2004, which started with a few minutes of heavy rain which turned to heavy snow and promptly settled. Other than that, there's got to be an obvious reason why the snow's having such trouble settling in this spell. I'd be tempted to say it's the radiation absorbed during the day that's causing it to melt so quickly, but that wouldn't apply to snow falling early in the day. I first noticed this on Monday when there was a reasonable amount of sun, then during the evening the first snow that gave a covering arrived. Snow struggled to settle on the pavement across the street that would have been in sun but settled without fuss on the other side that wouldn't get any sun at all. I was wondering about this at the time and this seems to explain it. Even the 1cm covering I had this morning was quickly removed by the sun, even though there hasn't been that much of it. Somebody else said that quite a lot on isolation gets through cloud. Given a max of just 1.9C today that tells you just how powerful the sun is at this time of year compared to at the solstice. Col -- Bolton, Lancashire. 160m asl. http://www.reddwarfer.btinternet.co.uk http://www.reddwarfer.btinternet.co....rPictures.html |
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