 Poster: A snowHead
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Just sat through a thunderstorm with full on pyrotechnic effects, all the while it was snowing ! That's a first for me - is this common ?
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Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
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No. "Thundersnow" is actually pretty rare. Cool though. 
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Well, the person's real but it's just a made up name, see?
Well, the person's real but it's just a made up name, see?
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We get at least one thunderstorm per winter here. It usually heralds the arrival of lotsa snow!
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You need to Login to know who's really who.
You need to Login to know who's really who.
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Seen it a few times, although most seem to be 1-2 claps and then plenty of snow.
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Anyway, snowHeads is much more fun if you do.
Anyway, snowHeads is much more fun if you do.
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Yeah, seen it once or twice as well. Snow falling at the rate of rain in a big thunderstorm is pretty amazing!
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You'll need to Register first of course.
You'll need to Register first of course.
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Another to say rare. And from one of my Avalanche books: very dangerous.
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Had it here in Perthshire as well it lasted quite a while, have never experienced it before and found it very strange.
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Had some this morning in Durham, just before a huge dump of snow, and it looks like the same is happening this evening. (The wind is getting up here too , and starting to blow the snow off the trees)
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You'll get to see more forums and be part of the best ski club on the net.
You'll get to see more forums and be part of the best ski club on the net.
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Had this going through Perth yesterday morning, magical 
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Just had the same here, just outside Grimsby, very strange 
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snowHeads are a friendly bunch.
snowHeads are a friendly bunch.
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Just so long as it does it in Durham over the ski club sites.
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And love to help out and answer questions and of course, read each other's snow reports.
And love to help out and answer questions and of course, read each other's snow reports.
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Amazing show 2 days in a row now! Is it an el nino year?
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La Niña this year, I thought?
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You know it makes sense.
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It is, I thought I had read, relatively rare in this country because it is caused by cold snow laden air passing over warm water. (The North Sea warmer? Whatever next?) It is on further research more complicated
"Two mechanisms are important to the creation of thundersnow and they are elevated instability and strong dynamic lifting. Each of these mechanisms reinforces the other. The CAPE or instability in the troposphere is a function of the tropospheric temperature profile and the initial temperature and dewpoint of a parcel of air. Surface Based CAPE (SB CAPE) can be zero when at the same time lifting from another pressure level produces positive CAPE. The term for convection starting at a pressure level other than the surface is termed ELEVATED_CONVECTION. It helps to have the parcel initially start with a small dewpoint depression since CAPE is more likely to occur than if the dewpoint depression is large. Keep in mind that environmental dewpoint can increase with height or may not fall that much with height. Even if no elevated CAPE is present, CAPE may still be present when lifting occurs at a slant (known as slantwise convection) .......... etc"
http://www.theweatherprediction.com/habyhints/334/
So now you know 
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Otherwise you'll just go on seeing the one name:
Otherwise you'll just go on seeing the one name:
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I knew it was something simple like that
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Poster: A snowHead
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Glad to be of service 
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Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
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Glad to be of service
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Well, the person's real but it's just a made up name, see?
Well, the person's real but it's just a made up name, see?
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More lightning.
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You need to Login to know who's really who.
You need to Login to know who's really who.
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It's been lightening/thundering/snowing loads here today and yesterday. It's like the day after tomorrow!!!
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