Poster: A snowHead
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Afternoon all, particularly weather gurus.
We're off to Superdévoluy next weekend, so have been watching the weather forecasts on snow-forecast.com, bergfex and others. Being of an optimistic nature, I tend to believe whichever is telling me the best news, but still I'm puzzled by Bergfex's reporting of rainfall in litres (unless the 'l' means something else).
If they're forecasting a volume of rain, rather than a depth, then that must be over a fixed area mustn't it? So what's that area?
Or is there something else going on that I'm misunderstanding?
Thanks
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Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
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Litres per square meter (or mm to you & me).
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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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All is clear. Thank you @musher.
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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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This is not a unit I have ever come across before.
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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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Glad someone else asked that, bought it was just me being thick!
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You'll need to Register first of course.
You'll need to Register first of course.
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johnE wrote: |
This is not a unit I have ever come across before. |
A lot of the charts use the unit kg/m3...since a litre of pure water weighs a kilo it's much the same thing...and equates to rainfall to a depth of 1mm or snow of approximately 1cm, though freshly fallen snow can range from 50-200 kg/m3 compared to rainwater at around 1000kg/m3, so between 5 and 20 times less dense than water, depending on how damp or powdery it is.
A quick rule of thumb is: 1l/m2=1kg/m2=1mm rain=1cm snow, but in reality somewhere between 0.5 & 2cm.
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It seems to be a more European thing - all the TV weather reports in Spain do it this way - does seem a tad complicated for its own good though.
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@luigi, Ah you you do not have to say whether it is snow or rain. I see. Most of my meteology is from Africa Pakistan and India where we got no snow at all in the areas I was working in.
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