MadSci Network: Earth Sciences
Query:

Re: how is hail formed?

Date: Sat Mar 20 14:02:15 1999
Posted By: Liz Owens, Undergraduate, Elementary Education, Lebanon Valley College
Area of science: Earth Sciences
ID: 921805211.Es
Message:

Dillon,
Sometimes raindrops are picked up by a srtong up-blowing wind, long before 
they reach the ground.  They are flung high up where the air is cold 
enough to freeze them into drops of ice.  When they fall, more water 
condenses around each ice drop.  They are blown up again, so that in the 
icy cold upper air a new layer of ice freezes around the old.  They fall 
toward the warmer air, pick up another layer of water, and are again blown 
upward to freeze still another layer of ice around the last.  Again and 
again they fall and are blown upward.  Again and again a new layer of ice 
is added.  Finally, when they are too heavy for the up-blowing wind, they 
come to the ground as hail.

Hope this answers your question, Dillon.  I got this information from a 
book called Everyday Weather and How it Works, by Herman Schneider.  You 
can get it from the library if you want to read more about hail or any 
other weather topics.

Have a great day!
Liz Owens


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