Oh Hail No!

Posted by Kyle Brookings on Wednesday, September 26, 2018
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In some areas we are in that in-between stage where it could snow, that really cold rain.

Then in that rain we see something, it looks like ice, is that hail?

NO NO NO it is not hail, it's graupel.

Wait a minute... graupel? What's that?

Graupel is a type of precipitation that forms when supercooled water droplets are collected and freeze on falling snowflakes, forming tiny balls of rime.

Hailstones usually measure between 5 millimetres and 15 centimetres in diameter, much larger than graupel.

Hail forms in strong thunderstorm clouds, particularly those with intense updrafts, high liquid water content, great vertical extent, large water droplets, and where a good portion of the cloud layer is below freezing.

So on those cool days you are seeing graupel not hail. They are two different things.



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