I live in NW U.K., NI. We have a strong northerly event coming in (-12c 850hPa).
Northerlies are a mixed bag here, in that they bring a variety of frozen precipitation. What do I mean?
Well in the past we have had mostly hail showers, mostly snow showers, and on other occasions we have had graupel showers that turned to snow.
As an example, here is a northwesterly flow that we had about two weeks ago… as you can see the precipitation is alternating between graupel and snow.
I am interested in knowing what determines the type of frozen precipitation in a subzero air stream. Is there anyway that I could look at a skew t chart to do this?
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