WW2010
University of Illinois

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Common Freezing Rain Sounding
useful when forecasting freezing rain

Soundings are the most important tool for identifying potential freezing rain regimes. Three types of soundings can lead to freezing rain and the most common consists of a shallow layer of cold air at the surface with a depth of about 600 meters (1,800 feet).


Above the cold air is a layer of warmer air with a depth of about 1,400 meters (4,200 feet). Winds near the surface are usually east or southeasterly, then veer around to the southwest in the warm air, and finally become westerly in upper levels. The sounding given above represents only an average case.


Terms for using data resources. CD-ROM available.
Credits and Acknowledgments for WW2010.
Department of Atmospheric Sciences (DAS) at
the University of Illinois at Urbana-Champaign.