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Editorial Type:
Article
Article Type:
Research Article

Structure and Evolution of Winter Cyclones in the Central United States and Their Effects on the Distribution of Precipitation. Part III: The Development of a Squall Line Associated with Weak Cold Frontogenesis Aloft

John D. Locatelli 1 , Jonathan E. Martin 1 , Jeffrey A. Castle 1 , and Peter V. Hobbs 1
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  • 1 Atmospheric Sciences Department, University of Washington, Seattle, Washington
Print Publication:
01 Sep 1995
DOI:
https://doi.org/10.1175/1520-0493(1995)123<2641:SAEOWC>2.0.CO;2
Page(s):
2641–2662
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Abstract

From 8 to 9 March 1992 cold frontogenesis aloft (CFA), which was associated with the development of a vigorous baroclinic wave, triggered a series of squall lines that produced large hail and several tornadoes as they moved across the central United States. The air lifted by the CFA, which produced the squall lines, was made potentially unstable as a result of the circulation associated with a surface drytrough. This study provides further support for the view that in winter and early spring CFA plays an important role in triggering severe weather in the central United States.

Abstract

From 8 to 9 March 1992 cold frontogenesis aloft (CFA), which was associated with the development of a vigorous baroclinic wave, triggered a series of squall lines that produced large hail and several tornadoes as they moved across the central United States. The air lifted by the CFA, which produced the squall lines, was made potentially unstable as a result of the circulation associated with a surface drytrough. This study provides further support for the view that in winter and early spring CFA plays an important role in triggering severe weather in the central United States.

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