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The July 20, 1988 thunderstorms in southern Minnesota: an example of strong synoptic scale forcing
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1989
[PDF-6.24 MB]
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Description:With the increased emphasis on putting more resolution into the local forecast, forecasters may tend to look for clues in the mesoscale; whereas, the answer may lie in the synoptic scale. This may be true even in the doldrum days of mid summer. In this paper, a case is presented in which the synoptic scale overwhelmed mesoscale influences; yet detail could still be added to the forecast by being familiar with the cloud distribution model associated with a vorticity maximum as described by (Weldon, 1983) . More importantly, the forecaster can avoid wrongly updating a forecast (to agree with observed conditions) simply because radar shows the echoes to be moving away from the area of concern, by being aware of Weldon's model.
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Rights Information:Public domain
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