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Approximations to the peak surface wind gusts from desert thunderstorms
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1982
[PDF-938.69 KB]
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Description:Simple procedures for estimating the peak surface wind gusts from desert thunderstorms are proposed. The fundamental assumption is that the peak surface wind gust is related to the difference ([delta]T) between the maximum ambient air temperature attained prior to the thunderstorm and the minimum temperature of the cooler air generated by the thunderstorm downdraft. A total of 49 independent cases are analyzed statistically. Six different regression equations are developed. The simplest and perhaps the most useful expression suggests that the range of the peak gust can be calculated as (15 +[delta]T) ± 12 mph with 90 percent confidence, provided [delta]T is forecast perfectly.
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Rights Information:Public Domain
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