A Life History of an Intense Mesoscale Convective Storm in Oklahoma

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Abstract
A simple automated objective analysis scheme is developed to analyze upper air sounding data from the National Severe Storm Laboratory mesonetwork. This scheme uses a combination of Cressman' successive correction technique and cubic spline curve fitting. This scheme is applied to a squall line case that occurred on 8 June 1966 along the confluent line where and air from the desert southwest was brought into juxtaposition with moist air from the Gulf of Mexico. The first radar echoes were detected at about 1600 CST and a nearly continuous band was formed by 1830. At 2000 the intense squall line became disorganized and it dissipated by 2300. Serial sounding were started at 1400 and continued until 2300. The analysis results indicate that a well–defined narrow band of convergence (and consequently upward motion) with a width of about 100 km was present at low levels prior to the appearance of first radar echoes. The location and orientation of the line of maximum upward motion and of the subsequent... Abstract A simple automated objective analysis scheme is developed to analyze upper air sounding data from the National Severe Storm Laboratory mesonetwork. This scheme uses a combination of Cressman' successive correction technique and cubic spline curve fitting. This scheme is applied to a squall line case that occurred on 8 June 1966 along the confluent line where and air from the desert southwest was brought into juxtaposition with moist air from the Gulf of Mexico. The first radar echoes were detected at about 1600 CST and a nearly continuous band was formed by 1830. At 2000 the intense squall line became disorganized and it dissipated by 2300. Serial sounding were started at 1400 and continued until 2300. The analysis results indicate that a well–defined narrow band of convergence (and consequently upward motion) with a width of about 100 km was present at low levels prior to the appearance of first radar echoes. The location and orientation of the line of maximum upward motion and of the subsequent...