Lightning Characteristics in Lake-Effect Thunderstorms
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The characteristics of Great Lakes-induced storms and their cloud-to-ground (CG) lightning flashes are examined for four fall-winter seasons. These storms generally consisted of an enlarged, single band. Typically, only a few CG flashes were recorded per event. However, nearly 700 CG flashes were recorded during the very unusual 22-24 September 1983 event. About 75% of all CG flashes lowered positive charge to ground, excluding the 22-24 September 1983 event when 70% of the flashes lowered negative charge to ground. Positive and negative flashes both were predominantly single-stroked. The median peak current of positive first return strokes was +79 kA for 22-24 September 1983 and +91 kA for the remaining seven storm periods. The corresponding median peak current values for negative first return strokes were -47 kA and -44 kA, respectively. -from Authors
author list (cited authors)
Moore, P. K., & Orville, R. E.