Morning glory wave clouds in Oklahoma: a case study.

Abstract

Early in the morning on 9 June 1982 a system of traveling wave cloud lines passed over Oklahoma, and in particular, over the relatively dense mesonetwork of surface stations, including the instrumented 444 m KTVY television tower, operated by the U.S. National Severe Storms Laboratory. An analysis of the network and other data presented herein shows that, in structure, the associated disturbance was an internal undular bore propagating on a low- level stable layer, similar to 'morning glory'-type disturbances, which are common at certain times of the year in parts of northern Australia. Moreover, the speed of propagation of the component bore-waves is in broad agreement with theoretical calculations. -from Authors