A Case Study of the Severe Weather Threat to the Middle Atlantic Region on June 26th, 1988

During the morning of June 26th, 1988, the Severe Weather Checklist used at the WSFO at Philadelphia indicated the potential of severe weather over southern New Jersey during the afternoon hours. By late morning however, the Southern Region Mesoscale Program indicated that the severe weather threat was shifting south to Virginia, and that thunderstorm development in southern New Jersey would be suppressed. The purpose of this paper is to examine the meteorological parameters which helped to shift the severe weather threat area south of the Philadelphia forecast area.