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Scholars Day 2007, Wednesday, April 11

Gust Front Interactions With Thunderstorms

Gust fronts are the leading edge of cold, evaporatively cooled air from thunderstorms. They separate the thunderstorm circulation from environmental air. Typically this is seen as an advancing “fine line”: echo from the parent storm. Behind the gust front, there is typically a strong winds at or near the ground. Gust fronts often advance from the parent storm and initiate new storms or interact with the parent or other storms. Previous studies have suggested the interaction of the gust front and thunderstorm circulations as a possible cause for the onset of severe weather. Using Doppler radar data, fine line echoes were used to identify and track thunderstorm gust fronts during warm season convective storms. Reports of severe weather were compared to the proximity of the gust front and environmental parameters to determine whether the gust front was associated with the onset of the severe weather.

Presenter: Allison Vegh (Undergraduate Student)
Topic: Earth Science
Location: 306 Lennon
Time: 10:15 am (Session I)