S45 June 29th, 2012 Derecho: Radar Analysis

Sunday, 22 January 2017
4E (Washington State Convention Center )
Marshall Pfahler, Ohio University, Athens, OH; and J. Crookston

June 29th, 2012 Derecho: Radar Analysis

The June 29th, 2012 Derecho, also known as the “The Ohio Valley/ Mid-Atlantic Derecho,” was one of the most prominent and damaging quasi-linear convective systems of the last decade. This complex initialized in the early afternoon hours of the 29th in northern Illinois due to a highly-unstable atmosphere downstream and favorable upper-level dynamics in place. As the complex grew upscale and traversed the lower Great Lakes and Mid-Atlantic states, it left record-breaking wind gusts and a path of damage over 700 miles long in its wake.

The purpose of this project is to examine the derechos propogation as it reached its greatest maturity from eastern Indiana into central/southern Ohio using radar imagery and dual pol data. Investigations will revolve around the correlations between reflectivity patterns and severe wind reports. Vertical circulations will also be evaluated with the convective squall line. Data used in the project will include National Weather Service Level II archived radar data analyzed by GR2Analyst as well as Storm Prediction Center storm reports.
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