UW Overshooting Top Algorithm Hits Storm Prior to Springfield, MA Tornado

Yesterday, 1 June 2011, climatologically rare tornadoes hit New England. The University of Wisconsin Overshooting Top algorithm identified an overshooting top with a severe thunderstorm at 2002 UTC 1 June 2011, just west of Springfield, MA (right). The overshooting top magnitude is filled atop the GOES visible imagery. The overshooting top identification occurred 28 minutes ahead of the first tornado report in Westfield, MA at 2030 UTC (a western suburb of Springfield).