EF0 Tornado - Montgomery County
September 22, 2011

A cold front approached the region from the Great Lakes and became stationary across western New York early Thursday evening, September 22nd. Tropical moisture was being drawn into the area ahead of the boundary and diurnal instability was present.

Public Information Statement with details

Surface Map 5 pm Sep 22, 2011
Surface Map 5 pm EDT Sep 22, 2011		 Surface Map 8 pm Sep 22, 2011
Surface Map 8 pm EDT Sep 22, 2011

500 mb Map 8 am Sep 22, 2011
500 mb Map 8 am EDT Sep 22, 2011		 500 mb Map 8 am Sep 23, 2011
500 mb Map 8 am EDT Sep 23, 2011