National Weather Service meteorologist Steve DiRienzo says the tornado was about a half-mile wide and on the ground for more than 10 minutes Sunday evening. Amateur video posted on YouTube shows a dark funnel cloud crossing the New York Thruway, where it knocked down trees.
DiRienzo said Monday the tornado traveled almost 4 miles along the Mohawk River from Amsterdam to West Glenville. Trees and power lines were knocked down, parts of some roofs were torn off and windows blown out. There were no reports of serious injuries.
Most of the damage was in Montgomery County, already eligible for federal disaster assistance after Irene.