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WFO BTV Top 10 Weather Events of 2000 to 2009
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2.) Snow and Downslope Windstorm - 16 April 2007
An intense late season nor'easter (minimum sea-level pressure around 966 mb over Long Island, Fig. 2-1) produced over a foot of heavy wet snow in the higher elevations across the North Country and localized damaging winds over Vermont and northern New York on 15-16 April 2007. Particularly hard hit was the city of Rutland, Vermont, where strong easterly downslope winds resulted in widespread damage including uprooted trees and downed power lines beginning at approximately 16/1130 UTC (730 am EDT). The number of city owned trees downed were about 100, while over 1000 privately owned trees in the city were damaged, including towering maples and elms. The primary power utility in the Region, Central Vermont Public Service Corporation, reported nearly 60,000 customers without power, including around 19,000 outages in Rutland due to the high winds. On 18 April, a 400-foot broadcast tower operated by Mountain Lake PBS atop Lyon Mountain near Dannemora, New York collapsed, likely a delayed response from heavy snow build up and high wind from the storm two days earlier, causing a weakening of the structure. It took until early October for the tower to be rebuilt and normal transmission restored.

A total of eight counties in Vermont received a Federal Disaster declaration, with 3.6 million dollars in federal funds obligated to help in recovery efforts. Essex County, NY was also declared a Federal Disaster Area due to this storm. The Internal Revenue Service extended the filing deadline for federal income taxes by two days for citizens impacted by the storm. A peak wind gust of 156 mph (136 kt or 69.7 m/s) out of the East was recorded atop Mount Washington, NH at 1036 am EDT (1436 UTC), only the third time in the preceding ten years that a gust of that magnitude had been measured at the site. A peak gust of 52 knots (60 MPH) was recorded at the Morrisville, VT ASOS (KSLK) at 16/1742 UTC.
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Figure 2-1. HPC surface analysis valid at 15 UTC (11am EDT) on April 16, 2007. The Ambrose Tower (ALSN6) reported a sea-level pressure value of 966.7 mb. The lowest land reading of 968.3mb was at JFK airport at 951 UTC (551 am EST).


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