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Severe Thunderstorms About 10% of thunderstorms become severe Hail 3/4 inch or greater in diameter 58 mph or greater winds Damage to structures Tornadoes Severe Weather can happen anytime of year December 1, 2006 Severe Weather Outbreak May 24, 2004 Derecho widespread and long lived windstorm that is associated with a band of rapidly moving showers and/or thunderstorms. Labor Day 1998 & July 14-15, 1995 Glossary of Weather Terms Lightning - JetStream Local Severe Weather Page Severe Thunderstorm Climatology - NSSL Severe Thunderstorm Events - SPC Severe Weather Climatology - SPC Storm Data - NCDC Storm Reports (Current & Past) - SPC Thunderstorms - JetStream Public Information Statement

Tornadoes About 1000 tornadoes occur in the U.S. each year About 60 people die each year 2007 Tornado Fatality Information - SPC Enhanced Fujita (EF) Tornado Damage Scale - SPC Frequently Answered Questions about Tornadoes - SPC Monthly Tornado Statistics -SPC Oldest Known Photograph of a Tornado Storm Data - NCDC Storm Reports (Current & Past) - SPC Tornado Climatology - NCDC Tornadoes - JetStream U.S. Tornado & Severe Weather Data - NCDC Links to Specific Tornado Events - SPC Public Information Statement State # Tornadoes #Deaths #Injuries Connecticut 84 4 700# Massachusetts 154 102* 1358* New York 354 21 306^ Vermont 37 0 10 January 1950 - November 2007 National Climatic Data Center # October 3, 1979 F4 Hartford, CT 500 injuries (deaths 3) * June 9, 1953 F4 Worcester, MA 90 deaths & 1228 injuries ^ May 31, 1998 F3 Ushers, NY 68 injuries (0 deaths) County #Tornadoes #Deaths #Injuries Last Occurrence Connecticut Litchfield 22 0 34 June 16, 2002 New York Albany 7 0 15 May 31, 1998 Columbia 8 0 8 July 21, 2003 Dutchess 11 0 0 June 25, 2006 Fulton 8 0 1 August 3, 2004 Greene 5 0 8 July 21, 2003 Hamilton 4 0 1 Sept. 3, 1993 Herkimer 5 1 5 August 4, 1992 Montgomery 4 0 0 May 1, 2003 Rensselaer 9 0 1 July 21, 2003 Saratoga 8 0 69 May 31, 1998 Schenectady 2 0 9 August 21, 1971 Schoharie 2 0 20 May 2, 1992 Ulster 11 0 3 May 18, 2000 Warren 2 0 0 April 18, 1985 Washington 4 0 1 August 21, 1994 Massachusetts Berkshire 17 7 60 June 29 , 2005 Vermont Bennington 6 0 1 July 21, 2003 Windham 4 0 0 July 21, 2003 January 1950 - November 2007 National Climatic Data Center

Flooding Flash flooding is the #1 cause of deaths associated with thunderstorms Flood Information Page Hydrology Page Major Flood Events Flooding end of June 2006 Significant River Flooding Outlook National Flood Insurance Program Advanced Hydrologic Prediction Service Albany NY Binghamton NY Buffalo NY Burlington VT New City City/Upton NY Public Information Statement

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