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Overview

July 2021 was exceptionally wet across all of eastern New York and western New England with monthly rainfall totals ranging from six to as much as 18 inches with the highest values across southern Vermont and western Massachusetts. Several rounds of showers and thunderstorms occurred during the month leading to numerous occurrences of areal and flash flooding.

Summary of Flood Events across New York:

  • The climate site at Albany International Airport received 8.96 inches of rain during the month which made it the third wettest July on record at the time, only behind 2009 (9.91 inches) and 1871 (9.37 inches). Precipitation records date back to 1826.
  • The climate site at Glens Falls received 8.06 inches of rain during the month which made it the third wettest July on record at the time, only behind 1994 (8.31 inches) and 1996 (8.25 inches). Precipitation records date back to 1894, though there are some years with missing data.
  • There were multiple incidents of isolated flash flooding throughout the month. The Village of Fonda experienced flash flooding on two separate days as a creek north of the village overflowed its banks each time following heavy rainfall. 
  • Rensselaer County was hit hard with flash flooding from training thunderstorms on July 14. Between 2-5 inches of rain fell in just a few hours. Numerous roads and bridges were washed out or destroyed and minor damage from flooding occurred to hundreds of homes and businesses. Damage estimates were in the millions of dollars.
  • Bands of moderate to heavy rainfall set up across areas north of Interstate 90 on July 29 resulting in widespread 2 to 4 inches of rain and several reports of flash flooding. Areas hardest hit were across Saratoga and Washington counties including the towns of Argyle and Fort Edward with many roads impassable or washed out.

Summary of Flood Events across southern Vermont:

  • The climate site at Bennington received 9.48 inches of rain during the month.
  • A few incidents of isolated flash flooding occurred throughout the month including in Dummerston, Bennington and Brattleboro.
  • Bands of moderate to heavy rainfall set up across southern Vermont on July 29 resulting in widespread 2 to 5 inches of rain resulting in widespread flooding. Nearly two dozen towns in southern Vermont were listed with either minor or major impact due to flooding, according to Vermont Emergency Management, with damage estimates ranging from less than $10,000 to more than $200,000 each. Numerous roads or culverts were closed or washed out. About 350 individuals were reported to be isolated individuals due to main road washouts around their home. Over $5 million in damages to public infrastructure was identified by Vermont officials, including costs to repair public roads and bridges as well as debris removal. Moderate flooding occurred along portions of the Saxtons River on July 30.

Summary of Flood Events across western Massachusetts:

  • The climate site at Pittsfield received 10.60 inches of rain during the month.
  • Widespread flash flooding occurred on July 18. Numerous roadways were closed in Lenox, Richmond, Lee, Otis, Becket and Pittsfield.

Summary of Flood Events across northwestern Connecticut:

  • Scattered showers and thunderstorms on July 17 resulted in flash flooding across some communities including New Milford, Watertown, Sharon and North Canaan. 
  • Minor river flooding occurred along portions of the Housatonic River during the month including at Falls Village (3 events) and Gaylordsville (2 events).
     
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