Heavy Rain in Connecticut

Events

126

Deaths

4

Injuries

2

Damage

$119,000

• Flash Flooding and Flooding in Connecticut, October 1, 20102 deaths · 7 eventsLow pressure tracked up the east coast and interacted with a stalled frontal boundary and approaching upper level low pressure system.
• Heavy Rain in Connecticut, August 20 to 21, 19972 deaths · 2 eventsA low pressure system developed over the lower Midwest on Wednesday, August 20th. As it moved slowly east-northeast, it intensified. The low passed over Pennsylvania and moved south of Long Island during Thursday morning.The low produced heavy rain and strong gusty winds.
• Flash Flooding and Heavy Rain in Connecticut, September 16 to 18, 19991 death · $1.3 million · 4 eventsTorrential record rainfall, which caused serious widespread urban, small stream, and river flooding, preceded the remnants of Hurricane Floyd, which passed over Western Suffolk County of Long Island around 8 pm and across Central Connecticut from 9 pm to 11 pm on the 16th.Death:…
• Flooding and Heavy Rain in Connecticut, March 13 to 15, 20101 death · $200,000 · 4 eventsA Nor'easter developed off the Delmarva peninsula which produced an extended period of heavy rainfall across the area as it tracked very slowly to the northeast. This caused widespread flooding across portions of New London County.
• Flooding and Heavy Rain in Connecticut, March 28 to 31, 20101 injured · $11 million · 21 eventsA Nor'easter centered off the Delmarva coast produced an extended period of heavy rainfall across the area as it tracked very slowly to the northeast. This caused widespread flooding across portions of Southern Connecticut. Major flooding occurred in New London County.
• Flash Flood and Heavy Rain in Connecticut, August 29, 1997$500,000 · 2 eventsA cold front moving very slowly across Connecticut caused an area of showers and thunderstorms that produced intense rainfall amounts of 3 to 6 inches in 1 to 3 hours across parts of Hartford County.
• Tornado and Flash Flooding in Connecticut, August 19, 2021$178,000 · EF0 · 9 eventsThe remnants of Tropical Storm Fred moved across Southern New England producing heavy rain, gusty winds, and two tornadoes - one that moved from northeast Connecticut into Worcester County and another in central Worcester County.
• Flash Flooding and Hail in Connecticut, July 1, 2009$70,000 · 0.75 in hail · 10 eventsAn occluded front coupled with shortwave energy moving through associated with a vigorous upper low over the Great Lakes, combined to produce an isolated severe thunderstorm over New London County, CT. Training of cells also caused severe flash flooding.
• Flood and Heavy Rain in Connecticut, September 6, 2008$100,000 · 2 eventsThe remnants of tropical cyclone Hanna, interacted with an approaching cold front from the west, leading to widespread heavy rainfall across the mid Hudson Valley of eastern New York and southwest New England during Saturday September 6th, and ending by early Sunday morning on…
• Heavy Rain in Connecticut, November 13, 20092 injured · $12,000 · 2 eventsThe remnants of Ida produced heavy rain across Southwest Connecticut on 11/13/09, causing vehicles to hydroplane, producing 2 accidents with injuries. The heavy rain combined with gusty winds also downed a tree as well.
• Flash Flood and Hail in Connecticut, June 26, 2009$14,000 · 61 kt wind · 13 eventsA shortwave rotating around a deep upper trough over New England acted on warm humid air in place at the surface to allow for supercell thunderstorms to form and track across CT.
• Flash Flooding and Flooding in Connecticut, September 16 to 19, 199911 eventsTropical Storm Floyd brought torrential rainfall and strong winds to northern Connecticut, as it tracked up the Connecticut River valley into central Massachusetts.
• Flash Flooding and Flood in Connecticut, March 8 to 12, 19989 eventsA powerful storm system moving slowly northeast from the Ohio Valley to the eastern Great Lakes brought strong winds and heavy rainfall to Connecticut, which resulted in urban street flooding, basement flooding, small stream flooding, and main stem river flooding.
• Flood and Heavy Rain in Connecticut, March 28 to 29, 20055 eventsA strong low pressure system developed across the Southeast U.S. and moved slowly north to northeast along the eastern seaboard to a position just south of Long Island during Saturday morning, March 29th.Heavy rain developed and spread northeast across the region.
• Heavy Rain in Connecticut, November 26, 19964 eventsA low pressure system over the southcentral United States on Monday, November 25th moved northeast and passed over the local region during Tuesday morning, November 26th.
• Heavy Rain in Connecticut, December 1 to 2, 19964 eventsA low pressure system over the Ohio Valley early Sunday morning on December 1st, intensified as it moved northeast across Eastern Canada during early Monday morning.
• Heavy Rain in Connecticut, September 16 to 18, 19964 eventsThe remnants of Pacific Hurricane Fausto moved from Mexico northeast and reformed into a large coastal storm off the DelMarVa Coast on Tuesday morning, September 17th.
• Heavy Rain in Connecticut, October 8 to 9, 19964 eventsThe remnants of Tropical Storm Josephine moved rapidly northeast off the Atlantic Coast during Tuesday, October 8th.
• Heavy Rain in Connecticut, July 24 to 25, 19974 eventsAs a strong warm front moved slowly north toward the area, a long period of heavy rain occurred over the area. In addition, the area was impacted by the fringe effects from Tropical Storm Danny.
• Heavy Rain in Connecticut, November 7 to 9, 19974 eventsWith a strong high pressure system extending from north of New England southwest across the Great Lakes, a low pressure system formed off the Southeast Coast during Thursday, November 6th.
• Heavy Rain in Connecticut, June 13 to 14, 19984 eventsA low pressure system over the Great Lakes on Saturday, June 13th moved southeast and redeveloped just south of New York City Sunday morning, June 14th.
• Heavy Rain in Connecticut, May 9 to 10, 19984 eventsA slow moving storm moved south and east of the Mid-Atlantic Coast from Friday, May 8th through Monday, May 11th.Measurable rain developed across the region during Friday, May 8th.
• Flood and Heavy Rain in Connecticut, May 9 to 13, 19984 eventsA strong low pressure system to the south and southeast of Cape Cod combined with high pressure over eastern Canada to produce a 3-day nor'easter. Periods of heavy rain occurred from May 9th into May 11th. Rainfall totals of 2 to 3 inches were common.
• Flash Flood and Heavy Rain in Connecticut, February 2 to 4, 19994 eventsA combination of a nearly stationary warm front lying just southwest of Connecticut and a low pressure system approaching slowly north-northeast along the coast produced heavy rain that caused flash flooding of the Quinnipiac River at Wallingford and isolated flooding of…
• Heavy Rain in Connecticut, March 11 to 12, 20004 eventsOn Saturday, March 11th, as a high pressure system moved east of New England, a low pressure system developed over the Southeast United States. Rain developed between 7 am and 8 am and spread rapidly northeast across the region.

Heavy Rain everywhereEvery kind of event in Connecticut

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.