July 2023 Northeastern United States floods
Map of rainfall accumulations in the NWS Burlington's area of responsibility (Vermont and far northeastern New York) for the period July 9–11 | |
| Cause | Heavy rains |
|---|---|
| Meteorological history | |
| Duration | July 9, 2023 – July 29, 2023 |
| Flood | |
| Maximum rainfall | 10.49 in (266 mm) in Putnam Valley, New York on July 10 |
| Overall effects | |
| Fatalities | 11 |
| Damage | $2.2 billion (2023 USD) |
| Areas affected | Northeastern United States (particularly New York and Vermont) |
In July 2023, multiple rounds of heavy rainfall led to a destructive and significant flash flood event occurring in the Northeastern United States beginning from July 9 to 29, 2023. The floods were caused by slow-moving showers and thunderstorms that produced heavy rainfall and flooding over areas that were already saturated by rainfall that took place several weeks prior, especially across the Northeastern and Mid-Atlantic regions. However, the heaviest and most destructive flash flooding was concentrated around northern New England, especially Vermont and New York as widespread rain amounts of 6 inches (150 mm) fell in the two states on July 9–11. Additionally, downtown Montpelier, Vermont was flooded, along with numerous state roads being closed as a result of it; the highest rainfall total from the event was centered in Putnam Valley, New York, with 10.49 inches (266 mm). Across the affected areas, numerous roads and bridges were washed out, and dozens of water rescues were conducted. Transportation service was impacted by the heavy rainfall and flooding, including Amtrak in New York and Vermont and Boston's MBTA subway. The flash floods caused 11 fatalities across several states at least $2.2 billion in damage. The event was known as the Great Vermont Flood of 10–11 July 2023 by the National Weather Service in Burlington, Vermont after its significant impacts in the state on the respective dates.