 A mesoscale precipitation discussion concerning flooding across portions of the Northeastern United States issued by the Weather Prediction Center on September 11, 2023 | |
| Cause | Heavy rains |
|---|---|
| Meteorological history | |
| Duration | September 8 – September 13, 2023 |
| Flood | |
| Maximum rainfall | 9.5 in (240 mm) in Leominster, Massachusetts |
| Tornado outbreak | |
| Tornadoes | 4 |
| Maximum rating | EF1 tornado |
| Overall effects | |
| Fatalities | 2 |
| Injuries | Several |
| Damage | $65.9 million |
| Areas affected | Massachusetts, Rhode Island, Connecticut, New Jersey, Maryland |
In a six-day period from September 8 to September 13, 2023, slow-moving thunderstorms associated with a low-pressure area caused flash flooding across multiple states across the Northeastern and Mid-Atlantic regions of the United States. A stationary front, combined with a convergence zone, caused significant flooding, prompting the National Weather Service to issue multiple flash flood warnings and two flash flood emergencies, one for the city of Leominster, Massachusetts, and the other for the Baltimore, Maryland, area.[1][2] Several minor injuries occurred during the severe weather event, and hundreds of homes and vehicles were flooded. Evacuations also occurred after concerns of a compromised dam near a neighborhood of Leominster, and all schools in the city were closed the day after the floods.[3] Massachusetts governor Maura Healey declared a state of emergency for Leominster and North Attleborough following the floods.
- ^ Lethang, Marlene (September 12, 2023). "Massachusetts city under state of emergency after 'catastrophic' flash floods". NBC News. Retrieved September 12, 2023.
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