Severe storms cause flooding and tornado damage in New York, New Jersey and Delaware

Severe storms cause flooding and tornado damage in New York, New Jersey and Delaware

The National Weather Service said heavy rain and strong winds August 20, triggered flooding, stranded motorists and power outages across New York, New Jersey and Delaware, and a tornado struck Dover, Delaware, prompting officials to declare a state of emergency and close roads. Earlier that evening, local officials reported the tornado hit Dover shortly after 6 p. m.

, causing extensive damage, knocking down trees, disrupting traffic and leaving many without power, which led to the emergency declaration. The severe storm system also produced flash flooding and travel disruptions throughout the broader Northeast region.

Actors

National Weather Service (Mount Holly office) Dover Police Department first-responders utility crews local officials

Locations

Dover, Delaware, United States Mount Holly, New Jersey, United States

Articles

August 21, 2026
6 total
Tornadoes and flash floods strike Long Island and Dover, prompting rescues and closures
Tornadoes and flash floods strike Long Island and Dover, prompting rescues and closures

The Guardian • 21 Aug 16:16

Tornadoes touched down on Long Island, New York, and in Dover, Delaware, amid heavy rain, causing damage to beach clubs and buildings, while flash flooding stranded motorists and forced road closures.

Credibility 72% Manip. 9% Center
Tornadoes Reported in New York and Delaware Amid Severe Storms
Tornadoes Reported in New York and Delaware Amid Severe Storms

BBC • 21 Aug 14:35

Tornadoes touched down in New York and Delaware as heavy rain and strong winds battered the Mid-Atlantic region.

Credibility 32% Manip. 9% Center
Severe storms cause flooding, power outages and possible tornadoes in the Northeast
Severe storms cause flooding, power outages and possible tornadoes in the Northeast

AP News • 21 Aug 04:56

Heavy rain and strong winds on Thursday triggered flooding, stranded motorists and power outages across New York, New Jersey and Delaware, with officials reporting possible tornadoes and extensive property damage.

Credibility 78% Manip. 8% Center
Tornado causes significant damage in Dover, Delaware amid Northeast severe storm outbreak
Tornado causes significant damage in Dover, Delaware amid Northeast severe storm outbreak

ABC News - Breaking News, Latest News and Videos • 21 Aug 03:02

A likely tornado struck Dover, Delaware on Thursday evening, causing extensive damage and prompting a state of emergency, while severe storms and flash flooding affected the broader Northeast region.

Credibility 78% Manip. 8% Center
Dover Declares State of Emergency After Tornado Causes Widespread Damage
Dover Declares State of Emergency After Tornado Causes Widespread Damage

6abc Philadelphia • 21 Aug 02:35

A tornado that touched down Thursday night prompted Dover officials to declare a state of emergency as crews address downed trees, flooded roads and structural damage across the city.

Credibility 72% Manip. 8% Center
Tornado Hits Dover, Delaware, Prompting State of Emergency
Tornado Hits Dover, Delaware, Prompting State of Emergency

FOX Weather • 21 Aug 00:04

A tornado struck Dover shortly after 6 p.m. on Thursday, causing extensive damage, power outages and traffic disruptions, leading officials to declare a state of emergency.

Credibility 72% Manip. 7% Center