Tornado Watch Blankets Northeast as Storms Disrupt Flights, July 21

A tornado watch blanketed New York City, Philadelphia, and much of the Northeast on July 21, as severe thunderstorms swept the region with tornadoes, heavy rain, and damaging winds. The watch remained in effect until 9 p.m. Eastern Time. Over 2,500 flights were canceled and 6,200 customers lost power in New Jersey by late afternoon, while confirmed tornadoes touched down in Morris County and near Stanhope, blocking roadways with trees and debris.

Widespread flight disruptions across major airports

Air travel ground to a halt across the Northeast as over 2,500 flights were canceled and more than 6,000 delayed on July 21. The Federal Aviation Administration implemented ground stops at Boston Logan, LaGuardia, and Newark airports. Hundreds of flights were canceled at LaGuardia, JFK, and Newark alone. The FAA ground stops created a ripple effect of delays at airports from Boston to Washington, D.C. Travelers were urged to check with their airlines before heading to airports, as additional thunderstorms threatened further disruptions into the evening.

Tornadoes confirmed in New Jersey, flooding spreads

The National Weather Service confirmed tornadoes touched down in Morris County, New Jersey, and near Stanhope on July 21, causing trees and debris to block roadways. A waterspout was captured on video crossing the Delaware Bay near Cape May Point before becoming a tornado. The NWS plans to survey damage from two suspected tornadoes in northern New Jersey on July 22, with a full assessment expected by Wednesday evening. No injuries were reported from the Cape May Point tornado, though damage was described as sporadic.

Flash flooding threatens homes and businesses

Torrential rain fell at rates of one to three inches per hour across the region, overwhelming drainage systems and causing rapid street and highway flooding. A Flood Watch remained active for New York City, Long Island, northern New Jersey, and Philadelphia through late Tuesday night. In northern New Jersey, flooding submerged cars and closed major intersections. Emergency officials warned residents to move to higher ground and avoid traveling through water-covered roads, especially in low-lying areas and basement apartments. Local businesses braced for additional damage after recovering from flooding earlier in the week.

Power outages and widespread disruptions

More than 6,200 customers lost power in New Jersey by late afternoon on July 21. The tornado watch covered the five boroughs of New York City, most of New Jersey, and parts of Connecticut and Pennsylvania. Michael Hillock, owner of Maran’s Auto Body in Woodside, Queens, told WABC that his business was preparing sandbags at every entrance to protect against further flooding damage.

Final Thoughts

The tornado watch and severe weather disrupted millions of people across the Northeast on July 21, with confirmed tornadoes, over 2,500 canceled flights, and widespread flooding. Residents should monitor weather updates and avoid travel through flooded areas until conditions improve.

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