Federal forecasters have issued flood alerts affecting 39 million people along the East Coast from Washington D.C. to New Haven, Connecticut, due to developing thunderstorms. New York City Emergency Management warned of potential flash flooding and opened 51 shelters for vulnerable residents, anticipating up to 7 inches of rain in certain areas. The National Weather Service issued flood watches for several states including Maryland, Pennsylvania, Delaware, New Jersey, and parts of Connecticut, with warnings extending into Sunday morning.
Written by the local model on 2026-09-13,
using this article's own text rather than the other coverage of the
same event (that is the story summary below).
Story summary
Federal forecasters issued flood alerts for 39 million people late on Saturday extending into Sunday, as thunderstorms developed from Washington, D.C., to New Haven, Connecticut. In response, New York City Emergency Management warned residents of heavy rain and possible flash flooding through Sunday morning, opening 51 weather shelters for vulnerable populations, including those in basement apartments. The National Weather Service issued a series of flood alerts, including watches, late Saturday into early Sunday for parts of Maryland, Pennsylvania, Delaware, and New Jersey. A flood watch for Philadelphia and neighboring counties was set to last through morning, while one for New York City began at 4 a.m. Sunday and ended at noon. The agency stated that 5 to 7 inches of rain could fall in Nassau and Suffolk counties as well as southern Connecticut, significantly increasing the flash flooding risk in eastern Brooklyn.
Written for “Flash Flood Warnings East Coast” on 2026-09-14,
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No political leaning scored for article 8608 · logged 2026-09-13
Federal forecasters issued flood alerts for 39 million people late Saturday into Sunday as a line of thunderstorms developed from Washington, D.C., to New Haven, Connecticut.
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line → issue → Haven
New York City Emergency Management warned residents of heavy rain and possible flash flooding into Sunday morning as the city opened 51 weather shelters for those vulnerable to floodwaters, including people in basement apartments.
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city → warn → apartments
The National Weather Service issued a slew of flood alerts, including flood watches, late Saturday through early Sunday for parts of Maryland, Pennsylvania, Delaware and New Jersey.
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Service → issue → Maryland
A flood watch for Washington, D.C., expired at 1 a.m. Sunday.
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watch → expire → a.m.
A flood watch for New York City was scheduled to start at 4 a.m. Sunday and extend through noon.
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watch → schedule → noon
New York City Emergency Management said in a statement that 5 to 7 inches of rain could fall in Nassau and Suffolk counties, as well as in southern Connecticut, and warned that the city’s eastern boroughs could also be hit with heavy rain.
“A small shift in where the rain sets up would bring 5 to 7 inch totals and a much higher flash flooding risk into eastern Brooklyn and Queens,” it said.
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it → say → Brooklyn
New Yorkers in those neighborhoods living in basements and below grade are urged to move to higher ground tonight.”
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Yorkers → live → ground
A flood watch for parts of southern Connecticut, including northern New Haven, was in effect through Sunday afternoon, according to the weather service.
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watch → include → service
The thunderstorms are emerging as a trough of cold air high in the atmosphere moves east and clashes with warmer air, federal forecasters said.
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forecasters → emerge → air
“The combination of instability, deep moisture, and forcing, may lead to an elevated threat for excessive rainfall and severe thunderstorms,” the weather service said in a forecast discussion late Saturday.
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service → lead → discussion
