Scattered thunderstorms may produce flash floods in the New York region late Wednesday and early Thursday, even as many communities are still reeling from the damage caused by the remnants of Hurricane Ida, which killed at least 46 people across four states one week ago, the National Weather Service said.
The scattered storms may produce heavy downpours, with a “marginal to slight risk” of flash flooding in northeast New Jersey, New York City, the Lower Hudson Valley and southwest Connecticut, the Weather Service said.
The storms were expected to bring 0.5 to 1.5 inches of ra in, although 2 to 2.25 inches were possible in a worst-case scenario, the Weather Service said. It noted that flooding was possible in urban areas and in communities where small rivers, streams and creeks were already swollen.
Severe thunderstorms with damaging wind gusts were also possible and an isolated tornado “cannot be ruled out” north and west of New York City.
The possibility of additional rain came as states were still tallying the damage from Ida’s floodwaters, which killed at least 25 people in New Jersey, 16 in New York, four in Pennsylvania and one in Connecticut.
On Wednesday, Gov. Philip D. Murphy of New Jersey warned residents to be careful with more rain possibly heading to the region.
“Please take every precaution given that the ground in many places remains saturated,” Mr. Murphy said on Twitter. “The potential for flash flooding always exists with a quick-moving thunderstorm. Do not attempt to drive into standing water.”