Thunderstorms were said to bring as much as 1.5 inches of rain to the New York area on Thursday, a week after the region was ravaged by the remnants of Hurricane Ida.
There were no active flood warnings Thursday morning, said John Cristello, a meteorologist for the National Weather Service in New York, though he warned conditions could change if things turned out “the right way.”
It probably fell all morning and, in some areas, in the afternoon, he said.
Overall, the storms were expected to bring 0.5 to 1.5 inches of rain to the New York area, although 2 to 2.25 inches was possible in the 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 had already swollen.
New York City expected 0.75 inches to 1 inch of rain, with possibly 1.25 inches in some areas.
“These systems are not predicted to be severe at this time, but please be prepared if conditions may change,” the New York City Department of Emergency Management said.
The Weather Service office in Mount Holly, NJ, mentioned areas that have had heavy rain at night, particularly in Lehigh Valley, Warren County, and parts of northern Delmarva, some road flooding could occur.
High temperatures in New York City could spike into the mid-1970s on Thursday, Mr. cristello.
The storms come as many in the New York area are still recovering from the damage caused by Ida, which killed at least 46 people in four states.
Speaking at a news conference Wednesday morning, New York City Mayor Bill de Blasio said: “Clearly we are concerned about people affected that new water could be an issue. And we are also concerned that we might see more than is projected.”
Mr de Blasio urged residents and business owners to take precautionary measures, saying city workers would be “in force” to clean catch basins, especially in areas hard hit by Ida.
New Jersey Gov. Philip D. Murphy also asked residents to be aware of potential flooding.
“Please take all precautions, as the soil remains saturated in many places,” Mr. Murphy said on Twitter. “The potential for flash flooding is always there with a fast-moving thunderstorm. Try not to drive in standing water.”