Northeast flooding: Trapped drivers swam out of their cars. A woman died after being swept away by floodwaters. What to know about the heavy rainfall hitting the Northeast

That’s a 1-in-1000 year rainfall event for the area, according to a CNN analysis of NOAA’s historical rainfall frequency data. Reading, Pennsylvania, received 5.35 inches of rain Sunday, shattering its old daily rainfall record of 3.47 inches, set in 1952. “Significant to potentially catastrophic flash flooding is likely, especially in areas that have recently received heavy rainfall,” Vermont transportation officials tweeted. Currently state fire, Monroe county water rescue, Ontario county water rescue and several other agencies are assisting. Eastern Pennsylvania also saw “significant” flash flooding Sunday afternoon, according to the weather service.