Heavy downpours for the evening rush and then for the overnight is likely. Since the rain during the day has been particularly heavy over parts of Long Island and there has already been some flooding look for additional flooding possibilities overnight. 1 to 3 inches of rain could accumulate in spots on top of what has already fallen through this afternoon. There have been flood warnings already issued for Eastern Suffolk County.
This is the radar shot from 4:15pm this afternoon so you have a point of reference. Current radar loops are below and you can click on them to open them up to a bigger image. You can see there is heavy rain back through much of Eastern Pennsylvania that has to work its way through tonight assuming it all holds together. The wave just off Delaware is holding together pretty well and will continue to edge toward the northeast tonight. Gradually the rain will shift offshore and weather conditions will begin to improve late tonight in Western New Jersey and the rains should exit the coast early Friday morning. During the day Friday weather conditions should improve with decreasing clouds and increasing amounts of sunshine.
Should any Flash Flood Warnings be issued check the scrolling warning feeds below for New York and you can click on them to read the specific National Weather Service watch, warning , or advisory, that is issued. Also this may be a good time to download and subscribe to my weather app for all platforms so you can take my forecast with you wherever you go.
Latest National Weather Service rainfall forecast maps are located on the severe weather page. Amounts have been increased for Eastern Long Island due to the rains of this afternoon. Longer term check my European post from earlier today. More rain is coming later Saturday and then it looks to get warm with no rain for at least a week.