***Flash Flood Watch and rainfall maps***
***Rainfall maps! Flash Flood Watch for Long Island and the entire tri-state area from 2 PM Wednesday to 2 PM Thursday for 3 to 5 inches of rain! Also, wind gusts up to 35 mph are possible.***
Flood Watch National Weather Service New York NY 306 PM EDT Mon Aug 30 2021
The remnants of Ida will pass near the region Wednesday night through Thursday. Deep tropical moisture will interact with a nearly stationary frontal boundary across the Middle Atlantic and Northeast to produce heavy rainfall late Wednesday through Thursday morning. The rainfall should begin to taper off Thursday afternoon. A widespread 3 to 5 inches of rain is forecast with locally higher amounts possible. This rainfall combined with wet antecedent conditions may lead to flash flooding. Flooding of fast responding rivers and streams is possible, and flooding of main stem rivers cannot be ruled out.
Here are the rainfall maps from the WPC, Euro, and GFS, respectively.