The National Weather Service has issued a flash flood watch for Nassau County. It will be in effect from 4 a.m. to noon Friday.
- As low pressure approaches from the Mid-Atlantic region late tonight and passes over or just south of New York City and Long Island on Friday, rain could become heavy at times from late tonight into Friday morning. Rainfall of at least 3/4 to 1 inch is expected, with locally higher amounts up to 2 inches.
- There is still some uncertainty as to where the heaviest rainfall bands will set up, so not all places within the watch area may experience flooding. However, it will not take much additional rainfall to cause flooding in locations hard hit on Tuesday, and the heavier rainfall rates and total amounts could cause urban and highway flooding during the Friday morning rush.
Here is the latest thinking on how much rain is expected overnight and Friday. pic.twitter.com/O9IEFxkFHN
— NWS New York NY (@NWSNewYorkNY) September 27, 2018
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