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Flood Watch Issued for 18 N.J. Counties as Up to 5 Inches of Rain Expected

A flood watch has been issued for 18 counties in New Jersey as a storm system threatens to bring up to 5 inches of rain, which could cause flash flooding. The watch comes less than a week after tornadoes touched down in Morris County.

Flood Watch Issued for 18 N.J. Counties as Up to 5 Inches of Rain Expected

Flood Watch Issued for 18 N.J. Counties as Up to 5 Inches of Rain Expected

The short answer

A flood watch is an alert issued by the National Weather Service when conditions are favorable for flooding. It does not mean flooding will occur, but that it is possible. The NWS advises residents to be prepared to take action, such as moving to higher ground or avoiding driving through floodwaters. In this case, a low-pressure system is expected to bring heavy, sustained rain across northern and central New Jersey, with rainfall totals of 2 to 4 inches and locally up to 5 inches. The flood watch covers 18 counties and is in effect from Monday evening through Tuesday night. Saturated ground from previous storms increases the risk.

Why it's trending

The flood watch is trending due to the imminent threat of heavy rain — up to 5 inches in some areas — which could lead to flash flooding. The warning comes after multiple tornadoes struck Morris County last week, heightening public concern about severe weather.

The National Weather Service has issued a flood watch for 18 counties in New Jersey, effective from Monday evening through Tuesday night, as a storm system is expected to deliver 2 to 4 inches of rain with isolated amounts up to 5 inches, according to NJ.com.

The watch area includes Bergen, Essex, Hudson, Middlesex, Morris, Passaic, Union, and other counties. The NWS warns that excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

This flood watch follows a severe weather outbreak on Tuesday, July 21, when three EF-1 tornadoes touched down in Morris County. The Parsippany tornado, one of the three, had peak winds of 80-90 mph and lasted about a minute, uprooting trees and snapping power poles, the Parsippany Focus reported. No injuries were reported.

Residents are urged to monitor forecasts and be prepared to move to higher ground if flash flooding occurs. The NWS advises avoiding driving through flooded roads, as most flood deaths occur in vehicles.

Timeline

  1. Three EF-1 tornadoes hit Morris County

    The National Weather Service confirmed three tornadoes in Morris County, with winds up to 110 mph. No injuries were reported (Parsippany Focus).

  2. Flood watch issued for 18 counties

    NWS issues flood watch ahead of storm expected to bring up to 5 inches of rain from Monday evening to Tuesday night (NJ.com).

Questions people ask

What is a flood watch?

A flood watch means conditions are favorable for flooding. It does not guarantee flooding will occur but advises preparedness.

Which counties are under the flood watch?

According to NJ.com, 18 counties are under the watch, including Bergen, Essex, Hudson, Middlesex, Morris, Passaic, and Union.

How much rain is expected?

The NWS forecasts 2 to 4 inches of rain, with locally up to 5 inches possible (NJ.com).

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Flood watch issued for 18 NJ counties; up to 5 inches rain | TakeTack