Flood Watch

05/17/2018 3:30 AM through 05/17/2018 1:00 PM

Update to NWS-IDP-PROD-2834150-2616213

Flood Watch issued May 17 at 3:30AM EDT expiring May 19 at 6:00AM EDT by NWS Mount Holly NJ


The Flood Watch continues for

* Delaware, northeast Maryland, most of New Jersey, and portions
of southeast Pennsylvania.

* From tonight through late Friday night

* Periods of light to moderate rain will continue today, and then
heavier rainfall will move into the area later tonight. Periods
of moderate to heavy rain will persist through at least Friday
night, and possibly into the weekend. General rainfall amounts
of 2 to 4 inches are expected over the next 72 hours with the
highest totals occurring along and south of the Interstate 78
corridor. Locally higher amounts over 5 inches are possible in
slow-moving thunderstorms.

* A variety of flooding types are possible. Low-lying and poor
drainage flooding will be the most common type of flooding to
develop. Flash flooding will also be possible if thunderstorms
repeatedly move over the same locations, especially in urban
areas where rainfall runoff is maximized and where small
creeks and streams respond quickly. Flash flooding occurs
quicker than other types flooding due to the torrential rain
thunderstorms can produce in a short amount of time. Several
days of excessive runoff will eventually lead to a risk of
flooding in larger streams and rivers though the extent of the
flooding will depend on where the heaviest rain falls.


A Flood Watch means there is a potential for flooding based on
current forecasts.

If you live across the Passaic, Raritan, and Rancocas basins in
New Jersey or the Neshaminy, Schuylkill, and Brandywine basins
across Pennsylvania and Delaware, keep an eye on later river
forecasts. These forecasts, as well as all of our hydrologic
forecasts, can be accessed via our Advanced Hydrologic Prediction
Service website. Those living in areas prone to flooding should
be prepared to take action should flooding develop.

Target Area

Northwestern Burlington; Somerset; Upper Bucks; Coastal Ocean; Mercer; Lehigh; Inland Sussex; Cecil; Western Montgomery; Berks; Gloucester; Northampton; Hunterdon; Queen Anne's; Warren; Kent; Cumberland; Delaware; Middlesex; Cape May; Eastern Monmouth; Western Chester; New Castle; Atlantic; Southeastern Burlington; Lower Bucks; Eastern Montgomery; Delaware Beaches; Caroline; Camden; Coastal Atlantic; Philadelphia; Atlantic Coastal Cape May; Kent; Talbot; Salem; Eastern Chester; Ocean; Western Monmouth

Sender: NWS Mount Holly NJ
Sent: 3:30 AM on 05-17-2018
Sender Email: w-nws.webmaster@noaa.gov