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Philadelphia Office of Emergency Management
Tuesday May 15th, 2018 :: 07:13 a.m. EDT


Flash Flood Watch

Flash Flood Watch in effect from 4PM until 2AM. Be prepared to take action in the event that flooding develops.

... Flash Flood Watch in effect from this afternoon through late

The National Weather Service in Mount Holly has issued a

* Flash Flood Watch for portions of Delaware, northeast
Maryland, New Jersey, and Pennsylvania, including the
following areas, in Delaware, Kent and New Castle. In
northeast Maryland, Cecil, Kent MD, and Queen Annes. In New
Jersey, Atlantic, Atlantic coastal Cape May, Camden, Cape May,
coastal Atlantic, coastal ocean, Cumberland, eastern Monmouth,
Gloucester, Hunterdon, Mercer, Middlesex, northwestern
Burlington, ocean, Salem, Somerset, southeastern Burlington,
and western Monmouth. In Pennsylvania, Berks, Delaware,
eastern Chester, eastern Montgomery, Lehigh, lower Bucks,
Philadelphia, upper Bucks, western Chester, and western

* From 4 PM EDT today to 2 am EDT Wednesday.

* A line of intense thunderstorms is expected to move into the
region from the northwest late this afternoon and this evening.
There are indications that storms may repeatedly move over the
same areas, especially during the evening hours. Localized
rainfall of one to three inches is likely where this occurs.
Combined with the rainfall received this past weekend, this may
lead to a few instances of flash flooding.

* The areas of greatest risk are poor-drainage and urban
locations, where rapid runoff may cause localized flash
flooding. Quickly responding creeks and streams may also
experience flooding in areas receiving the heaviest rainfall.
The storms are expected to move through the area during or just
after the evening commute. Motorists should be prepared for
torrential downpours and potential flooding as the storms move

Precautionary/preparedness actions...

A Flash Flood Watch means that there is the potential for flash
flooding which can be life-threatening. Heavy rain is expected to
occur over a short period of time. Rapidly rising flood waters
may quickly inundate roadways and areas of poor drainage. Streams
and creeks could leave their banks, flooding nearby properties.

Please monitor the forecast, especially if you live in a location
that is prone to flooding. Be prepared to take action if a Flash
Flood Warning is issued for your area.

For additional updates and weather information, visit
For all current NWS Watches, Warnings, or Advisories, visit  
For further information on emergency preparedness, visit

Philadelphia Office of Emergency Management
240 Spring Garden St
Philadelphia, PA 19123

Emergency: 9-1-1

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