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Early spring and winter flooding in New Jersey tends to occur as a result of widespread, steady rain of moderate intensity that falls on frozen ground. Snow and ice melt may increase the chance of winter flooding. Summer flooding resulting from thunderstorms typically occurs in small streams and is of local extent. Late summer and fall flooding associated with frontal storms, tropical storms and hurricanes can be widespread, resulting from heavy intense rains across the entire state. New Jersey's major floods are those that are the most severe in terms of magnitude, areal extent, loss of life, and property damage.
Flood Watch in effect today, Saturday, March 13th 2010 -
National Weather Service Advanced Hydrologic Prediction Service
Historical Crests
(1) 24.47 ft on 04/06/1984
(2) 22.18 ft on 05/30/1968
(3) 21.72 ft on 04/16/2007
(4) 21.00 ft on 09/17/1999
(5) 20.42 ft on 04/03/2005
(6) 20.37 ft on 02/03/1973
(7) 19.56 ft on 04/10/1980
(8) 18.65 ft on 11/09/1977
(9) 17.86 ft on 10/09/2005
(10) 17.56 ft on 10/13/2005
Statement as of 3:43 AM EST on March 13, 2010
... Flood Watch remains in effect through Sunday morning...
The Flood Watch continues for
* portions of Delaware... northeast Maryland... New Jersey and
Pennsylvania... including the following areas... in Delaware...
Delaware beaches... inland Sussex... Kent and New Castle. In
northeast Maryland... Caroline... Cecil... Kent MD... Queen Annes
and Talbot. In New Jersey... Atlantic... Atlantic coastal Cape
May... Camden... Cape May... coastal Atlantic... coastal ocean...
Cumberland... eastern Monmouth... Gloucester... Hunterdon...
Mercer... Middlesex... Morris... northwestern Burlington...
ocean... Salem... Somerset... southeastern Burlington... Sussex...
Warren and western Monmouth. In Pennsylvania... Berks... Bucks...
Carbon... Chester... Delaware... Lehigh... Monroe... Montgomery...
Northampton and Philadelphia.
* Through Sunday morning
* periods of rain will occur across the area into Sunday
morning. The heaviest rain is anticipated to occur starting
late tonight and especially during Saturday.
* Widespread total rainfall amounts of 2 to 4 inches are
anticipated with this storm... with locally around 5 inches
possible. Highest storm total amounts are expected in New
Jersey.
Bands of heavy rain will affect the Flood Watch area today. This
bands will lift slowly from south to north and exit northern New
Jersey and Pennsylvania last tonight. There is a slight chance of
thunderstorms in the southern part of the region that would also
produce localized higher amounts of rain.
Given this amount of rain... the potential exists for areas of
dangerous flooding to develop over the next couple of days. Small
streams and possibly main Stem rivers will reach flood stage.
Smaller streams will respond first to the rainfall followed by
the larger rivers. Flooding could begin toward daybreak Saturday
along fast responding creeks... while the larger... slower
responding rivers could see flooding persist into early next
week. In addition... these rainfall amounts will cause areas of
flooding on roadways and poor drainage.
Precautionary/preparedness actions...
A Flood Watch means there is a potential for flooding based on
current forecasts.
You should monitor later forecasts and be alert for possible
flood warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.
