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Coastal Flood Advisory

Coastal Hazard Message
National Weather Service Mount Holly NJ
508 PM EDT Wed Oct 27 2021

New Castle-Salem-
508 PM EDT Wed Oct 27 2021


* WHAT...Up to one foot of inundation above ground level
  expected in low-lying areas near shorelines and tidal

* WHERE...In New Jersey, Salem. In Delaware, New Castle.

* WHEN...From 4 PM to 10 PM EDT Thursday.

* IMPACTS...At this level, flooding begins on the most
  vulnerable roads along tidal waterways. Some partial or full
  road closures are possible.

* ADDITIONAL DETAILS...Additional rounds of tidal flooding are
  expected through Friday.


A Coastal Flood Advisory means that minor tidal flooding is
expected. Minor tidal flooding often results in some road
closures. Usually, the most vulnerable roadways will flood.

Do not leave your vehicle at a location that is prone to tidal
flooding. Do not drive your vehicle through flood waters. The
water may be deeper than you think it is. You will be putting
yourself in danger and your vehicle may be damaged, leading to
costly repairs.

Visit the Advanced Hydrologic Prediction Service at for additional water level and flood
impact information for your local tide gauge.


Time of high total tides are approximate to the nearest hour.

Delaware River at Reedy Point
MLLW Categories - Minor 7.2 ft, Moderate 8.2 ft, Major 9.2 ft
MHHW Categories - Minor 1.4 ft, Moderate 2.4 ft, Major 3.4 ft

             Total      Total    Departure
 Day/Time    Tide       Tide     from Norm   Flood
            ft MLLW    ft MHHW       ft      Impact
 --------  ---------  ---------  ---------  --------
 27/05 PM     7.0        1.2       1.5       None
 28/05 AM     7.2        1.4       2.4      Minor
 28/05 PM     7.8        2.0       2.2      Minor
 29/06 AM     7.2        1.4       2.4      Minor
 29/07 PM     8.9        3.1       3.4     Moderate
 30/07 AM     7.2        1.4       2.2      Minor



Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Mount Holly NJ
1108 PM EDT Wed Oct 27 2021

New Castle-
1108 PM EDT Wed Oct 27 2021

This Hazardous Weather Outlook is for New Castle County in Delaware.

.DAY ONE...Through tonight.

Minor coastal flooding is possible.

Please go to for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Please listen to NOAA Weather Radio or go to on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.


Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.


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Silver Spring, MD 20910
Page last modified: May 16, 2007
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