Coastal Flood Advisory
Coastal Hazard Message
National Weather Service Mount Holly NJ
1247 AM EDT Thu Apr 30 2026
NJZ017>019-PAZ070-071-106-300900-
/O.CON.KPHI.CF.Y.0008.000000T0000Z-260430T0900Z/
Gloucester-Camden-Northwestern Burlington-Delaware-Philadelphia-
Lower Bucks-
1247 AM EDT Thu Apr 30 2026
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 5 AM EDT EARLY
THIS MORNING...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...In New Jersey, Gloucester, Camden and Northwestern
Burlington. In Pennsylvania, Delaware, Philadelphia and Lower
Bucks.
* WHEN...Until 5 AM EDT early this morning.
* IMPACTS...At this level, flooding begins on the most
vulnerable roads along tidal waterways. Some partial or full
road closures are possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 National Water Prediction Service at
https://water.noaa.gov/wfo/phi 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 Philadelphia
MLLW Categories - Minor 8.2 ft, Moderate 9.2 ft, Major 10.2 ft
MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 3.5 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
30/01 AM 8.3 1.6 1.3 Minor
30/02 PM 7.3 0.6 1.1 None
01/02 AM 8.0 1.3 0.9 None
01/02 PM 6.9 0.2 0.8 None
02/03 AM 7.9 1.2 0.9 None
02/03 PM 6.9 0.2 0.9 None
Delaware River at Burlington
MLLW Categories - Minor 9.3 ft, Moderate 10.3 ft, Major 11.3 ft
MHHW Categories - Minor 1.6 ft, Moderate 2.6 ft, Major 3.6 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
30/02 AM 9.6 1.9 1.4 Minor
30/03 PM 8.7 1.0 1.3 None
01/03 AM 9.5 1.8 1.2 Minor
01/03 PM 8.4 0.7 1.1 None
02/04 AM 9.3 1.6 1.1 Minor
&&
$$
MPS
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service New York NY
219 AM EDT Thu Apr 30 2026
ANZ350-353-302000-
/O.CON.KOKX.SC.Y.0050.000000T0000Z-260430T2200Z/
Moriches Inlet NY to Montauk Point NY out 20 NM-
Fire Island Inlet NY to Moriches Inlet NY out 20 NM-
219 AM EDT Thu Apr 30 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT THIS
EVENING...
* WHAT...Seas around 5 feet.
* WHERE...Fire Island Inlet NY to Montauk Point NY out 20 nm.
* WHEN...Until 6 PM EDT this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service New York NY
219 AM EDT Thu Apr 30 2026
ANZ355-302000-
/O.CON.KOKX.SC.Y.0050.000000T0000Z-260430T2200Z/
Sandy Hook NJ to Fire Island Inlet NY out 20 NM-
219 AM EDT Thu Apr 30 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT THIS
EVENING...
* WHAT...Seas around 5 feet.
* WHERE...Sandy Hook NJ to Fire Island Inlet NY out 20 NM.
* WHEN...Until 6 PM EDT this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
For more details, see the Coastal Waters Forecast from
National Weather Service New York NY, or visit
https://www.weather.gov/okx/marine
URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
110 AM EDT Thu Apr 30 2026
ANZ256-301900-
/O.EXT.KBOX.SC.Y.0050.000000T0000Z-260502T0000Z/
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 NM South of Block Island-
110 AM EDT Thu Apr 30 2026
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT FRIDAY...
* WHAT...West winds 5 to 15 kt and seas 4 to 6 feet.
* WHERE...Coastal Waters from Montauk NY to Marthas Vineyard
extending out to 20 NM South of Block Island.
* WHEN...Until 8 PM EDT Friday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
