Alert archive / Delaware / Coastal Flood Statements in 2021
Coastal Flood Statement 11, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this coastal flood statement at Oct 31, 2021, 1:16 AM EDT for Sussex County, Delaware. It was in force for 20 hr.
The area
The counties it named.
The facts
- Issued
- Oct 31, 2021, 1:16 AM EDT (05:16 UTC)
- Expired
- Oct 31, 2021, 9:00 PM EDT
- In force
- 20 hr
- Issued by
- NWS Philadelphia/Mount Holly
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 18 km from the middle of the area, began a volume at 05:19 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 5.3 hours before the alert went out and 84 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 16 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 1106 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
856
WHUS41 KPHI 310516
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
116 AM EDT Sun Oct 31 2021
MDZ012-015-019-020-311900-
/O.CAN.KPHI.CF.W.0005.000000T0000Z-211031T1100Z/
/O.EXB.KPHI.CF.Y.0018.000000T0000Z-211031T2300Z/
Kent MD-Queen Annes-Talbot-Caroline-
116 AM EDT Sun Oct 31 2021
...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...
...COASTAL FLOOD WARNING IS CANCELLED...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...Tidal areas in the Maryland counties of Kent, Queen
Anne's, Talbot and Caroline.
* WHEN...Until 7:00 PM this evening.
* IMPACTS...At this level, flooding occurs on the most vulnerable
roads along tidal waterways. Some partial or full road closures
are possible.
* ADDITIONAL DETAILS...Water levels will be on the decrease
tonight and Monday, with no additional flooding anticipated.
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 Advanced Hydrologic Prediction Service at
water.weather.gov/ahps for additional water level and flood impact
information for your local tide gauge.
&&
Time of high total tides are approximate to the nearest hour.
Chesapeake Bay at Tolchester Beach
MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
MHHW Categories - Minor 1.8 ft, Moderate 2.8 ft, Major 3.8 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
31/04 AM 3.9 2.2 2.2 Minor
31/04 PM 3.8 2.1 2.3 Minor
01/04 AM 3.1 1.4 1.4 None
01/05 PM 2.5 0.8 0.9 None
02/05 AM 2.6 0.9 1.0 None
02/07 PM 2.8 1.1 1.1 None
Eastern Bay at Claiborne
MLLW Categories - Minor 3.4 ft, Moderate 4.4 ft, Major 5.4 ft
MHHW Categories - Minor 1.7 ft, Moderate 2.7 ft, Major 3.7 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
31/01 AM 3.6 1.9 2.1 Minor
31/01 PM 3.7 2.0 2.5 Minor
01/01 AM 3.3 1.6 1.9 None
01/02 PM 2.7 1.0 1.4 None
02/03 AM 2.9 1.2 1.5 None
02/03 PM 3.1 1.4 1.6 None
&&
$$
NJZ015-017>019-PAZ070-071-106-311900-
/O.EXP.KPHI.CF.W.0005.000000T0000Z-211031T0500Z/
/O.CON.KPHI.CF.Y.0018.000000T0000Z-211101T0500Z/
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Lower Bucks-
116 AM EDT Sun Oct 31 2021
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 AM EDT
MONDAY...
...COASTAL FLOOD WARNING HAS EXPIRED...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...The tidal Delaware River and its tidal tributaries down
to the Commodore Barry Bridge area.
* WHEN...Until 1:00 AM Monday.
* IMPACTS...At this level, flooding occurs on the most vulnerable
roads along tidal waterways. Some partial or full road closures
are possible.
* ADDITIONAL DETAILS...Water levels will be on the decrease on
Monday, with no additional flooding anticipated.
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 Advanced Hydrologic Prediction Service at
water.weather.gov/ahps 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 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
-------- --------- --------- --------- --------
31/11 AM 9.6 1.9 2.4 Minor
31/11 PM 9.5 1.8 1.9 Minor
01/12 PM 9.1 1.4 1.5 None
02/01 AM 9.0 1.3 1.2 None
02/01 PM 9.1 1.4 1.0 None
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
-------- --------- --------- --------- --------
31/11 AM 8.5 1.8 2.5 Minor
31/11 PM 8.5 1.8 1.8 Minor
01/11 AM 7.8 1.1 1.4 None
02/12 AM 8.0 1.3 1.2 None
02/12 PM 7.9 1.2 1.2 None
&&
$$
NJZ027-310630-
/O.CAN.KPHI.CF.Y.0017.000000T0000Z-211101T0100Z/
Southeastern Burlington-
116 AM EDT Sun Oct 31 2021
...COASTAL FLOOD ADVISORY IS CANCELLED...
Tidal flooding is no longer anticipated in southeastern
Burlington County.
$$
NJZ020-026-311900-
/O.CON.KPHI.CF.Y.0017.000000T0000Z-211101T0100Z/
Ocean-Coastal Ocean-
116 AM EDT Sun Oct 31 2021
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
* WHAT...Up to one half foot of inundation above ground level
expected in low-lying areas near shorelines and tidal waterways.
* WHERE...Ocean County, along Barnegat Bay.
* WHEN...Until 9:00 PM this evening.
* IMPACTS...At this level, flooding occurs on the most vulnerable
roads in coastal and bayside communities, and along inland
tidal waterways. Some partial or full road closures are
possible.
* ADDITIONAL DETAILS...Water levels will be on the decrease
tonight and Monday, with no additional flooding anticipated.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Coastal Flood Advisory means that minor tidal flooding is
expected. Minor tidal flooding often results in some road
closures. Usually, the most vulnerable roadways will flood.
Do not leave your vehicle at a location that is prone to tidal
flooding. Do not drive your vehicle through flood waters. The
water may be deeper than you think it is. You will be putting
yourself in danger and your vehicle may be damaged, leading to
costly repairs.
Visit the Advanced Hydrologic Prediction Service at
water.weather.gov/ahps for additional water level and flood impact
information for your local tide gauge.
&&
Time of high total tides are approximate to the nearest hour.
Barnegat Bay at Barnegat Light
MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
MHHW Categories - Minor 1.0 ft, Moderate 2.0 ft, Major 3.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
31/04 AM 3.7 1.2 1.5 Minor
31/05 PM 3.3 0.8 0.9 None
01/05 AM 3.0 0.5 0.6 None
01/06 PM 3.0 0.5 0.5 None
02/07 AM 3.1 0.6 0.6 None
02/06 PM 3.0 0.5 0.4 None
&&
$$
DEZ003-004-311900-
/O.NEW.KPHI.CF.S.0011.211031T0516Z-211101T0100Z/
Inland Sussex-Delaware Beaches-
116 AM EDT Sun Oct 31 2021
...MINOR FLOODING ALONG LITTLE ASSAWOMAN BAY...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...Little Assawoman Bay and the tidal waterways that flow
into it.
* WHEN...Through this evening.
* IMPACTS...Minor roadway flooding is possible.
* ADDITIONAL DETAILS...Water levels will be on the decrease
tonight and Monday, with no additional flooding anticipated.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive on flooded roadways.
$$
Iovino3 follow-up statements
789
WHUS41 KPHI 311841
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
241 PM EDT Sun Oct 31 2021
NJZ015-017>019-PAZ070-071-106-010500-
/O.CON.KPHI.CF.Y.0018.000000T0000Z-211101T0500Z/
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Lower Bucks-
241 PM EDT Sun Oct 31 2021
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 AM EDT
MONDAY...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...The tidal Delaware River and its tidal tributaries
down to the Commodore Barry Bridge area.
* WHEN...Until 1:00 AM Monday.
* IMPACTS...At this level, flooding occurs on the most
vulnerable roads along tidal waterways. Some partial or full
road closures are possible.
* ADDITIONAL DETAILS...Water levels will be on the decrease on
Monday, with no additional flooding anticipated.
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 Advanced Hydrologic Prediction Service at
water.weather.gov/ahps 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 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
-------- --------- --------- --------- --------
31/11 PM 9.3 1.6 1.7 Minor
01/12 PM 8.8 1.1 1.2 None
02/12 AM 8.9 1.2 1.0 None
02/01 PM 9.1 1.4 1.0 None
03/01 AM 9.1 1.4 1.0 None
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
-------- --------- --------- --------- --------
31/11 PM 8.2 1.5 1.5 Minor
01/11 AM 7.5 0.8 1.1 None
02/12 AM 7.8 1.1 1.0 None
02/12 PM 7.7 1.0 1.0 None
03/01 AM 7.8 1.1 1.0 None
&&
$$
NJZ020-026-010100-
/O.CON.KPHI.CF.Y.0017.000000T0000Z-211101T0100Z/
Ocean-Coastal Ocean-
241 PM EDT Sun Oct 31 2021
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
* WHAT...Up to one half foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
* WHERE...Ocean County, along Barnegat Bay.
* WHEN...Until 9:00 PM this evening.
* IMPACTS...At this level, flooding occurs on the most
vulnerable roads in coastal and bayside communities, and along
inland tidal waterways. Some partial or full road closures are
possible.
* ADDITIONAL DETAILS...Additional flooding this afternoon will be
confined mainly to the back bays where water has been slower to
drain out. Water levels will be on the decrease tonight and
Monday, with no additional flooding anticipated.
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 Advanced Hydrologic Prediction Service at
water.weather.gov/ahps for additional water level and flood
impact information for your local tide gauge.
&&
Time of high total tides are approximate to the nearest hour.
Barnegat Bay at Barnegat Light
MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
MHHW Categories - Minor 1.0 ft, Moderate 2.0 ft, Major 3.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
31/04 PM 3.4 0.9 1.0 None
01/05 AM 3.1 0.6 0.7 None
01/05 PM 3.0 0.5 0.5 None
02/06 AM 3.1 0.6 0.5 None
02/06 PM 3.0 0.5 0.4 None
03/07 AM 3.4 0.9 0.5 None
&&
$$
MDZ012-015-019-020-312300-
/O.CON.KPHI.CF.Y.0018.000000T0000Z-211031T2300Z/
Kent MD-Queen Annes-Talbot-Caroline-
241 PM EDT Sun Oct 31 2021
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS
EVENING...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...Tidal areas in the Maryland counties of Kent, Queen
Anne's, Talbot and Caroline.
* WHEN...Until 7:00 PM this evening.
* IMPACTS...At this level, flooding occurs on the most
vulnerable roads along tidal waterways. Some partial or full
road closures are possible.
* ADDITIONAL DETAILS...Water levels will be on the decrease
tonight and Monday, with no additional flooding anticipated.
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 Advanced Hydrologic Prediction Service at
water.weather.gov/ahps for additional water level and flood
impact information for your local tide gauge.
&&
Time of high total tides are approximate to the nearest hour.
Chesapeake Bay at Tolchester Beach
MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
MHHW Categories - Minor 1.8 ft, Moderate 2.8 ft, Major 3.8 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
31/04 PM 3.5 1.8 2.0 Minor
01/05 AM 3.0 1.3 1.3 None
01/05 PM 2.3 0.6 0.7 None
02/05 AM 2.3 0.6 0.7 None
02/06 PM 2.5 0.8 0.7 None
03/06 AM 2.2 0.5 0.6 None
Eastern Bay at Claiborne
MLLW Categories - Minor 3.4 ft, Moderate 4.4 ft, Major 5.4 ft
MHHW Categories - Minor 1.7 ft, Moderate 2.7 ft, Major 3.7 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
31/01 PM 3.1 1.4 1.9 None
01/12 AM 3.0 1.3 1.7 None
01/01 PM 2.3 0.6 1.1 None
02/01 AM 2.3 0.6 1.0 None
02/02 PM 2.3 0.6 0.9 None
03/02 AM 2.2 0.5 0.9 None
&&
$$
DEZ003-004-010100-
/O.CON.KPHI.CF.S.0011.000000T0000Z-211101T0100Z/
Inland Sussex-Delaware Beaches-
241 PM EDT Sun Oct 31 2021
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...Little Assawoman Bay and the tidal waterways that flow
into it.
* WHEN...Through this evening.
* IMPACTS...Minor roadway flooding is possible.
* ADDITIONAL DETAILS...Water levels will be on the decrease
tonight and Monday, with no additional flooding anticipated.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive on flooded roadways.
&&
Time of high total tides are approximate to the nearest hour.
Delaware Bay at Lewes
MLLW Categories - Minor 6.0 ft, Moderate 7.0 ft, Major 8.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 3.3 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
31/05 PM 5.3 0.7 1.0 None
01/06 AM 4.7 0.0 0.5 None
01/06 PM 5.1 0.5 0.6 None
02/07 AM 5.2 0.5 0.6 None
02/07 PM 5.3 0.7 0.7 None
03/08 AM 5.6 1.0 0.6 None
&&
$$
Fitzsimmons544
WHUS41 KPHI 312332
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
732 PM EDT Sun Oct 31 2021
NJZ015-017>019-PAZ070-071-106-010500-
/O.CON.KPHI.CF.Y.0018.000000T0000Z-211101T0500Z/
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Lower Bucks-
732 PM EDT Sun Oct 31 2021
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 AM EDT
MONDAY...
* 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, Mercer, Camden and
Northwestern Burlington. In Pennsylvania, Delaware, Lower
Bucks and Philadelphia.
* WHEN...Until 1 AM EDT Monday.
* IMPACTS...At this level, flooding begins on the most
vulnerable roads along tidal waterways. Some partial or full
road closures are possible.
* ADDITIONAL DETAILS...Water levels will be on the decrease on
Monday, with no additional flooding anticipated.
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 Advanced Hydrologic Prediction Service at
water.weather.gov/ahps 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 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
-------- --------- --------- --------- --------
31/11 PM 9.3 1.6 1.7 Minor
01/12 PM 8.8 1.1 1.2 None
02/12 AM 8.9 1.2 1.0 None
02/01 PM 9.1 1.4 1.0 None
03/01 AM 9.1 1.4 1.0 None
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
-------- --------- --------- --------- --------
31/11 PM 8.2 1.5 1.5 Minor
01/11 AM 7.5 0.8 1.1 None
02/12 AM 7.8 1.1 1.0 None
02/12 PM 7.7 1.0 1.0 None
03/01 AM 7.8 1.1 1.0 None
&&
$$
NJZ020-026-010100-
/O.CON.KPHI.CF.Y.0017.000000T0000Z-211101T0100Z/
Ocean-Coastal Ocean-
732 PM EDT Sun Oct 31 2021
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 9 PM EDT THIS
EVENING...
* WHAT...Up to one half foot of inundation above ground level
expected in low-lying areas near shorelines and tidal waterways.
* WHERE...Coastal Ocean and Ocean.
* WHEN...Until 9 PM EDT this evening.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected.
* ADDITIONAL DETAILS...Additional flooding this afternoon will
be confined mainly to the back bays where water has been
slower to drain out. Water levels will be on the decrease
tonight and Monday, with no additional flooding anticipated.
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 Advanced Hydrologic Prediction Service at
water.weather.gov/ahps for additional water level and flood
impact information for your local tide gauge.
&&
Time of high total tides are approximate to the nearest hour.
Barnegat Bay at Barnegat Light
MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
MHHW Categories - Minor 1.0 ft, Moderate 2.0 ft, Major 3.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
31/04 PM 3.4 0.9 1.0 None
01/05 AM 3.1 0.6 0.7 None
01/05 PM 3.0 0.5 0.5 None
02/06 AM 3.1 0.6 0.5 None
02/06 PM 3.0 0.5 0.4 None
03/07 AM 3.4 0.9 0.5 None
&&
$$
DEZ003-004-010100-
/O.CON.KPHI.CF.S.0011.000000T0000Z-211101T0100Z/
Inland Sussex-Delaware Beaches-
732 PM EDT Sun Oct 31 2021
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...Little Assawoman Bay and the tidal waterways that flow
into it.
* WHEN...Until 9 PM EDT this evening.
* IMPACTS...Minor roadway flooding is possible.
* ADDITIONAL DETAILS...Water levels will be on the decrease
tonight and Monday, with no additional flooding anticipated.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
&&
Time of high total tides are approximate to the nearest hour.
Delaware Bay at Lewes
MLLW Categories - Minor 6.0 ft, Moderate 7.0 ft, Major 8.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 3.3 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
31/05 PM 5.3 0.7 1.0 None
01/06 AM 4.7 0.0 0.5 None
01/06 PM 5.1 0.5 0.6 None
02/07 AM 5.2 0.5 0.6 None
02/07 PM 5.3 0.7 0.7 None
03/08 AM 5.6 1.0 0.6 None
&&
$$
MPS436
WHUS41 KPHI 010106
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
906 PM EDT Sun Oct 31 2021
NJZ020-026-011300-
/O.EXP.KPHI.CF.Y.0017.000000T0000Z-211101T0100Z/
/O.NEW.KPHI.CF.S.0012.211101T0106Z-211101T1300Z/
Ocean-Coastal Ocean-
906 PM EDT Sun Oct 31 2021
...COASTAL FLOOD ADVISORY HAS EXPIRED...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...Barnegat Bay and the tidal waterways that flow into it.
* WHEN...Until 9 AM EDT Monday.
* IMPACTS...Minor roadway flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
&&
Time of high total tides are approximate to the nearest hour.
Barnegat Bay at Barnegat Light
MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
MHHW Categories - Minor 1.0 ft, Moderate 2.0 ft, Major 3.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
01/05 AM 3.1 0.6 0.7 None
01/05 PM 3.0 0.5 0.5 None
02/06 AM 3.1 0.6 0.5 None
02/06 PM 3.0 0.5 0.4 None
03/07 AM 3.4 0.9 0.5 None
&&
$$
DEZ003-004-010215-
/O.EXP.KPHI.CF.S.0011.000000T0000Z-211101T0100Z/
Inland Sussex-Delaware Beaches-
906 PM EDT Sun Oct 31 2021
Water levels are dropping and tidal flooding is no longer
expected.
$$
NJZ015-017>019-PAZ070-071-106-010500-
/O.CON.KPHI.CF.Y.0018.000000T0000Z-211101T0500Z/
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Lower Bucks-
906 PM EDT Sun Oct 31 2021
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 AM EDT
MONDAY...
* 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, Mercer, Camden and
Northwestern Burlington. In Pennsylvania, Delaware, Lower
Bucks and Philadelphia.
* WHEN...Until 1 AM EDT Monday.
* IMPACTS...At this level, flooding begins on the most
vulnerable roads along tidal waterways. Some partial or full
road closures are possible.
* ADDITIONAL DETAILS...Water levels will be on the decrease on
Monday, with no additional flooding anticipated.
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 Advanced Hydrologic Prediction Service at
water.weather.gov/ahps 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 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
-------- --------- --------- --------- --------
31/11 PM 9.3 1.6 1.7 Minor
01/12 PM 8.8 1.1 1.2 None
02/12 AM 8.9 1.2 1.0 None
02/01 PM 9.1 1.4 1.0 None
03/01 AM 9.1 1.4 1.0 None
03/02 PM 9.4 1.7 0.9 Minor
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
-------- --------- --------- --------- --------
31/11 PM 8.2 1.5 1.5 Minor
01/11 AM 7.5 0.8 1.1 None
02/12 AM 7.8 1.1 1.0 None
02/12 PM 7.7 1.0 1.0 None
03/01 AM 7.8 1.1 1.0 None
03/01 PM 8.1 1.4 1.1 None
&&
$$Nearby
Coastal Flood Statements in Delaware, 2021Every coastal flood statement in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.