Alert archive / New Jersey / Coastal Flood Statements in 2020
Coastal Flood Statement 28, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this coastal flood statement at Dec 25, 2020, 12:03 AM EST for Ocean County, New Jersey; Sussex County, Delaware. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Dec 25, 2020, 12:03 AM EST (05:03 UTC)
- Expired
- Dec 25, 2020, 12:00 PM EST
- In force
- 12 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Sussex County, DE, Ocean County, NJ
The radar
The Dover AFB radar (KDOX), 75 km from the middle of the area, began a volume at 05:05 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, 5.1 hours before the alert went out and 158 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 837 m above ground
- 0-6 km bulk shear
- 219 kt
- 0-1 km storm-relative helicity
- 2568 m²/s²
- 0-3 km storm-relative helicity
- 2610 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
187
WHUS41 KPHI 250503
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
1203 AM EST Fri Dec 25 2020
MDZ012-251100-
/O.CON.KPHI.CF.Y.0038.201225T0700Z-201225T1100Z/
Kent MD-
1203 AM EST Fri Dec 25 2020
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST EARLY
THIS MORNING...
* WHAT...Up to one half foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
* WHERE...Kent MD.
* WHEN...Until 6 AM EST early this morning.
* IMPACTS...At this level, flooding begins on the most
vulnerable roads in bayside communities and 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 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
-------- --------- --------- --------- --------
25/03 AM 3.9 2.2 3.2 Minor
25/03 PM 2.1 0.4 1.1 None
26/05 PM 1.3 -0.4 0.1 None
27/05 AM 0.7 -1.0 0.1 None
27/06 PM 1.7 -0.0 0.5 None
&&
$$
DEZ003-004-251700-
/O.NEW.KPHI.CF.S.0028.201225T0503Z-201225T1700Z/
Inland Sussex-Delaware Beaches-
1203 AM EST Fri Dec 25 2020
* WHAT...Up to one foot of inundation above ground level in low-
lying areas near shorelines and tidal waterways.
* WHERE...Little Assawoman Bay and the tidal waterways that flow
into it.
* WHEN...Through this morning.
* IMPACTS...Minor roadway flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
&&
$$
NJZ020-026-251700-
/O.NEW.KPHI.CF.S.0028.201225T0503Z-201225T1700Z/
Ocean-Coastal Ocean-
1203 AM EST Fri Dec 25 2020
* WHAT...Up to one 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...Through this morning.
* IMPACTS...Minor roadway flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
&&
$$
Johnson3 follow-up statements
466
WHUS41 KPHI 251053
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
553 AM EST Fri Dec 25 2020
MDZ012-251300-
/O.EXT.KPHI.CF.Y.0038.000000T0000Z-201225T1300Z/
Kent MD-
553 AM EST Fri Dec 25 2020
...COASTAL FLOOD ADVISORY NOW IN EFFECT UNTIL 8 AM EST THIS
MORNING...
* WHAT...Up to one half foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
* WHERE...Kent MD.
* WHEN...Until 8 AM EST this morning.
* IMPACTS...At this level, flooding begins on the most
vulnerable roads in bayside communities and along tidal
waterways. Some partial or full road closures are possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Coastal Flood Advisory means that minor tidal flooding is
expected. Minor tidal flooding often results in some road
closures. Usually, the most vulnerable roadways will flood.
Do not leave your vehicle at a location that is prone to tidal
flooding. Do not drive your vehicle through flood waters. The
water may be deeper than you think it is. You will be putting
yourself in danger and your vehicle may be damaged, leading to
costly repairs.
Visit the Advanced Hydrologic Prediction Service at
water.weather.gov/ahps for additional water level and flood
impact information for your local tide gauge.
&&
Time of high total tides are approximate to the nearest hour.
Chesapeake Bay at Tolchester Beach
MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
MHHW Categories - Minor 1.8 ft, Moderate 2.8 ft, Major 3.8 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
25/01 PM 2.8 1.1 2.3 None
26/03 AM 1.1 -0.6 0.5 None
26/05 PM 1.5 -0.2 0.3 None
27/05 AM 0.9 -0.8 0.3 None
27/06 PM 1.9 0.2 0.7 None
&&
$$
DEZ003-004-251700-
/O.CON.KPHI.CF.S.0028.000000T0000Z-201225T1700Z/
Inland Sussex-Delaware Beaches-
553 AM EST Fri Dec 25 2020
* WHAT...Up to one 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 morning.
* 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.
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
-------- --------- --------- --------- --------
25/05 AM 5.2 0.5 1.3 None
25/05 PM 2.6 -2.1 -0.7 None
26/06 AM 3.4 -1.2 -0.7 None
26/06 PM 2.8 -1.9 -0.5 None
27/07 AM 3.9 -0.8 -0.4 None
27/07 PM 3.3 -1.4 0.0 None
&&
$$
NJZ020-026-251700-
/O.CON.KPHI.CF.S.0028.000000T0000Z-201225T1700Z/
Ocean-Coastal Ocean-
553 AM EST Fri Dec 25 2020
* WHAT...Up to one foot of inundation above ground level in low-
lying areas near shorelines and tidal waterways.
* WHERE...Barnegat Bay and the tidal waterways that flow into it.
* WHEN...Through this morning.
* IMPACTS...Minor roadway flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
&&
Time of high total tides are approximate to the nearest hour.
Barnegat Bay at Barnegat Light
MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
MHHW Categories - Minor 1.0 ft, Moderate 2.0 ft, Major 3.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
25/04 AM 3.3 0.8 1.3 None
25/04 PM 1.8 -0.7 0.1 None
26/05 AM 1.9 -0.6 -0.3 None
26/05 PM 1.4 -1.1 -0.3 None
27/06 AM 2.1 -0.4 -0.2 None
27/06 PM 1.7 -0.8 0.0 None
&&
$$891
WHUS41 KPHI 251254
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
754 AM EST Fri Dec 25 2020
MDZ012-251400-
/O.EXP.KPHI.CF.Y.0038.000000T0000Z-201225T1300Z/
Kent MD-
754 AM EST Fri Dec 25 2020
...COASTAL FLOOD ADVISORY WILL EXPIRE AT 8 AM EST THIS MORNING...
Coastal flooding is no longer a threat in the area.
$$
NJZ018-019-PAZ071-106-251700-
/O.EXB.KPHI.CF.Y.0038.201225T1300Z-201225T1800Z/
Camden-Northwestern Burlington-Philadelphia-Lower Bucks-
754 AM EST Fri Dec 25 2020
...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
* WHAT...Up to one half foot of inundation above ground level
expected in low-lying areas near shorelines and tidal
waterways.
* WHERE...In New Jersey, Camden and Northwestern Burlington. In
Pennsylvania, Philadelphia and Lower Bucks.
* WHEN...Until 1 PM EST this afternoon.
* IMPACTS...At this level, flooding begins on the most
vulnerable roads in bayside communities and 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 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 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
-------- --------- --------- --------- --------
25/10 AM 8.5 1.8 2.8 Minor
25/11 PM 6.2 -0.5 0.9 None
26/11 AM 6.4 -0.3 0.6 None
26/11 PM 5.7 -1.0 0.5 None
27/12 PM 6.6 -0.1 0.7 None
28/12 AM 6.2 -0.5 1.0 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
-------- --------- --------- --------- --------
25/10 AM 9.7 2.0 3.5 Minor
25/11 PM 7.7 -0.0 1.2 None
26/12 PM 7.6 -0.1 0.8 None
27/12 AM 7.1 -0.6 0.6 None
27/12 PM 7.7 -0.0 0.7 None
28/01 AM 7.6 -0.1 1.1 None
&&
$$
DEZ003-004-251700-
/O.CON.KPHI.CF.S.0028.000000T0000Z-201225T1700Z/
Inland Sussex-Delaware Beaches-
754 AM EST Fri Dec 25 2020
* WHAT...Up to one 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 morning.
* 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.
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
-------- --------- --------- --------- --------
25/06 AM 4.2 -0.5 0.5 None
25/05 PM 2.9 -1.8 -0.4 None
26/06 AM 3.5 -1.2 -0.6 None
26/06 PM 2.9 -1.8 -0.4 None
27/07 AM 4.2 -0.5 -0.1 None
27/07 PM 3.6 -1.1 0.3 None
&&
$$
NJZ020-026-251700-
/O.CON.KPHI.CF.S.0028.000000T0000Z-201225T1700Z/
Ocean-Coastal Ocean-
754 AM EST Fri Dec 25 2020
* WHAT...Up to one foot of inundation above ground level in low-
lying areas near shorelines and tidal waterways.
* WHERE...Barnegat Bay and the tidal waterways that flow into it.
* WHEN...Through this morning.
* IMPACTS...Minor roadway flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
&&
Time of high total tides are approximate to the nearest hour.
Barnegat Bay at Barnegat Light
MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft
MHHW Categories - Minor 1.0 ft, Moderate 2.0 ft, Major 3.0 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
25/04 PM 2.1 -0.4 0.4 None
26/05 AM 2.0 -0.5 -0.2 None
26/05 PM 1.5 -1.0 -0.2 None
27/05 AM 2.2 -0.3 0.0 None
27/06 PM 1.8 -0.7 0.1 None
&&
$$348
WHUS41 KPHI 251601
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
1101 AM EST Fri Dec 25 2020
NJZ018-019-PAZ071-106-251715-
/O.CAN.KPHI.CF.Y.0038.000000T0000Z-201225T1800Z/
Camden-Northwestern Burlington-Philadelphia-Lower Bucks-
1101 AM EST Fri Dec 25 2020
...COASTAL FLOOD ADVISORY IS CANCELLED...
Water levels are now below flood stage and will continue to fall
through the afternoon. Since the threat of coastal flooding has
now ended, the Coastal Flood Advisory has been cancelled.
$$
DEZ003-004-251715-
/O.CON.KPHI.CF.S.0028.000000T0000Z-201225T1700Z/
Inland Sussex-Delaware Beaches-
1101 AM EST Fri Dec 25 2020
* WHAT...Up to one foot of inundation above ground level in low-
lying areas near shorelines and tidal waterways.
* WHERE...Little Assawoman Bay and the tidal waterways that flow
into it.
* WHEN...Through this morning.
* IMPACTS...Minor roadway flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
&&
Time of high total tides are approximate to the nearest hour.
Delaware Bay at Lewes
MLLW Categories - Minor 6.0 ft, Moderate 7.0 ft, Major 8.0 ft
MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 3.3 ft
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
25/05 PM 3.0 -1.7 -0.3 None
26/06 AM 3.5 -1.2 -0.6 None
26/06 PM 2.9 -1.8 -0.4 None
27/07 AM 4.2 -0.5 -0.1 None
27/07 PM 3.6 -1.1 0.3 None
28/07 AM 4.3 -0.4 -0.2 None
&&
$$
NJZ020-026-251715-
/O.CON.KPHI.CF.S.0028.000000T0000Z-201225T1700Z/
Ocean-Coastal Ocean-
1101 AM EST Fri Dec 25 2020
* WHAT...Up to one 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...Through this morning.
* 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
-------- --------- --------- --------- --------
25/04 PM 2.4 -0.1 0.7 None
26/05 AM 2.1 -0.4 -0.1 None
26/05 PM 1.6 -0.9 -0.1 None
27/06 AM 2.4 -0.1 0.1 None
27/06 PM 2.0 -0.5 0.3 None
28/06 AM 2.6 0.1 0.2 None
&&
$$The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 24, 8:39 PM EST | Areal Flood Advisory | PHI | Cumberland, Gloucester, Salem | 6 hr |
| Dec 24, 9:08 PM EST | Coastal Flood Advisory | PHI | Burlington, Camden | 14 hr |
| Dec 24, 9:16 PM EST | Areal Flood Advisory | PHI | Hunterdon, Warren | 3 hr |
| Dec 24, 9:38 PM EST | Areal Flood Warning | PHI | Camden | 14 hr |
| Dec 24, 11:10 PM EST | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Salem | 4 hr |
| Dec 24, 11:48 PM EST | Areal Flood Warning | PHI | Hunterdon, Mercer, Morris, Somerset, Warren | 15 hr |
| Dec 25, 12:00 AM EST | Areal Flood Warning | PHI | Middlesex, Somerset | 6 hr |
| Dec 25, 1:37 AM EST | Areal Flood Advisory | PHI | Morris, Sussex, Warren | 10 hr |
| Dec 25, 1:56 AM EST | Areal Flood Warning | PHI | Burlington, Camden | 7 hr |
| Dec 25, 2:05 AM EST | River Flood Warning | PHI | Hunterdon, Somerset | 4 hr |
| Dec 25, 3:22 AM EST | Gale Warning | PHI | 6 hr | |
| Dec 25, 3:22 AM EST | Small Craft Advisory | PHI | 51 hr | |
| Dec 25, 5:43 AM EST | Areal Flood Advisory | PHI | Mercer, Middlesex, Somerset | 3 hr |
| Dec 25, 7:25 AM EST | River Flood Warning | PHI | Morris, Passaic | 37 hr |
| Dec 25, 11:27 AM EST | Areal Flood Warning | PHI | Sussex, Warren | 16 hr |
| Dec 25, 12:17 PM EST | River Flood Warning | PHI | Middlesex, Somerset | 9 hr |
| Dec 25, 12:53 PM EST | Coastal Flood Statement | PHI | Burlington, Ocean | 4 hr |
| Dec 25, 2:11 PM EST | River Flood Warning | PHI | Middlesex, Somerset | 7 hr |
| Dec 25, 2:12 PM EST | River Flood Warning | PHI | Somerset | 20 hr |
| Dec 25, 2:26 PM EST | River Flood Warning | PHI | Hunterdon, Somerset | 3 hr |
| Dec 25, 6:25 PM EST | River Flood Warning | PHI | Morris | 21 hr |
| Dec 24, 10:52 PM EST | River Flood Warning | PHI | New Castle | 7 hr |
| Dec 25, 12:08 AM EST | River Flood Warning | PHI | New Castle | 7 hr |
| Dec 25, 1:28 AM EST | River Flood Warning | PHI | New Castle | 8 hr |
Nearby
Coastal Flood Statements in New Jersey, 2020Coastal Flood Statements in Delaware, 2020Every coastal flood statement in 2020
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.