Alert archive / New Jersey / Coastal Flood Statements in 2020
Coastal Flood Statement 26, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this coastal flood statement at Dec 1, 2020, 8:49 AM EST for Ocean County, New Jersey. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Dec 1, 2020, 8:49 AM EST (13:49 UTC)
- Expired
- Dec 1, 2020, 4:00 PM EST
- In force
- 7 hr
- Issued by
- NWS Philadelphia/Mount Holly
County Ocean County, NJ
The radar
The Philadelphia radar (KDIX), 16 km from the middle of the area, began a volume at 13:52 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
Brookhaven, NY (KOKX), launched 12:00Z, 1.8 hours before the alert went out and 162 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
- 31 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 823 m above ground
- 0-6 km bulk shear
- 93 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 298 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
757 WHUS41 KPHI 011349 CFWPHI Coastal Hazard Message National Weather Service Mount Holly NJ 849 AM EST Tue Dec 1 2020 NJZ020-011700- /O.NEW.KPHI.CF.S.0026.201201T1349Z-201201T1700Z/ Ocean- 849 AM EST Tue Dec 1 2020 * 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 noon EST today. * IMPACTS...Minor roadway flooding is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && $$
3 follow-up statements
779 WHUS41 KPHI 011653 CFWPHI Coastal Hazard Message National Weather Service Mount Holly NJ 1153 AM EST Tue Dec 1 2020 NJZ020-012100- /O.EXT.KPHI.CF.S.0026.000000T0000Z-201201T2100Z/ Ocean- 1153 AM EST Tue Dec 1 2020 ...MINOR FLOODING ALONG BARNEGAT BAY... * WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. * WHERE...Barnegat Bay and the tidal waterways that flow into it. * WHEN...Until 4 PM EST this afternoon. * IMPACTS...Minor roadway flooding is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roadways. && BAH $$
546
WHUS41 KPHI 011837
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
137 PM EST Tue Dec 1 2020
NJZ015-017>019-PAZ070-071-106-012300-
/O.NEW.KPHI.CF.Y.0036.201201T1837Z-201201T2300Z/
Mercer-Gloucester-Camden-Northwestern Burlington-Delaware-
Philadelphia-Lower Bucks-
137 PM EST Tue Dec 1 2020
...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...In New Jersey, Mercer, Gloucester, Camden and
Northwestern Burlington. In Pennsylvania, Delaware,
Philadelphia and Lower Bucks.
* WHEN...Until 6 PM EST this evening.
* 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 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
-------- --------- --------- --------- --------
01/03 PM 9.7 2.0 1.9 Minor
02/03 AM 7.4 -0.3 0.7 None
02/03 PM 8.4 0.7 0.5 None
03/04 AM 7.1 -0.6 0.5 None
03/04 PM 8.5 0.8 0.6 None
04/05 AM 7.1 -0.6 0.6 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
-------- --------- --------- --------- --------
01/02 PM 8.6 1.9 2.3 Minor
02/03 AM 6.2 -0.5 0.9 None
02/03 PM 6.9 0.2 0.6 None
03/03 AM 5.5 -1.2 0.3 None
03/03 PM 7.0 0.3 0.7 None
04/04 AM 6.0 -0.7 0.8 None
&&
$$
NJZ020-012100-
/O.CON.KPHI.CF.S.0026.000000T0000Z-201201T2100Z/
Ocean-
137 PM EST Tue Dec 1 2020
...MINOR FLOODING ALONG BARNEGAT BAY...
* WHAT...Up to one half foot of inundation above ground level in
low-lying areas near shorelines and tidal waterways.
* WHERE...Barnegat Bay and the tidal waterways that flow into it.
* WHEN...Until 4 PM EST this afternoon.
* IMPACTS...Minor roadway flooding is possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not drive through flooded roadways.
&&
$$567 WHUS41 KPHI 012106 CFWPHI Coastal Hazard Message National Weather Service Mount Holly NJ 406 PM EST Tue Dec 1 2020 NJZ015-017>019-PAZ070-071-106-012215- /O.CAN.KPHI.CF.Y.0036.000000T0000Z-201201T2300Z/ Mercer-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Lower Bucks- 406 PM EST Tue Dec 1 2020 ...LINGERING MINOR TIDAL FLOODING IS ENDING... Tide levels continue to decrease on the back bays of New Jersey. The lingering minor flooding is coming to an end. $$ NJZ020-012215- /O.EXP.KPHI.CF.S.0026.000000T0000Z-201201T2100Z/ Ocean- 406 PM EST Tue Dec 1 2020 ...COASTAL FLOOD ADVISORY IS CANCELLED... Tide levels continue to decrease. As a result, the Coastal Flood Advisory has been cancelled for the tidal Delaware River and its tributaries. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 30, 7:48 PM EST | Coastal Flood Statement | PHI | Ocean | 8 hr |
| Dec 1, 6:31 AM EST | River Flood Warning | PHI | Somerset | 20 hr |
| Dec 1, 7:18 AM EST | River Flood Warning | PHI | Middlesex, Somerset | 3 hr |
| Dec 1, 12:26 PM EST | River Flood Warning | PHI | Morris | 7 hr |
| Dec 1, 1:37 PM EST | Coastal Flood Advisory | PHI | Burlington, Camden, Gloucester, Mercer | 2 hr |
Nearby
Coastal Flood Statements in New Jersey, 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.