Alert archive / New Jersey / Coastal Flood Advisories in 2018
Coastal Flood Advisory 21, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this coastal flood advisory at Aug 9, 2018, 5:29 PM EDT for Burlington County, Mercer County, New Jersey; Bucks County, Pennsylvania. It took effect at Aug 10, 2018, 12:00 AM EDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Aug 9, 2018, 5:29 PM EDT (21:29 UTC)
- In effect from
- Aug 10, 2018, 12:00 AM EDT
- Expired
- Aug 10, 2018, 3:43 AM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Burlington County, NJ, Mercer County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 43 km from the middle of the area, began a volume at 21:31 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, 9.5 hours before the alert went out and 183 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
- 836 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 908 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.6
The text
As transmitted.
331
WHUS41 KPHI 092129
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
529 PM EDT Thu Aug 9 2018
NJZ015-019-PAZ106-100800-
/O.NEW.KPHI.CF.Y.0021.180810T0400Z-180810T0800Z/
Mercer-Northwestern Burlington-Lower Bucks-
529 PM EDT Thu Aug 9 2018
...COASTAL FLOOD ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 4 AM
EDT FRIDAY...
The National Weather Service in Mount Holly has issued a Coastal
Flood Advisory, which is in effect from midnight tonight to 4 AM
EDT Friday.
* LOCATIONS...The tidal Delaware River for Lower Bucks county in
Pennsylvania and for Mercer and Northwest Burlington counties in
New Jersey.
* TIMING...High tide occurs between 1 am and 3 am tonight.
* COASTAL FLOOD IMPACTS...Up to one foot of saltwater inundation
above ground level is possible in low-lying areas near
shorelines and tidal waterways. Minor flooding is possible in
Bristol, south Trenton, Hamilton Township, Burlington City,
Delran, and other locations near the Delaware River and its
tributaries.
* SURGE...Around 1 foot above the astronomical tide.
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.
Burlington NJ
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
-------- --------- --------- --------- --------
10/02 AM 9.8 2.1 1.2 Minor
10/02 PM 8.8 1.1 1.2 None
11/03 AM 10.0 2.3 1.2 Minor
11/03 PM 9.3 1.6 1.4 Minor
12/03 AM 10.3 2.6 1.4 Moderate
&&
$$
MPS1 follow-up statement
670
WHUS41 KPHI 100743
CFWPHI
Coastal Hazard Message
National Weather Service Mount Holly NJ
343 AM EDT Fri Aug 10 2018
NJZ015-019-PAZ106-100845-
/O.CAN.KPHI.CF.Y.0021.000000T0000Z-180810T0800Z/
Mercer-Northwestern Burlington-Lower Bucks-
343 AM EDT Fri Aug 10 2018
...COASTAL FLOOD ADVISORY IS CANCELLED...
The National Weather Service in Mount Holly has cancelled the
Coastal Flood Advisory.
High tide has passed, and water levels will continue to fall.
However, minor tidal flooding, and possibly some moderate tidal
flooding remains possible with many of the high tides through the
weekend.
&&
Time of high total tides are approximate to the nearest hour.
Burlington NJ
MLLW Categories - Minor 9.3 FT, Moderate 10.3 FT, Major 11.3 FT
MHHW Categories - Minor 1.6 FT, Moderate 2.6 FT, Major 3.6 FT
Total Total Departure
Day/Time Tide Tide from Norm Flood
ft MLLW ft MHHW ft Impact
-------- --------- --------- --------- --------
10/02 AM 9.8 2.1 1.2 Minor
10/02 PM 8.8 1.1 1.2 None
11/03 AM 10.0 2.3 1.2 Minor
11/03 PM 9.3 1.6 1.4 Minor
12/03 AM 10.3 2.6 1.4 Moderate
&&
$$The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 8:09 PM EDT | Areal Flood Advisory | PHI | Burlington, Mercer, Monmouth | 3 hr |
| Aug 8, 9:58 PM EDT | Special Weather Statement | PHI | Monmouth | 32 min |
| Aug 9, 2:06 AM EDT | Special Weather Statement | PHI | Morris | 24 min |
Nearby
Coastal Flood Advisories in New Jersey, 2018Coastal Flood Advisories in Pennsylvania, 2018Every coastal flood advisory in 2018
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.