Alert archive / New Jersey / Flash Flood Warnings in 2018
Flash Flood Warning 56, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 11, 2018, 1:07 PM EDT for Atlantic County, Cape May County, New Jersey. It was in force for 4 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 11, 2018, 1:07 PM EDT (17:07 UTC)
- Expired
- Aug 11, 2018, 5:00 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Atlantic County, NJ, Cape May County, NJ
The radar
The Philadelphia radar (KDIX), 69 km from the middle of the area, began a volume at 17:06 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 11, 1:09 PM EDT | FLOOD | Somers Point, NJ | REPORT WITH PICUTRES OF NEIGHBORHOOD ROADS COVERED IN ABOUT A FOOT OF WATER IN SOMERS POINT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 5.1 hours before the alert went out and 172 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
- 1571 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 1008 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.7
The text
As transmitted.
130
WGUS51 KPHI 111707
FFWPHI
NJC001-009-112100-
/O.NEW.KPHI.FF.W.0056.180811T1707Z-180811T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
107 PM EDT SAT AUG 11 2018
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
South central Atlantic County in southern New Jersey...
Northeastern Cape May County in southern New Jersey...
* Until 500 PM EDT.
* At 105 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. In
excess of two inches of rain have already fallen in only 40
minutes. Flash flooding is expected to begin shortly in the areas
of heaviest rain.
* Some locations that could experience flooding include...
Ocean City, Pleasantville, Somers Point, Ventnor City, Northfield,
Margate City, Estell Manor, Longport, Corbin City, Beesleys Point,
English Creek and Linwood.
Additional rainfall amounts of 1 inch are possible in the warned
area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
Please report flooding to your local law enforcement agency when you
can do so safely.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 3937 7446 3924 7459 3929 7468 3935 7467
3937 7463 3939 7457
$$
JRK1 follow-up statement
976
WGUS71 KPHI 112056
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
456 PM EDT SAT AUG 11 2018
NJC001-009-112105-
/O.EXP.KPHI.FF.W.0056.000000T0000Z-180811T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Atlantic NJ-Cape May NJ-
456 PM EDT SAT AUG 11 2018
...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL ATLANTIC AND
NORTHEASTERN CAPE MAY COUNTIES WILL EXPIRE AT 500 PM EDT...
The heavy rain has ended. While minor flooding is still possible,
the threat of flash flooding has ended.
LAT...LON 3937 7446 3924 7459 3929 7468 3935 7467
3937 7463 3939 7457
$$
jjmThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 3:24 AM EDT | Flash Flood Watch | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Hunterdon and 9 more | 20 hr |
| Aug 11, 4:26 AM EDT | Coastal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more | 24 hr |
| Aug 11, 5:27 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Warren | 4 hr |
| Aug 11, 6:06 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Warren | 6 hr |
| Aug 11, 6:31 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset | 7 hr |
| Aug 11, 7:16 AM EDT | Flash Flood Warning | PHI | Middlesex, Somerset | 4 hr |
| Aug 11, 10:49 AM EDT | Areal Flood Advisory | PHI | Middlesex, Somerset | 3 hr |
| Aug 11, 11:29 AM EDT | Areal Flood Advisory | PHI | Atlantic | 4 hr |
| Aug 11, 11:46 AM EDT | Special Marine Warning | PHI | 119 min | |
| Aug 11, 11:55 AM EDT | Special Weather Statement | PHI | Burlington | 35 min |
| Aug 11, 12:27 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Ocean | 4 hr |
| Aug 11, 12:39 PM EDT | Special Weather Statement | PHI | Ocean | 36 min |
| Aug 11, 12:55 PM EDT | Special Marine Warning | PHI | 65 min | |
| Aug 11, 1:26 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Aug 11, 1:42 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Aug 11, 1:51 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 39 min |
| Aug 11, 2:00 PM EDT | Flash Flood Warning | PHI | Warren | 9 hr |
| Aug 11, 2:05 PM EDT | Special Weather Statement | PHI | Cape May | 25 min |
| Aug 11, 2:06 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester | 3 hr |
| Aug 11, 2:19 PM EDT | Special Marine Warning | PHI | 86 min | |
| Aug 11, 2:20 PM EDT | Areal Flood Advisory | PHI | Cape May, Cumberland | 3 hr |
| Aug 11, 2:30 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Warren | 3 hr |
| Aug 11, 2:46 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset | 3 hr |
| Aug 11, 2:58 PM EDT | Special Weather Statement | PHI | Cumberland | 47 min |
| Aug 11, 3:06 PM EDT | Flash Flood Warning | PHI | Warren | 4 hr |
| Aug 11, 3:13 PM EDT | Special Weather Statement | PHI | Hunterdon | 47 min |
| Aug 11, 3:23 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex | 3 hr |
| Aug 11, 3:24 PM EDT | Special Weather Statement | PHI | Atlantic, Cumberland | 51 min |
| Aug 11, 3:32 PM EDT | Flash Flood Warning | PHI | Atlantic | 3 hr |
| Aug 11, 3:47 PM EDT | Flash Flood Warning | PHI | Morris | 3 hr |
| Aug 11, 4:11 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Aug 11, 4:28 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Aug 11, 5:00 PM EDT | Areal Flood Advisory | PHI | Gloucester, Salem | 3 hr |
| Aug 11, 5:26 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Warren | 4 hr |
| Aug 11, 5:36 PM EDT | Areal Flood Warning | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset | 4 hr |
| Aug 11, 6:11 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Aug 11, 6:12 PM EDT | Flash Flood Warning | PHI | Salem | 3 hr |
| Aug 11, 7:35 PM EDT | Areal Flood Advisory | PHI | Atlantic, Cumberland | 3 hr |
| Aug 11, 7:46 PM EDT | River Flood Warning | PHI | Essex, Morris, Passaic | 4 days |
Nearby
Flash Flood Warnings in New Jersey, 2018Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.