Alert archive / New Jersey / Flash Flood Warnings in 2020
Flash Flood Warning 44, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 6, 2020, 7:33 AM EDT for Cumberland County, Salem County, New Jersey. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 6, 2020, 7:33 AM EDT (11:33 UTC)
- Expired
- Aug 6, 2020, 9:52 AM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cumberland County, NJ, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 64 km from the middle of the area, began a volume at 11:35 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, 11.6 hours before the alert went out and 160 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
- 1920 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 772 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
928
WGUS51 KPHI 061133
FFWPHI
NJC011-033-061430-
/O.NEW.KPHI.FF.W.0044.200806T1133Z-200806T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
733 AM EDT Thu Aug 6 2020
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
Cumberland County in southern New Jersey...
Southern Salem County in southern New Jersey...
* Until 1030 AM EDT.
* At 732 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to one inch of rain has
already fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that could experience flooding include...
Vineland, Millville, Bridgeton, Cumberland, Laurel Lake, Greenwich,
Shiloh, Newport, Mauricetown, Leesburg, Olivet, Port Norris,
Dividing Creek, Newport Meadows, Fairton, Bricksboro, Cedarville,
Port Elizabeth, Bivalve and Seabrook Farms.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3918 7499 3918 7517 3927 7532 3945 7551
3956 7524 3959 7511 3942 7486
FLASH FLOOD...RADAR INDICATED
$$
BAH2 follow-up statements
481
WGUS71 KPHI 061220
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
820 AM EDT Thu Aug 6 2020
NJC011-033-061430-
/O.CON.KPHI.FF.W.0044.000000T0000Z-200806T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cumberland NJ-Salem NJ-
820 AM EDT Thu Aug 6 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 AM EDT FOR
CUMBERLAND AND SOUTHERN SALEM COUNTIES...
At 818 AM EDT, gauge reports indicated thunderstorms producing heavy
rain across the warned area. Up to one inch of rain has already
fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Local gauges have reported one to two inches of rain has
already fallen across the area.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
Some locations that could experience flooding include...
Vineland, Millville, Bridgeton, Cumberland, Laurel Lake, Greenwich,
Shiloh, Newport, Mauricetown, Leesburg, Olivet, Port Norris, Dividing
Creek, Newport Meadows, Fairton, Bricksboro, Cedarville, Port
Elizabeth, Bivalve and Seabrook Farms.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3918 7499 3918 7517 3927 7532 3945 7551
3956 7524 3959 7511 3942 7486
FLASH FLOOD...GAUGE INDICATED
$$
BAH215
WGUS71 KPHI 061352
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
952 AM EDT Thu Aug 6 2020
NJC011-033-061402-
/O.CAN.KPHI.FF.W.0044.000000T0000Z-200806T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cumberland NJ-Salem NJ-
952 AM EDT Thu Aug 6 2020
...THE FLASH FLOOD WARNING FOR CUMBERLAND AND SOUTHERN SALEM COUNTIES
IS CANCELLED...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 3918 7499 3918 7517 3927 7532 3945 7551
3956 7524 3959 7511 3942 7486
$$
BAHThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 3:37 AM EDT | Flash Flood Watch | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 7 more | 44 hr |
| Aug 6, 5:27 AM EDT | Special Marine Warning | PHI | 63 min | |
| Aug 6, 6:58 AM EDT | Special Marine Warning | PHI | 92 min | |
| Aug 6, 7:03 AM EDT | Areal Flood Advisory | PHI | Atlantic, Cumberland, Gloucester, Salem | 3 hr |
| Aug 6, 7:18 AM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 42 min |
| Aug 6, 7:27 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 48 min |
| Aug 6, 7:31 AM EDT | Special Marine Warning | PHI | 59 min | |
| Aug 6, 7:33 AM EDT | Special Marine Warning | PHI | 57 min | |
| Aug 6, 7:47 AM EDT | Special Marine Warning | PHI | 88 min | |
| Aug 6, 7:52 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 53 min |
| Aug 6, 8:04 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 41 min |
| Aug 6, 8:09 AM EDT | Special Marine Warning | PHI | 66 min | |
| Aug 6, 8:23 AM EDT | Special Marine Warning | PHI | 67 min | |
| Aug 6, 8:34 AM EDT | Special Weather Statement | PHI | Atlantic | 26 min |
Nearby
Flash Flood Warnings in New Jersey, 2020Every flash flood warning 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.