Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 210, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 6, 2020, 7:27 AM EDT for Atlantic County, Cape May County, Cumberland County, New Jersey. It was in force for 48 min. 2 reports 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 6, 2020, 7:27 AM EDT (11:27 UTC)
- Expired
- Aug 6, 2020, 8:15 AM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Atlantic County, NJ, Cape May County, NJ, Cumberland County, NJ
The radar
The Dover AFB radar (KDOX), 48 km from the middle of the area, began a volume at 11:30 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 6, 7:33 AM EDT | TSTM WND DMG | Fortescue, NJ | SEVERAL REPORTS OF DOWNED WIRES NEAR AND NORTH OF FORTESCUE. TIME ESTIMATED FROM RADAR. |
| Aug 6, 7:35 AM EDT | MARINE TSTM WIND 49 | Fortescue, NJ | NJ WEATHERNET SITE NJ67. |
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 00:00Z, 11.5 hours before the alert went out and 140 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.
640
WUUS51 KPHI 061127
SVRPHI
NJC001-009-011-061215-
/O.NEW.KPHI.SV.W.0210.200806T1127Z-200806T1215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
727 AM EDT Thu Aug 6 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southern Atlantic County in southern New Jersey...
Southeastern Cumberland County in southern New Jersey...
Northwestern Cape May County in southern New Jersey...
* Until 815 AM EDT.
* At 726 AM EDT, a severe thunderstorm was located near Fortesque, or
15 miles east of Dover, moving east at 25 mph.
HAZARD...70 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Laurel Lake, Woodbine, Estell Manor, Mauricetown, Belleplain
Forest, Leesburg, Port Norris, Dividing Creek, Bricksboro,
Dennisville, Goshen, Port Elizabeth, Bivalve, Fortesque and Eldora.
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.
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Mount Holly NJ.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3904 7526 3920 7537 3940 7486 3915 7475
TIME...MOT...LOC 1126Z 248DEG 22KT 3916 7524
HAIL...0.75IN
WIND...70MPH
$$
MPS2 follow-up statements
279
WWUS51 KPHI 061156
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
756 AM EDT Thu Aug 6 2020
NJC001-009-011-061215-
/O.CON.KPHI.SV.W.0210.000000T0000Z-200806T1215Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
756 AM EDT Thu Aug 6 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM EDT
FOR SOUTHERN ATLANTIC...SOUTHEASTERN CUMBERLAND AND NORTHWESTERN CAPE
MAY COUNTIES...
At 756 AM EDT, a severe thunderstorm was located over Mauricetown, or
8 miles southeast of Millville, moving east at 35 mph.
HAZARD...70 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Laurel Lake, Woodbine, Estell Manor, Mauricetown, Belleplain Forest,
Leesburg, Bricksboro, Port Elizabeth, Bivalve, Port Norris and
Eldora.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3917 7502 3931 7509 3933 7503 3940 7486
3939 7485 3922 7478
TIME...MOT...LOC 1156Z 250DEG 31KT 3929 7498
HAIL...0.75IN
WIND...70MPH
$$
MPS423
WWUS51 KPHI 061207
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
807 AM EDT Thu Aug 6 2020
NJC001-009-011-061216-
/O.EXP.KPHI.SV.W.0210.000000T0000Z-200806T1215Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
807 AM EDT Thu Aug 6 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN ATLANTIC...
SOUTHEASTERN CUMBERLAND AND NORTHWESTERN CAPE MAY COUNTIES WILL
EXPIRE AT 815 AM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However, gusty
winds and heavy rain are still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
Remember, a Severe Thunderstorm Warning still remains in effect for
Cumberland, Atlantic, and Cape May counties until 845 am EDT.
LAT...LON 3917 7502 3931 7509 3933 7503 3940 7486
3939 7485 3922 7478
TIME...MOT...LOC 1206Z 248DEG 22KT 3931 7492
$$
MPSThe 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, 7:31 AM EDT | Special Marine Warning | PHI | 59 min | |
| Aug 6, 7:33 AM EDT | Flash Flood Warning | PHI | Cumberland, Salem | 2 hr |
| 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
Severe Thunderstorm Warnings in New Jersey, 2020Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.