Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 212, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 6, 2020, 8:04 AM EDT for Atlantic County, Cape May County, Cumberland County, New Jersey. It was in force for 41 min. 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, 8:04 AM EDT (12:04 UTC)
- Expired
- Aug 6, 2020, 8:45 AM EDT
- In force
- 41 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Atlantic County, NJ, Cape May County, NJ, Cumberland County, NJ
The radar
The Dover AFB radar (KDOX), 85 km from the middle of the area, began a volume at 12:07 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 12:00Z, 0.1 hours before the alert went out and 155 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
- 1562 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 842 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.9
The text
As transmitted.
466
WUUS51 KPHI 061204
SVRPHI
NJC001-009-011-061245-
/O.NEW.KPHI.SV.W.0212.200806T1204Z-200806T1245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
804 AM EDT Thu Aug 6 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Atlantic County in southern New Jersey...
Southeastern Cumberland County in southern New Jersey...
Cape May County in southern New Jersey...
* Until 845 AM EDT.
* At 804 AM EDT, a severe thunderstorm was located over Dennisville,
or 13 miles west of Ocean City, moving east at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Atlantic City, Ocean City, Cape May, Pleasantville, Somers Point,
Ventnor City, Margate City, North Wildwood, Wildwood Crest,
Woodbine, Sea Isle City, Estell Manor, Avalon, West Cape May,
Longport, Stone Harbor, Corbin City, Cape May Court House, Scotch
Bonnet and Beesleys Point.
This includes the following highways...
Garden State Parkway between mile markers 0 and 31.
Atlantic City Expressway between mile markers 0 and 1.
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.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3922 7427 3910 7447 3893 7459 3892 7501
3929 7496 3940 7426
TIME...MOT...LOC 1204Z 263DEG 31KT 3922 7485
HAIL...0.75IN
WIND...60MPH
$$
MPS1 follow-up statement
223
WWUS51 KPHI 061238
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
838 AM EDT Thu Aug 6 2020
NJC001-009-011-061248-
/O.EXP.KPHI.SV.W.0212.000000T0000Z-200806T1245Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
838 AM EDT Thu Aug 6 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ATLANTIC...
SOUTHEASTERN CUMBERLAND AND CAPE MAY COUNTIES WILL EXPIRE AT 845 AM
EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 3922 7427 3910 7447 3893 7459 3892 7501
3929 7496 3940 7426
TIME...MOT...LOC 1238Z 263DEG 31KT 3928 7417
$$
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, 7:27 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 | 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, 8:09 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.