Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 96, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 1, 2020, 3:20 PM EDT for Atlantic County, Cape May County, Cumberland County, New Jersey. It was in force for 55 min. 8 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
- Jul 1, 2020, 3:20 PM EDT (19:20 UTC)
- Expired
- Jul 1, 2020, 4:15 PM EDT
- In force
- 55 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Atlantic County, NJ, Cape May County, NJ, Cumberland County, NJ
The radar
The Dover AFB radar (KDOX), 77 km from the middle of the area, began a volume at 19:24 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 |
|---|---|---|---|
| Jul 1, 3:40 PM EDT | HAIL 1 | Petersburg, NJ | TIME ESTIMATED BY RADAR. |
| Jul 1, 3:40 PM EDT | HAIL 1.75 | Petersburg, NJ | GOLF BALL SIZED HAIL REPORTED IN PETERSBURG. PICTURES RECEIVED VIA SOCIAL MEDIA. |
| Jul 1, 3:45 PM EDT | TSTM WND DMG | 1 Ene Seaville, NJ | TREE DOWN ON THE GARDEN STATE PARKWAY. TIME ESTIMATED FROM RADAR. |
| Jul 1, 3:45 PM EDT | HAIL 0.5 | Seaville, NJ | HAIL TO AROUND HALF INCH IN DIAMETER REPORTED IN SEAVILLE. TIME ESTIMATED FROM RADAR. |
| Jul 1, 4:02 PM EDT | HAIL 0.5 | Marmora, NJ | TIME VERIFIED BY RADAR. |
| Jul 1, 4:06 PM EDT | HAIL 0.25 | 2 Ne Seaville, NJ | |
| Jul 1, 4:10 PM EDT | HAIL 1 | 2 Sw Ocean City, NJ | MULTIPLE REPORTS OF QUARTER SIZE HAIL IN OCEAN CITY. TIME ESTIMATED FROM RADAR. |
| Jul 1, 4:13 PM EDT | MARINE TSTM WIND 49 | Ocean City, NJ |
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, 7.3 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
- 706 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 1227 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.4
The text
As transmitted.
174
WUUS51 KPHI 011920
SVRPHI
NJC001-009-011-012015-
/O.NEW.KPHI.SV.W.0096.200701T1920Z-200701T2015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
320 PM EDT Wed Jul 1 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern Atlantic County in southern New Jersey...
East central Cumberland County in southern New Jersey...
Northern Cape May County in southern New Jersey...
* Until 415 PM EDT.
* At 320 PM EDT, a severe thunderstorm was located over Corbin City,
or 8 miles west of Ocean City with additional storms nearby,
moving east at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
Atlantic City, Ocean City, Pleasantville, Somers Point, Ventnor
City, Northfield, Margate City, Woodbine, Sea Isle City, Estell
Manor, Avalon, Longport, Corbin City, Belleplain Forest, Beesleys
Point, English Creek, Seaville, Marmora, Dorothy and Bricksboro.
This includes Garden State Parkway between mile markers 14 and 34.
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.
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.
&&
LAT...LON 3931 7499 3941 7484 3936 7444 3923 7461
3907 7472
TIME...MOT...LOC 1920Z 284DEG 10KT 3928 7475
HAIL...1.00IN
WIND...60MPH
$$
Gorse2 follow-up statements
943
WWUS51 KPHI 011939
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
339 PM EDT Wed Jul 1 2020
NJC001-009-011-012015-
/O.CON.KPHI.SV.W.0096.000000T0000Z-200701T2015Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
339 PM EDT Wed Jul 1 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SOUTHWESTERN ATLANTIC...EAST CENTRAL CUMBERLAND AND NORTHERN CAPE
MAY COUNTIES...
At 339 PM EDT, a severe thunderstorm was located over Seaville, or
near Ocean City, moving southeast at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Atlantic City, Ocean City, Pleasantville, Somers Point, Ventnor City,
Northfield, Margate City, Woodbine, Sea Isle City, Estell Manor,
Avalon, Longport, Corbin City, Belleplain Forest, Beesleys Point,
English Creek, Seaville, Marmora, Dorothy and Bricksboro.
This includes Garden State Parkway between mile markers 14 and 34.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
Frequent cloud to ground lightning is occurring with this storm, and
the storm will affect the beaches. For your safety, immediately move
off the beach and seek shelter indoors.
&&
LAT...LON 3931 7499 3941 7484 3936 7444 3923 7461
3907 7472
TIME...MOT...LOC 1939Z 312DEG 11KT 3924 7470
HAIL...1.00IN
WIND...60MPH
$$
Gorse428
WWUS51 KPHI 012007
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
407 PM EDT Wed Jul 1 2020
NJC001-009-011-012016-
/O.EXP.KPHI.SV.W.0096.000000T0000Z-200701T2015Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
407 PM EDT Wed Jul 1 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN ATLANTIC...EAST
CENTRAL CUMBERLAND AND NORTHERN CAPE MAY COUNTIES WILL EXPIRE AT 415
PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small hail
and gusty winds are still possible with this thunderstorm.
LAT...LON 3931 7499 3941 7484 3936 7444 3923 7461
3907 7472
TIME...MOT...LOC 2006Z 284DEG 10KT 3922 7461
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 10:53 AM EDT | Special Weather Statement | PHI | Morris | 37 min |
| Jul 1, 11:08 AM EDT | Areal Flood Advisory | PHI | Morris, Somerset | 102 min |
| Jul 1, 12:28 PM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth | 119 min |
| Jul 1, 12:39 PM EDT | Special Marine Warning | PHI | 96 min | |
| Jul 1, 1:30 PM EDT | Special Weather Statement | PHI | Ocean | 45 min |
| Jul 1, 1:45 PM EDT | Special Weather Statement | PHI | Atlantic | 45 min |
| Jul 1, 2:17 PM EDT | Special Weather Statement | PHI | Ocean | 43 min |
| Jul 1, 2:25 PM EDT | Special Weather Statement | PHI | Atlantic | 35 min |
| Jul 1, 2:55 PM EDT | Special Weather Statement | PHI | Atlantic | 65 min |
| Jul 1, 3:10 PM EDT | Flash Flood Warning | PHI | Atlantic | 3 hr |
| Jul 1, 3:17 PM EDT | Special Marine Warning | PHI | 88 min | |
| Jul 1, 4:05 PM EDT | Flash Flood Warning | PHI | Atlantic, Cape May, Cumberland | 3 hr |
| Jul 1, 4:15 PM EDT | Special Weather Statement | PHI | Cape May | 45 min |
| Jul 1, 5:09 PM EDT | Special Weather Statement | PHI | Cumberland | 51 min |
| Jul 1, 5:27 PM EDT | Areal Flood Advisory | PHI | Cumberland, Salem | 55 min |
| Jul 1, 7:06 PM EDT | Special Weather Statement | PHI | Somerset | 24 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.