Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 61, NWS Philadelphia/Mount Holly

June 4, 2021Atlantic County, Cape May County, Cumberland County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 4, 2021, 6:27 PM EDT for Atlantic County, Cape May County, Cumberland County, New Jersey. It was in force for 48 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: Jun 4, 2021, 6:27 PM EDT (22:27 UTC)
Expired: Jun 4, 2021, 7:15 PM EDT
In force: 48 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 Philadelphia radar (KDIX), 58 km from the middle of the area, began a volume at 22:31 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 4, 3:09 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.5 hours before the alert went out and 183 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 396 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 545 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

751 
WUUS51 KPHI 042227
SVRPHI
NJC001-009-011-042315-
/O.NEW.KPHI.SV.W.0061.210604T2227Z-210604T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
627 PM EDT Fri Jun 4 2021

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Atlantic County in southern New Jersey...
  East central Cumberland County in southern New Jersey...
  Northeastern Cape May County in southern New Jersey...

* Until 715 PM EDT.

* At 627 PM EDT, severe thunderstorms were located along a line
  extending from near Pomona to near Dorothy, moving east at 25 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...
  Vineland, Atlantic City, Ocean City, Pleasantville, Somers Point,
  Ventnor City, Brigantine, Northfield, Absecon, Margate City, Egg
  Harbor City, Estell Manor, Port Republic, Longport, Corbin City,
  Pomona, Mays Landing, Beesleys Point, English Creek and Marmora.

People at the Atlantic County Mega Site should seek safe shelter
immediately!

This includes the following highways...
 Garden State Parkway between mile markers 25 and 46.
 Atlantic City Expressway between mile markers 0 and 18.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3947 7425 3923 7462 3943 7500 3956 7458
TIME...MOT...LOC 2227Z 286DEG 21KT 3950 7459 3939 7488 

HAIL...1.00IN
WIND...60MPH
 
$$

JEO

2 follow-up statements

651 
WWUS51 KPHI 042251
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
651 PM EDT Fri Jun 4 2021

NJC011-042301-
/O.CAN.KPHI.SV.W.0061.000000T0000Z-210604T2315Z/
Cumberland NJ-
651 PM EDT Fri Jun 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CUMBERLAND COUNTY
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
southern New Jersey.

LAT...LON 3947 7425 3923 7462 3935 7486 3940 7486
      3953 7448
TIME...MOT...LOC 2251Z 286DEG 21KT 3946 7443 3935 7472 

$$

NJC001-009-042315-
/O.CON.KPHI.SV.W.0061.000000T0000Z-210604T2315Z/
Atlantic NJ-Cape May NJ-
651 PM EDT Fri Jun 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR SOUTHERN ATLANTIC AND NORTHEASTERN CAPE MAY COUNTIES...

At 651 PM EDT, severe thunderstorms were located along a line
extending from near Brigantine to near English Creek, moving east at
25 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,
Brigantine, Northfield, Absecon, Margate City, Estell Manor, Port
Republic, Longport, Corbin City, Pomona, Beesleys Point, English
Creek, Marmora, Dorothy, Mays Landing and Linwood.

People at the Atlantic County Mega Site should seek safe shelter
immediately!

This includes the following highways...
 Garden State Parkway between mile markers 25 and 44.
 Atlantic City Expressway between mile markers 0 and 13.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3947 7425 3923 7462 3935 7486 3940 7486
      3953 7448
TIME...MOT...LOC 2251Z 286DEG 21KT 3946 7443 3935 7472 

HAIL...1.00IN
WIND...60MPH
 
$$

JEO

713 
WWUS51 KPHI 042315
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
715 PM EDT Fri Jun 4 2021

NJC001-009-042325-
/O.EXP.KPHI.SV.W.0061.000000T0000Z-210604T2315Z/
Atlantic NJ-Cape May NJ-
715 PM EDT Fri Jun 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ATLANTIC AND
NORTHEASTERN CAPE MAY COUNTIES HAS EXPIRED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been allowed to expire.  However gusty
winds are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
southern New Jersey.

LAT...LON 3947 7425 3923 7462 3935 7486 3940 7486
      3953 7448
TIME...MOT...LOC 2315Z 286DEG 21KT 3946 7443 3935 7472 

$$

JEO

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 3, 8:14 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth, Ocean	19 min
Jun 3, 8:44 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth	30 min
Jun 3, 8:55 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	10 min
Jun 4, 1:07 PM EDT	Special Weather Statement	PHI	Sussex	38 min
Jun 4, 1:45 PM EDT	Areal Flood Advisory	PHI	Warren	97 min
Jun 4, 1:49 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	41 min
Jun 4, 2:43 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren	62 min
Jun 4, 2:49 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren	70 min
Jun 4, 3:16 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Hunterdon, Mercer, Middlesex, Monmouth and 1 more	98 min
Jun 4, 3:18 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer	42 min
Jun 4, 3:23 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Somerset	67 min
Jun 4, 3:46 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Mercer	44 min
Jun 4, 4:12 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	63 min
Jun 4, 4:20 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	40 min
Jun 4, 4:22 PM EDT	Special Marine Warning	PHI		53 min
Jun 4, 4:23 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	52 min
Jun 4, 4:30 PM EDT	Areal Flood Advisory	PHI	Middlesex, Monmouth, Ocean	63 min
Jun 4, 5:09 PM EDT	Special Marine Warning	PHI		2 hr
Jun 4, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	18 min
Jun 4, 5:32 PM EDT	Special Marine Warning	PHI		58 min
Jun 4, 6:18 PM EDT	Special Weather Statement	PHI	Atlantic	42 min
Jun 4, 7:13 PM EDT	Special Marine Warning	PHI		62 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2021 Every severe thunderstorm warning in 2021

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.