Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 174, NWS Philadelphia/Mount Holly

July 22, 20204 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 22, 2020, 7:58 PM EDT for 4 counties in New Jersey. It was in force for 47 min. 5 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 22, 2020, 7:58 PM EDT (23:58 UTC)
Expired: Jul 22, 2020, 8:45 PM EDT
In force: 47 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 42 km from the middle of the area, began a volume at 00:03 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 22, 8:06 PM EDT	TSTM WND GST 62	4 Se Mystic Island, NJ	WEATHERFLOW GAUGE.
Jul 22, 8:06 PM EDT	TSTM WND GST 62	5 Se Mystic Island, NJ	HADS STATION.
Jul 22, 8:08 PM EDT	TSTM WND GST 64	4 Se Mystic Island, NJ	CORRECTS PREVIOUS TSTM WND GST REPORT FROM 4 SE MYSTIC ISLAND. WEATHERFLOW STATION.
Jul 22, 8:11 PM EDT	TSTM WND GST 73	2 Sw Beach Haven, NJ	CWOP STATION.
Jul 22, 8:41 PM EDT	TSTM WND GST 64	4 Se Mystic Island, NJ	WEATHERFLOW STATION.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 22, 2:57 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 12.0 hours before the alert went out and 184 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: 15 J/kg
Mixed-layer CIN: -173 J/kg
Mixed-layer LCL: 1410 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 183 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

774 
WUUS51 KPHI 222358
SVRPHI
NJC001-005-007-029-230045-
/O.NEW.KPHI.SV.W.0174.200722T2358Z-200723T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
758 PM EDT Wed Jul 22 2020

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Eastern Atlantic County in southern New Jersey...
  Central Ocean County in southern New Jersey...
  East central Camden County in southern New Jersey...
  Southeastern Burlington County in southern New Jersey...

* Until 845 PM EDT.

* At 758 PM EDT, severe thunderstorms were located along a line
  extending from Shamong to near New Gretna to near Brigantine,
  moving east at 40 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, Barnegat, Hammonton, Beachwood, Brigantine, Absecon,
  Shamong, Egg Harbor City, Tuckerton, Surf City, Port Republic,
  Atsion, Wading River, Holiday City South, Warren Grove, Chatsworth,
  Wharton State Forest, Holiday City-Berkeley, Bamber Lake and Cedar
  Glen Lakes.

This includes the following highways...
 Garden State Parkway between mile markers 42 and 80.
 Atlantic City Expressway near mile marker 0.

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 these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3965 7385 3954 7400 3930 7418 3926 7438
      3954 7457 3978 7484 4001 7430
TIME...MOT...LOC 2358Z 249DEG 36KT 3975 7470 3957 7449 3936 7434 

HAIL...0.75IN
WIND...60MPH
 
$$

MPS

3 follow-up statements

270 
WWUS51 KPHI 230020
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
820 PM EDT Wed Jul 22 2020

NJC001-007-230029-
/O.CAN.KPHI.SV.W.0174.000000T0000Z-200723T0045Z/
Atlantic NJ-Camden NJ-
820 PM EDT Wed Jul 22 2020

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ATLANTIC AND EAST
CENTRAL CAMDEN COUNTIES 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 1000 PM EDT for
southern New Jersey.

LAT...LON 3955 7399 3936 7413 3962 7431 3985 7459
      3999 7427 3975 7398
TIME...MOT...LOC 0019Z 249DEG 36KT 3982 7446 3964 7425 3943 7410 

$$

NJC005-029-230045-
/O.CON.KPHI.SV.W.0174.000000T0000Z-200723T0045Z/
Ocean NJ-Burlington NJ-
820 PM EDT Wed Jul 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR CENTRAL OCEAN AND EAST CENTRAL BURLINGTON COUNTIES...

At 819 PM EDT, severe thunderstorms were located along a line
extending from near Old Halfway to near Beach Haven West to 15 miles
east of Brigantine, moving east at 40 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...
Barnegat, Beachwood, Surf City, Holiday City-Berkeley, Bamber Lake,
Brookville, Holiday City South, Warren Grove, Pine Ridge At
Crestwood, Chatsworth, Old Halfway, Penn State Forest, Beach Haven
West, South Toms River, Silver Ridge, Ocean Acres, Holiday City,
Manahawkin, Holiday Heights and Waretown.

This includes Garden State Parkway between mile markers 59 and 80.
 
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 these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3955 7399 3936 7413 3962 7431 3985 7459
      3999 7427 3975 7398
TIME...MOT...LOC 0019Z 249DEG 36KT 3982 7446 3964 7425 3943 7410 

HAIL...0.75IN
WIND...70MPH
 
$$

MPS

347 
WWUS51 KPHI 230033
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
833 PM EDT Wed Jul 22 2020

NJC005-230043-
/O.CAN.KPHI.SV.W.0174.000000T0000Z-200723T0045Z/
Burlington NJ-
833 PM EDT Wed Jul 22 2020

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BURLINGTON COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southern New Jersey.

LAT...LON 3969 7415 3985 7425 3990 7416 3976 7399
      3975 7398 3973 7398
TIME...MOT...LOC 0033Z 243DEG 36KT 3981 7412 

$$

NJC029-230045-
/O.CON.KPHI.SV.W.0174.000000T0000Z-200723T0045Z/
Ocean NJ-
833 PM EDT Wed Jul 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR EAST CENTRAL OCEAN COUNTY...

At 833 PM EDT, a severe thunderstorm was located near Barnegat, or 12
miles south of Toms River, moving northeast at 40 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...
Waretown.

This includes Garden State Parkway between mile markers 72 and 75.
 
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 3969 7415 3985 7425 3990 7416 3976 7399
      3975 7398 3973 7398
TIME...MOT...LOC 0033Z 243DEG 36KT 3981 7412 

HAIL...0.75IN
WIND...70MPH
 
$$

MPS

437 
WWUS51 KPHI 230039
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
839 PM EDT Wed Jul 22 2020

NJC029-230048-
/O.EXP.KPHI.SV.W.0174.000000T0000Z-200723T0045Z/
Ocean NJ-
839 PM EDT Wed Jul 22 2020

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL OCEAN COUNTY WILL
EXPIRE AT 845 PM 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.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southern New Jersey.

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 3969 7415 3985 7425 3990 7416 3976 7399
      3975 7398 3973 7398
TIME...MOT...LOC 0038Z 249DEG 36KT 3982 7408 

$$

MPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 10:57 PM EDT	Special Marine Warning	PHI		63 min
Jul 22, 2:10 PM EDT	Severe Thunderstorm Warning	PHI	Warren	50 min
Jul 22, 3:04 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	30 min
Jul 22, 3:18 PM EDT	Special Weather Statement	PHI	Morris, Warren	42 min
Jul 22, 3:50 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Sussex, Warren	29 min
Jul 22, 4:33 PM EDT	Special Weather Statement	PHI	Morris	57 min
Jul 22, 4:56 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset	49 min
Jul 22, 5:16 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Sussex, Warren	59 min
Jul 22, 5:23 PM EDT	Areal Flood Advisory	PHI	Warren	3 hr
Jul 22, 5:33 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester	57 min
Jul 22, 5:40 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Hunterdon, Mercer, Somerset	65 min
Jul 22, 5:49 PM EDT	Special Marine Warning	PHI		86 min
Jul 22, 5:54 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	51 min
Jul 22, 6:04 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren	60 min
Jul 22, 6:12 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Salem	48 min
Jul 22, 6:17 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset	52 min
Jul 22, 6:46 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem	44 min
Jul 22, 6:47 PM EDT	Special Marine Warning	PHI		28 min
Jul 22, 6:52 PM EDT	Areal Flood Advisory	PHI	Middlesex, Somerset	113 min
Jul 22, 6:52 PM EDT	Special Marine Warning	PHI		41 min
Jul 22, 7:20 PM EDT	Special Marine Warning	PHI		55 min
Jul 22, 7:23 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more	52 min
Jul 22, 7:59 PM EDT	Special Marine Warning	PHI		61 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2020 Every 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.