Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 173, NWS Philadelphia/Mount Holly

July 22, 20207 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 22, 2020, 7:23 PM EDT for 7 counties in New Jersey. It was in force for 52 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, 7:23 PM EDT (23:23 UTC)
Expired: Jul 22, 2020, 8:15 PM EDT
In force: 52 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, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 61 km from the middle of the area, began a volume at 23:26 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, 7:24 PM EDT	MARINE TSTM WIND 39	Sea Isle City, NJ	HADS SENSOR.
Jul 22, 7:34 PM EDT	TSTM WND DMG	Mays Landing, NJ	SEVERAL REPORTS OF TREES AND WIRES DOWN NEAR MAYS LANDING AND ESTELL MANOR. TIME ESTIMATED FROM RADAR.
Jul 22, 7:46 PM EDT	TSTM WND GST 63	Atlantic City Internati, NJ	A 63 MPH WIND GUST WAS MEASURED AT THE ATLANTIC CITY INTERNATIONAL AIRPORT.
Jul 22, 7:46 PM EDT	MARINE TSTM WIND 53	2 Se Pleasantville, NJ	PT POINT MESONET STATION.
Jul 22, 7:47 PM EDT	TSTM WND DMG	Egg Harbor City, NJ	SEVERAL REPORTS OF TREES AND WIRES DOWN NEAR EGG HARBOR CITY AND PORT REPUBLIC. TIME ESTIMATED FROM RADAR.

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

Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.4 hours before the alert went out and 180 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: 186 J/kg
Mixed-layer CIN: -242 J/kg
Mixed-layer LCL: 1368 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

394 
WUUS51 KPHI 222323
SVRPHI
NJC001-005-007-009-011-015-033-230015-
/O.NEW.KPHI.SV.W.0173.200722T2323Z-200723T0015Z/

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

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Atlantic County in southern New Jersey...
  Northeastern Cumberland County in southern New Jersey...
  East central Salem County in southern New Jersey...
  Southeastern Camden County in southern New Jersey...
  Southeastern Gloucester County in southern New Jersey...
  Northeastern Cape May County in southern New Jersey...
  Southern Burlington County in southern New Jersey...

* Until 815 PM EDT.

* At 723 PM EDT, severe thunderstorms were located along a line
  extending from Clayton to near Cumberland to near Seaville, 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...
  Vineland, Atlantic City, Millville, Ocean City, Cumberland,
  Pleasantville, Glassboro, Hammonton, Somers Point, Ventnor City,
  Brigantine, Northfield, Absecon, Clayton, Berlin, Tabernacle,
  Shamong, Margate City, Buena and Egg Harbor City.

This includes the following highways...
 Garden State Parkway between mile markers 14 and 49.
 Atlantic City Expressway between mile markers 0 and 41.

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 3927 7422 3921 7430 3912 7477 3938 7499
      3968 7517 3991 7467 3955 7445 3928 7422
TIME...MOT...LOC 2323Z 248DEG 30KT 3965 7507 3941 7492 3921 7476 

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

MPS

3 follow-up statements

823 
WWUS51 KPHI 222338
SVSPHI

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

NJC033-222347-
/O.CAN.KPHI.SV.W.0173.000000T0000Z-200723T0015Z/
Salem NJ-
738 PM EDT Wed Jul 22 2020

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SALEM 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 1000 PM EDT for
southern New Jersey.

LAT...LON 3925 7472 3945 7492 3966 7507 3985 7481
      3991 7467 3954 7445 3941 7434
TIME...MOT...LOC 2337Z 233DEG 32KT 3964 7496 3949 7486 3935 7471 

$$

NJC001-005-007-009-011-015-230015-
/O.CON.KPHI.SV.W.0173.000000T0000Z-200723T0015Z/
Atlantic NJ-Cumberland NJ-Camden NJ-Gloucester NJ-Cape May NJ-
Burlington NJ-
738 PM EDT Wed Jul 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR ATLANTIC...EAST CENTRAL CUMBERLAND...SOUTHEASTERN CAMDEN...
SOUTHEASTERN GLOUCESTER...NORTHEASTERN CAPE MAY AND SOUTHEASTERN
BURLINGTON COUNTIES...

At 737 PM EDT, severe thunderstorms were located along a line
extending from Victory Lakes to Mizpah to near English Creek, moving
northeast 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...
Vineland, Atlantic City, Ocean City, Pleasantville, Hammonton, Somers
Point, Ventnor City, Brigantine, Northfield, Absecon, Clayton,
Tabernacle, Shamong, Margate City, Buena, Egg Harbor City, Weymouth,
Estell Manor, Chesilhurst and Port Republic.

This includes the following highways...
 Garden State Parkway between mile markers 28 and 49.
 Atlantic City Expressway between mile markers 1 and 39.

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 3925 7472 3945 7492 3966 7507 3985 7481
      3991 7467 3954 7445 3941 7434
TIME...MOT...LOC 2337Z 233DEG 32KT 3964 7496 3949 7486 3935 7471 

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

MPS

591 
WWUS51 KPHI 222354
SVSPHI

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

NJC009-011-015-230004-
/O.CAN.KPHI.SV.W.0173.000000T0000Z-200723T0015Z/
Cumberland NJ-Gloucester NJ-Cape May NJ-
754 PM EDT Wed Jul 22 2020

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CUMBERLAND...
SOUTHEASTERN GLOUCESTER AND NORTHEASTERN CAPE MAY 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 3932 7456 3951 7476 3976 7490 3989 7466
      3953 7445 3941 7434
TIME...MOT...LOC 2354Z 246DEG 24KT 3972 7480 3954 7469 3938 7451 

$$

NJC001-005-007-230015-
/O.CON.KPHI.SV.W.0173.000000T0000Z-200723T0015Z/
Atlantic NJ-Camden NJ-Burlington NJ-
754 PM EDT Wed Jul 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR CENTRAL ATLANTIC...SOUTHEASTERN CAMDEN AND SOUTHEASTERN
BURLINGTON COUNTIES...

At 754 PM EDT, severe thunderstorms were located along a line
extending from near Atsion to near Elwood-Magnolia to Pleasantville,
moving northeast at 25 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, Pleasantville, Hammonton, Ventnor City, Brigantine,
Northfield, Absecon, Tabernacle, Shamong, Margate City, Egg Harbor
City, Chesilhurst, Port Republic, Wharton State Forest, Pomona,
Elwood-Magnolia, Atsion, Wading River, Batsto and Linwood.

This includes the following highways...
 Garden State Parkway between mile markers 33 and 48.
 Atlantic City Expressway between mile markers 1 and 26.

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 3932 7456 3951 7476 3976 7490 3989 7466
      3953 7445 3941 7434
TIME...MOT...LOC 2354Z 246DEG 24KT 3972 7480 3954 7469 3938 7451 

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

MPS

319 
WWUS51 KPHI 230006
SVSPHI

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

NJC001-005-007-230015-
/O.EXP.KPHI.SV.W.0173.000000T0000Z-200723T0015Z/
Atlantic NJ-Camden NJ-Burlington NJ-
806 PM EDT Wed Jul 22 2020

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ATLANTIC...
SOUTHEASTERN CAMDEN AND SOUTHEASTERN BURLINGTON COUNTIES WILL EXPIRE
AT 815 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with these thunderstorms.

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.

Remember, a new Severe Thunderstorm Warning is in effect for 
portions of Atlantic, Camden, and Burlington counties until 8:45 pm.

LAT...LON 3932 7456 3951 7476 3976 7490 3989 7466
      3953 7445 3941 7434
TIME...MOT...LOC 0005Z 248DEG 30KT 3975 7471 3957 7460 3941 7442 

$$

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, 7:58 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Ocean	47 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.