Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 162, NWS Philadelphia/Mount Holly

July 9, 20216 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 9, 2021, 7:43 PM EDT for 6 counties in New Jersey. It was in force for 62 min. 2 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 9, 2021, 7:43 PM EDT (23:43 UTC)
Expired: Jul 9, 2021, 8:45 PM EDT
In force: 62 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Atlantic County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 65 km from the middle of the area, began a volume at 23:43 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 9, 7:45 PM EDT	TSTM WND DMG	1 Sw Washington Twp, NJ	LAW ENFORCEMENT REPORTS TREES DOWN ON ROADWAY IN WASHINGTON TOWNSHIP.
Jul 9, 7:48 PM EDT	TSTM WND DMG	Franklin Twp, NJ	TREE DOWN ON WIRES IN FRANKLIN TOWNSHIP.

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, 11.7 hours before the alert went out and 181 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 712 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

015 
WUUS51 KPHI 092343
SVRPHI
NJC001-007-009-011-015-033-100045-
/O.NEW.KPHI.SV.W.0162.210709T2343Z-210710T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
743 PM EDT Fri Jul 9 2021

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Western Atlantic County in southern New Jersey...
  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...
  Northwestern Cape May County in southern New Jersey...

* Until 845 PM EDT.

* At 743 PM EDT, severe thunderstorms were located along a line
  extending from near Elmer to near Malaga to Fairton, moving east at
  30 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, Millville, Bridgeton, Cumberland, Glassboro, Hammonton,
  Pitman, Clayton, Berlin, Buena, Egg Harbor City, Laurel Lake,
  Weymouth, Woodbine, Estell Manor, Chesilhurst, Newfield, Corbin
  City, Franklinville and Sicklerville.

This includes Atlantic City Expressway between mile markers 12 and
42.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3919 7483 3937 7532 3956 7514 3971 7523
      3979 7490 3979 7483 3963 7466 3943 7462
TIME...MOT...LOC 2343Z 284DEG 25KT 3966 7522 3954 7507 3940 7520 

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

Staarmann

4 follow-up statements

030 
WWUS51 KPHI 100000
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
800 PM EDT Fri Jul 9 2021

NJC033-100010-
/O.CAN.KPHI.SV.W.0162.000000T0000Z-210710T0045Z/
Salem NJ-
800 PM EDT Fri Jul 9 2021

...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.

LAT...LON 3919 7483 3941 7511 3946 7509 3946 7508
      3959 7504 3970 7513 3979 7490 3978 7487
      3979 7483 3963 7466 3943 7462
TIME...MOT...LOC 0000Z 280DEG 27KT 3965 7500 3953 7485 3943 7505 

$$

NJC001-007-009-011-015-100045-
/O.CON.KPHI.SV.W.0162.000000T0000Z-210710T0045Z/
Atlantic NJ-Cumberland NJ-Camden NJ-Gloucester NJ-Cape May NJ-
800 PM EDT Fri Jul 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR WESTERN ATLANTIC...NORTHEASTERN CUMBERLAND...SOUTHEASTERN
CAMDEN...SOUTHEASTERN GLOUCESTER AND NORTHWESTERN CAPE MAY
COUNTIES...

At 800 PM EDT, severe thunderstorms were located along a line
extending from Monroe Township to near Mizpah to South Vineland,
moving east at 30 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, Millville, Cumberland, Glassboro, Hammonton, Clayton,
Berlin, Buena, Egg Harbor City, Weymouth, Woodbine, Estell Manor,
Chesilhurst, Newfield, Corbin City, Sicklerville, Elwood-Magnolia,
Dorothy, Atco and Victory Lakes.

This includes Atlantic City Expressway between mile markers 12 and
41.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3919 7483 3941 7511 3946 7509 3946 7508
      3959 7504 3970 7513 3979 7490 3978 7487
      3979 7483 3963 7466 3943 7462
TIME...MOT...LOC 0000Z 280DEG 27KT 3965 7500 3953 7485 3943 7505 

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

Staarmann

950 
WWUS51 KPHI 100014
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
814 PM EDT Fri Jul 9 2021

NJC001-007-009-011-015-100045-
/O.CON.KPHI.SV.W.0162.000000T0000Z-210710T0045Z/
Atlantic NJ-Cumberland NJ-Camden NJ-Gloucester NJ-Cape May NJ-
814 PM EDT Fri Jul 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR WESTERN ATLANTIC...NORTHEASTERN CUMBERLAND...SOUTHEASTERN
CAMDEN...EAST CENTRAL GLOUCESTER AND NORTHWESTERN CAPE MAY
COUNTIES...

At 814 PM EDT, severe thunderstorms were located along a line
extending from near Hammonton to near Weymouth to near Cumberland,
moving east at 30 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, Millville, Cumberland, Hammonton, Berlin, Buena, Egg Harbor
City, Weymouth, Woodbine, Estell Manor, Chesilhurst, Corbin City,
Atco, Sicklerville, Belleplain Forest, Mays Landing, Elwood-Magnolia,
Dorothy, Mizpah and Port Elizabeth.

This includes Atlantic City Expressway between mile markers 12 and
38.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3919 7483 3939 7509 3958 7491 3971 7500
      3979 7490 3978 7487 3979 7483 3963 7466
      3943 7462
TIME...MOT...LOC 0014Z 283DEG 25KT 3965 7486 3951 7474 3941 7494 

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

Staarmann

225 
WWUS51 KPHI 100027
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
827 PM EDT Fri Jul 9 2021

NJC007-015-100037-
/O.CAN.KPHI.SV.W.0162.000000T0000Z-210710T0045Z/
Camden NJ-Gloucester NJ-
827 PM EDT Fri Jul 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CAMDEN AND EAST
CENTRAL GLOUCESTER COUNTIES IS CANCELLED...

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

LAT...LON 3919 7483 3936 7505 3949 7485 3962 7485
      3965 7468 3962 7466 3943 7462
TIME...MOT...LOC 0027Z 288DEG 26KT 3956 7472 3944 7464 3936 7491 

$$

NJC001-009-011-100045-
/O.CON.KPHI.SV.W.0162.000000T0000Z-210710T0045Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
827 PM EDT Fri Jul 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR WESTERN ATLANTIC...EAST CENTRAL CUMBERLAND AND NORTHWESTERN CAPE
MAY COUNTIES...

At 827 PM EDT, severe thunderstorms were located along a line
extending from Elwood-Magnolia to near Mays Landing to Cumberland,
moving east at 30 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, Millville, Cumberland, Hammonton, Egg Harbor City,
Weymouth, Woodbine, Estell Manor, Corbin City, Belleplain Forest,
Mays Landing, Elwood-Magnolia, Dorothy, Mizpah, Port Elizabeth and
Folsom.

This includes Atlantic City Expressway between mile markers 12 and
28.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3919 7483 3936 7505 3949 7485 3962 7485
      3965 7468 3962 7466 3943 7462
TIME...MOT...LOC 0027Z 288DEG 26KT 3956 7472 3944 7464 3936 7491 

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

Staarmann

300 
WWUS51 KPHI 100039
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
839 PM EDT Fri Jul 9 2021

NJC001-009-011-100045-
/O.CON.KPHI.SV.W.0162.000000T0000Z-210710T0045Z/
Atlantic NJ-Cumberland NJ-Cape May NJ-
839 PM EDT Fri Jul 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR WESTERN ATLANTIC...EAST CENTRAL CUMBERLAND AND NORTHWESTERN CAPE
MAY COUNTIES...

At 839 PM EDT, severe thunderstorms were located along a line
extending from near Egg Harbor City to near Absecon to near
Belleplain Forest, moving east at 30 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...
Hammonton, Egg Harbor City, Woodbine, Estell Manor, Corbin City,
Dorothy, Belleplain Forest, Mays Landing, Elwood-Magnolia and Port
Elizabeth.

This includes Atlantic City Expressway between mile markers 12 and
23.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3919 7483 3932 7500 3950 7473 3963 7479
      3965 7468 3962 7466 3943 7462
TIME...MOT...LOC 0039Z 283DEG 25KT 3954 7462 3942 7454 3929 7484 

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

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 10:25 PM EDT	Areal Flood Advisory	PHI	Cape May, Cumberland	7 hr
Jul 8, 11:02 PM EDT	Special Marine Warning	PHI		88 min
Jul 8, 11:59 PM EDT	Areal Flood Advisory	PHI	Salem	5 hr
Jul 9, 12:07 AM EDT	Special Marine Warning	PHI		53 min
Jul 9, 12:08 AM EDT	Areal Flood Advisory	PHI	Atlantic, Camden, Gloucester	6 hr
Jul 9, 12:25 AM EDT	Special Marine Warning	PHI		95 min
Jul 9, 1:34 AM EDT	Special Marine Warning	PHI		86 min
Jul 9, 1:49 AM EDT	Special Marine Warning	PHI		26 min
Jul 9, 2:05 AM EDT	Areal Flood Advisory	PHI	Burlington, Monmouth, Ocean	8 hr
Jul 9, 2:50 AM EDT	Tornado Warning	PHI	Atlantic, Cape May, Cumberland	25 min
Jul 9, 2:53 AM EDT	Special Marine Warning	PHI		68 min
Jul 9, 3:38 AM EDT	Tornado Warning	PHI	Atlantic, Burlington, Ocean	18 min
Jul 9, 3:51 AM EDT	Special Marine Warning	PHI		84 min
Jul 9, 4:08 AM EDT	Gale Warning	PHI		3 hr
Jul 9, 4:41 AM EDT	Tornado Warning	PHI	Monmouth, Ocean	34 min
Jul 9, 4:44 AM EDT	Areal Flood Advisory	PHI	Mercer, Middlesex	5 hr
Jul 9, 4:54 AM EDT	Areal Flood Advisory	PHI	Morris, Somerset	5 hr
Jul 9, 4:58 AM EDT	Special Marine Warning	PHI		39 min
Jul 9, 5:34 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	2 hr
Jul 9, 6:19 PM EDT	Severe Thunderstorm Warning	PHI	Salem	41 min
Jul 9, 6:24 PM EDT	Special Marine Warning	PHI		66 min
Jul 9, 6:50 PM EDT	Areal Flood Advisory	PHI	Gloucester, Salem	2 hr
Jul 9, 6:57 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	63 min
Jul 9, 7:17 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester	23 min
Jul 9, 7:39 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Sussex, Warren	2 hr
Jul 9, 7:46 PM EDT	Areal Flood Advisory	PHI	Atlantic, Camden, Cumberland, Gloucester, Salem	108 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.