Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 344, NWS Philadelphia/Mount Holly

August 7, 20198 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 7, 2019, 6:21 PM EDT for 8 counties in New Jersey. It was in force for 69 min. 3 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: Aug 7, 2019, 6:21 PM EDT (22:21 UTC)
Expired: Aug 7, 2019, 7:30 PM EDT
In force: 69 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, Ocean County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 64 km from the middle of the area, began a volume at 22:23 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
Aug 7, 6:30 PM EDT	TSTM WND DMG	1 Ne Fairton, NJ	MULTIPLE REPORTS OF WIRES DOWN.
Aug 7, 6:40 PM EDT	TORNADO	1 S Millville, NJ	A WEAK TORNADO BRIEFLY TOUCHED DOWN IN MILLVILLE, IN A FIELD OF SOLAR PANELS ADJACENT TO THE MILLVILLE CITY SEWER DEPARTMENT FACILITY. IT CONTINUED INTO A WOODED AREA, SNAPPING AT LEAST ONE TREE AND DAMAGING A COUPLE OTHERS, BUT LIFTING SOON AFTER. A TWISTING
Aug 7, 7:00 PM EDT	TSTM WND DMG	1 W Dennisville, NJ	WIRES DOWN WITH A TRANSFORMER FIRE DUE TO THUNDERSTORM WIND. CREWS RESPONDED.

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
Aug 7, 2:10 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.4 hours before the alert went out and 176 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: 1339 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 1118 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

611 
WUUS51 KPHI 072221
SVRPHI
NJC001-005-007-009-011-015-029-033-072330-
/O.NEW.KPHI.SV.W.0344.190807T2221Z-190807T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
621 PM EDT Wed Aug 7 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Atlantic County in southern New Jersey...
  Cumberland County in southern New Jersey...
  Central Salem County in southern New Jersey...
  Southeastern Ocean County in southern New Jersey...
  Southeastern Camden County in southern New Jersey...
  Southeastern Gloucester County in southern New Jersey...
  Cape May County in southern New Jersey...
  Southeastern Burlington County in southern New Jersey...

* Until 730 PM EDT.

* At 621 PM EDT, severe thunderstorms were located along a line
  extending from Evesham to near Seabrook Farms to 9 miles northeast
  of Big Stone Beach, 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...
  Vineland, Atlantic City, Millville, Bridgeton, Ocean City, Cape
  May, Cumberland, Barnegat, Pleasantville, Glassboro, Hammonton,
  Somers Point, Brigantine, Pitman, Northfield, Absecon, Clayton,
  Buena, Egg Harbor City and Laurel Lake.

This includes the following highways...
 Atlantic City Expressway between mile markers 2 and 42.
 Garden State Parkway between mile markers 0 and 29, and between mile
markers 32 and 69.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 these storms. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.

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

&&

LAT...LON 3952 7430 3954 7440 3956 7441 3941 7440
      3949 7431 3948 7431 3947 7430 3939 7437
      3933 7468 3929 7455 3893 7489 3893 7497
      3917 7490 3918 7515 3940 7545 3954 7547
      3976 7518 3978 7410
TIME...MOT...LOC 2221Z 241DEG 22KT 3987 7489 3952 7528 3909 7520 

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

Staarmann

2 follow-up statements

759 
WWUS51 KPHI 072252
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
652 PM EDT Wed Aug 7 2019

NJC001-005-007-009-011-015-029-033-072330-
/O.CON.KPHI.SV.W.0344.000000T0000Z-190807T2330Z/
Atlantic NJ-Cumberland NJ-Salem NJ-Ocean NJ-Camden NJ-Gloucester NJ-
Cape May NJ-Burlington NJ-
652 PM EDT Wed Aug 7 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR ATLANTIC...EASTERN CUMBERLAND...EAST CENTRAL SALEM...SOUTHEASTERN
OCEAN...SOUTHEASTERN CAMDEN...SOUTHEASTERN GLOUCESTER...CAPE MAY AND
SOUTHEASTERN BURLINGTON COUNTIES...

At 652 PM EDT, severe thunderstorms were located along a line
extending from Pemberton to Franklinville to Woodbine, moving
northeast 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, Millville, Ocean City, Cape May, Cumberland,
Barnegat, Pleasantville, Glassboro, Hammonton, Somers Point,
Brigantine, Pitman, Northfield, Absecon, Clayton, Buena, Egg Harbor
City, Laurel Lake and Tuckerton.

This includes the following highways...
 Atlantic City Expressway between mile markers 2 and 42.
 Garden State Parkway between mile markers 0 and 29, and between mile
markers 32 and 69.

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 3952 7430 3954 7440 3956 7441 3941 7440
      3949 7431 3948 7431 3947 7430 3939 7437
      3933 7468 3929 7455 3893 7489 3893 7497
      3917 7490 3918 7511 3935 7508 3965 7522
      3976 7518 3978 7410
TIME...MOT...LOC 2252Z 240DEG 22KT 3996 7468 3961 7507 3924 7483 

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

Staarmann

236 
WWUS51 KPHI 072318
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
718 PM EDT Wed Aug 7 2019

NJC011-015-033-072328-
/O.CAN.KPHI.SV.W.0344.000000T0000Z-190807T2330Z/
Cumberland NJ-Salem NJ-Gloucester NJ-
718 PM EDT Wed Aug 7 2019

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CUMBERLAND...EAST
CENTRAL SALEM AND SOUTHEASTERN GLOUCESTER 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 900 PM EDT for
southern New Jersey.

LAT...LON 3966 7420 3958 7434 3957 7428 3952 7430
      3954 7440 3956 7441 3941 7440 3949 7431
      3948 7431 3947 7430 3942 7434 3933 7468
      3927 7459 3929 7455 3894 7487 3893 7497
      3940 7481 3976 7496 3978 7410
TIME...MOT...LOC 2318Z 253DEG 27KT 3979 7476 3961 7472 3924 7449 

$$

NJC001-005-007-009-029-072330-
/O.CON.KPHI.SV.W.0344.000000T0000Z-190807T2330Z/
Atlantic NJ-Ocean NJ-Camden NJ-Cape May NJ-Burlington NJ-
718 PM EDT Wed Aug 7 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR ATLANTIC...SOUTHEASTERN OCEAN...SOUTHEASTERN CAMDEN...CAPE MAY
AND SOUTHEASTERN BURLINGTON COUNTIES...

At 718 PM EDT, severe thunderstorms with a history of producing wind 
damage in Cumberland County were located along a line extending from 
near Shamong to near Elwood-Magnolia to near Longport, 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...
Atlantic City, Ocean City, Cape May, Barnegat, Pleasantville,
Hammonton, Brigantine, Northfield, Absecon, Egg Harbor City, North
Wildwood, Tuckerton, Wildwood Crest, Weymouth, Woodbine, Sea Isle
City, Estell Manor, Chesilhurst, Avalon and Port Republic.

This includes the following highways...
 Atlantic City Expressway between mile markers 3 and 35.
 Garden State Parkway between mile markers 0 and 27, and between mile
markers 33 and 69.

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 3966 7420 3958 7434 3957 7428 3952 7430
      3954 7440 3956 7441 3941 7440 3949 7431
      3948 7431 3947 7430 3942 7434 3933 7468
      3927 7459 3929 7455 3894 7487 3893 7497
      3940 7481 3976 7496 3978 7410
TIME...MOT...LOC 2318Z 253DEG 27KT 3979 7476 3961 7472 3924 7449 

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
Aug 6, 8:05 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Warren	55 min
Aug 7, 10:02 AM EDT	Flash Flood Watch	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 5 more	11 hr
Aug 7, 12:55 PM EDT	Special Weather Statement	PHI	Hunterdon	35 min
Aug 7, 1:02 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset, Warren	4 hr
Aug 7, 1:12 PM EDT	Special Weather Statement	PHI	Monmouth	33 min
Aug 7, 1:22 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset, Warren	38 min
Aug 7, 1:26 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer	49 min
Aug 7, 1:33 PM EDT	Special Marine Warning	PHI		42 min
Aug 7, 1:38 PM EDT	Severe Thunderstorm Warning	PHI	Cape May	52 min
Aug 7, 1:40 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Somerset	50 min
Aug 7, 1:44 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	46 min
Aug 7, 1:46 PM EDT	Flash Flood Warning	PHI	Hunterdon, Morris	4 hr
Aug 7, 1:50 PM EDT	Special Marine Warning	PHI		55 min
Aug 7, 1:52 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset	55 min
Aug 7, 2:01 PM EDT	Areal Flood Advisory	PHI	Burlington, Mercer, Middlesex, Somerset	97 min
Aug 7, 2:03 PM EDT	Special Marine Warning	PHI		34 min
Aug 7, 2:07 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth	38 min
Aug 7, 2:16 PM EDT	Special Weather Statement	PHI	Cape May	29 min
Aug 7, 2:18 PM EDT	Areal Flood Advisory	PHI	Morris, Somerset	3 hr
Aug 7, 2:21 PM EDT	Special Marine Warning	PHI		23 min
Aug 7, 2:23 PM EDT	Severe Thunderstorm Warning	PHI	Cape May	19 min
Aug 7, 2:27 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	32 min
Aug 7, 2:30 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	45 min
Aug 7, 2:57 PM EDT	Areal Flood Advisory	PHI	Middlesex, Monmouth, Somerset	3 hr
Aug 7, 3:05 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden	40 min
Aug 7, 3:07 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	53 min
Aug 7, 3:18 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon	42 min
Aug 7, 3:24 PM EDT	Severe Thunderstorm Warning	PHI	Warren	51 min
Aug 7, 3:38 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Ocean	67 min
Aug 7, 3:42 PM EDT	Special Weather Statement	PHI	Middlesex	33 min
Aug 7, 3:49 PM EDT	Areal Flood Advisory	PHI	Middlesex, Monmouth	3 hr
Aug 7, 3:54 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Warren	51 min
Aug 7, 3:59 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	46 min
Aug 7, 4:03 PM EDT	Flash Flood Warning	PHI	Middlesex, Monmouth	4 hr
Aug 7, 4:03 PM EDT	Special Weather Statement	PHI	Mercer	42 min
Aug 7, 4:06 PM EDT	Areal Flood Advisory	PHI	Mercer, Middlesex, Somerset	4 hr
Aug 7, 4:09 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Mercer, Middlesex, Somerset	66 min
Aug 7, 4:14 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	46 min
Aug 7, 4:20 PM EDT	Flash Flood Warning	PHI	Mercer	4 hr
Aug 7, 4:27 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	63 min
Aug 7, 4:34 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth	41 min
Aug 7, 4:39 PM EDT	Flash Flood Warning	PHI	Mercer, Middlesex, Somerset	6 hr
Aug 7, 5:02 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth, Morris, Somerset	22 min
Aug 7, 5:03 PM EDT	Special Marine Warning	PHI		42 min
Aug 7, 5:16 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Mercer, Salem	59 min
Aug 7, 5:34 PM EDT	Special Marine Warning	PHI		56 min
Aug 7, 5:39 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Cumberland, Gloucester, Salem	51 min
Aug 7, 5:41 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	49 min
Aug 7, 5:57 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 1 more	78 min
Aug 7, 6:01 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Cumberland, Gloucester, Mercer, Middlesex and 3 more	3 hr
Aug 7, 6:27 PM EDT	Special Marine Warning	PHI		63 min
Aug 7, 6:56 PM EDT	Special Marine Warning	PHI		2 hr
Aug 7, 7:09 PM EDT	Special Marine Warning	PHI		2 hr
Aug 7, 7:15 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Monmouth, Ocean	75 min
Aug 7, 7:42 PM EDT	Areal Flood Warning	PHI	Mercer	3 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2019 Every severe thunderstorm warning in 2019

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.