Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 388, NWS Philadelphia/Mount Holly

September 4, 20194 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 4, 2019, 8:03 PM EDT for 4 counties in New Jersey. It was in force for 57 min. 1 report 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: Sep 4, 2019, 8:03 PM EDT (00:03 UTC)
Expired: Sep 4, 2019, 9:00 PM EDT
In force: 57 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ

The radar

The Philadelphia radar (KDIX), 37 km from the middle of the area, began a volume at 00:05 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
Sep 4, 8:53 PM EDT	TSTM WND DMG	2 Sw Chesilhurst, NJ	MANY TREES DOWN WITH SOME INTO HOMES IN THE CEDAR BROOK SECTION OF WINSLOW TOWNSHIP. TIME ESTIMATED FROM RADAR.

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.1 hours before the alert went out and 203 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: 1460 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 925 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 8.8

Open this sounding in Storm Lab

The text

As transmitted.

157 
WUUS51 KPHI 050003
SVRPHI
NJC001-005-007-015-050100-
/O.NEW.KPHI.SV.W.0388.190905T0003Z-190905T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
803 PM EDT Wed Sep 4 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northwestern Atlantic County in southern New Jersey...
  Camden County in southern New Jersey...
  Northeastern Gloucester County in southern New Jersey...
  Southern Burlington County in southern New Jersey...

* Until 900 PM EDT.

* At 803 PM EDT, a severe thunderstorm was located over Voorhees, or
  9 miles southeast of Gloucester City, moving east at 20 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...
  Evesham, Deptford, Voorhees, Lindenwold, Hammonton, Bellmawr,
  Woodbury, Berlin, Tabernacle, Shamong, Magnolia, Westville, Egg
  Harbor City, Woodbury Heights, Chesilhurst, Elwood-Magnolia,
  Atsion, Wharton State Forest, Batsto and Sicklerville.

This includes the following highways...
 Atlantic City Expressway between mile markers 29 and 44.
 Interstate 295 in New Jersey between mile markers 25 and 26, and
between mile markers 28 and 33.
 New Jersey Turnpike near exit 3.

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

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

&&

LAT...LON 3949 7455 3978 7519 3986 7515 3990 7494
      3989 7446 3982 7441
TIME...MOT...LOC 0003Z 286DEG 19KT 3983 7495 

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

Staarmann

2 follow-up statements

365 
WWUS51 KPHI 050022
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
822 PM EDT Wed Sep 4 2019

NJC001-005-007-015-050100-
/O.CON.KPHI.SV.W.0388.000000T0000Z-190905T0100Z/
Atlantic NJ-Camden NJ-Gloucester NJ-Burlington NJ-
822 PM EDT Wed Sep 4 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR NORTHWESTERN ATLANTIC...CAMDEN...NORTHEASTERN GLOUCESTER AND
SOUTHERN BURLINGTON COUNTIES...

At 822 PM EDT, a severe thunderstorm was located over Chesilhurst, or
16 miles southeast of Gloucester City, moving southeast at 20 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...
Evesham, Deptford, Voorhees, Lindenwold, Hammonton, Bellmawr,
Woodbury, Berlin, Tabernacle, Shamong, Magnolia, Westville, Egg
Harbor City, Woodbury Heights, Chesilhurst, Elwood-Magnolia, Atsion,
Wharton State Forest, Batsto and Sicklerville.

This includes the following highways...
 Atlantic City Expressway between mile markers 29 and 44.
 Interstate 295 in New Jersey between mile markers 25 and 26, and
between mile markers 28 and 33.
 New Jersey Turnpike near exit 3.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3949 7455 3978 7519 3986 7515 3990 7494
      3989 7446 3982 7441
TIME...MOT...LOC 0022Z 293DEG 18KT 3973 7491 

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

Staarmann

331 
WWUS51 KPHI 050036
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
836 PM EDT Wed Sep 4 2019

NJC001-005-007-015-050100-
/O.CON.KPHI.SV.W.0388.000000T0000Z-190905T0100Z/
Atlantic NJ-Camden NJ-Gloucester NJ-Burlington NJ-
836 PM EDT Wed Sep 4 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR NORTHWESTERN ATLANTIC...CAMDEN...NORTHEASTERN GLOUCESTER AND
SOUTHERN BURLINGTON COUNTIES...

At 836 PM EDT, a severe thunderstorm was located near Hammonton, or
17 miles northeast of Vineland, moving southeast at 20 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...
Lindenwold, Hammonton, Berlin, Shamong, Egg Harbor City, Woodbury
Heights, Chesilhurst, Sicklerville, Elwood-Magnolia, Atsion, Wading
River, Echelon, Chatsworth, Atco, Wharton State Forest, Batsto,
Marlton Lakes, Penn State Forest, Turnersville and Williamstown.

This includes Atlantic City Expressway between mile markers 29 and
44.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3949 7455 3978 7519 3982 7517 3985 7503
      3982 7441
TIME...MOT...LOC 0036Z 293DEG 19KT 3968 7482 

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

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 4, 8:04 PM EDT	Special Weather Statement	PHI	Ocean	41 min
Sep 4, 8:10 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	23 min
Sep 4, 8:16 PM EDT	Special Marine Warning	PHI		89 min
Sep 4, 8:16 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	59 min
Sep 4, 8:19 PM EDT	Special Weather Statement	PHI	Camden, Gloucester	41 min
Sep 4, 8:20 PM EDT	Special Weather Statement	PHI	Ocean	40 min
Sep 4, 8:33 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Gloucester	83 min
Sep 4, 8:40 PM EDT	Special Marine Warning	PHI		95 min
Sep 4, 8:54 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean	81 min
Sep 4, 9:01 PM EDT	Special Marine Warning	PHI		105 min
Sep 4, 9:14 PM EDT	Special Weather Statement	PHI	Cape May, Cumberland	46 min
Sep 4, 9:56 PM EDT	Special Weather Statement	PHI	Cumberland	49 min
Sep 4, 10:12 PM EDT	Special Marine Warning	PHI		63 min
Sep 5, 3:32 AM EDT	Small Craft Advisory	PHI		67 hr
Sep 5, 3:44 AM EDT	Rip Current Statement	PHI	Atlantic, Cape May, Monmouth, Ocean	41 hr
Sep 5, 3:20 PM EDT	Tropical Storm Warning	PHI		29 hr
Sep 5, 3:22 PM EDT	High Surf Advisory	PHI	Atlantic, Cape May, Monmouth, Ocean	42 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.