Alert archive / New Jersey / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 91, NWS Philadelphia/Mount Holly

June 30, 2024New Castle County, Delaware; 4 counties in New Jersey; Delaware County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 30, 2024, 5:51 PM EDT for New Castle County, Delaware; 4 counties in New Jersey; Delaware County, Philadelphia County, Pennsylvania. It was in force for 39 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: Jun 30, 2024, 5:51 PM EDT (21:51 UTC)
Expired: Jun 30, 2024, 6:30 PM EDT
In force: 39 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties New Castle County, DE, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 96 km from the middle of the area, began a volume at 21:54 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
Jun 30, 6:08 PM EDT	TSTM WND DMG	1 S Mullica Hill, NJ	Pictures shared on social media showed trees down in the vicinity of Commissioners Road and Bridgeton Pike in Mullica Hill. One tree took down wires and a pole. Some road closures. Time estimated from radar.
Jun 30, 6:15 PM EDT	TSTM WND DMG	1 S Mullica Hill, NJ	Report from mPING: Trees uprooted.
Jun 30, 6:30 PM EDT	TSTM WND GST 49	Logan Twp, NJ	NJWXNET Station Logan Twp.

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
Jun 30, 11:09 AM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.9 hours before the alert went out and 186 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: 958 J/kg
Mixed-layer CIN: -163 J/kg
Mixed-layer LCL: 1517 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 20 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

769 
WUUS51 KPHI 302151
SVRPHI
DEC003-NJC005-007-015-033-PAC045-101-302230-
/O.NEW.KPHI.SV.W.0091.240630T2151Z-240630T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
551 PM EDT Sun Jun 30 2024

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northern New Castle County in northern Delaware...
  Northwestern Salem County in southern New Jersey...
  Northwestern Camden County in southern New Jersey...
  Northwestern Gloucester County in southern New Jersey...
  West central Burlington County in southern New Jersey...
  Southwestern Philadelphia County in southeastern Pennsylvania...
  Southeastern Delaware County in southeastern Pennsylvania...

* Until 630 PM EDT.

* At 551 PM EDT, severe thunderstorms were located along a line
  extending from Camden to Kemblesville, moving east 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...
  Philadelphia, Camden, Wilmington, Newark, Gloucester City, Cherry
  Hill, Evesham, Mount Laurel, Chester, Deptford, Voorhees, Medford,
  West Deptford, Lindenwold, Pennsville, Bellmawr, Yeadon, Woodbury,
  Carneys Point, and Folcroft.

This includes the following highways...
 New Jersey Turnpike between exits 1 and 4.
 Interstate 95 in Pennsylvania between mile markers 0 and 21.
 Interstate 95 in Delaware between mile markers 7 and 23.
 Interstate 76 in Pennsylvania between mile markers 346 and 351.
 Interstate 76 in New Jersey between mile markers 0 and 3.
 Interstate 295 in New Jersey between mile markers 0 and 38.
 Interstate 676 in New Jersey between mile markers 0 and 4.
 Interstate 476 in Pennsylvania between mile markers 0 and 1.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3973 7577 3979 7572 3996 7511 3992 7469
      3964 7547 3969 7579 3972 7579
TIME...MOT...LOC 2151Z 276DEG 20KT 3993 7512 3974 7579 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hoeflich

2 follow-up statements

083 
WWUS51 KPHI 302217
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
617 PM EDT Sun Jun 30 2024

PAC045-101-302226-
/O.CAN.KPHI.SV.W.0091.000000T0000Z-240630T2230Z/
Philadelphia PA-Delaware PA-
617 PM EDT Sun Jun 30 2024

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN PHILADELPHIA AND
SOUTHEASTERN DELAWARE 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 700 PM EDT for
northern Delaware...southern New Jersey...and southeastern
Pennsylvania.

LAT...LON 3983 7552 3983 7548 3980 7541 3985 7534
      3989 7478 3964 7547 3965 7551 3975 7566
TIME...MOT...LOC 2216Z 276DEG 32KT 3987 7489 3976 7550 

$$

DEC003-NJC005-007-015-033-302230-
/O.CON.KPHI.SV.W.0091.000000T0000Z-240630T2230Z/
New Castle DE-Salem NJ-Camden NJ-Gloucester NJ-Burlington NJ-
617 PM EDT Sun Jun 30 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR NORTHEASTERN NEW CASTLE...NORTHWESTERN SALEM...WEST CENTRAL
CAMDEN...NORTHWESTERN GLOUCESTER AND WEST CENTRAL BURLINGTON
COUNTIES...

At 616 PM EDT, severe thunderstorms were located along a line
extending from Evesham to near Wilmington, moving east at 35 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...
Wilmington, Evesham, Deptford, Voorhees, West Deptford, Lindenwold,
Pennsville, Bellmawr, Woodbury, Carneys Point, Elsmere, Paulsboro,
New Castle, Penns Grove, Magnolia, Westville, Woodbury Heights,
National Park, Swedesboro, and Newport.

This includes the following highways...
 New Jersey Turnpike between exits 1 and 3.
 Interstate 95 in Delaware between mile markers 11 and 23.
 Interstate 295 in New Jersey between mile markers 0 and 26, and near
mile marker 31.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3983 7552 3983 7548 3980 7541 3985 7534
      3989 7478 3964 7547 3965 7551 3975 7566
TIME...MOT...LOC 2216Z 276DEG 32KT 3987 7489 3976 7550 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hoeflich

817 
WWUS51 KPHI 302221 RRA
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
621 PM EDT Sun Jun 30 2024

DEC003-NJC005-007-015-033-302230-
/O.EXP.KPHI.SV.W.0091.000000T0000Z-240630T2230Z/
New Castle DE-Salem NJ-Camden NJ-Gloucester NJ-Burlington NJ-
621 PM EDT Sun Jun 30 2024

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NEW CASTLE...
NORTHWESTERN SALEM...WEST CENTRAL CAMDEN...NORTHWESTERN GLOUCESTER
AND WEST CENTRAL BURLINGTON COUNTIES WILL EXPIRE AT 630 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 are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
northern Delaware...southern New Jersey...and southeastern
Pennsylvania.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.

A Severe Thunderstorm Warning remains in effect for portions of 
Salem, Gloucester, Camden, and Burlington County. Refer to that 
bulletin for the updated information. 

LAT...LON 3983 7552 3983 7548 3980 7541 3985 7534
      3989 7478 3964 7547 3965 7551 3975 7566
TIME...MOT...LOC 2220Z 276DEG 20KT 3987 7487 3976 7548 

$$

Hoeflich

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 5:20 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	40 min
Jun 30, 6:08 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	52 min
Jun 30, 7:00 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	45 min
Jun 30, 7:31 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	44 min
Jun 30, 7:23 AM EDT	Flash Flood Warning	PHI	Atlantic, Cape May, Cumberland	4 hr
Jun 30, 8:00 AM EDT	Special Marine Warning	PHI		49 min
Jun 30, 1:57 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	48 min
Jun 30, 2:10 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	50 min
Jun 30, 2:42 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	63 min
Jun 30, 3:16 PM EDT	Small Craft Advisory	PHI		21 hr
Jun 30, 3:26 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset, Warren	49 min
Jun 30, 4:10 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset	35 min
Jun 30, 4:25 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	50 min
Jun 30, 4:37 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer	53 min
Jun 30, 4:44 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset	31 min
Jun 30, 4:53 PM EDT	Flash Flood Warning	PHI	Hunterdon, Middlesex, Morris, Somerset	3 hr
Jun 30, 5:09 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	51 min
Jun 30, 5:11 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Somerset	49 min
Jun 30, 5:20 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	25 min
Jun 30, 5:26 PM EDT	Special Marine Warning	PHI		34 min
Jun 30, 5:54 PM EDT	Flash Flood Warning	PHI	Burlington, Camden, Gloucester	3 hr
Jun 30, 5:55 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth, Somerset	50 min
Jun 30, 6:06 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem	39 min
Jun 30, 6:17 PM EDT	Special Marine Warning	PHI		58 min
Jun 30, 6:26 PM EDT	Special Marine Warning	PHI		64 min
Jun 30, 6:35 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	40 min
Jun 30, 6:40 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Ocean	65 min
Jun 30, 6:42 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	48 min
Jun 30, 6:44 PM EDT	Special Marine Warning	PHI		2 hr
Jun 30, 6:49 PM EDT	Special Marine Warning	PHI		83 min
Jun 30, 7:34 PM EDT	Special Marine Warning	PHI		27 min
Jun 30, 7:37 PM EDT	Special Marine Warning	PHI		53 min
Jun 30, 7:43 PM EDT	Severe Thunderstorm Warning	PHI	Cape May, Cumberland	24 min
Jun 30, 7:56 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Cumberland, Gloucester, Salem	49 min
Jun 29, 8:22 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery	53 min
Jun 29, 10:23 PM EDT	Flash Flood Warning	PHI	Chester	4 hr
Jun 30, 1:18 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	42 min
Jun 30, 2:45 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	45 min
Jun 30, 3:01 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	59 min
Jun 30, 3:46 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery	44 min
Jun 30, 3:52 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery	38 min
Jun 30, 4:54 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	51 min
Jun 30, 5:19 PM EDT	Flash Flood Warning	PHI	Chester, Delaware, Philadelphia	3 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2024 Severe Thunderstorm Warnings in Pennsylvania, 2024 Severe Thunderstorm Warnings in Delaware, 2024 Every severe thunderstorm warning in 2024

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.