Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 71, NWS Philadelphia/Mount Holly

June 16, 2023Camden County, Gloucester County, Salem County, New Jersey; Delaware County, Philadelphia County, Pennsylvania; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 16, 2023, 11:46 AM EDT for Camden County, Gloucester County, Salem County, New Jersey; Delaware County, Philadelphia County, Pennsylvania; New Castle County, Delaware. It was in force for 59 min. 8 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 16, 2023, 11:46 AM EDT (15:46 UTC)
Expired: Jun 16, 2023, 12:45 PM EDT
In force: 59 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

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

The radar

The Philadelphia radar (KDIX), 92 km from the middle of the area, began a volume at 15:48 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 16, 11:50 AM EDT	HAIL 1	Newport, DE
Jun 16, 11:50 AM EDT	HAIL 1	Newport, DE
Jun 16, 11:56 AM EDT	HAIL 1	1 Sse Simonds Gardens, DE	Trained spotter relayed report of quarter sized hail near the Delaware Memorial Bridge on the Delaware side. Time estimated from radar.
Jun 16, 11:56 AM EDT	HAIL 1	1 Sse Simonds Gardens, DE	Trained spotter relayed report of quarter sized hail near the Delaware Memorial Bridge on the Delaware side. Time estimated from radar.
Jun 16, 12:05 PM EDT	HAIL 1	Pennsville, NJ
Jun 16, 12:05 PM EDT	HAIL 1	Pennsville, NJ
Jun 16, 12:18 PM EDT	TSTM WND DMG	1 N Paulsboro, NJ	Report from mPING: 1-inch tree limbs broken. Time estimated from radar.
Jun 16, 12:18 PM EDT	TSTM WND DMG	1 N Paulsboro, NJ	Report from mPING: 1-inch tree limbs broken. 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
Jun 16, 11:06 AM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 3.8 hours before the alert went out and 188 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: 119 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 910 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

507 
WUUS51 KPHI 161546
SVRPHI
DEC003-NJC007-015-033-PAC045-101-161645-
/O.NEW.KPHI.SV.W.0071.230616T1546Z-230616T1645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1146 AM EDT Fri Jun 16 2023

The National Weather Service in Mount Holly NJ has issued a

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

* Until 1245 PM EDT.

* At 1146 AM EDT, severe thunderstorms were located along a line
  extending from Greenville to near Bear, 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...
  Philadelphia, Camden, Wilmington, Gloucester City, Chester,
  Deptford, West Deptford, Glassboro, Pennsville, Bellmawr, Woodbury,
  Pitman, Clayton, Carneys Point, Folcroft, Elsmere, Paulsboro, New
  Castle, Penns Grove and Salem.

This includes the following highways...
 New Jersey Turnpike between exits 1 and 3.
 Interstate 95 in Pennsylvania between mile markers 0 and 20.
 Interstate 95 in Delaware between mile markers 4 and 23.
 Interstate 76 in Pennsylvania between mile markers 348 and 351.
 Interstate 76 in New Jersey between mile markers 0 and 3.
 Interstate 295 in New Jersey between mile markers 0 and 29.
 Interstate 676 in New Jersey between mile markers 0 and 3.
 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 3981 7569 3996 7504 3957 7510 3949 7575
TIME...MOT...LOC 1546Z 249DEG 27KT 3978 7562 3959 7566 

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

$$

Staarmann

2 follow-up statements

018 
WWUS51 KPHI 161609
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1209 PM EDT Fri Jun 16 2023

DEC003-NJC007-015-033-PAC045-101-161645-
/O.CON.KPHI.SV.W.0071.000000T0000Z-230616T1645Z/
New Castle DE-Salem NJ-Camden NJ-Gloucester NJ-Philadelphia PA-
Delaware PA-
1209 PM EDT Fri Jun 16 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM EDT
FOR NORTHEASTERN NEW CASTLE...SALEM...NORTHWESTERN CAMDEN...
GLOUCESTER...SOUTHWESTERN PHILADELPHIA AND SOUTHEASTERN DELAWARE
COUNTIES...

At 1209 PM EDT, severe thunderstorms were located along a line
extending from Chester to near Beckett to Quinton, 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...
Philadelphia, Camden, Wilmington, Gloucester City, Chester, Deptford,
West Deptford, Glassboro, Pennsville, Bellmawr, Woodbury, Pitman,
Clayton, Carneys Point, Folcroft, Paulsboro, Penns Grove, Salem,
Westville and Woodstown.

This includes the following highways...
 New Jersey Turnpike between exits 1 and 3.
 Interstate 95 in Pennsylvania between mile markers 0 and 20.
 Interstate 95 in Delaware between mile markers 20 and 23.
 Interstate 76 in Pennsylvania between mile markers 348 and 351.
 Interstate 76 in New Jersey between mile markers 0 and 3.
 Interstate 295 in New Jersey between mile markers 0 and 29.
 Interstate 676 in New Jersey between mile markers 0 and 3.
 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 3986 7548 3996 7504 3957 7510 3952 7555
TIME...MOT...LOC 1609Z 252DEG 29KT 3983 7534 3970 7535 3956 7543 

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

$$

Staarmann

030 
WWUS51 KPHI 161632
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1232 PM EDT Fri Jun 16 2023

DEC003-161641-
/O.CAN.KPHI.SV.W.0071.000000T0000Z-230616T1645Z/
New Castle DE-
1232 PM EDT Fri Jun 16 2023

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NEW CASTLE 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 600 PM EDT for
southern New Jersey...and southeastern Pennsylvania.

LAT...LON 3955 7528 3955 7531 3972 7533 3990 7529
      3996 7504 3957 7510
TIME...MOT...LOC 1631Z 251DEG 31KT 3989 7504 3976 7505 3959 7518 

$$

NJC007-015-033-PAC045-101-161645-
/O.CON.KPHI.SV.W.0071.000000T0000Z-230616T1645Z/
Salem NJ-Camden NJ-Gloucester NJ-Philadelphia PA-Delaware PA-
1232 PM EDT Fri Jun 16 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM EDT
FOR EAST CENTRAL SALEM...NORTHWESTERN CAMDEN...CENTRAL GLOUCESTER...
SOUTHWESTERN PHILADELPHIA AND SOUTHEASTERN DELAWARE COUNTIES...

At 1231 PM EDT, severe thunderstorms were located along a line
extending from Ashland to Turnersville to Elmer, moving east at 35 
mph. This storm has a history of producing quarter sized hail in 
northern Delaware.

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, Gloucester City, Deptford, West Deptford,
Glassboro, Bellmawr, Woodbury, Pitman, Clayton, Folcroft, Paulsboro,
Westville, Woodstown, Woodbury Heights, National Park, Swedesboro,
Brooklawn, Elmer and Audubon Park.

This includes the following highways...
 New Jersey Turnpike between exits 2 and 3.
 Interstate 95 in Pennsylvania between mile markers 10 and 19.
 Interstate 76 in Pennsylvania between mile markers 348 and 351.
 Interstate 76 in New Jersey between mile markers 0 and 3.
 Interstate 295 in New Jersey between mile markers 15 and 29.
 Interstate 676 in New Jersey between mile markers 0 and 3.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3955 7528 3955 7531 3972 7533 3990 7529
      3996 7504 3957 7510
TIME...MOT...LOC 1631Z 251DEG 31KT 3989 7504 3976 7505 3959 7518 

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

$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 10:39 AM EDT	Special Weather Statement	PHI	Cape May	36 min
Jun 16, 11:01 AM EDT	Special Marine Warning	PHI		44 min
Jun 16, 11:04 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May	41 min
Jun 16, 11:20 AM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	40 min
Jun 16, 11:43 AM EDT	Special Marine Warning	PHI		62 min
Jun 16, 11:54 AM EDT	Special Marine Warning	PHI		66 min
Jun 16, 11:58 AM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Hunterdon, Mercer	47 min
Jun 16, 12:25 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more	65 min
Jun 16, 12:30 PM EDT	Special Marine Warning	PHI		90 min
Jun 16, 12:41 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	49 min
Jun 16, 12:46 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Mercer, Salem	3 hr
Jun 16, 12:55 PM EDT	Tornado Warning	PHI	Burlington, Ocean	35 min
Jun 16, 1:13 PM EDT	Special Marine Warning	PHI		2 hr
Jun 16, 1:15 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Cape May, Cumberland, Mercer, Middlesex and 2 more	60 min
Jun 16, 1:29 PM EDT	Special Marine Warning	PHI		2 hr
Jun 16, 2:53 PM EDT	Special Marine Warning	PHI		67 min
Jun 16, 3:54 PM EDT	Special Marine Warning	PHI		66 min
Jun 16, 5:07 PM EDT	Special Marine Warning	PHI		53 min
Jun 16, 6:01 PM EDT	Special Marine Warning	PHI		59 min
Jun 16, 10:26 AM EDT	Special Weather Statement	PHI	Chester	34 min
Jun 16, 10:48 AM EDT	Severe Thunderstorm Warning	PHI	Chester	42 min
Jun 16, 11:02 AM EDT	Special Weather Statement	PHI	Delaware	28 min
Jun 16, 11:10 AM EDT	Tornado Warning	PHI	Berks, Chester	35 min
Jun 16, 11:33 AM EDT	Tornado Warning	PHI	Chester, Delaware, Montgomery	27 min
Jun 16, 12:49 PM EDT	Flash Flood Warning	PHI	Bucks, Philadelphia	3 hr
Jun 16, 11:29 AM EDT	Special Weather Statement	PHI	New Castle	31 min
Jun 16, 11:40 AM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	50 min
Jun 16, 12:28 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	47 min
Jun 16, 4:05 PM EDT	Special Weather Statement	PHI	Sussex	25 min
Jun 16, 4:29 PM EDT	Special Weather Statement	PHI	Sussex	46 min
Jun 16, 5:27 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	48 min
Jun 16, 5:45 PM EDT	Areal Flood Advisory	PHI	Sussex	2 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2023 Severe Thunderstorm Warnings in Pennsylvania, 2023 Severe Thunderstorm Warnings in Delaware, 2023 Every severe thunderstorm warning in 2023

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.