Alert archive / New Jersey / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 115, NWS Philadelphia/Mount Holly

June 30, 2025Salem County, New Jersey; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 30, 2025, 9:41 PM EDT for Salem County, New Jersey; New Castle County, Delaware. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 30, 2025, 9:41 PM EDT (01:41 UTC)
Expired: Jun 30, 2025, 10:45 PM EDT
In force: 64 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties New Castle County, DE, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 90 km from the middle of the area, began a volume at 01:40 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.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 1.7 hours before the alert went out and 182 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: 2011 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1318 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

As transmitted.

083 
WUUS51 KPHI 010141
SVRPHI
DEC003-NJC033-010245-
/O.NEW.KPHI.SV.W.0115.250701T0141Z-250701T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
941 PM EDT Mon Jun 30 2025

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...

* Until 1045 PM EDT.

* At 940 PM EDT, a severe thunderstorm was located over Mount
  Pleasant, or near Middletown, moving east at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Wilmington, Middletown, Pennsville, Carneys Point, New Castle,
  Penns Grove, Salem, Woodstown, Alloway, Quinton, Delaware City,
  Saint Georges, Mount Pleasant, Glasgow, Bear, Delaware Memorial
  Bridge, Hancocks Bridge, Port Penn, Wilmington Manor, and Hope
  Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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.

&&

LAT...LON 3976 7540 3975 7538 3973 7538 3970 7533
      3954 7526 3950 7531 3942 7577 3953 7578
      3962 7578
TIME...MOT...LOC 0140Z 251DEG 20KT 3954 7573 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Staarmann

3 follow-up statements

133 
WWUS51 KPHI 010209
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1009 PM EDT Mon Jun 30 2025

DEC003-NJC033-010245-
/O.CON.KPHI.SV.W.0115.000000T0000Z-250701T0245Z/
New Castle DE-Salem NJ-
1009 PM EDT Mon Jun 30 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR CENTRAL NEW CASTLE AND NORTHWESTERN SALEM COUNTIES...

At 1009 PM EDT, a severe thunderstorm was located over Salem, or 12
miles south of Wilmington, 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...
Wilmington, Middletown, Pennsville, Carneys Point, New Castle, Penns
Grove, Salem, Woodstown, Alloway, Quinton, Delaware City, Saint
Georges, Mount Pleasant, Bear, Delaware Memorial Bridge, Hancocks
Bridge, Port Penn, Wilmington Manor, Hope Creek, and Glasgow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.

&&

LAT...LON 3966 7566 3976 7540 3975 7538 3973 7538
      3970 7533 3954 7526 3950 7531 3943 7574
      3956 7574
TIME...MOT...LOC 0209Z 255DEG 20KT 3956 7553 

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

$$

Staarmann

810 
WWUS51 KPHI 010223
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1023 PM EDT Mon Jun 30 2025

DEC003-010233-
/O.CAN.KPHI.SV.W.0115.000000T0000Z-250701T0245Z/
New Castle DE-
1023 PM EDT Mon Jun 30 2025

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL NEW CASTLE COUNTY IS
CANCELLED...

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

LAT...LON 3972 7548 3974 7547 3976 7540 3975 7538
      3973 7538 3970 7533 3954 7526 3950 7531
      3947 7548 3969 7552
TIME...MOT...LOC 0223Z 253DEG 20KT 3957 7542 

$$

NJC033-010245-
/O.CON.KPHI.SV.W.0115.000000T0000Z-250701T0245Z/
Salem NJ-
1023 PM EDT Mon Jun 30 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR NORTHWESTERN SALEM COUNTY...

At 1023 PM EDT, a severe thunderstorm was located over Quinton, or 13
miles southeast of Wilmington, 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...
Wilmington, Pennsville, Carneys Point, Penns Grove, Salem, Woodstown,
Alloway, Quinton, Hancocks Bridge, and Delaware Memorial Bridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.

&&

LAT...LON 3972 7548 3974 7547 3976 7540 3975 7538
      3973 7538 3970 7533 3954 7526 3950 7531
      3947 7548 3969 7552
TIME...MOT...LOC 0223Z 253DEG 20KT 3957 7542 

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

$$

Staarmann

675 
WWUS51 KPHI 010236
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1036 PM EDT Mon Jun 30 2025

NJC033-010246-
/O.EXP.KPHI.SV.W.0115.000000T0000Z-250701T0245Z/
Salem NJ-
1036 PM EDT Mon Jun 30 2025

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN SALEM COUNTY WILL
EXPIRE AT 1045 PM EDT...

The storm which prompted the warning has weakened below severe 
limits, and is exiting the warned area. Therefore, the warning will 
be allowed to expire.

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

LAT...LON 3972 7548 3974 7547 3976 7540 3975 7538
      3973 7538 3970 7533 3954 7526 3950 7531
      3947 7548 3969 7552
TIME...MOT...LOC 0236Z 251DEG 20KT 3959 7535 

$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 9:38 PM EDT	Special Marine Warning	PHI		67 min
Jul 1, 12:05 AM EDT	Special Marine Warning	PHI		37 min
Jul 1, 2:30 AM EDT	Flood Watch	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 3 more	19 hr
Jul 1, 1:47 PM EDT	Special Marine Warning	PHI		58 min
Jul 1, 2:58 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	47 min
Jul 1, 3:22 PM EDT	Special Marine Warning	PHI		83 min
Jul 1, 3:39 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Monmouth	66 min
Jul 1, 4:25 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	50 min
Jul 1, 4:36 PM EDT	Special Marine Warning	PHI		84 min
Jul 1, 5:00 PM EDT	Flash Flood Warning	PHI	Monmouth, Ocean	4 hr
Jul 1, 5:07 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	38 min
Jul 1, 5:10 PM EDT	Special Marine Warning	PHI		2 hr
Jul 1, 5:14 PM EDT	Special Marine Warning	PHI		91 min
Jul 1, 5:14 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	61 min
Jul 1, 5:43 PM EDT	Special Marine Warning	PHI		98 min
Jul 1, 6:11 PM EDT	Flash Flood Warning	PHI	Ocean	4 hr
Jul 1, 6:32 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	58 min
Jul 1, 6:35 PM EDT	Special Marine Warning	PHI		115 min
Jul 1, 6:39 PM EDT	Special Marine Warning	PHI		96 min
Jul 1, 6:44 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	46 min
Jul 1, 2:32 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	43 min
Jul 1, 4:50 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	55 min
Jul 1, 5:04 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	56 min
Jul 1, 5:42 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	48 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2025 Severe Thunderstorm Warnings in Delaware, 2025 Every severe thunderstorm warning in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.