Alert archive / New Jersey / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 13, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 4, 2025, 5:12 AM EDT for 5 counties in New Jersey. It was in force for 63 min. 6 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
- Apr 4, 2025, 5:12 AM EDT (09:12 UTC)
- Expired
- Apr 4, 2025, 6:15 AM EDT
- In force
- 63 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, Ocean County, NJ
The radar
The Philadelphia radar (KDIX), 28 km from the middle of the area, began a volume at 09:16 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 |
|---|---|---|---|
| Apr 4, 5:12 AM EDT | TSTM WND DMG | 1 N Gloucester Twp, NJ | Multiple trees down in Broadmoor neighborhood. |
| Apr 4, 5:15 AM EDT | TSTM WND DMG | 1 E Somerdale, NJ | Trees down. Time estimated from radar. |
| Apr 4, 5:15 AM EDT | TSTM WND DMG | Gloucester Twp, NJ | Multiple trees and wires down. Time estimated from radar. |
| Apr 4, 5:15 AM EDT | TSTM WND DMG | Somerdale, NJ | Multiple trees and wires down. Time estimated from radar. |
| Apr 4, 5:35 AM EDT | TSTM WND DMG | Shamong, NJ | Tree damage and a large field irrigation system toppled over. Time estimated from radar. |
| Apr 4, 6:04 AM EDT | HAIL 1 | 1 Nw Williamstown, NJ | Report from mPING: Quarter (1.00 in.). |
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, 9.2 hours before the alert went out and 194 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 665 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 372 m²/s²
- 0-3 km storm-relative helicity
- 388 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
The text
As transmitted.
904
WUUS51 KPHI 040912
SVRPHI
NJC001-005-007-015-029-041015-
/O.NEW.KPHI.SV.W.0013.250404T0912Z-250404T1015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
512 AM EDT Fri Apr 4 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
North central Atlantic County in southern New Jersey...
Ocean County in southern New Jersey...
Camden County in southern New Jersey...
Northeastern Gloucester County in southern New Jersey...
Burlington County in southern New Jersey...
* Until 615 AM EDT.
* At 511 AM EDT, a severe thunderstorm was located over Lindenwold,
or 9 miles southeast of Gloucester City, moving east at 55 mph.
This storm has a history of producing large hail and wind gusts up
to 60 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Trained weather spotters.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
Mystic Island, Lumberton, Atsion, Chesilhurst, Island Heights,
Leisuretowne, Pine Hill, Pemberton, Wharton State Forest, Crestwood
Village, Haddonfield, Magnolia, Medford, Whiting, Brookville,
Batsto, Tabernacle, Clementon, Seaside Heights, and Somerdale.
This includes the following highways...
New Jersey Turnpike between exits 4 and 5.
Interstate 295 in New Jersey between mile markers 30 and 47.
Garden State Parkway between mile markers 50 and 88.
Atlantic City Expressway between mile markers 34 and 44.
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.
&&
LAT...LON 3973 7515 4004 7495 4004 7396 3950 7418
TIME...MOT...LOC 0911Z 276DEG 50KT 3983 7497
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse3 follow-up statements
234
WWUS51 KPHI 040928
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
528 AM EDT Fri Apr 4 2025
NJC015-040936-
/O.CAN.KPHI.SV.W.0013.000000T0000Z-250404T1015Z/
Gloucester NJ-
528 AM EDT Fri Apr 4 2025
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GLOUCESTER COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4004 7397 4002 7397 3950 7418 3971 7486
4003 7471
TIME...MOT...LOC 0926Z 276DEG 50KT 3981 7469
$$
NJC001-005-007-029-041015-
/O.CON.KPHI.SV.W.0013.000000T0000Z-250404T1015Z/
Atlantic NJ-Ocean NJ-Camden NJ-Burlington NJ-
528 AM EDT Fri Apr 4 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 AM EDT
FOR NORTHERN ATLANTIC...OCEAN...EAST CENTRAL CAMDEN AND SOUTHEASTERN
BURLINGTON COUNTIES...
At 526 AM EDT, a severe thunderstorm was located over Shamong, or 23
miles east of Gloucester City, moving east at 60 mph. The most
intense portion of this storm is moving through central portions of
Burlington County.
HAZARD...60 mph wind gusts and quarter size hail. This storm has a
history of producing large hail and wind gusts to 60 mph.
SOURCE...Trained weather spotters.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Country Lake Estates, Mystic Island, Atsion, Manahawkin, Pemberton
Heights, Island Heights, Holiday Heights, Leisuretowne, Pemberton,
Wrightstown, Tuckerton, Barnegat, Surf City, Wharton State Forest,
Presidential Lakes, Crestwood Village, South Toms River, Whiting,
Brookville, and Bass River State Forest.
This includes Garden State Parkway between mile markers 52 and 88.
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 4004 7397 4002 7397 3950 7418 3971 7486
4003 7471
TIME...MOT...LOC 0926Z 276DEG 50KT 3981 7469
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse434
WWUS51 KPHI 040947
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
547 AM EDT Fri Apr 4 2025
NJC001-007-040957-
/O.CAN.KPHI.SV.W.0013.000000T0000Z-250404T1015Z/
Atlantic NJ-Camden NJ-
547 AM EDT Fri Apr 4 2025
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ATLANTIC AND EAST
CENTRAL CAMDEN COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, this warning has been cancelled.
LAT...LON 4004 7397 4002 7397 3980 7406 3982 7456
4003 7446
TIME...MOT...LOC 0947Z 271DEG 50KT 3982 7429
$$
NJC005-029-041015-
/O.CON.KPHI.SV.W.0013.000000T0000Z-250404T1015Z/
Ocean NJ-Burlington NJ-
547 AM EDT Fri Apr 4 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 AM EDT
FOR CENTRAL OCEAN AND EAST CENTRAL BURLINGTON COUNTIES...
At 547 AM EDT, a severe thunderstorm was located over Brookville, or
13 miles southwest of Toms River, moving east at 60 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...
Silver Ridge, Holiday City, Dover Beaches North, Holiday City South,
Pleasant Plains, Island Heights, Holiday Heights, Chatsworth, Dover
Beaches South, Beachwood, Leisure Knoll, Crestwood Village, Holiday
City-Berkeley, Bamber Lake, Gilford Park, South Toms River, Cedar
Glen Lakes, Toms River, Lakehurst, and Whiting.
This includes Garden State Parkway between mile markers 72 and 87.
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 4004 7397 4002 7397 3980 7406 3982 7456
4003 7446
TIME...MOT...LOC 0947Z 271DEG 50KT 3982 7429
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse688
WWUS51 KPHI 041007
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
607 AM EDT Fri Apr 4 2025
NJC005-029-041016-
/O.EXP.KPHI.SV.W.0013.000000T0000Z-250404T1015Z/
Ocean NJ-Burlington NJ-
607 AM EDT Fri Apr 4 2025
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL OCEAN AND EAST CENTRAL
BURLINGTON COUNTIES WILL EXPIRE AT 615 AM EDT...
The storm which prompted the warning has weakened below severe
limits, and will be exiting the warned area. Therefore, the warning
will be allowed to expire. However gusty winds are still possible
with this thunderstorm.
LAT...LON 4004 7397 4002 7397 3980 7406 3982 7456
4003 7446
TIME...MOT...LOC 1006Z 276DEG 50KT 3980 7402
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 4:40 AM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Salem | 50 min |
| Apr 4, 5:31 AM EDT | Special Marine Warning | PHI | 59 min | |
| Apr 4, 5:46 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more | 42 min |
| Apr 4, 6:21 AM EDT | Special Marine Warning | PHI | 26 min | |
| Apr 4, 3:00 PM EDT | Small Craft Advisory | PHI | 51 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2025Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.