Alert archive / New Jersey / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 221, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 6, 2025, 2:47 PM EDT for 4 counties in New Jersey. It was in force for 43 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 6, 2025, 2:47 PM EDT (18:47 UTC)
- Expired
- Sep 6, 2025, 3:30 PM EDT
- In force
- 43 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ
The radar
The Philadelphia radar (KDIX), 42 km from the middle of the area, began a volume at 18:46 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 6, 3:05 PM EDT | TSTM WND DMG | 2 N Shamong, NJ | Social media report of snapped trees and branches in the Olde Forge section of Shamong. Time estimated by 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 |
|---|---|---|---|
| Sep 6, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 6.8 hours before the alert went out and 207 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
- 691 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 1059 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted.
661
WUUS51 KPHI 061847
SVRPHI
NJC001-005-007-015-061930-
/O.NEW.KPHI.SV.W.0221.250906T1847Z-250906T1930Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
247 PM EDT Sat Sep 6 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Atlantic County in southern New Jersey...
Southeastern Camden County in southern New Jersey...
East central Gloucester County in southern New Jersey...
Southeastern Burlington County in southern New Jersey...
* Until 330 PM EDT.
* At 247 PM EDT, a severe thunderstorm was located over Chesilhurst,
or 17 miles southeast of Gloucester City, moving northeast at 40
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...
Hammonton, Berlin, Tabernacle, Shamong, Presidential Lakes Estates,
Chesilhurst, Pemberton, Wrightstown, Sicklerville, Atsion,
Leisuretowne, Chatsworth, Atco, Victory Lakes, Wharton State
Forest, Presidential Lakes, Williamstown, Browns Mills, Marlton
Lakes, and Monroe Township.
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 3957 7496 3965 7504 3976 7500 4007 7455
3977 7439
TIME...MOT...LOC 1847Z 242DEG 35KT 3972 7489
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MJL3 follow-up statements
169
WWUS51 KPHI 061902
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
302 PM EDT Sat Sep 6 2025
NJC015-061911-
/O.CAN.KPHI.SV.W.0221.000000T0000Z-250906T1930Z/
Gloucester NJ-
302 PM EDT Sat Sep 6 2025
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL GLOUCESTER COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
southern New Jersey.
LAT...LON 3977 7440 3960 7487 3970 7494 3985 7487
4007 7455 3977 7439
TIME...MOT...LOC 1901Z 242DEG 35KT 3979 7472
$$
NJC001-005-007-061930-
/O.CON.KPHI.SV.W.0221.000000T0000Z-250906T1930Z/
Atlantic NJ-Camden NJ-Burlington NJ-
302 PM EDT Sat Sep 6 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR NORTHWESTERN ATLANTIC...SOUTHEASTERN CAMDEN AND EASTERN
BURLINGTON COUNTIES...
At 301 PM EDT, a severe thunderstorm was located over Shamong, or 22
miles east of Gloucester City, moving northeast at 40 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...
Hammonton, Tabernacle, Shamong, Presidential Lakes Estates,
Chesilhurst, Pemberton, Wrightstown, Atco, Wharton State Forest,
Presidential Lakes, Atsion, Browns Mills, Leisuretowne, Chatsworth,
Old Halfway, Medford Lakes, Folsom, Country Lake Estates, Pemberton
Heights, and Fort Dix.
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 3977 7440 3960 7487 3970 7494 3985 7487
4007 7455 3977 7439
TIME...MOT...LOC 1901Z 242DEG 35KT 3979 7472
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MJL838
WWUS51 KPHI 061917
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
317 PM EDT Sat Sep 6 2025
NJC001-007-061927-
/O.CAN.KPHI.SV.W.0221.000000T0000Z-250906T1930Z/
Atlantic NJ-Camden NJ-
317 PM EDT Sat Sep 6 2025
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ATLANTIC AND
SOUTHEASTERN CAMDEN COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
southern New Jersey.
LAT...LON 3977 7440 3968 7466 3978 7478 3987 7468
4001 7452 3977 7439
TIME...MOT...LOC 1917Z 242DEG 35KT 3986 7454
$$
NJC005-061930-
/O.CON.KPHI.SV.W.0221.000000T0000Z-250906T1930Z/
Burlington NJ-
317 PM EDT Sat Sep 6 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR SOUTHEASTERN BURLINGTON COUNTY...
At 317 PM EDT, a severe thunderstorm was located near Chatsworth, or
20 miles southwest of Toms River, moving northeast at 40 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...
Tabernacle, Shamong, Presidential Lakes Estates, Wharton State
Forest, Presidential Lakes, Atsion, Chatsworth, Browns Mills, and
Country Lake Estates.
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 3977 7440 3968 7466 3978 7478 3987 7468
4001 7452 3977 7439
TIME...MOT...LOC 1917Z 242DEG 35KT 3986 7454
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MJL182
WWUS51 KPHI 061928
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
328 PM EDT Sat Sep 6 2025
NJC005-061938-
/O.EXP.KPHI.SV.W.0221.000000T0000Z-250906T1930Z/
Burlington NJ-
328 PM EDT Sat Sep 6 2025
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BURLINGTON COUNTY
WILL EXPIRE AT 330 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
southern New Jersey.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 3977 7440 3968 7466 3978 7478 3987 7468
4001 7452 3977 7439
TIME...MOT...LOC 1928Z 242DEG 35KT 3990 7445
$$
MJLThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 2:22 AM EDT | Small Craft Advisory | PHI | 19 hr | |
| Sep 6, 2:14 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 46 min |
| Sep 6, 2:46 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Somerset | 23 min |
| Sep 6, 2:52 PM EDT | Special Marine Warning | PHI | 23 min | |
| Sep 6, 3:34 PM EDT | Special Marine Warning | PHI | 56 min | |
| Sep 6, 3:38 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 38 min |
| Sep 6, 4:23 PM EDT | Special Marine Warning | PHI | 24 min | |
| Sep 6, 4:57 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden | 31 min |
| Sep 6, 5:20 PM EDT | Special Marine Warning | PHI | 25 min | |
| Sep 6, 5:51 PM EDT | Special Marine Warning | PHI | 54 min | |
| Sep 6, 6:07 PM EDT | Special Marine Warning | PHI | 38 min | |
| Sep 6, 6:20 PM EDT | Flash Flood Warning | PHI | Monmouth | 4 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.