Alert archive / New Jersey / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 62, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 31, 2025, 5:04 PM EDT for Cumberland County, Gloucester County, Salem County, New Jersey. It was in force for 41 min. 2 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
- May 31, 2025, 5:04 PM EDT (21:04 UTC)
- Expired
- May 31, 2025, 5:45 PM EDT
- In force
- 41 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ
The radar
The Philadelphia radar (KDIX), 69 km from the middle of the area, began a volume at 21:05 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 |
|---|---|---|---|
| May 31, 5:05 PM EDT | HAIL 0.7 | Woodstown, NJ | Dime size hail falling at time of report. |
| May 31, 5:05 PM EDT | HAIL 0.75 | 1 E Woodstown, NJ | Delayed report of penny size hail at Town and Country Golf Course in Woodstown. Time estimated. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.1 hours before the alert went out and 185 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
- 974 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- -32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
246
WUUS51 KPHI 312104
SVRPHI
NJC011-015-033-312145-
/O.NEW.KPHI.SV.W.0062.250531T2104Z-250531T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
504 PM EDT Sat May 31 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Cumberland County in southern New Jersey...
Central Salem County in southern New Jersey...
Southern Gloucester County in southern New Jersey...
* Until 545 PM EDT.
* At 504 PM EDT, a severe thunderstorm was located over Woodstown, or
12 miles southeast of Wilmington, 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...
Vineland, Millville, Glassboro, Clayton, Buena, Woodstown, Alloway,
Newfield, Elmer, Franklinville, Victory Lakes, Olivet, Malaga,
Seabrook Farms, South Vineland, Rosenhayn, Monroe Township,
Williamstown, and Centerton.
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 3953 7496 3952 7499 3951 7497 3937 7505
3958 7545 3972 7538 3968 7492 3966 7491
3963 7491
TIME...MOT...LOC 2104Z 291DEG 25KT 3964 7532
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann2 follow-up statements
915
WWUS51 KPHI 312122
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
522 PM EDT Sat May 31 2025
NJC011-015-033-312145-
/O.CON.KPHI.SV.W.0062.000000T0000Z-250531T2145Z/
Cumberland NJ-Salem NJ-Gloucester NJ-
522 PM EDT Sat May 31 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR NORTHEASTERN CUMBERLAND...EAST CENTRAL SALEM AND SOUTHEASTERN
GLOUCESTER COUNTIES...
At 521 PM EDT, a severe thunderstorm was located over Elmer, or 13
miles northwest of Vineland, moving east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Vineland, Millville, Glassboro, Clayton, Buena, Woodstown, Alloway,
Newfield, Elmer, Franklinville, Victory Lakes, Olivet, Malaga, South
Vineland, Rosenhayn, Monroe Township, Williamstown, Seabrook Farms,
and Centerton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3953 7496 3952 7499 3951 7497 3940 7503
3958 7536 3971 7529 3968 7492 3966 7491
3963 7491
TIME...MOT...LOC 2121Z 288DEG 25KT 3962 7515
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann686
WWUS51 KPHI 312136
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
536 PM EDT Sat May 31 2025
NJC011-312145-
/O.CAN.KPHI.SV.W.0062.000000T0000Z-250531T2145Z/
Cumberland NJ-
536 PM EDT Sat May 31 2025
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CUMBERLAND COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has weakened and
moved out of the warned area. Therefore, the warning has been
cancelled.
LAT...LON 3953 7496 3952 7499 3956 7505 3955 7508
3958 7517 3969 7513 3968 7492 3966 7491
3963 7491
TIME...MOT...LOC 2135Z 291DEG 25KT 3958 7502
$$
NJC015-033-312145-
/O.CON.KPHI.SV.W.0062.000000T0000Z-250531T2145Z/
Salem NJ-Gloucester NJ-
536 PM EDT Sat May 31 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR EAST CENTRAL SALEM AND SOUTHEASTERN GLOUCESTER COUNTIES...
At 535 PM EDT, a severe thunderstorm was located over Malaga, or 8
miles north of Vineland, moving east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Glassboro, Clayton, Buena, Newfield, Elmer, Franklinville, Victory
Lakes, Malaga, Monroe Township, and Williamstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3953 7496 3952 7499 3956 7505 3955 7508
3958 7517 3969 7513 3968 7492 3966 7491
3963 7491
TIME...MOT...LOC 2135Z 291DEG 25KT 3958 7502
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 9:04 PM EDT | Wind Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 10 hr |
| May 30, 11:12 PM EDT | Flash Flood Warning | PHI | Gloucester, Salem | 3 hr |
| May 30, 11:36 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester | 4 hr |
| May 31, 12:34 AM EDT | Flash Flood Warning | PHI | Burlington, Mercer | 3 hr |
| May 31, 4:00 AM EDT | Areal Flood Warning | PHI | Morris, Sussex, Warren | 9 hr |
| May 31, 4:19 AM EDT | Areal Flood Warning | PHI | Hunterdon | 6 hr |
| May 31, 5:13 AM EDT | Areal Flood Warning | PHI | Somerset | 97 min |
| May 31, 8:46 AM EDT | Areal Flood Warning | PHI | Somerset | 7 hr |
| May 31, 2:12 PM EDT | Special Marine Warning | PHI | 63 min | |
| May 31, 3:10 PM EDT | Special Marine Warning | PHI | 65 min | |
| May 31, 3:14 PM EDT | Severe Thunderstorm Warning | PHI | Cape May | 16 min |
| May 31, 4:51 PM EDT | Special Marine Warning | PHI | 84 min | |
| May 31, 6:20 PM EDT | River Flood Warning | PHI | Morris | 12 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.