Alert archive / New Jersey / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 47, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 16, 2025, 1:26 PM EDT for Cape May County, Cumberland County, New Jersey. It was in force for 49 min. 3 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 16, 2025, 1:26 PM EDT (17:26 UTC)
- Expired
- May 16, 2025, 2:15 PM EDT
- In force
- 49 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cape May County, NJ, Cumberland County, NJ
The radar
The Dover AFB radar (KDOX), 79 km from the middle of the area, began a volume at 17:26 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 16, 1:45 PM EDT | TSTM WND DMG | 2 S Dennisville, NJ | Wires down on Gravel Hole Road and Holly Glen Lane. Wires sparking. Time estimated from radar. |
| May 16, 1:50 PM EDT | MARINE TSTM WIND 47 | 1 Ene Avalon, NJ | Avalon 21st street mesonet reported a 47 MPH gust. |
| May 16, 2:00 PM EDT | HAIL 1.75 | Avalon, NJ | Hail up to the size of golf ball. 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 |
|---|---|---|---|
| May 16, 10:06 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 5.4 hours before the alert went out and 159 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
- 1302 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 868 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 197 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -0.7
The text
As transmitted.
921
WUUS51 KPHI 161726
SVRPHI
NJC009-011-161815-
/O.NEW.KPHI.SV.W.0047.250516T1726Z-250516T1815Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
126 PM EDT Fri May 16 2025
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Cumberland County in southern New Jersey...
Cape May County in southern New Jersey...
* Until 215 PM EDT.
* At 126 PM EDT, a severe thunderstorm was located over Belleplain
Forest, or 14 miles west of Ocean City, moving southeast 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...
Ocean City, Somers Point, Woodbine, Sea Isle City, Avalon,
Longport, Corbin City, Belleplain Forest, Beesleys Point, Seaville,
Marmora, Dennisville, Goshen, Strathmere, Eldora, and Cape May
Court House.
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.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3919 7464 3906 7472 3918 7500 3931 7490
3930 7476 3930 7472 3929 7470 3930 7466
3929 7465 3930 7464 3931 7450
TIME...MOT...LOC 1726Z 295DEG 26KT 3923 7486
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann2 follow-up statements
820
WWUS51 KPHI 161753
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
153 PM EDT Fri May 16 2025
NJC011-161803-
/O.CAN.KPHI.SV.W.0047.000000T0000Z-250516T1815Z/
Cumberland NJ-
153 PM EDT Fri May 16 2025
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CUMBERLAND COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 500 PM EDT for
southern New Jersey.
LAT...LON 3919 7464 3906 7472 3917 7497 3919 7495
3917 7492 3918 7491 3920 7492 3922 7488
3924 7459
TIME...MOT...LOC 1753Z 256DEG 26KT 3911 7469
$$
NJC009-161815-
/O.CON.KPHI.SV.W.0047.000000T0000Z-250516T1815Z/
Cape May NJ-
153 PM EDT Fri May 16 2025
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR CENTRAL CAPE MAY COUNTY...
At 153 PM EDT, a severe thunderstorm was located over Avalon, or 12
miles south of Ocean City, 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...
Ocean City, Woodbine, Sea Isle City, Avalon, Dennisville, Goshen,
Strathmere, Seaville, and Cape May Court House.
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.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3919 7464 3906 7472 3917 7497 3919 7495
3917 7492 3918 7491 3920 7492 3922 7488
3924 7459
TIME...MOT...LOC 1753Z 256DEG 26KT 3911 7469
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann920
WWUS51 KPHI 161806
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
206 PM EDT Fri May 16 2025
NJC009-161816-
/O.EXP.KPHI.SV.W.0047.000000T0000Z-250516T1815Z/
Cape May NJ-
206 PM EDT Fri May 16 2025
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CAPE MAY COUNTY WILL
EXPIRE AT 215 PM EDT...
The storm which prompted the warning has moved offshore. Therefore,
the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 500 PM EDT for
southern New Jersey.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 3919 7464 3906 7472 3917 7497 3919 7495
3917 7492 3918 7491 3920 7492 3922 7488
3924 7459
TIME...MOT...LOC 1806Z 317DEG 18KT 3908 7471
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 9:30 PM EDT | Marine Dense Fog Advisory | PHI | 15 hr | |
| May 15, 9:34 PM EDT | Dense Fog Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 12 hr |
| May 16, 11:16 AM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 59 min |
| May 16, 11:32 AM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester, Mercer, Salem | 4 hr |
| May 16, 11:41 AM EDT | Special Marine Warning | PHI | 49 min | |
| May 16, 11:46 AM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 59 min |
| May 16, 12:20 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Cumberland, Gloucester, Salem | 40 min |
| May 16, 12:22 PM EDT | Tornado Warning | PHI | Cumberland, Salem | 23 min |
| May 16, 12:31 PM EDT | Flash Flood Warning | PHI | Camden, Gloucester | 4 hr |
| May 16, 12:42 PM EDT | Tornado Warning | PHI | Atlantic, Cape May, Cumberland | 48 min |
| May 16, 12:45 PM EDT | Tornado Warning | PHI | Atlantic, Camden, Gloucester | 30 min |
| May 16, 12:47 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester, Salem | 4 hr |
| May 16, 12:49 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more | 56 min |
| May 16, 12:51 PM EDT | Special Marine Warning | PHI | 114 min | |
| May 16, 12:52 PM EDT | Tornado Warning | PHI | Atlantic, Camden, Gloucester | 23 min |
| May 16, 1:28 PM EDT | Flash Flood Warning | PHI | Burlington, Ocean | 3 hr |
| May 16, 1:32 PM EDT | Special Marine Warning | PHI | 88 min | |
| May 16, 1:36 PM EDT | Flash Flood Warning | PHI | Atlantic, Cape May, Ocean | 3 hr |
| May 16, 1:58 PM EDT | Severe Thunderstorm Warning | PHI | Cape May | 32 min |
| May 16, 2:01 PM EDT | Special Marine Warning | PHI | 86 min | |
| May 16, 2:24 PM EDT | Areal Flood Warning | PHI | Hunterdon, Somerset | 94 min |
| May 16, 6:31 PM EDT | Special Marine Warning | PHI | 119 min | |
| May 16, 6:35 PM EDT | Severe Thunderstorm Warning | PHI | Cape May, Cumberland, Gloucester, Salem | 70 min |
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.