Alert archive / New Jersey / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 61, NWS Philadelphia/Mount Holly

May 31, 2025Cape May County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 31, 2025, 3:14 PM EDT for Cape May County, New Jersey. It was in force for 16 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: May 31, 2025, 3:14 PM EDT (19:14 UTC)
Expired: May 31, 2025, 3:30 PM EDT
In force: 16 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Cape May County, NJ

The radar

The Dover AFB radar (KDOX), 58 km from the middle of the area, began a volume at 19:17 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, 3:15 PM EDT	MARINE TSTM WIND 44	Cape May Harbor, NJ	Mesonet station DVI06445 Cape May.

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, 7.2 hours before the alert went out and 125 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: 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

Open this sounding in Storm Lab

The text

As transmitted.

119 
WUUS51 KPHI 311914
SVRPHI
NJC009-311930-
/O.NEW.KPHI.SV.W.0061.250531T1914Z-250531T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
314 PM EDT Sat May 31 2025

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southwestern Cape May County in southern New Jersey...

* Until 330 PM EDT.

* At 314 PM EDT, a severe thunderstorm was located over North Cape
  May, or near Cape May, moving east 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...
  Cape May, North Wildwood, Wildwood Crest, Avalon, West Cape May,
  Stone Harbor, Cape May Court House, Scotch Bonnet, Diamond Beach,
  Green Creek, Rio Grande, North Cape May, Villas, West Wildwood,
  Erma, and Whitesboro-Burleigh.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3885 7502 3909 7502 3912 7456 3895 7457
      3890 7460 3884 7469
TIME...MOT...LOC 1914Z 273DEG 33KT 3898 7492 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

PF

The 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, 4:51 PM EDT	Special Marine Warning	PHI		84 min
May 31, 5:04 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	41 min
May 31, 6:20 PM EDT	River Flood Warning	PHI	Morris	12 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.