Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 88, NWS Philadelphia/Mount Holly

June 25, 2023Middlesex County, Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 25, 2023, 6:31 PM EDT for Middlesex County, Morris County, Somerset County, New Jersey. It was in force for 29 min. 4 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: Jun 25, 2023, 6:31 PM EDT (22:31 UTC)
Expired: Jun 25, 2023, 7:00 PM EDT
In force: 29 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Middlesex County, NJ, Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 76 km from the middle of the area, began a volume at 22:35 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
Jun 25, 6:40 PM EDT	TSTM WND DMG	Green Brook Twp, NJ	Report of a tree down in Green Brook Twp. Time estimated via radar.
Jun 25, 6:40 PM EDT	TSTM WND DMG	Green Brook Twp, NJ	Report of a tree down in Green Brook Twp. Time estimated via radar.
Jun 25, 6:51 PM EDT	TSTM WND DMG	Long Hill Twp, NJ	Report of a tree down in Long Hill Twp. Time estimated via radar.
Jun 25, 6:51 PM EDT	TSTM WND DMG	Long Hill Twp, NJ	Report of a tree down in Long Hill Twp. Time estimated via radar.

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 12:00Z, 10.5 hours before the alert went out and 138 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: 696 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

300 
WUUS51 KPHI 252231
SVRPHI
NJC023-027-035-252300-
/O.NEW.KPHI.SV.W.0088.230625T2231Z-230625T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
631 PM EDT Sun Jun 25 2023

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  South central Morris County in northern New Jersey...
  Northern Somerset County in northern New Jersey...
  North central Middlesex County in northern New Jersey...

* Until 700 PM EDT.

* At 630 PM EDT, a severe thunderstorm was located over Middlesex, or
  near Somerville, moving northeast at 10 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Somerville, Bridgewater, Middlesex, Bound Brook, Manville, Mendham,
  Peapack And Gladstone, Far Hills, Martinsville, Millington, Society
  Hill, Basking Ridge, South Plainfield, North Plainfield,
  Bernardsville, Dunellen, Raritan, Watchung and South Bound Brook.

This includes the following highways...
 Interstate 78 in New Jersey between mile markers 28 and 43.
 Interstate 287 in New Jersey between mile markers 5 and 30.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4052 7442 4057 7472 4076 7467 4072 7440
      4067 7446 4066 7445 4067 7441 4065 7440
      4060 7446 4060 7438
TIME...MOT...LOC 2230Z 207DEG 7KT 4059 7452 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MLB

2 follow-up statements

669 
WWUS51 KPHI 252247
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
647 PM EDT Sun Jun 25 2023

NJC023-027-035-252300-
/O.CON.KPHI.SV.W.0088.000000T0000Z-230625T2300Z/
Morris NJ-Somerset NJ-Middlesex NJ-
647 PM EDT Sun Jun 25 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR SOUTH CENTRAL MORRIS...NORTHERN SOMERSET AND NORTH CENTRAL
MIDDLESEX COUNTIES...

At 647 PM EDT, a severe thunderstorm was located near Middlesex, or
near Plainfield, moving northeast at 10 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...
Somerville, Bridgewater, Middlesex, Bound Brook, Manville, Mendham,
Peapack And Gladstone, Far Hills, Martinsville, Millington, Society
Hill, Basking Ridge, South Plainfield, North Plainfield,
Bernardsville, Dunellen, Raritan, Watchung and South Bound Brook.

This includes the following highways...
 Interstate 78 in New Jersey between mile markers 28 and 43.
 Interstate 287 in New Jersey between mile markers 5 and 30.

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 4052 7442 4057 7472 4076 7467 4072 7440
      4067 7446 4066 7445 4067 7441 4065 7440
      4060 7446 4060 7438
TIME...MOT...LOC 2247Z 207DEG 7KT 4062 7450 

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

$$

MLB

407 
WWUS51 KPHI 252255
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
655 PM EDT Sun Jun 25 2023

NJC023-027-035-252305-
/O.EXP.KPHI.SV.W.0088.000000T0000Z-230625T2300Z/
Morris NJ-Somerset NJ-Middlesex NJ-
655 PM EDT Sun Jun 25 2023

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MORRIS...
NORTHERN SOMERSET AND NORTH CENTRAL MIDDLESEX COUNTIES WILL EXPIRE AT
700 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.

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 4052 7442 4057 7472 4076 7467 4072 7440
      4067 7446 4066 7445 4067 7441 4065 7440
      4060 7446 4060 7438
TIME...MOT...LOC 2255Z 207DEG 7KT 4063 7449 

$$

MLB

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 24, 8:13 PM EDT	Special Weather Statement	PHI	Warren	32 min
Jun 24, 8:18 PM EDT	Areal Flood Advisory	PHI	Warren	3 hr
Jun 25, 11:26 AM EDT	Special Weather Statement	PHI	Ocean	34 min
Jun 25, 12:20 PM EDT	Special Weather Statement	PHI	Ocean	25 min
Jun 25, 12:32 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Ocean	28 min
Jun 25, 12:50 PM EDT	Areal Flood Advisory	PHI	Burlington, Ocean	3 hr
Jun 25, 2:25 PM EDT	Special Weather Statement	PHI	Ocean	35 min
Jun 25, 3:09 PM EDT	Special Weather Statement	PHI	Hunterdon	36 min
Jun 25, 3:18 PM EDT	Areal Flood Advisory	PHI	Hunterdon	3 hr
Jun 25, 4:01 PM EDT	Flash Flood Warning	PHI	Burlington, Camden	4 hr
Jun 25, 4:05 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	25 min
Jun 25, 4:52 PM EDT	Special Weather Statement	PHI	Camden	23 min
Jun 25, 4:57 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	33 min
Jun 25, 5:13 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	32 min
Jun 25, 5:22 PM EDT	Flash Flood Warning	PHI	Camden	3 hr
Jun 25, 5:43 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	32 min
Jun 25, 6:13 PM EDT	Special Weather Statement	PHI	Burlington, Camden	32 min
Jun 25, 6:21 PM EDT	Special Weather Statement	PHI	Somerset	24 min
Jun 25, 6:26 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	34 min
Jun 25, 6:53 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Monmouth, Ocean	37 min
Jun 25, 6:57 PM EDT	Areal Flood Advisory	PHI	Middlesex, Morris, Somerset	3 hr
Jun 25, 7:20 PM EDT	Special Weather Statement	PHI	Monmouth	25 min
Jun 25, 7:35 PM EDT	Special Weather Statement	PHI	Middlesex	25 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2023 Every severe thunderstorm warning in 2023

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.