Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 190, NWS Philadelphia/Mount Holly

July 14, 2023Middlesex County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 14, 2023, 6:40 AM EDT for Middlesex County, Somerset County, New Jersey. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 14, 2023, 6:40 AM EDT (10:40 UTC)
Expired: Jul 14, 2023, 7:30 AM EDT
In force: 50 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Middlesex County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 59 km from the middle of the area, began a volume at 10:39 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 10.7 hours before the alert went out and 130 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: 1347 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 910 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 202 m²/s²
0-3 km storm-relative helicity: 222 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 11.4

Open this sounding in Storm Lab

The text

As transmitted.

215 
WUUS51 KPHI 141040
SVRPHI
NJC023-035-141130-
/O.NEW.KPHI.SV.W.0190.230714T1040Z-230714T1130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
640 AM EDT Fri Jul 14 2023

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southeastern Somerset County in northern New Jersey...
  Middlesex County in northern New Jersey...

* Until 730 AM EDT.

* At 640 AM EDT, a severe thunderstorm was located over Dayton, or 8
  miles south of New Brunswick, moving northeast at 45 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...
  New Brunswick, Perth Amboy, Somerset, Edison, Old Bridge, East
  Brunswick, South Brunswick, Sayreville, North Brunswick, Matawan,
  Jamesburg, Cranbury, Colonia, Brownville, Dayton, North Brunswick
  Township, Clearbrook Park, Whittingham, Kendall Park and Society
  Hill.

This includes the following highways...
 New Jersey Turnpike between exits 9 and 12.
 Interstate 287 in New Jersey between mile markers 0 and 6.
 Garden State Parkway between mile markers 121 and 134.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4044 7424 4041 7425 4027 7447 4037 7461
      4060 7442 4061 7432 4056 7422 4055 7425
      4050 7426 4050 7428 4046 7426 4045 7423
TIME...MOT...LOC 1040Z 223DEG 39KT 4037 7449 

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

$$

MLB

4 follow-up statements

834 
WWUS51 KPHI 141056
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
656 AM EDT Fri Jul 14 2023

NJC023-035-141130-
/O.CON.KPHI.SV.W.0190.000000T0000Z-230714T1130Z/
Somerset NJ-Middlesex NJ-
656 AM EDT Fri Jul 14 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 AM EDT
FOR SOUTHEASTERN SOMERSET AND MIDDLESEX COUNTIES...

At 656 AM EDT, a severe thunderstorm was located over Sayreville, or
near Perth Amboy, moving northeast at 45 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...
New Brunswick, Perth Amboy, Somerset, Edison, Old Bridge, East
Brunswick, Sayreville, North Brunswick, Matawan, Jamesburg, Colonia,
Brownville, North Brunswick Township, Society Hill, Kendall Park,
Dayton, Woodbridge, South Plainfield, South River and Highland Park.

This includes the following highways...
 New Jersey Turnpike between exits 10 and 12.
 Interstate 287 in New Jersey between mile markers 0 and 6.
 Garden State Parkway between mile markers 121 and 134.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4044 7424 4041 7425 4032 7439 4042 7457
      4060 7442 4061 7432 4056 7422 4055 7425
      4050 7426 4050 7428 4046 7426 4045 7423
TIME...MOT...LOC 1056Z 223DEG 39KT 4050 7433 

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

$$

MLB

318 
WWUS51 KPHI 141108
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
708 AM EDT Fri Jul 14 2023

NJC035-141118-
/O.CAN.KPHI.SV.W.0190.000000T0000Z-230714T1130Z/
Somerset NJ-
708 AM EDT Fri Jul 14 2023

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SOMERSET COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4044 7424 4041 7425 4045 7440 4052 7448
      4060 7442 4061 7432 4056 7422 4055 7425
      4050 7426 4050 7428 4046 7426 4045 7423
TIME...MOT...LOC 1108Z 223DEG 39KT 4060 7421 

$$

NJC023-141130-
/O.CON.KPHI.SV.W.0190.000000T0000Z-230714T1130Z/
Middlesex NJ-
708 AM EDT Fri Jul 14 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 AM EDT
FOR NORTHEASTERN MIDDLESEX COUNTY...

At 708 AM EDT, a severe thunderstorm was located over Carteret, or
over Linden, moving northeast at 45 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...
New Brunswick, Perth Amboy, Edison, East Brunswick, Sayreville,
Matawan, Colonia, Society Hill, North Brunswick Township, Woodbridge,
South Plainfield, South River, Highland Park, Metuchen, Madison Park,
Iselin, Sewaren, Port Reading, Fords and Avenel.

This includes the following highways...
 New Jersey Turnpike between exits 10 and 12.
 Interstate 287 in New Jersey between mile markers 0 and 6.
 Garden State Parkway between mile markers 121 and 134.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4044 7424 4041 7425 4045 7440 4052 7448
      4060 7442 4061 7432 4056 7422 4055 7425
      4050 7426 4050 7428 4046 7426 4045 7423
TIME...MOT...LOC 1108Z 223DEG 39KT 4060 7421 

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

$$

MLB

809 
WWUS51 KPHI 141115
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
715 AM EDT Fri Jul 14 2023

NJC023-141130-
/O.CON.KPHI.SV.W.0190.000000T0000Z-230714T1130Z/
Middlesex NJ-
715 AM EDT Fri Jul 14 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 AM EDT
FOR NORTHEASTERN MIDDLESEX COUNTY...

At 715 AM EDT, a severe thunderstorm was located over Bayonne, moving
northeast at 45 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...
Perth Amboy, Colonia, Woodbridge, Metuchen, Iselin, Fords, Sewaren,
Port Reading and Avenel.

This includes the following highways...
 New Jersey Turnpike between exits 11 and 12.
 Interstate 287 in New Jersey between mile markers 0 and 1.
 Garden State Parkway between mile markers 126 and 132.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4046 7426 4052 7437 4061 7431 4056 7422
      4055 7425 4050 7426 4050 7428
TIME...MOT...LOC 1115Z 223DEG 39KT 4066 7414 

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

$$

MLB

152 
WWUS51 KPHI 141125
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
725 AM EDT Fri Jul 14 2023

NJC023-141135-
/O.EXP.KPHI.SV.W.0190.000000T0000Z-230714T1130Z/
Middlesex NJ-
725 AM EDT Fri Jul 14 2023

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MIDDLESEX COUNTY
WILL EXPIRE AT 730 AM EDT...
        
The storm which prompted the warning has moved out of the area.
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 4046 7426 4052 7437 4061 7431 4056 7422
      4055 7425 4050 7426 4050 7428
TIME...MOT...LOC 1125Z 223DEG 39KT 4074 7405 

$$

MLB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 8:39 PM EDT	Coastal Flood Advisory	PHI	Ocean	5 hr
Jul 13, 8:53 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	67 min
Jul 13, 9:57 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	48 min
Jul 13, 10:49 PM EDT	Special Weather Statement	PHI	Sussex	26 min
Jul 14, 1:09 AM EDT	Special Weather Statement	PHI	Sussex	21 min
Jul 14, 1:52 AM EDT	Areal Flood Advisory	PHI	Sussex	3 hr
Jul 14, 5:54 AM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Somerset	51 min
Jul 14, 6:02 AM EDT	Special Weather Statement	PHI	Mercer	28 min
Jul 14, 6:20 AM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Morris, Somerset	40 min
Jul 14, 6:33 AM EDT	Special Weather Statement	PHI	Warren	27 min
Jul 14, 6:35 AM EDT	Special Weather Statement	PHI	Middlesex	25 min
Jul 14, 6:55 AM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren	50 min
Jul 14, 6:59 AM EDT	Special Weather Statement	PHI	Warren	31 min
Jul 14, 7:22 AM EDT	Special Weather Statement	PHI	Sussex	23 min
Jul 14, 7:27 AM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	18 min
Jul 14, 7:41 AM EDT	Special Weather Statement	PHI	Sussex	34 min
Jul 14, 4:21 PM EDT	Special Weather Statement	PHI	Somerset	39 min
Jul 14, 4:54 PM EDT	Special Weather Statement	PHI	Somerset	51 min
Jul 14, 6:06 PM EDT	Special Weather Statement	PHI	Morris	24 min
Jul 14, 6:07 PM EDT	Special Weather Statement	PHI	Warren	38 min
Jul 14, 6:20 PM EDT	Special Weather Statement	PHI	Sussex	25 min
Jul 14, 6:22 PM EDT	Severe Thunderstorm Warning	PHI	Warren	38 min
Jul 14, 6:26 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	49 min
Jul 14, 6:46 PM EDT	Special Weather Statement	PHI	Sussex	29 min
Jul 14, 6:52 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	53 min
Jul 14, 7:03 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	41 min
Jul 14, 7:08 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	39 min
Jul 14, 7:20 PM EDT	Special Weather Statement	PHI	Warren	25 min
Jul 14, 7:40 PM EDT	Flash Flood Warning	PHI	Morris, Sussex, Warren	6 hr
Jul 14, 7:46 PM EDT	Areal Flood Advisory	PHI	Sussex	2 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.