Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 152, NWS Philadelphia/Mount Holly

July 2, 2023Middlesex County, Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 2, 2023, 11:13 PM EDT for Middlesex County, Morris County, Somerset County, New Jersey. It was in force for 32 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 2, 2023, 11:13 PM EDT (03:13 UTC)
Expired
Jul 2, 2023, 11:45 PM EDT
In force
32 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

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

The radar

The Philadelphia radar (KDIX), 75 km from the middle of the area, began a volume at 03:12 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, 3.2 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-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2023-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 634 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2023-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 125 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
634 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
833 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
125 m²/s²
0-3 km storm-relative helicity
163 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.2

Open this sounding in Storm Lab

The text

As transmitted.

813 
WUUS51 KPHI 030313
SVRPHI
NJC023-027-035-030345-
/O.NEW.KPHI.SV.W.0152.230703T0313Z-230703T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1113 PM EDT Sun Jul 2 2023

The National Weather Service in Mount Holly NJ has issued a

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

* Until 1145 PM EDT.

* At 1112 PM EDT, a severe thunderstorm was located over Millington,
  or near Somerville, moving east at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Perth Amboy, Somerville, Edison, Bridgewater, Carteret, Madison,
  Middlesex, Bound Brook, Manville, Chatham, Peapack And Gladstone,
  Far Hills, Colonia, Martinsville, Millington, Society Hill, Basking
  Ridge, Woodbridge, South Plainfield and North Plainfield.

This includes the following highways...
 New Jersey Turnpike between exits 11 and 13.
 Interstate 78 in New Jersey between mile markers 30 and 43.
 Interstate 287 in New Jersey between mile markers 0 and 10, and
between mile markers 12 and 31.
 Garden State Parkway between mile markers 128 and 134.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4056 7421 4055 7425 4051 7426 4056 7468
      4074 7467 4076 7436 4067 7446 4066 7445
      4067 7441 4065 7440 4060 7446 4061 7431
      4059 7428 4060 7421
TIME...MOT...LOC 0312Z 272DEG 25KT 4065 7456 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Fitzsimmons
2 follow-up statements
407 
WWUS51 KPHI 030330
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1130 PM EDT Sun Jul 2 2023

NJC023-027-035-030345-
/O.CON.KPHI.SV.W.0152.000000T0000Z-230703T0345Z/
Morris NJ-Somerset NJ-Middlesex NJ-
1130 PM EDT Sun Jul 2 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR SOUTHEASTERN MORRIS...EAST CENTRAL SOMERSET AND NORTHEASTERN
MIDDLESEX COUNTIES...

At 1130 PM EDT, a severe thunderstorm was located over Plainfield,
moving east at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Perth Amboy, Edison, Carteret, Madison, Middlesex, Chatham, Colonia,
Society Hill, Woodbridge, South Plainfield, North Plainfield,
Metuchen, Dunellen, Watchung, Iselin, Sewaren, Port Reading, Fords
and Avenel.

This includes the following highways...
 New Jersey Turnpike between exits 11 and 13.
 Interstate 78 in New Jersey between mile markers 39 and 43.
 Interstate 287 in New Jersey between mile markers 0 and 10.
 Garden State Parkway between mile markers 128 and 134.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4054 7451 4075 7450 4076 7436 4067 7446
      4066 7445 4067 7441 4065 7440 4060 7446
      4061 7431 4059 7428 4060 7421 4056 7421
      4055 7425 4051 7426
TIME...MOT...LOC 0330Z 271DEG 24KT 4065 7442 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Fitzsimmons
045 
WWUS51 KPHI 030338
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1138 PM EDT Sun Jul 2 2023

NJC023-027-035-030348-
/O.EXP.KPHI.SV.W.0152.000000T0000Z-230703T0345Z/
Morris NJ-Somerset NJ-Middlesex NJ-
1138 PM EDT Sun Jul 2 2023

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MORRIS...EAST
CENTRAL SOMERSET AND NORTHEASTERN MIDDLESEX COUNTIES WILL EXPIRE AT
1145 PM EDT...
        
The storm which prompted the warning is moving out of the area.
Therefore, the warning will be allowed to expire.

LAT...LON 4054 7451 4075 7450 4076 7436 4067 7446
      4066 7445 4067 7441 4065 7440 4060 7446
      4061 7431 4059 7428 4060 7421 4056 7421
      4055 7425 4051 7426
TIME...MOT...LOC 0338Z 272DEG 25KT 4065 7435 

$$

Fitzsimmons

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 8:07 PM EDTSpecial Marine WarningPHI53 min
Jul 2, 8:09 PM EDTAreal Flood AdvisoryPHIMorris4 hr
Jul 2, 9:07 PM EDTSpecial Marine WarningPHI98 min
Jul 2, 9:46 PM EDTSpecial Marine WarningPHI59 min
Jul 2, 10:39 PM EDTSpecial Marine WarningPHI66 min
Jul 2, 11:19 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer41 min
Jul 2, 11:24 PM EDTAreal Flood AdvisoryPHIMorris2 hr
Jul 3, 12:32 AM EDTSpecial Weather StatementPHIBurlington28 min
Jul 3, 2:15 AM EDTSpecial Weather StatementPHIOcean15 min
Jul 3, 2:17 AM EDTSpecial Marine WarningPHI58 min
Jul 3, 7:57 PM EDTSpecial Marine WarningPHI2 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2023Every 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.