Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 193, NWS Philadelphia/Mount Holly

July 2, 20194 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 2, 2019, 7:46 PM EDT for 4 counties in New Jersey. It was in force for 18 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, 2019, 7:46 PM EDT (23:46 UTC)
Expired
Jul 2, 2019, 8:04 PM EDT
In force
18 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 40 km from the middle of the area, began a volume at 23:49 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 12:00Z, 11.8 hours before the alert went out and 155 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 12:00Z on 2019-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2019-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1499 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
120 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

963 
WUUS51 KPHI 022346
SVRPHI
NJC021-023-025-029-030030-
/O.NEW.KPHI.SV.W.0193.190702T2346Z-190703T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
746 PM EDT Tue Jul 2 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northwestern Ocean County in southern New Jersey...
  Eastern Mercer County in central New Jersey...
  Southwestern Monmouth County in central New Jersey...
  Southwestern Middlesex County in northern New Jersey...

* Until 830 PM EDT.

* At 746 PM EDT, a severe thunderstorm was located over Cranbury, or
  12 miles southwest of New Brunswick, moving southeast 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...
  Howell, South Brunswick, Manalapan, Princeton, Jamesburg,
  Hightstown, Cranbury, Allentown, Roosevelt, Windsor, Princeton
  Meadows, East Freehold, Dayton, Six Flags Theme Park, Plainsboro
  Center, Jacksons Mills, West Freehold, Clearbrook Park, Cassville
  and Adelphia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4002 7445 4032 7472 4039 7462 4038 7462
      4037 7461 4040 7459 4041 7459 4043 7456
      4023 7414
TIME...MOT...LOC 2346Z 310DEG 22KT 4031 7454 

HAIL...<.75IN
WIND...60MPH
 
$$

Meola
1 follow-up statement
953 
WWUS51 KPHI 030004
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
804 PM EDT Tue Jul 2 2019

NJC021-023-025-029-030013-
/O.CAN.KPHI.SV.W.0193.000000T0000Z-190703T0030Z/
Ocean NJ-Mercer NJ-Monmouth NJ-Middlesex NJ-
804 PM EDT Tue Jul 2 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OCEAN...EASTERN
MERCER...SOUTHWESTERN MONMOUTH AND SOUTHWESTERN MIDDLESEX COUNTIES IS
CANCELLED...
                
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 has been cancelled.

LAT...LON 4002 7445 4032 7472 4039 7462 4038 7462
      4037 7461 4040 7459 4041 7459 4043 7456
      4023 7414
TIME...MOT...LOC 0002Z 310DEG 22KT 4024 7443 

$$

Meola

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 5:27 PM EDTSpecial Marine WarningPHI48 min
Jul 2, 5:51 PM EDTSevere Thunderstorm WarningPHIMonmouth24 min
Jul 2, 5:54 PM EDTSpecial Marine WarningPHI66 min
Jul 2, 7:03 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Middlesex, Somerset42 min
Jul 2, 7:27 PM EDTSevere Thunderstorm WarningPHIGloucester, Salem48 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2019Every severe thunderstorm warning in 2019

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.