Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 202, NWS Philadelphia/Mount Holly

August 3, 20206 counties in New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 3, 2020, 7:56 PM EDT for 6 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 52 min. 6 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: Aug 3, 2020, 7:56 PM EDT (23:56 UTC)
Expired: Aug 3, 2020, 8:48 PM EDT
In force: 52 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Burlington County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Somerset County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 57 km from the middle of the area, began a volume at 23:58 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
Aug 3, 8:10 PM EDT	TSTM WND DMG	1 Sse Princeton Junctio, NJ	DOWNED TREES AND WIRES NEAR HENDRICKSON DRIVE IN WEST WINDSOR. TIME ESTIMATED FROM RADAR.
Aug 3, 8:15 PM EDT	TSTM WND DMG	Monroe, NJ	TREE DOWN IN MONROE.
Aug 3, 8:32 PM EDT	TSTM WND DMG	1 Nw Sea Bright, NJ	DOWNED TREES AND WIRES NEAR HARTSHORNE LANE IN RUMSON. TIME ESTIMATED FROM RADAR.
Aug 3, 8:42 PM EDT	MARINE TSTM WIND 43	8 S Seagate, NY	A MARINE THUNDERSTORM WIND GUST OF 37 KNOTS WAS REPORTED AT SANDY HOOK NORTH MESONET STATION
Aug 3, 8:42 PM EDT	MARINE TSTM WIND 43	Sandy Hook, NJ
Aug 3, 8:45 PM EDT	TSTM WND DMG	1 Ssw Hazelton, NJ	DOWNED TREES AND WIRES NEAR HILL ROAD AND LINCOLN AVENUE IN ISELIN. TIME ESTIMATED FROM 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, 11.9 hours before the alert went out and 123 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: 185 J/kg
Mixed-layer CIN: -137 J/kg
Mixed-layer LCL: 1124 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted.

318 
WUUS51 KPHI 032356
SVRPHI
NJC005-021-023-025-029-035-PAC017-040100-
/O.NEW.KPHI.SV.W.0202.200803T2356Z-200804T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
756 PM EDT Mon Aug 3 2020

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...
  North central Burlington County in southern New Jersey...
  Southeastern Somerset County in northern New Jersey...
  Monmouth County in central New Jersey...
  Middlesex County in northern New Jersey...
  Eastern Bucks County in southeastern Pennsylvania...

* Until 900 PM EDT.

* At 755 PM EDT, a severe thunderstorm was located over Crosswicks,
  or 9 miles southeast of Trenton, moving northeast at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Trenton, New Brunswick, Perth Amboy, Sandy Hook, Somerset, Edison,
  Middletown, Old Bridge, East Brunswick, South Brunswick,
  Sayreville, North Brunswick, Marlboro, Manalapan, Carteret, Tinton
  Falls, Holmdel, Princeton, Red Bank and Keansburg.

This includes the following highways...
 New Jersey Turnpike between exits 7 and 13.
 Interstate 195 in New Jersey between mile markers 0 and 19.
 Interstate 295 in New Jersey between mile markers 56 and 67.
 Interstate 287 in New Jersey between mile markers 0 and 8.
 Garden State Parkway between mile markers 109 and 134.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Protecting yourself from immediate threats to life and safety shall
take priority.  Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.

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

&&

LAT...LON 4038 7397 4002 7461 4018 7479 4060 7444
      4060 7421 4056 7421 4055 7425 4050 7426
      4050 7428 4047 7427 4044 7420 4046 7418
      4045 7413 4041 7399 4048 7402 4048 7401
      4043 7397
TIME...MOT...LOC 2355Z 221DEG 37KT 4014 7462 

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

Robertson

2 follow-up statements

665 
WWUS51 KPHI 040025
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
825 PM EDT Mon Aug 3 2020

NJC005-021-029-PAC017-040034-
/O.CAN.KPHI.SV.W.0202.000000T0000Z-200804T0100Z/
Ocean NJ-Mercer NJ-Burlington NJ-Bucks PA-
825 PM EDT Mon Aug 3 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OCEAN...EASTERN
MERCER...NORTH CENTRAL BURLINGTON AND EASTERN BUCKS COUNTIES IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4037 7399 4021 7426 4034 7463 4039 7462
      4060 7444 4060 7421 4056 7421 4055 7425
      4050 7426 4050 7428 4047 7427 4044 7420
      4046 7418 4041 7398 4042 7398 4048 7402
      4048 7401 4042 7397
TIME...MOT...LOC 0024Z 221DEG 37KT 4037 7436 

$$

NJC023-025-035-040100-
/O.CON.KPHI.SV.W.0202.000000T0000Z-200804T0100Z/
Somerset NJ-Monmouth NJ-Middlesex NJ-
825 PM EDT Mon Aug 3 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR SOUTHEASTERN SOMERSET...NORTHEASTERN MONMOUTH AND MIDDLESEX
COUNTIES...

At 824 PM EDT, a severe thunderstorm was located over Old Bridge, or
9 miles southeast of New Brunswick, moving northeast at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
New Brunswick, Perth Amboy, Sandy Hook, Somerset, Edison, Middletown,
Old Bridge, East Brunswick, South Brunswick, Sayreville, North
Brunswick, Marlboro, Manalapan, Carteret, Tinton Falls, Holmdel, Red
Bank, Matawan, Jamesburg and Highlands.

This includes the following highways...
 New Jersey Turnpike between exits 9 and 13.
 Interstate 287 in New Jersey between mile markers 0 and 8.
 Garden State Parkway between mile markers 109 and 134.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Protecting yourself from immediate threats to life and safety shall
take priority.  Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.

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

&&

LAT...LON 4037 7399 4021 7426 4034 7463 4039 7462
      4060 7444 4060 7421 4056 7421 4055 7425
      4050 7426 4050 7428 4047 7427 4044 7420
      4046 7418 4041 7398 4042 7398 4048 7402
      4048 7401 4042 7397
TIME...MOT...LOC 0024Z 221DEG 37KT 4037 7436 

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

Robertson

261 
WWUS51 KPHI 040048
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
848 PM EDT Mon Aug 3 2020

NJC023-025-035-040058-
/O.CAN.KPHI.SV.W.0202.000000T0000Z-200804T0100Z/
Somerset NJ-Monmouth NJ-Middlesex NJ-
848 PM EDT Mon Aug 3 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SOMERSET...
NORTHEASTERN MONMOUTH AND MIDDLESEX COUNTIES IS CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has 
been cancelled. However gusty winds are still possible with this 
thunderstorm.

LAT...LON 4037 7399 4021 7426 4034 7463 4039 7462
      4060 7444 4060 7421 4056 7421 4055 7425
      4050 7426 4050 7428 4047 7427 4044 7420
      4046 7418 4041 7398 4042 7398 4048 7402
      4048 7401 4042 7397
TIME...MOT...LOC 0047Z 221DEG 37KT 4056 7414 

$$

Robertson

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 8:09 PM EDT	Special Marine Warning	PHI		36 min
Aug 2, 8:53 PM EDT	Rip Current Statement	PHI	Atlantic, Cape May, Monmouth, Ocean	51 hr
Aug 2, 8:53 PM EDT	High Surf Advisory	PHI	Atlantic, Cape May, Monmouth, Ocean	51 hr
Aug 2, 9:01 PM EDT	Special Weather Statement	PHI	Atlantic	44 min
Aug 2, 10:18 PM EDT	Special Weather Statement	PHI	Warren	42 min
Aug 2, 11:42 PM EDT	Special Weather Statement	PHI	Cumberland	33 min
Aug 2, 11:49 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more	41 min
Aug 3, 5:08 AM EDT	Tropical Storm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more	39 hr
Aug 3, 4:26 PM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more	38 hr
Aug 3, 6:03 PM EDT	Special Marine Warning	PHI		12 min
Aug 3, 6:05 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland	22 min
Aug 3, 6:19 PM EDT	Special Weather Statement	PHI	Salem	26 min
Aug 3, 6:32 PM EDT	Special Weather Statement	PHI	Camden, Cumberland, Gloucester, Salem	28 min
Aug 3, 6:48 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	27 min
Aug 3, 6:59 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	31 min
Aug 3, 7:02 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	28 min
Aug 3, 7:12 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Monmouth, Ocean	48 min
Aug 3, 7:20 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Mercer, Monmouth	40 min
Aug 3, 7:43 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Monmouth, Ocean	62 min
Aug 3, 7:52 PM EDT	Special Marine Warning	PHI		73 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2020 Severe Thunderstorm Warnings in Pennsylvania, 2020 Every severe thunderstorm warning in 2020

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.