Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 61, NWS Philadelphia/Mount Holly

June 3, 2020Atlantic County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 3, 2020, 8:32 PM EDT for Atlantic County, Ocean County, New Jersey. It was in force for 13 min. 5 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 3, 2020, 8:32 PM EDT (00:32 UTC)
Expired: Jun 3, 2020, 8:45 PM EDT
In force: 13 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Atlantic County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 64 km from the middle of the area, began a volume at 00:31 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 3, 8:33 PM EDT	MARINE TSTM WIND 42	4 Se Mystic Island, NJ	WXFLOW SENSOR.
Jun 3, 8:35 PM EDT	MARINE TSTM WIND 46	4 Se Mystic Island, NJ	WXFLOW SENSOR.
Jun 3, 8:36 PM EDT	MARINE TSTM WIND 46	5 Se Mystic Island, NJ	HADS SENSOR.
Jun 3, 8:37 PM EDT	TSTM WND DMG	Beach Haven, NJ	DOWNED POWER LINES REPORTED.
Jun 3, 8:50 PM EDT	MARINE TSTM WIND 41	2 Sw Beach Haven, NJ

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 3, 3:52 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.5 hours before the alert went out and 191 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: 226 J/kg
Mixed-layer CIN: -210 J/kg
Mixed-layer LCL: 2075 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

584 
WUUS51 KPHI 040032
SVRPHI
NJC001-029-040045-
/O.NEW.KPHI.SV.W.0061.200604T0032Z-200604T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
832 PM EDT Wed Jun 3 2020

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southeastern Atlantic County in southern New Jersey...
  Southeastern Ocean County in southern New Jersey...

* Until 845 PM EDT.

* At 831 PM EDT, severe thunderstorms were located along a line
  extending from near Surf City to near Brigantine to near Ocean
  City, moving southeast at 50 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Atlantic City, Barnegat, Brigantine, Tuckerton, Surf City, Beach
  Haven West, Mystic Island, Manahawkin, Waretown and Ocean Acres.

This includes the following highways...
 Atlantic City Expressway near mile marker 0.
 Garden State Parkway between mile markers 65 and 72.

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.

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across southern New Jersey. SEEK SHELTER NOW inside a 
sturdy structure and stay away from windows! Torrential rainfall is 
occurring with these storms, and may lead to flooding. Do not drive 
your vehicle through flooded roadways.

&&

LAT...LON 3955 7399 3932 7417 3922 7427 3910 7447
      3903 7453 3905 7459 3986 7421 3981 7398
TIME...MOT...LOC 0031Z 292DEG 43KT 3971 7418 3947 7431 3927 7454 

HAIL...1.00IN
WIND...70MPH
 
$$

Fitzsimmons

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 8:03 PM EDT	Special Marine Warning	PHI		87 min
Jun 3, 8:42 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	16 min
Jun 4, 6:06 AM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more	22 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 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.