Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 34, NWS Philadelphia/Mount Holly

April 13, 20208 counties in New Jersey; Kent County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 13, 2020, 3:40 PM EDT for 8 counties in New Jersey; Kent County, Delaware. It was in force for 65 min. 3 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: Apr 13, 2020, 3:40 PM EDT (19:40 UTC)
Expired: Apr 13, 2020, 4:45 PM EDT
In force: 65 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Kent County, DE, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Ocean County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 52 km from the middle of the area, began a volume at 19:39 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.

What was reported inside it

Time	Report	Where	Remark
Apr 13, 3:44 PM EDT	TSTM WND DMG	1 Nw Pilesgrove Twp, NJ	LARGE LIMB DOWN ON POINTERS AUBURN ROAD. TIME ESTIMATED FROM RADAR.
Apr 13, 4:33 PM EDT	TSTM WND DMG	Ocean Township, NJ	DOWNED WIRES ON US 9, ALL LANES CLOSED AND DETOURED.
Apr 13, 4:36 PM EDT	TSTM WND GST 59	Tuckerton, NJ	CORRECTS PREVIOUS TSTM WND GST REPORT FROM TUCKERTON. FOR TIME.

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
Apr 13, 11:33 AM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 7.7 hours before the alert went out and 189 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 702 m above ground
0-6 km bulk shear: 83 kt
0-1 km storm-relative helicity: 570 m²/s²
0-3 km storm-relative helicity: 696 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

367 
WUUS51 KPHI 131940
SVRPHI
DEC001-NJC001-005-007-009-011-015-029-033-132045-
/O.NEW.KPHI.SV.W.0034.200413T1940Z-200413T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
340 PM EDT Mon Apr 13 2020

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northeastern Kent County in central Delaware...
  Atlantic County in southern New Jersey...
  Cumberland County in southern New Jersey...
  Salem County in southern New Jersey...
  Ocean County in southern New Jersey...
  Camden County in southern New Jersey...
  Gloucester County in southern New Jersey...
  Northern Cape May County in southern New Jersey...
  Burlington County in southern New Jersey...

* Until 445 PM EDT.

* At 340 PM EDT, severe thunderstorms were located along a line
  extending from Swedesboro to Quinton to near Woodland Beach, moving
  east at 60 mph.

  HAZARD...70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Toms River, Vineland, Atlantic City, Millville, Bridgeton, Ocean
  City, Cumberland, Cherry Hill, Evesham, Chester, Deptford,
  Voorhees, Medford, West Deptford, Barnegat, Pleasantville,
  Glassboro, Lindenwold, Hammonton and Bellmawr.

People attending Covid-19 Drive through testing should seek safe
shelter immediately!

This includes the following highways...
 Atlantic City Expressway between mile markers 0 and 44.
 Garden State Parkway between mile markers 27 and 88.
 Interstate 295 in New Jersey between mile markers 5 and 34.
 New Jersey Turnpike between exits 1 and 3.
 Interstate 76 in New Jersey near mile marker 0.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 PM EDT for central
Delaware...southern New Jersey...and southeastern Pennsylvania.

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

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

&&

LAT...LON 3974 7404 3937 7414 3927 7460 3932 7486
      3923 7490 3920 7500 3925 7549 3954 7553
      3982 7539 3996 7472 4007 7402
TIME...MOT...LOC 1940Z 259DEG 51KT 3977 7533 3956 7544 3934 7541 

HAIL...<.75IN
WIND...70MPH
 
$$

NC

2 follow-up statements

041 
WWUS51 KPHI 132020
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
420 PM EDT Mon Apr 13 2020

DEC001-NJC007-009-033-132029-
/O.CAN.KPHI.SV.W.0034.000000T0000Z-200413T2045Z/
Kent DE-Salem NJ-Camden NJ-Cape May NJ-
420 PM EDT Mon Apr 13 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KENT...SALEM...
CAMDEN AND NORTHERN CAPE MAY COUNTIES IS CANCELLED...

The storms which prompted the warning have  moved out of the warned 
area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 600 PM EDT for southern New
Jersey.

LAT...LON 3937 7414 3932 7486 3920 7500 3928 7528
      3938 7511 3948 7507 3961 7488 3977 7452
      4007 7402
TIME...MOT...LOC 2019Z 259DEG 51KT 3987 7466 3966 7477 3944 7474 

$$

NJC001-005-011-015-029-132045-
/O.CON.KPHI.SV.W.0034.000000T0000Z-200413T2045Z/
Atlantic NJ-Cumberland NJ-Ocean NJ-Gloucester NJ-Burlington NJ-
420 PM EDT Mon Apr 13 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR ATLANTIC...EASTERN CUMBERLAND...CENTRAL OCEAN...SOUTHEASTERN
GLOUCESTER AND SOUTHEASTERN BURLINGTON COUNTIES...

At 419 PM EDT, severe thunderstorms were located along a line
extending from near Tabernacle to Hammonton to Mays Landing, moving
east at 60 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Toms River, Vineland, Atlantic City, Millville, Cumberland, Barnegat,
Pleasantville, Hammonton, Beachwood, Ventnor City, Brigantine,
Northfield, Absecon, Buena, Egg Harbor City, Laurel Lake, Tuckerton,
Seaside Heights, Weymouth and Estell Manor.

This includes the following highways...
 Atlantic City Expressway between mile markers 0 and 29.
 Garden State Parkway between mile markers 32 and 81.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 PM EDT for southern New
Jersey.

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

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

&&

LAT...LON 3937 7414 3932 7486 3920 7500 3928 7528
      3938 7511 3948 7507 3961 7488 3977 7452
      4007 7402
TIME...MOT...LOC 2019Z 259DEG 51KT 3987 7466 3966 7477 3944 7474 

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

NC

055 
WWUS51 KPHI 132040
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
440 PM EDT Mon Apr 13 2020

NJC001-005-011-015-029-132048-
/O.EXP.KPHI.SV.W.0034.000000T0000Z-200413T2045Z/
Atlantic NJ-Cumberland NJ-Ocean NJ-Gloucester NJ-Burlington NJ-
440 PM EDT Mon Apr 13 2020

...THE SEVERE THUNDERSTORM WARNING FOR ATLANTIC...EASTERN
CUMBERLAND...CENTRAL OCEAN...SOUTHEASTERN GLOUCESTER AND SOUTHEASTERN
BURLINGTON COUNTIES WILL EXPIRE AT 445 PM EDT...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.  However gusty winds are still possible with
these thunderstorms.

A Tornado Watch remains in effect until 600 PM EDT for southern New
Jersey.

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 3937 7414 3932 7486 3920 7500 3928 7528
      3938 7511 3948 7507 3961 7488 3977 7452
      4007 7402
TIME...MOT...LOC 2038Z 259DEG 51KT 3987 7466 3966 7477 3944 7474 

$$

NC

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 3:43 AM EDT	Coastal Flood Statement	PHI	Ocean	17 hr
Apr 13, 6:17 AM EDT	Special Weather Statement	PHI	Gloucester, Salem	28 min
Apr 13, 6:48 AM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Salem	4 hr
Apr 13, 8:03 AM EDT	Areal Flood Advisory	PHI	Burlington, Hunterdon, Mercer, Middlesex, Somerset	4 hr
Apr 13, 8:36 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Middlesex, Morris, Somerset	4 hr
Apr 13, 10:29 AM EDT	Areal Flood Warning	PHI	Hunterdon, Somerset	7 hr
Apr 13, 1:01 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	4 hr
Apr 13, 2:37 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer	2 hr
Apr 13, 2:41 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	64 min
Apr 13, 3:52 PM EDT	Special Marine Warning	PHI		23 min
Apr 13, 4:13 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	31 min
Apr 13, 6:32 PM EDT	Small Craft Advisory	PHI		21 hr
Apr 13, 5:12 AM EDT	Special Weather Statement	PHI	Kent, New Castle	33 min
Apr 13, 5:41 AM EDT	Special Weather Statement	PHI	New Castle	34 min
Apr 13, 5:44 AM EDT	Special Weather Statement	PHI	Kent, Sussex	31 min
Apr 13, 6:11 AM EDT	Areal Flood Advisory	PHI	New Castle	4 hr
Apr 13, 6:42 AM EDT	Areal Flood Advisory	PHI	Kent, New Castle	4 hr
Apr 13, 11:25 AM EDT	River Flood Warning	PHI	New Castle	4 hr
Apr 13, 12:13 PM EDT	River Flood Warning	PHI	New Castle	3 hr
Apr 13, 3:22 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	38 min
Apr 13, 3:26 PM EDT	Tornado Warning	PHI	Kent	13 min
Apr 13, 3:45 PM EDT	Tornado Warning	PHI	Kent	15 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2020 Severe Thunderstorm Warnings in Delaware, 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.