Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 15, NWS Philadelphia/Mount Holly

April 15, 20198 counties in New Jersey; Kent County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 15, 2019, 3:41 AM EDT for 8 counties in New Jersey; Kent County, Sussex County, Delaware. It was in force for 64 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: Apr 15, 2019, 3:41 AM EDT (07:41 UTC)
Expired: Apr 15, 2019, 4:45 AM EDT
In force: 64 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Kent County, DE, Sussex 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 Dover AFB radar (KDOX), 57 km from the middle of the area, began a volume at 07:45 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 15, 3:45 AM EDT	TSTM WND DMG	3 Nne Seaford, DE	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 3 NNE SEAFORD. US 13 NB & SB BETWEEN CAMP RD AND BOYCE RD IS CLOSED DUE TO WIRES DOWN. TIME ESTIMATED FROM RADAR.
Apr 15, 3:45 AM EDT	TSTM WND DMG	3 Nne Seaford, DE	US 13 NB & SB BETWEEN CAMP RD AND BOYCE RD IS CLOSED DUE TO WIRES DOWN. TIME ESTIMATED FROM RADAR.
Apr 15, 3:56 AM EDT	TSTM WND DMG	Williamstown, NJ	NUMEROUS TREES DOWN ACROSS THE TWP. TIME ESTIMATED FROM RADAR.
Apr 15, 3:59 AM EDT	TSTM WND DMG	2 N Harbeson, DE	ROOF DAMAGE TO A MOBILE HOME AND SHED. TIME ESTIMATED FROM RADAR.
Apr 15, 4:39 AM EDT	TSTM WND GST 56	4 Ese Roosevelt City, NJ	MILLER AIR PARK.
Apr 15, 4:40 AM EDT	TSTM WND GST 62	Berkeley Twp, 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
Apr 15, 1:05 AM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 7.7 hours before the alert went out and 142 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: 124 J/kg
Mixed-layer CIN: -158 J/kg
Mixed-layer LCL: 806 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 196 m²/s²
0-3 km storm-relative helicity: 209 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

280 
WUUS51 KPHI 150741
SVRPHI
DEC001-005-NJC001-005-007-009-011-015-029-033-150845-
/O.NEW.KPHI.SV.W.0015.190415T0741Z-190415T0845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
341 AM EDT MON APR 15 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Central Sussex County in southern Delaware...
  Southeastern Kent County in central Delaware...
  Atlantic County in southern New Jersey...
  Cumberland County in southern New Jersey...
  East central Salem County in southern New Jersey...
  Ocean County in southern New Jersey...
  Camden County in southern New Jersey...
  Gloucester County in southern New Jersey...
  Cape May County in southern New Jersey...
  Burlington County in southern New Jersey...

* Until 445 AM EDT.

* At 340 AM EDT, severe thunderstorms were located along a line
  extending from Deptford to 6 miles west of Fortesque to
  Bridgeville, moving east at 55 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, Bridgeton, Ocean
  City, Gloucester City, Georgetown, Cape May, Cumberland, Cherry
  Hill, Evesham, Deptford, Voorhees, Medford, Barnegat,
  Pleasantville, Glassboro, Lindenwold and Hammonton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted, act quickly and move to a
place of safety inside a sturdy structure such as a basement or small
interior room.

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.

&&

A tornado watch remains in effect until 700 AM EDT for central and
southern Delaware...southern New Jersey...and southeastern
Pennsylvania.

LAT...LON 3962 7415 3941 7431 3919 7462 3891 7486
      3892 7500 3881 7507 3866 7505 3869 7567
      3920 7537 3905 7537 3893 7529 3881 7514
      3882 7507 3894 7499 3915 7492 3919 7508
      3916 7515 3929 7534 3989 7517 4003 7404
TIME...MOT...LOC 0740Z 264DEG 47KT 3983 7516 3923 7530 3876 7559 

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

MPS

3 follow-up statements

942 
WWUS51 KPHI 150811
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
411 AM EDT MON APR 15 2019

DEC001-NJC033-150821-
/O.CAN.KPHI.SV.W.0015.000000T0000Z-190415T0845Z/
Kent DE-Salem NJ-
411 AM EDT MON APR 15 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN KENT AND EAST
CENTRAL SALEM 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 700 AM EDT for southern
Delaware...and southern New Jersey.

LAT...LON 3962 7415 3941 7431 3919 7462 3891 7486
      3890 7501 3881 7508 3866 7505 3868 7544
      3869 7544 3893 7529 3881 7514 3882 7508
      3894 7499 3915 7492 3919 7508 3916 7515
      3927 7531 3949 7502 3990 7477 4003 7404
TIME...MOT...LOC 0811Z 267DEG 58KT 3987 7467 3927 7481 3880 7510 

$$

DEC005-NJC001-005-007-009-011-015-029-150845-
/O.CON.KPHI.SV.W.0015.000000T0000Z-190415T0845Z/
Sussex DE-Atlantic NJ-Cumberland NJ-Ocean NJ-Camden NJ-Gloucester NJ-
Cape May NJ-Burlington NJ-
411 AM EDT MON APR 15 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM EDT
FOR NORTHEASTERN SUSSEX...ATLANTIC...CUMBERLAND...OCEAN...
SOUTHEASTERN CAMDEN...SOUTHEASTERN GLOUCESTER...CAPE MAY AND
SOUTHEASTERN BURLINGTON COUNTIES...

At 411 AM EDT, severe thunderstorms were located along a line
extending from near Tabernacle to near Woodbine to Cape Henlopen
State Park, moving east at 65 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, Ocean City,
Georgetown, Cape May, Cumberland, Barnegat, Pleasantville, Hammonton,
Beachwood, Somers Point, Ventnor City, Brigantine, Northfield,
Absecon, Tabernacle, Shamong and Margate City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.

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.

&&

A tornado watch remains in effect until 700 AM EDT for southern
Delaware...and southern New Jersey.

LAT...LON 3962 7415 3941 7431 3919 7462 3891 7486
      3890 7501 3881 7508 3866 7505 3868 7544
      3869 7544 3893 7529 3881 7514 3882 7508
      3894 7499 3915 7492 3919 7508 3916 7515
      3927 7531 3949 7502 3990 7477 4003 7404
TIME...MOT...LOC 0811Z 267DEG 58KT 3987 7467 3927 7481 3880 7510 

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

MPS

890 
WWUS51 KPHI 150825
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
425 AM EDT MON APR 15 2019

DEC005-NJC007-015-150835-
/O.CAN.KPHI.SV.W.0015.000000T0000Z-190415T0845Z/
Sussex DE-Camden NJ-Gloucester NJ-
425 AM EDT MON APR 15 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SUSSEX...
SOUTHEASTERN CAMDEN AND SOUTHEASTERN GLOUCESTER 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 700 AM EDT for southern New
Jersey.

LAT...LON 3962 7415 3941 7431 3919 7462 3891 7486
      3893 7499 3915 7492 3919 7508 3916 7515
      3927 7531 3947 7491 3986 7465 4003 7404
TIME...MOT...LOC 0825Z 264DEG 47KT 3989 7444 3929 7458 3882 7487 

$$

NJC001-005-009-011-029-150845-
/O.CON.KPHI.SV.W.0015.000000T0000Z-190415T0845Z/
Atlantic NJ-Cumberland NJ-Ocean NJ-Cape May NJ-Burlington NJ-
425 AM EDT MON APR 15 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 AM EDT
FOR ATLANTIC...SOUTHEASTERN CUMBERLAND...CENTRAL OCEAN...CAPE MAY AND
SOUTHEASTERN BURLINGTON COUNTIES...

At 425 AM EDT, severe thunderstorms were located along a line
extending from Old Halfway to Ocean City to 8 miles south of Cape
May, moving east at 55 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, Ocean City, Cape May,
Cumberland, Barnegat, Pleasantville, Hammonton, Beachwood, Somers
Point, Ventnor City, Brigantine, Northfield, Absecon, Shamong,
Margate City, Egg Harbor City and North Wildwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.

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.

&&

A tornado watch remains in effect until 700 AM EDT for southern New
Jersey.

LAT...LON 3962 7415 3941 7431 3919 7462 3891 7486
      3893 7499 3915 7492 3919 7508 3916 7515
      3927 7531 3947 7491 3986 7465 4003 7404
TIME...MOT...LOC 0825Z 264DEG 47KT 3989 7444 3929 7458 3882 7487 

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

MPS

766 
WWUS51 KPHI 150837
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
437 AM EDT MON APR 15 2019

NJC001-005-009-011-029-150846-
/O.EXP.KPHI.SV.W.0015.000000T0000Z-190415T0845Z/
Atlantic NJ-Cumberland NJ-Ocean NJ-Cape May NJ-Burlington NJ-
437 AM EDT MON APR 15 2019

...THE SEVERE THUNDERSTORM WARNING FOR ATLANTIC...SOUTHEASTERN
CUMBERLAND...CENTRAL OCEAN...CAPE MAY AND SOUTHEASTERN BURLINGTON
COUNTIES WILL EXPIRE AT 445 AM 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, frequent lightning, and 
heavy rain are still possible with these thunderstorms.

A tornado watch remains in effect until 700 AM 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
in Mount Holly NJ.

LAT...LON 3962 7415 3941 7431 3919 7462 3891 7486
      3893 7499 3915 7492 3919 7508 3916 7515
      3927 7531 3947 7491 3986 7465 4003 7404
TIME...MOT...LOC 0836Z 258DEG 65KT 3960 7449 3921 7463 3891 7484 

$$

MPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 12:31 AM EDT	Marine Dense Fog Advisory	PHI		5 hr
Apr 15, 2:34 AM EDT	Special Weather Statement	PHI	Warren	41 min
Apr 15, 2:46 AM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	44 min
Apr 15, 2:47 AM EDT	Special Marine Warning	PHI		58 min
Apr 15, 3:00 AM EDT	Areal Flood Advisory	PHI	Sussex, Warren	4 hr
Apr 15, 3:03 AM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	20 min
Apr 15, 3:07 AM EDT	Severe Thunderstorm Warning	PHI	Camden, Cumberland, Gloucester, Salem	38 min
Apr 15, 3:08 AM EDT	Special Marine Warning	PHI		67 min
Apr 15, 3:11 AM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Sussex, Warren	49 min
Apr 15, 3:19 AM EDT	Tornado Warning	PHI	Burlington, Camden, Gloucester, Salem	26 min
Apr 15, 3:19 AM EDT	Wind Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more	18 hr
Apr 15, 3:27 AM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Morris, Somerset	32 min
Apr 15, 3:39 AM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 2 more	37 min
Apr 15, 3:42 AM EDT	Special Marine Warning	PHI		63 min
Apr 15, 3:57 AM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Morris, Somerset	13 min
Apr 15, 3:59 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 7 more	4 hr
Apr 15, 4:16 AM EDT	Special Marine Warning	PHI		59 min
Apr 15, 4:40 AM EDT	Special Marine Warning	PHI		65 min
Apr 15, 4:47 AM EDT	Special Weather Statement	PHI	Atlantic	28 min
Apr 15, 5:07 AM EDT	Special Marine Warning	PHI		53 min
Apr 15, 5:30 AM EDT	Coastal Flood Statement	PHI	Ocean	7 hr
Apr 15, 6:59 AM EDT	Areal Flood Warning	PHI	Hunterdon	4 hr
Apr 15, 3:21 AM EDT	Tornado Warning	PHI	Kent	24 min
Apr 15, 3:28 AM EDT	Severe Thunderstorm Warning	PHI	Sussex	47 min
Apr 15, 3:31 AM EDT	Tornado Warning	PHI	Sussex	29 min
Apr 15, 3:36 AM EDT	Tornado Warning	PHI	Kent, Sussex	24 min
Apr 15, 4:19 AM EDT	Special Weather Statement	PHI	Sussex	26 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2019 Severe Thunderstorm Warnings in Delaware, 2019 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.