Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 84, NWS Philadelphia/Mount Holly

June 14, 20217 counties in New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 14, 2021, 9:11 PM EDT for 7 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 49 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 14, 2021, 9:11 PM EDT (01:11 UTC)
Expired
Jun 14, 2021, 10:00 PM EDT
In force
49 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Bucks County, PA

What was reported inside it

TimeReportWhereRemark
Jun 14, 9:11 PM EDTTSTM WND DMG1 N Roosevelt, NJDOWNED TREES AND WIRES NEAR WINDSOR ROAD. TIME ESTIMATED FROM RADAR.
Jun 14, 9:15 PM EDTTSTM WND DMG1 Nne Bordentown, NJWIRES DOWN AT THE POINTE BREEZE APARTMENT COMPLEX IN BORDENTOWN, TIME ESTIMATED FROM RADAR.
Jun 14, 9:15 PM EDTTSTM WND DMGFlorence, NJWIRES DOWN IN FLORENCE ON 6TH AVENUE, TIME ESTIMATED FROM RADAR.
Jun 14, 9:20 PM EDTTSTM WND DMG2 N Mount Laurel, NJAN MPING REPORT OF LARGE TREE LIMBS OR POWER LINES DOWN. TIME ESTIMATED FROM RADAR.
Jun 14, 9:35 PM EDTHAIL 0.53 N Mount Laurel, NJMPING REPORT. TIME ESTIMATED FROM RADAR.

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.

IssuedProductOfficeLasted
Jun 14, 2:06 PM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 1.2 hours before the alert went out and 190 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 00:00Z on 2021-06-15Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2021-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 square meters per square second.1939587897Sfc1 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
1380 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

359 
WUUS51 KPHI 150111
SVRPHI
NJC005-007-015-021-023-025-029-PAC017-150200-
/O.NEW.KPHI.SV.W.0084.210615T0111Z-210615T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
911 PM EDT Mon Jun 14 2021

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northwestern Ocean County in southern New Jersey...
  Central Camden County in southern New Jersey...
  Southeastern Mercer County in central New Jersey...
  North central Gloucester County in southern New Jersey...
  Burlington County in southern New Jersey...
  Southern Monmouth County in central New Jersey...
  Southwestern Middlesex County in northern New Jersey...
  Southeastern Bucks County in southeastern Pennsylvania...

* Until 1000 PM EDT.

* At 911 PM EDT, severe thunderstorms were located along a line
  extending from near Imlaystown to Camden, moving east at 30 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...
  Philadelphia, Toms River, Trenton, Camden, Long Branch, Gloucester
  City, Lakewood, Cherry Hill, Bensalem, Jackson, Howell, Evesham,
  Mount Laurel, Manalapan, Willingboro, Voorhees, Medford, Tinton
  Falls, Lindenwold and Lumberton.

People at the Burlington County Mega Site should seek safe shelter
immediately!

This includes the following highways...
 New Jersey Turnpike between exits 3 and 8A.
 Pennsylvania Turnpike between mile markers 355 and 359.
 Interstate 95 in Pennsylvania between mile markers 34 and 40.
 Interstate 76 in New Jersey between mile markers 0 and 3.
 Interstate 195 in New Jersey between mile markers 0 and 34.
 Interstate 295 in New Jersey between mile markers 22 and 64.
 Interstate 676 in New Jersey between mile markers 0 and 4.
 Garden State Parkway between mile markers 98 and 106.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with these storms. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.

&&

LAT...LON 4028 7399 4002 7423 3977 7482 3985 7521
      3988 7518 3990 7513 3994 7514 3997 7510
      3998 7507 4002 7504 4005 7498 4006 7498
      4010 7496 4032 7455
TIME...MOT...LOC 0111Z 263DEG 24KT 4020 7453 3992 7513 

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

CMS
3 follow-up statements
801 
WWUS51 KPHI 150130
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
930 PM EDT Mon Jun 14 2021

NJC005-007-015-021-023-025-029-PAC017-150200-
/O.CON.KPHI.SV.W.0084.000000T0000Z-210615T0200Z/
Ocean NJ-Camden NJ-Mercer NJ-Gloucester NJ-Burlington NJ-Monmouth NJ-
Middlesex NJ-Bucks PA-
930 PM EDT Mon Jun 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT
FOR NORTHWESTERN OCEAN...CENTRAL CAMDEN...SOUTHEASTERN MERCER...NORTH
CENTRAL GLOUCESTER...BURLINGTON...SOUTHERN MONMOUTH...SOUTH CENTRAL
MIDDLESEX AND SOUTHEASTERN BUCKS COUNTIES...

At 930 PM EDT, severe thunderstorms were located along a line
extending from near Manalapan to Ramblewood, moving east at 30 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Wind damage to roofs, 
         siding, trees, and power lines is possible.

Locations impacted include...
Philadelphia, Toms River, Camden, Long Branch, Gloucester City,
Lakewood, Cherry Hill, Jackson, Howell, Evesham, Mount Laurel,
Manalapan, Willingboro, Voorhees, Medford, Tinton Falls, Lindenwold,
Lumberton, Florence and Bellmawr.

People at the Burlington County Mega Site should seek safe shelter
immediately!

This includes the following highways...
 New Jersey Turnpike between exits 3 and 8.
 Pennsylvania Turnpike between mile markers 357 and 359.
 Interstate 95 in Pennsylvania between mile markers 34 and 40.
 Interstate 76 in New Jersey between mile markers 0 and 3.
 Interstate 195 in New Jersey between mile markers 1 and 34.
 Interstate 295 in New Jersey between mile markers 22 and 60.
 Interstate 676 in New Jersey between mile markers 0 and 4.
 Garden State Parkway between mile markers 98 and 106.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4028 7399 4002 7423 3977 7482 3985 7521
      3988 7518 3990 7513 3994 7514 3997 7510
      3998 7507 4002 7504 4005 7498 4006 7498
      4010 7496 4031 7436
TIME...MOT...LOC 0130Z 263DEG 24KT 4021 7437 3994 7497 

HAIL...1.00IN
WIND...60MPH
 
$$

CMS
945 
WWUS51 KPHI 150139
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
939 PM EDT Mon Jun 14 2021

NJC021-023-PAC017-150149-
/O.CAN.KPHI.SV.W.0084.000000T0000Z-210615T0200Z/
Mercer NJ-Middlesex NJ-Bucks PA-
939 PM EDT Mon Jun 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MERCER...SOUTH
CENTRAL MIDDLESEX AND SOUTHEASTERN BUCKS COUNTIES IS CANCELLED...

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

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
southern and central New Jersey...and southeastern Pennsylvania.

LAT...LON 4028 7399 4002 7423 3977 7482 3985 7521
      3990 7513 3994 7514 4002 7491 4016 7467
      4014 7459 4018 7461 4018 7457 4027 7441
      4030 7425
TIME...MOT...LOC 0139Z 264DEG 22KT 4022 7431 4006 7467 3992 7489 

$$

NJC005-007-015-025-029-150200-
/O.CON.KPHI.SV.W.0084.000000T0000Z-210615T0200Z/
Ocean NJ-Camden NJ-Gloucester NJ-Burlington NJ-Monmouth NJ-
939 PM EDT Mon Jun 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT
FOR NORTHWESTERN OCEAN...CENTRAL CAMDEN...NORTH CENTRAL GLOUCESTER...
NORTHERN BURLINGTON AND SOUTHERN MONMOUTH COUNTIES...

At 939 PM EDT, severe thunderstorms were located along a line
extending from West Freehold to Georgetown to near Mount Laurel,
moving east at 25 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Wind damage to roofs, 
         siding, trees, and power lines is possible.

Locations impacted include...
Toms River, Camden, Long Branch, Gloucester City, Lakewood, Cherry
Hill, Jackson, Howell, Evesham, Mount Laurel, Manalapan, Willingboro,
Voorhees, Medford, Tinton Falls, Lindenwold, Lumberton, Bellmawr,
Woodbury and Mount Holly.

People at the Burlington County Mega Site should seek safe shelter
immediately!

This includes the following highways...
 New Jersey Turnpike between exits 3 and 6, and between exits 7 and
7A.
 Interstate 76 in New Jersey between mile markers 0 and 3.
 Interstate 195 in New Jersey between mile markers 9 and 34.
 Interstate 295 in New Jersey between mile markers 22 and 56.
 Interstate 676 in New Jersey between mile markers 0 and 3.
 Garden State Parkway between mile markers 98 and 106.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4028 7399 4002 7423 3977 7482 3985 7521
      3990 7513 3994 7514 4002 7491 4016 7467
      4014 7459 4018 7461 4018 7457 4027 7441
      4030 7425
TIME...MOT...LOC 0139Z 264DEG 22KT 4022 7431 4006 7467 3992 7489 

HAIL...1.00IN
WIND...60MPH
 
$$

Staarmann
707 
WWUS51 KPHI 150153
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
953 PM EDT Mon Jun 14 2021

NJC005-007-015-025-029-150200-
/O.CON.KPHI.SV.W.0084.000000T0000Z-210615T0200Z/
Ocean NJ-Camden NJ-Gloucester NJ-Burlington NJ-Monmouth NJ-
953 PM EDT Mon Jun 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT
FOR NORTHWESTERN OCEAN...CENTRAL CAMDEN...NORTH CENTRAL GLOUCESTER...
CENTRAL BURLINGTON AND SOUTHERN MONMOUTH COUNTIES...

At 953 PM EDT, severe thunderstorms were located along a line
extending from near Collingwood Park to Pemberton to Evesham, moving
east at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Wind damage to roofs, 
         siding, trees, and power lines is possible.

Locations impacted include...
Toms River, Camden, Long Branch, Gloucester City, Lakewood, Cherry
Hill, Jackson, Howell, Evesham, Mount Laurel, Voorhees, Medford,
Tinton Falls, Lindenwold, Lumberton, Bellmawr, Woodbury, Mount Holly,
Berlin and Tabernacle.

People at the Burlington County Mega Site should seek safe shelter
immediately!

This includes the following highways...
 New Jersey Turnpike between exits 3 and 4.
 Interstate 76 in New Jersey between mile markers 0 and 3.
 Interstate 195 in New Jersey between mile markers 12 and 34.
 Interstate 295 in New Jersey between mile markers 22 and 41.
 Interstate 676 in New Jersey between mile markers 0 and 1.
 Garden State Parkway between mile markers 98 and 106.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4028 7399 4002 7423 3977 7482 3985 7521
      3990 7513 3991 7513 3992 7512 4000 7480
      4010 7468 4014 7459 4026 7438 4030 7425
TIME...MOT...LOC 0153Z 275DEG 19KT 4024 7410 3997 7469 3988 7491 

HAIL...1.00IN
WIND...60MPH
 
$$

Staarmann

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 8:08 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Middlesex, Monmouth, Somerset52 min
Jun 14, 8:34 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester41 min
Jun 14, 8:55 PM EDTSevere Thunderstorm WarningPHIGloucester50 min
Jun 14, 9:12 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 1 more74 min
Jun 14, 9:17 PM EDTFlash Flood WarningPHIBurlington, Camden3 hr
Jun 14, 9:29 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester46 min
Jun 14, 9:54 PM EDTAreal Flood AdvisoryPHIMonmouth97 min
Jun 14, 9:58 PM EDTSevere Thunderstorm WarningPHIMonmouth32 min
Jun 14, 10:01 PM EDTSpecial Marine WarningPHI89 min
Jun 14, 10:07 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Gloucester, Ocean53 min
Jun 14, 10:51 PM EDTSpecial Marine WarningPHI114 min
Jun 14, 11:07 PM EDTSpecial Marine WarningPHI113 min
Jun 14, 11:21 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Ocean39 min
Jun 14, 11:42 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cumberland, Gloucester, Salem63 min
Jun 14, 11:47 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Cape May, Cumberland, Ocean, Salem118 min
Jun 15, 12:04 AM EDTSpecial Marine WarningPHI116 min
Jun 15, 12:12 AM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Gloucester51 min
Jun 15, 1:00 AM EDTSpecial Marine WarningPHI88 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2021Severe Thunderstorm Warnings in Pennsylvania, 2021Every severe thunderstorm warning in 2021

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.