Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 87, NWS Philadelphia/Mount Holly

June 14, 20215 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 14, 2021, 10:07 PM EDT for 5 counties in New Jersey. It was in force for 53 min. 1 report 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, 10:07 PM EDT (02:07 UTC)
Expired
Jun 14, 2021, 11:00 PM EDT
In force
53 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Ocean County, NJ

What was reported inside it

TimeReportWhereRemark
Jun 14, 10:49 PM EDTTSTM WND DMG2 Ne Malaga, NJDOWNED WIRES NEAR MARSHALL MILL ROAD. 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
Jun 14, 7:29 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 2.1 hours before the alert went out and 204 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°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.

404 
WUUS51 KPHI 150207
SVRPHI
NJC001-005-007-015-029-150300-
/O.NEW.KPHI.SV.W.0087.210615T0207Z-210615T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1007 PM EDT Mon Jun 14 2021

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northwestern Atlantic County in southern New Jersey...
  Northern Ocean County in southern New Jersey...
  Camden County in southern New Jersey...
  Gloucester County in southern New Jersey...
  Central Burlington County in southern New Jersey...

* Until 1100 PM EDT.

* At 1006 PM EDT, severe thunderstorms were located along a line
  extending from Browns Mills to near Medford to Marlton Lakes to
  Turnersville, 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, Evesham, Medford, Glassboro, Lindenwold, Hammonton,
  Pitman, Clayton, Berlin, Tabernacle, Shamong, Presidential Lakes
  Estates, Lakehurst, Swedesboro, Chesilhurst, Newfield, Pemberton,
  Wrightstown, Atsion and Leisuretowne.

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

This includes the following highways...
 New Jersey Turnpike near exit 2.
 Garden State Parkway between mile markers 81 and 89.
 Atlantic City Expressway between mile markers 28 and 44.

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 3976 7445 3955 7500 3967 7520 3966 7521
      3974 7535 3983 7498 4008 7460 4005 7406
TIME...MOT...LOC 0206Z 275DEG 19KT 3998 7459 3986 7480 3980 7492 3976
7505

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

Staarmann
1 follow-up statement
950 
WWUS51 KPHI 150231
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1031 PM EDT Mon Jun 14 2021

NJC001-005-007-015-029-150300-
/O.CON.KPHI.SV.W.0087.000000T0000Z-210615T0300Z/
Atlantic NJ-Ocean NJ-Camden NJ-Gloucester NJ-Burlington NJ-
1031 PM EDT Mon Jun 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM EDT
FOR NORTHWESTERN ATLANTIC...NORTHERN OCEAN...SOUTHEASTERN CAMDEN...
SOUTHEASTERN GLOUCESTER AND SOUTHEASTERN BURLINGTON COUNTIES...

At 1030 PM EDT, severe thunderstorms were located along a line
extending from Cedar Glen Lakes to near Tabernacle to Shamong to near
Chesilhurst, 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, Glassboro, Hammonton, Clayton, Tabernacle, Shamong,
Presidential Lakes Estates, Lakehurst, Chesilhurst, Newfield,
Franklinville, Sicklerville, Leisure Village, Atsion, Holiday City
South, Pleasant Plains, Cedar Glen West, Chatsworth, Leisure Village
East and Atco.

This includes the following highways...
 Garden State Parkway between mile markers 81 and 89.
 Atlantic City Expressway between mile markers 28 and 40.

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 3976 7445 3955 7500 3967 7520 3984 7472
      3998 7450 4007 7442 4005 7406
TIME...MOT...LOC 0230Z 275DEG 20KT 3998 7439 3984 7462 3978 7474 3970
7487

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, 9:11 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 1 more49 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, 10:51 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, 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.