Alert archive / New Jersey / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 28, NWS Philadelphia/Mount Holly

April 26, 2016Camden County, Gloucester County, Salem County, New Jersey; New Castle County, Delaware; Delaware County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 26, 2016, 12:34 AM EDT for Camden County, Gloucester County, Salem County, New Jersey; New Castle County, Delaware; Delaware County, Pennsylvania. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 26, 2016, 12:34 AM EDT (04:34 UTC)
Expired
Apr 26, 2016, 1:15 AM EDT
In force
41 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties New Castle County, DE, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Delaware County, PA

The radar

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 04:36 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.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 4.6 hours before the alert went out and 208 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, Washington/Dulle, VA at 00:00Z on 2016-04-26Temperature 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, Washington/Dulle, VA at 00:00Z on 2016-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 square meters per square second.193958Sfc1 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
2221 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
159 m²/s²
0-3 km storm-relative helicity
291 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

564 
WUUS51 KPHI 260434
SVRPHI
DEC003-NJC007-015-033-PAC045-260515-
/O.NEW.KPHI.SV.W.0028.160426T0434Z-160426T0515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1234 AM EDT TUE APR 26 2016

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
  NORTHWESTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  NORTHWESTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  NORTHWESTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN DELAWARE COUNTY IN SOUTHEASTERN PENNSYLVANIA...

* UNTIL 115 AM EDT

* AT 1234 AM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER PENNS GROVE...
  OR NEAR WILMINGTON...MOVING EAST AT 45 MPH.

  HAZARD...QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  CHESTER...SWEDESBORO...BECKETT AND CHESTER TOWNSHIP AROUND 1245 AM 
  EDT. 
  PAULSBORO...GIBBSTOWN...PHILADELPHIA INTERNATIONAL ARPT...MULLICA 
  HILL AND TINICUM TOWNSHIP AROUND 1250 AM EDT. 
  WEST DEPTFORD AND NATIONAL PARK AROUND 1255 AM EDT. 
  GLOUCESTER CITY...DEPTFORD...GLASSBORO...WOODBURY...PITMAN...WESTVILLE 
  AND WOODBURY HEIGHTS AROUND 100 AM EDT. 
  BELLMAWR...BROOKLAWN...AUDUBON PARK AND TURNERSVILLE AROUND 105 AM 
  EDT. 
  CHERRY HILL...LINDENWOLD...MAGNOLIA...ECHELON...ASHLAND...SPRINGDALE...
  ERLTON-ELLISBURG...GOLDEN TRIANGLE AND CHERRY HILL MALL AROUND 110 
  AM EDT. 
  VOORHEES...BERLIN...GREENTREE...BARCLAY-KINGSTON AND RAMBLEWOOD 
  AROUND 115 AM EDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE MARCUS
HOOK...LAWNSIDE...CLEMENTON...BARRINGTON...OAK VALLEY...TRAINER...
RUNNEMEDE...ARDENCROFT...SOMERDALE AND STRATFORD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3988 7524 3987 7521 3988 7519 3988 7515
      3991 7513 3994 7499 3989 7494 3973 7490
      3969 7552 3970 7551 3971 7552 3969 7554
      3980 7555
TIME...MOT...LOC 0434Z 256DEG 38KT 3977 7548 

HAIL...1.00IN
WIND...<50MPH
 
$$

ROBERTSON
2 follow-up statements
913 
WWUS51 KPHI 260449
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1249 AM EDT TUE APR 26 2016

DEC003-NJC033-PAC045-260458-
/O.CAN.KPHI.SV.W.0028.000000T0000Z-160426T0515Z/
NEW CASTLE DE-SALEM NJ-DELAWARE PA-
1249 AM EDT TUE APR 26 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NEW CASTLE...
NORTHWESTERN SALEM AND SOUTHEASTERN DELAWARE COUNTIES IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3973 7491 3971 7511 3972 7535 3981 7541
      3986 7524 3988 7519 3988 7515 3992 7511
      3994 7499 3989 7494 3975 7490
TIME...MOT...LOC 0448Z 258DEG 37KT 3979 7529 

$$

NJC007-015-260515-
/O.CON.KPHI.SV.W.0028.000000T0000Z-160426T0515Z/
CAMDEN NJ-GLOUCESTER NJ-
1249 AM EDT TUE APR 26 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR NORTHWESTERN CAMDEN AND NORTHWESTERN GLOUCESTER COUNTIES...

AT 1248 AM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER GIBBSTOWN...OR
11 MILES SOUTHWEST OF GLOUCESTER CITY...MOVING EAST AT 45 MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE STORM WILL BE NEAR...
  WEST DEPTFORD...NATIONAL PARK AND TINICUM TOWNSHIP AROUND 1255 AM 
  EDT. 
  DEPTFORD...GLASSBORO...WOODBURY...PITMAN...WESTVILLE AND WOODBURY 
  HEIGHTS AROUND 100 AM EDT. 
  GLOUCESTER CITY...BELLMAWR...BROOKLAWN...AUDUBON PARK AND 
  TURNERSVILLE AROUND 105 AM EDT. 
  CHERRY HILL...LINDENWOLD...MAGNOLIA...ECHELON...ASHLAND AND 
  ERLTON-ELLISBURG AROUND 110 AM EDT. 
  VOORHEES...BERLIN...SPRINGDALE...GREENTREE...BARCLAY-KINGSTON AND 
  RAMBLEWOOD AROUND 115 AM EDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE PINE
VALLEY...LAUREL SPRINGS...OAKLYN...LAWNSIDE...CLEMENTON...BARRINGTON...OAK
VALLEY...PINE HILL...RUNNEMEDE AND SOMERDALE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3973 7491 3971 7511 3972 7535 3981 7541
      3986 7524 3988 7519 3988 7515 3992 7511
      3994 7499 3989 7494 3975 7490
TIME...MOT...LOC 0448Z 258DEG 37KT 3979 7529 

HAIL...1.00IN
WIND...<50MPH
 
$$

ROBERTSON
497 
WWUS51 KPHI 260509
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
109 AM EDT TUE APR 26 2016

NJC007-015-260519-
/O.EXP.KPHI.SV.W.0028.000000T0000Z-160426T0515Z/
CAMDEN NJ-GLOUCESTER NJ-
109 AM EDT TUE APR 26 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CAMDEN AND
NORTHERN GLOUCESTER COUNTIES WILL EXPIRE AT 115 AM EDT...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3973 7491 3971 7511 3972 7535 3981 7541
      3986 7524 3988 7519 3988 7515 3992 7511
      3994 7499 3989 7494 3975 7490
TIME...MOT...LOC 0506Z 256DEG 38KT 3979 7529 

$$

ROBERTSON

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 26, 12:54 AM EDTSpecial Weather StatementPHIAtlantic, Burlington, Camden, Gloucester, Ocean66 min
Apr 26, 12:56 AM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Gloucester49 min
Apr 26, 1:22 AM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Ocean42 min
Apr 26, 1:58 AM EDTSpecial Weather StatementPHIWarren47 min
Apr 26, 2:04 AM EDTSpecial Weather StatementPHIOcean41 min
Apr 26, 2:25 AM EDTSpecial Weather StatementPHIHunterdon, Morris, Warren35 min
Apr 26, 2:45 AM EDTSpecial Weather StatementPHIMercer, Middlesex, Somerset60 min
Apr 26, 3:00 AM EDTSpecial Weather StatementPHIMorris, Somerset45 min
Apr 26, 3:17 AM EDTSpecial Weather StatementPHIMonmouth43 min
Apr 26, 3:32 AM EDTSpecial Marine WarningPHI58 min
Apr 26, 3:36 PM EDTSpecial Weather StatementPHIBurlington, Camden24 min
Apr 26, 3:44 PM EDTSevere Thunderstorm WarningPHIBurlington31 min
Apr 26, 4:07 PM EDTSpecial Weather StatementPHIOcean23 min
Apr 26, 4:23 PM EDTSevere Thunderstorm WarningPHIOcean26 min
Apr 26, 4:25 PM EDTSpecial Marine WarningPHI35 min
Apr 26, 5:42 PM EDTSpecial Weather StatementPHIMercer33 min
Apr 26, 5:47 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Monmouth, Ocean28 min
Apr 26, 6:37 PM EDTSpecial Weather StatementPHIBurlington, Camden, Gloucester38 min
Apr 26, 5:38 PM EDTSpecial Weather StatementPHIChester22 min
Apr 26, 5:49 PM EDTSevere Thunderstorm WarningPHIChester, Delaware, Montgomery41 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2016Severe Thunderstorm Warnings in Delaware, 2016Severe Thunderstorm Warnings in Pennsylvania, 2016Every severe thunderstorm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.