Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 51, NWS Philadelphia/Mount Holly

June 13, 2014Burlington County, Camden County, New Jersey; Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 13, 2014, 4:58 PM EDT for Burlington County, Camden County, New Jersey; Philadelphia County, Pennsylvania. It was in force for 23 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: Jun 13, 2014, 4:58 PM EDT (20:58 UTC)
Expired: Jun 13, 2014, 5:21 PM EDT
In force: 23 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Burlington County, NJ, Camden County, NJ, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 50 km from the middle of the area, began a volume at 20:58 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

Brookhaven, NY (KOKX), launched 12:00Z, 9.0 hours before the alert went out and 203 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: 101 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 502 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

169 
WUUS51 KPHI 132058
SVRPHI
NJC005-007-PAC101-132200-
/O.NEW.KPHI.SV.W.0051.140613T2058Z-140613T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
458 PM EDT FRI JUN 13 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  EASTERN PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
  NORTHWESTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 600 PM EDT

* AT 457 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR NATIONAL PARK...MOVING
  NORTHEAST AT 20 MPH. THIS STORM IS CAPABLE OF PRODUCING DAMAGING
  WINDS TO 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CAMDEN AND BEN FRANKLIN BRIDGE AROUND 510 PM EDT...
  PALMYRA AND WISSINOMING AROUND 530 PM EDT...
  HOLMESBURG AND TACONY AROUND 535 PM EDT...
  RIVERSIDE AND NORTHEAST PHILADELPHIA AROUND 545 PM EDT...
  WILLINGBORO AROUND 550 PM EDT...
  BEVERLY AROUND 555 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

&&

LAT...LON 4000 7478 3987 7511 3989 7514 3988 7518
      3990 7519 4013 7500 4011 7496 4009 7495
      4007 7498 4005 7497 4007 7494 4007 7489
TIME...MOT...LOC 2058Z 225DEG 16KT 3989 7515

$$

TFG

1 follow-up statement

921 
WWUS51 KPHI 132121
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
521 PM EDT FRI JUN 13 2014

NJC005-007-PAC101-132131-
/O.CAN.KPHI.SV.W.0051.000000T0000Z-140613T2200Z/
CAMDEN NJ-PHILADELPHIA PA-BURLINGTON NJ-
521 PM EDT FRI JUN 13 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BURLINGTON...
EASTERN PHILADELPHIA AND NORTHWESTERN CAMDEN COUNTIES IS CANCELLED...

THE THUNDERSTORMS HAVE WEAKENED.

LAT...LON 4000 7478 3987 7511 3989 7514 3988 7518
      3990 7519 4013 7500 4011 7496 4009 7495
      4007 7498 4005 7497 4007 7494 4007 7489
TIME...MOT...LOC 2121Z 225DEG 16KT 3996 7506

$$

TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 3:25 AM EDT	Special Weather Statement	PHI	Hunterdon	65 min
Jun 13, 4:28 AM EDT	Special Weather Statement	PHI	Hunterdon, Sussex, Warren	62 min
Jun 13, 8:32 AM EDT	Areal Flood Advisory	PHI	Morris, Sussex, Warren	118 min
Jun 13, 11:54 AM EDT	Flash Flood Watch	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 5 more	11 hr
Jun 13, 2:00 PM EDT	Special Marine Warning	PHI		90 min
Jun 13, 2:16 PM EDT	Special Weather Statement	PHI	Warren	119 min
Jun 13, 2:52 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Sussex, Warren	4 hr
Jun 13, 3:14 PM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	2 hr
Jun 13, 3:16 PM EDT	Areal Flood Advisory	PHI	Camden, Gloucester, Hunterdon, Mercer, Salem, Somerset	4 hr
Jun 13, 3:36 PM EDT	Small Craft Advisory for Hazardous Seas	PHI		6 hr
Jun 13, 3:38 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset and 1 more	52 min
Jun 13, 3:46 PM EDT	Flash Flood Warning	PHI	Morris, Somerset	4 hr
Jun 13, 3:52 PM EDT	Special Weather Statement	PHI	Camden, Gloucester, Mercer, Middlesex, Salem	53 min
Jun 13, 4:06 PM EDT	Special Marine Warning	PHI		54 min
Jun 13, 4:18 PM EDT	Flash Flood Warning	PHI	Sussex, Warren	4 hr
Jun 13, 4:27 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Somerset, Sussex	63 min
Jun 13, 5:04 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Cumberland, Gloucester, Mercer, Middlesex and 3 more	4 hr
Jun 13, 5:08 PM EDT	Special Weather Statement	PHI	Middlesex	37 min
Jun 13, 5:24 PM EDT	Flash Flood Warning	PHI	Middlesex	4 hr
Jun 13, 5:36 PM EDT	Special Weather Statement	PHI	Monmouth	54 min
Jun 13, 6:24 PM EDT	Areal Flood Warning	PHI	Hunterdon	4 hr
Jun 13, 6:26 PM EDT	Special Weather Statement	PHI	Monmouth, Ocean	94 min
Jun 13, 6:46 PM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more	6 hr
Jun 13, 6:55 PM EDT	Areal Flood Advisory	PHI	Monmouth, Ocean	4 hr
Jun 13, 4:46 AM EDT	Areal Flood Advisory	PHI	Berks, Chester, Lehigh, Montgomery	3 hr
Jun 13, 6:17 AM EDT	River Flood Warning	PHI	Chester	4 hr
Jun 13, 6:41 AM EDT	Areal Flood Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery	15 hr
Jun 13, 12:36 PM EDT	Special Weather Statement	PHI	Berks	69 min
Jun 13, 1:25 PM EDT	Flash Flood Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	4 hr
Jun 13, 1:48 PM EDT	Flash Flood Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery	4 hr
Jun 13, 1:48 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	57 min
Jun 13, 2:34 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery	48 min
Jun 13, 2:42 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh, Northampton	63 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2014 Severe Thunderstorm Warnings in Pennsylvania, 2014 Every severe thunderstorm warning in 2014

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.