Alert archive / New Jersey / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 109, NWS Philadelphia/Mount Holly

June 27, 2007Burlington County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 27, 2007, 10:40 PM EDT for Burlington County, New Jersey. It was in force for 80 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 27, 2007, 10:40 PM EDT (02:40 UTC)
Expired: Jun 28, 2007, 12:00 AM EDT
In force: 80 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

County Burlington County, NJ

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 2.7 hours before the alert went out and 191 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: 348 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 1243 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 280241
SVRPHI
NJC005-280400-
/O.NEW.KPHI.SV.W.0109.070628T0240Z-070628T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1040 PM EDT WED JUN 27 2007

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL MIDNIGHT EDT

* AT 1038 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
  MARLTON...OR ABOUT 10 MILES SOUTHEAST OF CAMDEN...AND MOVING EAST
  AT 20 MPH. ANOTHER SEVERE STORM WAS JUST OVER THE DELAWARE RIVER
  OPPOSITE FLORENCE AND SHOULD AFFECT THE EXTREME NORTHERN PART
  OF THE COUNTY.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MEDFORD BY 1100 PM EDT...
  LEISURETOWNE BY 1115 PM EDT...
  PRESIDENTIAL LAKES BY 1130 PM EDT...
  CHATSWORTH BY 1140 PM EDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

THUNDERSTORMS ARE CAPABLE OF PRODUCING HEAVY RAINFALL WHICH MAY
RESULT IN LOCALIZED AREAS OF FLOODING. DO NOT DRIVE IN AREAS WHERE
WATER IS CROSSING THE ROAD.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

LAT...LON 3975 7478 3978 7482 3978 7490 3981 7492
      3986 7492 3990 7496 4006 7491 4010 7483
      4012 7475 4016 7467 4015 7464 4001 7454
      3975 7439 3972 7439

$$

TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 8:18 PM EDT	Severe Thunderstorm Warning	PHI	Warren	87 min
Jun 27, 8:56 PM EDT	Severe Thunderstorm Warning	PHI	Morris	69 min
Jun 27, 9:38 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	67 min
Jun 27, 10:02 PM EDT	Special Marine Warning	PHI		58 min
Jun 27, 10:09 PM EDT	Severe Thunderstorm Warning	PHI	Mercer	66 min
Jun 27, 10:47 PM EDT	Severe Thunderstorm Warning	PHI	Camden	43 min
Jun 27, 10:57 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic	63 min
Jun 27, 11:06 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	69 min
Jun 27, 11:10 PM EDT	Special Marine Warning	PHI		95 min
Jun 27, 11:30 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	59 min
Jun 28, 3:40 PM EDT	Special Marine Warning	PHI		95 min
Jun 28, 4:51 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	54 min
Jun 28, 5:00 PM EDT	Flash Flood Warning	PHI	Sussex	3 hr
Jun 28, 5:29 PM EDT	Severe Thunderstorm Warning	PHI	Morris	61 min
Jun 28, 7:24 PM EDT	Severe Thunderstorm Warning	PHI	Mercer	66 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2007 Every severe thunderstorm warning in 2007

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.