Alert archive / New Jersey / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 188, NWS Philadelphia/Mount Holly

July 21, 2006Burlington County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 21, 2006, 2:54 PM EDT for Burlington County, New Jersey. It was in force for 36 min. 4 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
Jul 21, 2006, 2:54 PM EDT (18:54 UTC)
Expired
Jul 21, 2006, 3:30 PM EDT
In force
36 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

County Burlington County, NJ

The radar

The Philadelphia radar (KDIX), 38 km from the middle of the area, began a volume at 18:56 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.

What was reported inside it

TimeReportWhereRemark
Jul 21, 3:07 PM EDTHAIL 12 Nw Mount Holly, NJALSO WIND GUST TO 57 MPH
Jul 21, 3:10 PM EDTTSTM WND DMG2 Ssw Delanco, NJNUMEROUS TREES AND POWER LINES DOWN IN DELRAN.
Jul 21, 3:10 PM EDTTSTM WND GST 571 W Mount Holly, NJA 57 MPH THUNDERSTORM WIND GUST WAS REPORTED IN WESTAMPTON.
Jul 21, 3:12 PM EDTHAIL 0.75Willingboro, NJPENNY SIZE HAIL REPORTED IN WILLINGBORO.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 6.9 hours before the alert went out and 194 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 12:00Z on 2006-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 173 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2006-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 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
173 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
944 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 211854
SVRPHI
NJC005-211930-
/O.NEW.KPHI.SV.W.0188.060721T1854Z-060721T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
254 PM EDT FRI JUL 21 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 330 PM EDT

* AT 251 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
  WILLINGBORO...OR ABOUT 11 MILES EAST OF CAMDEN...AND MOVING EAST AT
  15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MOUNT HOLLY BY 315 PM EDT...
  PEMBERTON AND LEISURETOWNE BY 330 PM EDT...

LAT...LON 4004 7499 3992 7499 3989 7462 4009 7468

$$

AMC
2 follow-up statements
000 
WWUS51 KPHI 211918
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
317 PM EDT FRI JUL 21 2006

NJC005-211930-
/O.CON.KPHI.SV.W.0188.000000T0000Z-060721T1930Z/
BURLINGTON NJ-
317 PM EDT FRI JUL 21 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR NORTHERN BURLINGTON COUNTY...

AT 310 PM EDT...LAW ENFORCEMENT IN DELRAN REPORTED NUMEROUS
TREES AND WIRES DOWN. ALSO, AT 312 PM PENNY SIZE HAIL WAS REPORTED 
IN WILLINGBORO. THE SEVERE THUNDERSTORM WAS LOCATED NEAR MOUNT 
HOLLY...OR ABOUT 15 MILES SOUTH OF TRENTON...MOVING EAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  PEMBERTON AND PEMBERTON HEIGHTS BY 325 PM EDT...
  FORT DIX...WRIGHTSTOWN...BROWNS MILLS AND 7 MILES NORTHWEST OF
  COUNTRY LAKE ESTATES BY 330 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.

LAT...LON 4004 7497 3992 7494 3989 7452 4010 7463

$$

GORSE
000 
WWUS51 KPHI 211937
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
332 PM EDT FRI JUL 21 2006

NJC005-211942-
/O.EXP.KPHI.SV.W.0188.000000T0000Z-060721T1930Z/
BURLINGTON NJ-
332 PM EDT FRI JUL 21 2006

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BURLINGTON COUNTY
EXPIRED AT 330 PM EDT...

THE STORM THAT PRODUCED SEVERE WEATHER OVER NORTHWEST BURLINGTON 
COUNTY IS CONTINUING TO MOVE EAST ACROSS THE NORTH CENTRAL PART OF 
THE COUNTY. WHILE IT NO LONGER SEEMS TO BE SEVERE, IT COULD STILL 
PRODUCE HEAVY RAINS AND GUSTY WINDS IN PEMBERTON, FORT DIX AND THE 
BROWNS MILLS AREA.

LAT...LON 4004 7497 3992 7494 3989 7452 4010 7463

$$

AMC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 2:56 PM EDTFlash Flood WatchPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more37 hr
Jul 21, 3:41 PM EDTSevere Thunderstorm WarningPHIBurlington, Ocean26 min
Jul 21, 3:57 PM EDTSevere Thunderstorm WarningPHIMiddlesex33 min
Jul 21, 5:08 PM EDTSpecial Marine WarningPHI52 min
Jul 21, 5:13 PM EDTSevere Thunderstorm WarningPHICumberland33 min
Jul 21, 5:33 PM EDTFlash Flood WarningPHISomerset3 hr
Jul 21, 6:56 PM EDTFlash Flood WarningPHIMiddlesex, Somerset3 hr
Jul 21, 7:07 PM EDTSevere Thunderstorm WarningPHIHunterdon29 min
Jul 21, 7:31 PM EDTFlash Flood WarningPHIHunterdon3 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2006Every severe thunderstorm warning in 2006

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; radar from the NEXRAD Level II archive.