Alert archive / New Jersey / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 217, NWS Philadelphia/Mount Holly

July 28, 2006Burlington County, New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 28, 2006, 3:07 PM EDT for Burlington County, New Jersey; Bucks County, Pennsylvania. 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
Jul 28, 2006, 3:07 PM EDT (19:07 UTC)
Expired
Jul 28, 2006, 4:00 PM EDT
In force
53 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

Counties Burlington County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 39 km from the middle of the area, began a volume at 19:09 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 28, 3:10 PM EDTTSTM WND DMGPalmyra, NJLIMBS AND WIRES DOWN IN PALMYRA, MOUNT LAUREL, MOORESTOWN, PEMBERTON AND BORDENTOWN

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
Jul 28, 1:00 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.1 hours before the alert went out and 122 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, Phillips Aaf/Abe, MD at 12:00Z on 2006-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 411 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, Phillips Aaf/Abe, MD at 12:00Z on 2006-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 square meters per square second.1939Sfc1 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
411 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1201 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
106 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.

000 
WUUS51 KPHI 281907
SVRPHI
NJC005-PAC017-282000-
/O.NEW.KPHI.SV.W.0217.060728T1907Z-060728T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
307 PM EDT FRI JUL 28 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA
  NORTHWESTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY

* UNTIL 400 PM EDT

* AT 305 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR RIVERSIDE...OR ABOUT NEAR
  PHILADELPHIA...AND MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WILLINGBORO...BEVERLY AND 7 MILES NORTH OF MARLTON BY 315 PM EDT...
  7 MILES SOUTH OF BRISTOL BY 320 PM EDT...
  MOUNT HOLLY AND 6 MILES NORTH OF MEDFORD BY 325 PM EDT...
  PEMBERTON BY 335 PM EDT...
  WRIGHTSTOWN BY 340 PM EDT...

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.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS

LAT...LON 4013 7491 3998 7505 3981 7488 4005 7455

$$

WN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 8:39 PM EDTSpecial Marine WarningPHI96 min
Jul 27, 9:50 PM EDTSevere Thunderstorm WarningPHIGloucester, Salem40 min
Jul 27, 10:04 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden56 min
Jul 27, 10:14 PM EDTFlash Flood WarningPHIAtlantic, Burlington, Camden, Gloucester, Ocean2 hr
Jul 27, 10:38 PM EDTSpecial Marine WarningPHI97 min
Jul 28, 12:04 AM EDTSevere Thunderstorm WarningPHIGloucester, Salem56 min
Jul 28, 12:40 AM EDTSevere Thunderstorm WarningPHIBurlington65 min
Jul 28, 12:50 AM EDTFlash Flood WarningPHIGloucester3 hr
Jul 28, 2:49 PM EDTSevere Thunderstorm WarningPHICamden, Gloucester56 min
Jul 28, 3:32 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Monmouth, Ocean73 min
Jul 28, 3:43 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Somerset47 min
Jul 28, 3:46 PM EDTSpecial Marine WarningPHI89 min
Jul 28, 4:04 PM EDTSpecial Marine WarningPHI86 min
Jul 28, 4:19 PM EDTSevere Thunderstorm WarningPHICape May41 min
Jul 28, 4:50 PM EDTSpecial Marine WarningPHI25 min
Jul 27, 10:55 PM EDTSevere Thunderstorm WarningPHIChester65 min
Jul 27, 11:32 PM EDTSevere Thunderstorm WarningPHIDelaware, Montgomery88 min
Jul 28, 12:32 AM EDTSevere Thunderstorm WarningPHIPhiladelphia43 min
Jul 28, 12:40 AM EDTFlash Flood WarningPHIBucks, Montgomery, Philadelphia3 hr
Jul 28, 2:28 PM EDTSevere Thunderstorm WarningPHIChester, Delaware, Montgomery, Philadelphia62 min
Jul 28, 4:03 PM EDTSevere Thunderstorm WarningPHIBucks, Montgomery57 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2006Severe Thunderstorm Warnings in Pennsylvania, 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.