Alert archive / New Jersey / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 164, NWS Philadelphia/Mount Holly

July 29, 2007Burlington County, Camden County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 29, 2007, 12:52 PM EDT for Burlington County, Camden County, New Jersey. It was in force for 53 min. 2 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 29, 2007, 12:52 PM EDT (16:52 UTC)
Expired
Jul 29, 2007, 1:45 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, Camden County, NJ

The radar

The Philadelphia radar (KDIX), 49 km from the middle of the area, began a volume at 16:55 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 29, 1:02 PM EDTTSTM WND DMGMarlton, NJTREES AND WIRES DOWN IN VOORHEES
Jul 29, 1:12 PM EDTTSTM WND DMGMedford Lakes, NJTREES AND WIRES REPORTED DOWN IN MEDFORD.

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, 4.9 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, Brookhaven, NY at 12:00Z on 2007-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 593 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 2007-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
593 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
944 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
8 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 291651
SVRPHI
NJC005-007-291745-
/O.NEW.KPHI.SV.W.0164.070729T1652Z-070729T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1252 PM EDT SUN JUL 29 2007

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  NORTHWESTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF CAMDEN...

* UNTIL 145 PM EDT

* AT 1251 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 CHERRY HILL...OR ABOUT 7
  MILES SOUTHEAST OF CAMDEN...AND MOVING EAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GREENTREE AND 6 MILES NORTH OF BERLIN BY 100 PM EDT...
  MARLTON BY 105 PM EDT...
  MEDFORD AND LUMBERTON BY 130 PM EDT...

LAT...LON 3995 7514 3978 7508 3980 7466 4007 7488

$$

EBERWINE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 6:15 AM EDTSpecial Marine WarningPHI90 min
Jul 29, 11:01 AM EDTSevere Thunderstorm WarningPHICape May59 min
Jul 29, 11:58 AM EDTSevere Thunderstorm WarningPHISomerset62 min
Jul 29, 11:59 AM EDTSevere Thunderstorm WarningPHIMonmouth, Ocean91 min
Jul 29, 12:23 PM EDTSevere Thunderstorm WarningPHIMiddlesex67 min
Jul 29, 12:57 PM EDTSevere Thunderstorm WarningPHICape May, Cumberland63 min
Jul 29, 1:46 PM EDTSevere Thunderstorm WarningPHIBurlington44 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2007Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.