Alert archive / New Jersey / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 172, NWS Philadelphia/Mount Holly

July 18, 2006Gloucester County, Salem County, New Jersey; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 18, 2006, 7:20 PM EDT for Gloucester County, Salem County, New Jersey; New Castle County, Delaware. It was in force for 55 min. 3 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 18, 2006, 7:20 PM EDT (23:20 UTC)
Expired
Jul 18, 2006, 8:15 PM EDT
In force
55 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

Counties New Castle County, DE, Gloucester County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 96 km from the middle of the area, began a volume at 23:21 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 18, 7:22 PM EDTTSTM WND GST 41Wilmington, DEA 41 MPH THUNDERSTORM WIND GUST WAS MEASURED AT THE NEW CASTLE COUNTY AIRPORT NEAR WILMINGTON.
Jul 18, 7:25 PM EDTTSTM WND DMGCarneys Point, NJLARGE TREE LIMBS DOWN IN CARNEYS POINT.
Jul 18, 7:30 PM EDTTSTM WND DMGWilmington, DELARGE TREE LIMBS DOWN WITH A 51 MPH WIND GUST REPORTED IN WILMINGTON.

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 18, 6:37 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.3 hours before the alert went out and 58 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 2006-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1100 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 2006-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 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
1100 J/kg
Mixed-layer CIN
-174 J/kg
Mixed-layer LCL
1804 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
16 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 182320
SVRPHI
DEC003-NJC015-033-190015-
/O.NEW.KPHI.SV.W.0172.060718T2320Z-060719T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
720 PM EDT TUE JUL 18 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE
  THIS INCLUDES THE CITY OF WILMINGTON
  NORTHWESTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY
  NORTHERN SALEM COUNTY IN SOUTHERN NEW JERSEY

* UNTIL 815 PM EDT

* AT 717 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN
  EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR ELSMERE...OR ABOUT
  NEAR WILMINGTON...AND MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CARNEYS POINT AND BELLEFONTE BY 725 PM EDT...
  BECKETT BY 735 PM EDT...
  GIBBSTOWN AND 6 MILES NORTH OF WOODSTOWN BY 740 PM EDT...
  MULLICA HILL BY 745 PM EDT...

A WIND GUST TO 67 MPH HAS BEEN MEASURED IN NEW CASTLE COUNTY.

WIND DAMAGE WITH THIS STORM WILL OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

LAT...LON 3980 7566 3955 7578 3956 7521 3985 7517

$$

AMC
1 follow-up statement
000 
WWUS51 KPHI 182348
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
748 PM EDT TUE JUL 18 2006

DEC003-NJC033-182358-
/O.CAN.KPHI.SV.W.0172.000000T0000Z-060719T0015Z/
NEW CASTLE DE-SALEM NJ-
748 PM EDT TUE JUL 18 2006

...THE SEVERE THUNDERSTORM WARNING FOR SALEM AND NEW CASTLE COUNTIES
IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
TUESDAY EVENING FOR NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.
A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 100 AM EDT
WEDNESDAY MORNING FOR SOUTHWESTERN DELAWARE AND NORTHEASTERN MARYLAND
AND NORTHWESTERN NEW JERSEY AND SOUTHEAST PENNSYLVANIA.

LAT...LON 3979 7542 3957 7508 3962 7491 3985 7517

$$

NJC015-190015-
/O.CON.KPHI.SV.W.0172.000000T0000Z-060719T0015Z/
GLOUCESTER NJ-
748 PM EDT TUE JUL 18 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR GLOUCESTER COUNTY...

AT 746 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR MULLICA HILL...OR
ABOUT 15 MILES SOUTH OF CAMDEN...MOVING EAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  TURNERSVILLE AND 6 MILES NORTH OF CLAYTON BY 755 PM EDT...
  WILLIAMSTOWN AND 9 MILES NORTH OF VICTORY LAKES BY 805 PM EDT...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
TUESDAY EVENING FOR NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.
A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 100 AM EDT
WEDNESDAY MORNING FOR SOUTHWESTERN DELAWARE AND NORTHEASTERN MARYLAND
AND NORTHWESTERN NEW JERSEY AND SOUTHEAST PENNSYLVANIA.

LAT...LON 3979 7542 3957 7508 3962 7491 3985 7517

$$

AMC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 6:04 PM EDTSevere Thunderstorm WarningPHIWarren56 min
Jul 18, 6:15 PM EDTSevere Thunderstorm WarningPHIHunterdon60 min
Jul 18, 6:46 PM EDTSevere Thunderstorm WarningPHIMorris, Somerset44 min
Jul 18, 7:35 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden55 min
Jul 18, 7:56 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer34 min

Nearby

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