Alert archive / New Jersey / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 32, NWS Philadelphia/Mount Holly

May 15, 2006Gloucester County, New Jersey; Delaware County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 15, 2006, 6:42 PM EDT for Gloucester County, New Jersey; Delaware County, Pennsylvania. It was in force for 48 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: May 15, 2006, 6:42 PM EDT (22:42 UTC)
Expired: May 15, 2006, 7:30 PM EDT
In force: 48 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

Counties Gloucester County, NJ, Delaware County, PA

The radar

The Philadelphia radar (KDIX), 85 km from the middle of the area, began a volume at 22:45 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

Time	Report	Where	Remark
May 15, 7:07 PM EDT	HAIL 1	2 S Clifton Heights, PA

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

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.7 hours before the alert went out and 74 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 695 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 238 m²/s²
0-3 km storm-relative helicity: 312 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 152244
SVRPHI
NJC015-PAC045-152330-
/O.NEW.KPHI.SV.W.0032.060515T2242Z-060515T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
642 PM EDT MON MAY 15 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA
  THIS INCLUDES THE CITY OF SPRINGFIELD
  NORTHWESTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY

* UNTIL 730 PM EDT

* AT 640 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES
  SOUTHWEST OF LIMA...OR ABOUT 6 MILES NORTH OF WILMINGTON...AND
  MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LIMA AND CHESTER BY 700 PM EDT
  NETHER PROVIDENCE TOWNSHIP...SWARTHMORE AND GIBBSTOWN BY 705 PM EDT
  SPRINGFIELD...BROOMALL AND FOLCROFT BY 710 PM EDT
  DREXEL HILL AND RADNOR TOWNSHIP BY 715 PM EDT

LAT...LON 3986 7561 3977 7540 3977 7543 3978 7514
      3988 7527 4005 7538

$$

NIERENBERG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 12:56 AM EDT	Special Marine Warning	PHI		94 min
May 15, 7:29 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex	31 min
May 15, 7:07 PM EDT	Severe Thunderstorm Warning	PHI	Philadelphia	38 min

Nearby

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