Alert archive / New Jersey / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 101, NWS Philadelphia/Mount Holly

June 29, 2006Mercer County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 29, 2006, 10:07 PM EDT for Mercer County, New Jersey. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 29, 2006, 10:07 PM EDT (02:07 UTC)
Expired: Jun 29, 2006, 10:30 PM EDT
In force: 23 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

County Mercer County, NJ

The radar

The Philadelphia radar (KDIX), 47 km from the middle of the area, began a volume at 02:07 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 29, 4:44 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 2.1 hours before the alert went out and 173 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: 674 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 902 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 300207
SVRPHI
NJC021-300230-
/O.NEW.KPHI.SV.W.0101.060630T0207Z-060630T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1007 PM EDT THU JUN 29 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MERCER COUNTY IN CENTRAL NEW JERSEY
  THIS INCLUDES THE CITY OF TRENTON

* UNTIL 1030 PM EDT

* AT 1003 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 NEAR
  MERCERVILLE-HAMILTON SQUARE...OR ABOUT NEAR TRENTON...AND MOVING
  NORTHEAST AT 15 TO 20 MPH.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...OCCASIONAL TO 
FREQUENT 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.

LAT...LON 4029 7488 4018 7472 4025 7454 4037 7476

$$

JRP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 10:11 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester	34 min
Jun 29, 10:25 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex	35 min
Jun 29, 10:42 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	48 min
Jun 30, 6:28 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	47 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.