Alert archive / New Jersey / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 108, NWS Philadelphia/Mount Holly

June 27, 2007Mercer County, New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 27, 2007, 10:09 PM EDT for Mercer County, New Jersey; Bucks County, Pennsylvania. It was in force for 66 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
Jun 27, 2007, 10:09 PM EDT (02:09 UTC)
Expired
Jun 27, 2007, 11:15 PM EDT
In force
66 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

Counties Mercer County, NJ, Bucks County, PA

What was reported inside it

TimeReportWhereRemark
Jun 27, 10:15 PM EDTTSTM WND DMGTrenton, NJTREES/WIRES DOWN IN SEVERAL LOCATIONS

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
Jun 27, 7:26 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 2.2 hours before the alert went out and 172 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 00:00Z on 2007-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 348 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2007-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.193958Sfc1 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
348 J/kg
Mixed-layer CIN
-181 J/kg
Mixed-layer LCL
1243 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
79 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 280209
SVRPHI
NJC021-PAC017-280315-
/O.NEW.KPHI.SV.W.0108.070628T0209Z-070628T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1009 PM EDT WED JUN 27 2007

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...
  SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...

* UNTIL 1115 PM EDT

* AT 1005 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  EWING...OR ABOUT 6 MILES WEST OF TRENTON...AND MOVING EAST AT 20
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  EWING BY 1015 PM EDT...
  TRENTON AND 6 MILES SOUTH OF PENNINGTON BY 1020 PM EDT...
  WHITE HORSE AND LAWRENCEVILLE BY 1025 PM EDT...
  MERCERVILLE-HAMILTON SQUARE BY 1035 PM EDT...

THUNDERSTORMS ARE CAPABLE OF PRODUCING HEAVY RAINFALL WHICH MAY
RESULT IN LOCALIZED AREAS OF FLOODING. DO NOT DRIVE IN AREAS WHERE
WATER IS CROSSING THE ROAD.

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.

LAT...LON 4027 7487 4015 7484 4017 7460 4023 7449
      4033 7463 4034 7479

$$

TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 8:18 PM EDTSevere Thunderstorm WarningPHIWarren87 min
Jun 27, 8:56 PM EDTSevere Thunderstorm WarningPHIMorris69 min
Jun 27, 9:38 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester67 min
Jun 27, 10:02 PM EDTSpecial Marine WarningPHI58 min
Jun 27, 10:40 PM EDTSevere Thunderstorm WarningPHIBurlington80 min
Jun 27, 10:47 PM EDTSevere Thunderstorm WarningPHICamden43 min
Jun 27, 10:57 PM EDTSevere Thunderstorm WarningPHIAtlantic63 min
Jun 27, 11:06 PM EDTSevere Thunderstorm WarningPHIMonmouth69 min
Jun 27, 11:10 PM EDTSpecial Marine WarningPHI95 min
Jun 27, 11:30 PM EDTSevere Thunderstorm WarningPHIOcean59 min
Jun 28, 3:40 PM EDTSpecial Marine WarningPHI95 min
Jun 28, 4:51 PM EDTSevere Thunderstorm WarningPHISussex54 min
Jun 28, 5:00 PM EDTFlash Flood WarningPHISussex3 hr
Jun 28, 5:29 PM EDTSevere Thunderstorm WarningPHIMorris61 min
Jun 28, 7:24 PM EDTSevere Thunderstorm WarningPHIMercer66 min
Jun 27, 8:04 PM EDTSevere Thunderstorm WarningPHIMonroe56 min
Jun 27, 8:33 PM EDTSevere Thunderstorm WarningPHIChester72 min
Jun 27, 9:10 PM EDTSevere Thunderstorm WarningPHIDelaware65 min
Jun 27, 9:19 PM EDTSevere Thunderstorm WarningPHIBerks, Lehigh86 min
Jun 28, 6:30 PM EDTSevere Thunderstorm WarningPHIBucks60 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2007Severe Thunderstorm Warnings in Pennsylvania, 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.