Alert archive / New Jersey / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 83, NWS Philadelphia/Mount Holly

June 19, 2007Hunterdon County, Warren County, New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 19, 2007, 8:49 PM EDT for Hunterdon County, Warren County, New Jersey; Bucks County, Pennsylvania. It was in force for 56 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
Jun 19, 2007, 8:49 PM EDT (00:49 UTC)
Expired
Jun 19, 2007, 9:45 PM EDT
In force
56 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

Counties Hunterdon County, NJ, Warren County, NJ, Bucks County, PA

What was reported inside it

TimeReportWhereRemark
Jun 19, 8:55 PM EDTTSTM WND DMG7 Se Riegelsville, PATREE REPORTED DOWN IN SPRINGFIELD TOWNSHIP.
Jun 19, 9:09 PM EDTTSTM WND DMG4 Nne Belvidere, NJTREE REPORTED DOWN ON RAMSEYBURG ROAD IN KNOWLTON TOWNSHIP.

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 19, 3:02 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.8 hours before the alert went out and 201 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 2007-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2007-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1405 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
63 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 200051
SVRPHI
NJC019-041-PAC017-200145-
/O.NEW.KPHI.SV.W.0083.070620T0049Z-070620T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
849 PM EDT TUE JUN 19 2007

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  SOUTHERN WARREN COUNTY IN NORTHWEST NEW JERSEY...
  NORTHWESTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...

* UNTIL 945 PM EDT

* AT 848 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
  QUAKERTOWN...OR ABOUT 9 MILES SOUTH OF BETHLEHEM...AND MOVING
  NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  7 MILES SOUTHEAST OF ALPHA BY 905 PM EDT...
  MILFORD...FRENCHTOWN AND BLOOMSBURY BY 910 PM EDT...
  CLINTON...ANNANDALE...HIGH BRIDGE AND GLEN GARDNER BY 925 PM EDT...
  LEBANON BY 930 PM EDT...
  WHITE HOUSE STATION BY 935 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 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.

THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE IN BERKS COUNTY.

LAT...LON 4045 7551 4024 7520 4057 7471 4089 7505
      4060 7524

$$

RPW
1 follow-up statement
000
WWUS51 KPHI 200128
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
927 PM EDT TUE JUN 19 2007

NJC019-041-PAC017-200145-
/O.CON.KPHI.SV.W.0083.000000T0000Z-070620T0145Z/
WARREN NJ-HUNTERDON NJ-BUCKS PA-
927 PM EDT TUE JUN 19 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR CENTRAL BUCKS...HUNTERDON AND EASTERN WARREN COUNTIES...

AT 924 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM OXFORD
TO FRENCHTOWN TO BRITTANY FARMS-HIGHLANDS...OR ALONG A LINE EXTENDING
FROM 23 MILES NORTHEAST OF BETHLEHEM TO 19 MILES SOUTHEAST OF
BETHLEHEM TO 17 MILES NORTH OF PHILADELPHIA...MOVING NORTHEAST AT 35 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  HIGH BRIDGE...CLINTON AND ANNANDALE BY 935 PM EDT...
  NEW HOPE...STOCKTON...LEBANON AND CALIFON BY 940 PM EDT...
  FLEMINGTON...WHITE HOUSE STATION AND LAMBERTVILLE BY 945 PM EDT...

LAT...LON 4031 7535 4017 7508 4057 7471 4080 7490
      4095 7501 4048 7513

$$

RPW

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 1:25 AM EDTFlash Flood WarningPHIMercer3 hr
Jun 19, 8:01 PM EDTSevere Thunderstorm WarningPHILehigh, Northampton59 min
Jun 19, 8:18 PM EDTSevere Thunderstorm WarningPHIBerks, Montgomery57 min
Jun 19, 11:14 PM EDTFlash Flood WarningPHIBerks4 hr
Jun 19, 11:34 PM EDTFlash Flood WarningPHIMontgomery4 hr
Jun 19, 11:50 PM EDTSevere Thunderstorm WarningPHIBerks, Chester55 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.