Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 101, NWS Philadelphia/Mount Holly

June 27, 2007Warren County, New Jersey; Carbon County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 27, 2007, 8:18 PM EDT for Warren County, New Jersey; Carbon County, Northampton County, Pennsylvania. It was in force for 87 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 27, 2007, 8:18 PM EDT (00:18 UTC)
Expired
Jun 27, 2007, 9:45 PM EDT
In force
87 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

Counties Warren County, NJ, Carbon County, PA, Northampton County, PA

What was reported inside it

TimeReportWhereRemark
Jun 27, 8:50 PM EDTTSTM WND DMG2 S Northampton, PAWIRES DOWN IN HANOVER TOWNSHIP
Jun 27, 8:59 PM EDTTSTM WND DMG3 Se Belvidere, NJWIRES DOWN IN WHITE TOWNSHIP NEAR HAZEN

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, 0.3 hours before the alert went out and 209 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 280019
SVRPHI
NJC041-PAC025-095-280145-
/O.NEW.KPHI.SV.W.0101.070628T0018Z-070628T0145Z/

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

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
  THIS INCLUDES THE CITY OF BETHLEHEM...
  SOUTHEASTERN CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
  WARREN COUNTY IN NORTHWEST NEW JERSEY...

* UNTIL 945 PM EDT

* AT 814 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE STORMS EXTENDING FROM MIDDLE SMITHFIELD TOWNSHIP
  IN MONROE COUNTY TO NEAR WEATHERLY IN CARBON COUNTY.
  THIS LINE IS CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH AND IS MOVING
  EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NORTHAMPTON BY 830 PM EDT...
  BATH BY 835 PM EDT...
  NAZARETH BY 845 PM EDT...
  BELFAST AND 6 MILES NORTH OF OLD ORCHARD BY 850 PM EDT...
  EASTON BY 855 PM EDT...
  BRASS CASTLE AND OXFORD BY 915 PM EDT...

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 4090 7479 4059 7530 4060 7539 4067 7543
      4065 7549 4074 7554 4073 7557 4075 7561
      4079 7563 4078 7567 4084 7566 4088 7553
      4081 7548 4082 7541 4086 7530 4092 7524
      4096 7514 4100 7512 4105 7495

$$
 
TFG

The office that day

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

IssuedProductOfficeCountiesLasted
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, 10:09 PM EDTSevere Thunderstorm WarningPHIMercer66 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 Pennsylvania, 2007Severe Thunderstorm Warnings in New Jersey, 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.