Alert archive / New Jersey / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 58, NWS Philadelphia/Mount Holly

June 12, 2007Warren County, New Jersey; Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 12, 2007, 12:56 PM EDT for Warren County, New Jersey; Monroe County, Pennsylvania. It was in force for 64 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 12, 2007, 12:56 PM EDT (16:56 UTC)
Expired
Jun 12, 2007, 2:00 PM EDT
In force
64 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

Counties Warren County, NJ, Monroe County, PA

The radar

The Philadelphia radar (KDIX), 131 km from the middle of the area, began a volume at 16:58 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.

IssuedProductOfficeLasted
Jun 12, 12:55 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 4.9 hours before the alert went out and 188 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 12:00Z on 2007-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 107 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2007-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 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
107 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
1104 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
176 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 121656
SVRPHI
NJC041-PAC089-121800-
/O.NEW.KPHI.SV.W.0058.070612T1656Z-070612T1800Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1256 PM EDT TUE JUN 12 2007

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  NORTHERN WARREN COUNTY IN NORTHWEST NEW JERSEY...

* UNTIL 200 PM EDT

* AT 1253 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 9 MILES
  NORTH OF BLAIRSTOWN...OR ABOUT 38 MILES NORTHEAST OF BETHLEHEM...
  AND MOVING SOUTHWEST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  7 MILES NORTHWEST OF BLAIRSTOWN BY 115 PM EDT...
  EAST STROUDSBURG BY 130 PM EDT...

LAT...LON 4115 7516 4114 7509 4108 7503 4110 7499
      4096 7483 4079 7499 4085 7509 4085 7507
      4086 7505 4088 7505 4097 7514 4092 7524
      4104 7545 4122 7516

$$

JJM
1 follow-up statement
000 
WWUS51 KPHI 121734
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
133 PM EDT TUE JUN 12 2007

NJC041-PAC089-121800-
/O.CON.KPHI.SV.W.0058.000000T0000Z-070612T1800Z/
WARREN NJ-MONROE PA-
133 PM EDT TUE JUN 12 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM EDT
FOR EASTERN MONROE AND NORTHERN WARREN COUNTIES...

AT 129 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
LOCATED 8 MILES NORTH-NORTHEAST OF BELVIDERE AND MOVING SOUTHWEST AT 
15 MPH.

ANOTHER STRONG CELL WAS ABOUT 10 MILES NORTHWEST OF BRODHEADSVILLE 
IN MONROE COUNTY. THIS STORM WAS MOVING SOUTHWEST AT 10 TO 15 MILES 
AN HOUR.

LAT...LON 4115 7516 4114 7509 4108 7503 4110 7499
      4096 7483 4079 7499 4085 7509 4085 7507
      4086 7505 4088 7505 4097 7514 4092 7524
      4104 7545 4122 7516

$$

JRP

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 1:08 PM EDTSevere Thunderstorm WarningPHIMercer, Middlesex, Monmouth67 min
Jun 12, 2:04 PM EDTSpecial Marine WarningPHI41 min
Jun 12, 2:44 PM EDTSpecial Marine WarningPHI46 min
Jun 12, 3:09 PM EDTSevere Thunderstorm WarningPHIGloucester25 min
Jun 12, 3:55 PM EDTSpecial Marine WarningPHI35 min
Jun 12, 4:08 PM EDTSevere Thunderstorm WarningPHIMercer37 min
Jun 12, 4:33 PM EDTCoastal Flood AdvisoryPHIAtlantic, Burlington, Cape May, Middlesex, Monmouth, Ocean7 hr
Jun 12, 7:06 PM EDTSevere Thunderstorm WarningPHIMorris, Somerset54 min
Jun 12, 7:48 PM EDTSevere Thunderstorm WarningPHIHunterdon57 min
Jun 12, 1:12 PM EDTSevere Thunderstorm WarningPHILehigh26 min
Jun 12, 1:18 PM EDTSevere Thunderstorm WarningPHIBerks42 min
Jun 12, 2:00 PM EDTSevere Thunderstorm WarningPHICarbon, Lehigh, Northampton30 min
Jun 12, 2:15 PM EDTSevere Thunderstorm WarningPHIMontgomery, Philadelphia30 min
Jun 12, 2:25 PM EDTSevere Thunderstorm WarningPHIBucks35 min
Jun 12, 2:48 PM EDTSevere Thunderstorm WarningPHIPhiladelphia42 min
Jun 12, 3:20 PM EDTSevere Thunderstorm WarningPHIBucks, Montgomery, Philadelphia40 min
Jun 12, 4:00 PM EDTFlash Flood WarningPHIMontgomery3 hr
Jun 12, 5:46 PM EDTFlash Flood WarningPHIBucks119 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.