Alert archive / New Jersey / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 95, NWS Philadelphia/Mount Holly

June 27, 2007Morris County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 27, 2007, 3:16 PM EDT for Morris County, New Jersey. It was in force for 59 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 27, 2007, 3:16 PM EDT (19:16 UTC)
Expired
Jun 27, 2007, 4:15 PM EDT
In force
59 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

County Morris County, NJ

The watch it was issued in

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

IssuedProductOfficeLasted
Jun 27, 12:58 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.3 hours before the alert went out and 130 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 2007-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 357 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 2007-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 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
357 J/kg
Mixed-layer CIN
-152 J/kg
Mixed-layer LCL
1418 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
34 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 271917
SVRPHI
NJC027-272045-
/O.NEW.KPHI.SV.W.0095.070627T1916Z-070627T2045Z/

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

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN MORRIS COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 445 PM EDT

* AT 314 PM EDT...LOCAL LAW ENFORCEMENT REPORTED A SEVERE
  THUNDERSTORM THAT HAS PRODUCED PROLIFIC CLOUD TO GROUND
  LIGHTNING...AND DAMAGING WINDS TO ABOUT 60 MPH IN SUSSEX
  COUNTY. THIS STORM COULD ALSO PRODUCE PENNY SIZE HAIL. 
  THIS STORM WAS LOCATED 10 MILES NORTHWEST OF LAKE 
  TELEMARK...AND MOVING SOUTHEAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAKE TELEMARK BY 345 PM EDT...
  KINNELON BY 355 PM EDT...
  BOONTON BY 400 PM EDT...
  8 MILES NORTHEAST OF PARSIPPANY BY 405 PM EDT...
  PEQUANNOCK TOWNSHIP BY 410 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 4090 7432 4089 7434 4087 7433 4080 7437
      4100 7458 4106 7451 4106 7449 4104 7450
      4103 7449 4104 7445 4102 7443 4100 7439
      4100 7433 4098 7428

$$
 
TFG
2 follow-up statements
000 
WWUS51 KPHI 271942
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
341 PM EDT WED JUN 27 2007

NJC027-272045-
/O.CON.KPHI.SV.W.0095.000000T0000Z-070627T2045Z/
MORRIS NJ-
341 PM EDT WED JUN 27 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHEASTERN MORRIS COUNTY...

AT 337 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...
AND DAMAGING WINDS TO 60 MPH.  THIS STORM WAS LOCATED NEAR
LAKE TELEMARK...MOVING SOUTHEAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAKE TELEMARK...WHITE MEADOW LAKE AND 6 MILES NORTHEAST OF ROCKAWAY
  BY 350 PM EDT...
  KINNELON AND MOUNTAIN LAKES BY 400 PM EDT...
  BOONTON AND BUTLER BY 405 PM EDT...
  7 MILES NORTHEAST OF PARSIPPANY BY 410 PM EDT...
  PEQUANNOCK TOWNSHIP BY 415 PM EDT...
  8 MILES NORTHEAST OF EAST HANOVER BY 420 PM EDT...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. THERE HAVE BEEN 
BETWEEN 60 AND 120 CLOUD TO GROUND LIGHTNING STRIKES WITH THIS STORM
EVERY FIVE MINUTES AS IT MOVED ACROSS SUSSEX COUNTY. 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 SUSSEX COUNTY.
THIS IS A DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY 
STRUCTURE AND STAY AWAY FROM WINDOWS

LAT...LON 4090 7432 4089 7434 4087 7433 4080 7437
      4095 7462 4105 7450 4106 7449 4104 7450
      4103 7449 4104 7445 4102 7443 4100 7439
      4100 7433 4098 7428

$$
 
TFG
000 
WWUS51 KPHI 272015
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
415 PM EDT WED JUN 27 2007

NJC027-272025-
/O.CAN.KPHI.SV.W.0095.000000T0000Z-070627T2045Z/
MORRIS NJ-
415 PM EDT WED JUN 27 2007

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MORRIS COUNTY IS
CANCELLED...

THE STORM HAS EXITED THE COUNTY.

LAT...LON 4090 7432 4089 7434 4087 7433 4080 7437
      4095 7462 4105 7450 4106 7449 4104 7450
      4103 7449 4104 7445 4102 7443 4100 7439
      4100 7433 4098 7428

$$
 
TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 12:45 PM EDTSevere Thunderstorm WarningPHISussex45 min
Jun 27, 1:31 PM EDTSevere Thunderstorm WarningPHISussex89 min
Jun 27, 2:03 PM EDTSpecial Marine WarningPHI87 min
Jun 27, 2:43 PM EDTFlash Flood WarningPHISussex3 hr
Jun 27, 2:58 PM EDTSevere Thunderstorm WarningPHISussex77 min
Jun 27, 3:42 PM EDTExcessive Heat WarningPHIBurlington, Camden, Gloucester, Mercer27 hr
Jun 27, 7:29 PM EDTSevere Thunderstorm WarningPHISussex76 min

Nearby

Severe 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; the sounding from the Mesonet's radiosonde archive.