Alert archive / New Jersey / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 72, NWS Philadelphia/Mount Holly

July 4, 2012Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 4, 2012, 11:01 PM EDT for Ocean County, New Jersey. It was in force for 29 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: Jul 4, 2012, 11:01 PM EDT (03:01 UTC)
Expired: Jul 4, 2012, 11:30 PM EDT
In force: 29 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

County Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 20 km from the middle of the area, began a volume at 03:03 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.

What was reported inside it

Time	Report	Where	Remark
Jul 4, 11:03 PM EDT	TSTM WND DMG	Plumstead Twp, NJ	SOME TREES AND WIRES DOWN IN PLUMSTEAD TOWNSHIP.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 3.0 hours before the alert went out and 159 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1802 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1100 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 189 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

810 
WUUS51 KPHI 050301
SVRPHI
NJC029-050400-
/O.NEW.KPHI.SV.W.0072.120705T0301Z-120705T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1101 PM EDT WED JUL 4 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OCEAN COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF TOMS RIVER...

* UNTIL MIDNIGHT EDT

* AT 1059 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  LAKEHURST...OR 10 MILES NORTHWEST OF TOMS RIVER...AND MOVING       
  SOUTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BAMBER LAKE AND PLEASANT PLAINS AROUND 1110 PM EDT...
  BEACHWOOD AND TOMS RIVER AROUND 1115 PM EDT...
  BARNEGAT LIGHT AND HARVEY CEDARS AROUND 1140 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 3989 7408 3977 7408 3960 7419 3954 7424
      4007 7454 4017 7439 4001 7404
TIME...MOT...LOC 0300Z 320DEG 29KT 4001 7434

$$

GORSE

2 follow-up statements

497 
WWUS51 KPHI 050317
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1117 PM EDT WED JUL 4 2012

NJC029-050400-
/O.CON.KPHI.SV.W.0072.000000T0000Z-120705T0400Z/
OCEAN NJ-
1117 PM EDT WED JUL 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT
FOR OCEAN COUNTY...

AT 1112 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HAIL UP TO 
QUARTER SIZE...AND DAMAGING WINDS TO 60 MPH. THIS STORM WAS 
LOCATED NEAR PINE RIDGE AT CRESTWOOD...OR 6 MILES WEST OF TOMS 
RIVER...MOVING SOUTHEAST AT 25 MPH. DOPPLER RADAR DATA INDICATED 
THAT A DOWNBURST OF DAMAGING WINDS WAS OCCURRING WITH THIS STORM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS 
IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE 
ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 4014 7433 4001 7404 3989 7408 3977 7408
      3960 7419 3954 7424 4003 7452
TIME...MOT...LOC 0316Z 317DEG 23KT 3994 7428

$$

GORSE

296 
WWUS51 KPHI 050330
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1130 PM EDT WED JUL 4 2012

NJC029-050340-
/O.CAN.KPHI.SV.W.0072.000000T0000Z-120705T0400Z/
OCEAN NJ-
1130 PM EDT WED JUL 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR OCEAN COUNTY IS CANCELLED...

THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED, THEREFORE 
THE WARNING HAS BEEN CANCELLED. THIS STORM HOWEVER WILL PRODUCE 
DOWNPOURS, CLOUD TO GROUND LIGHTNING AND WIND GUSTS UP TO 35 MPH.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 4014 7433 4001 7404 3989 7408 3977 7408
      3960 7419 3954 7424 4003 7452
TIME...MOT...LOC 0330Z 317DEG 23KT 3987 7420

$$

GORSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 10:23 PM EDT	Special Weather Statement	PHI	Mercer	37 min
Jul 4, 10:52 PM EDT	Special Weather Statement	PHI	Ocean	38 min
Jul 4, 11:14 PM EDT	Special Weather Statement	PHI	Mercer	46 min
Jul 5, 12:08 AM EDT	Special Weather Statement	PHI	Burlington, Mercer	37 min
Jul 5, 12:34 AM EDT	Special Weather Statement	PHI	Burlington, Ocean	41 min
Jul 5, 12:35 AM EDT	Special Weather Statement	PHI	Burlington, Ocean	40 min
Jul 5, 1:00 AM EDT	Special Marine Warning	PHI		51 min
Jul 5, 1:15 AM EDT	Special Weather Statement	PHI	Atlantic, Ocean	60 min
Jul 5, 1:39 AM EDT	Special Weather Statement	PHI	Cape May, Cumberland	66 min
Jul 5, 4:28 AM EDT	Excessive Heat Watch	PHI	Atlantic, Cape May, Cumberland, Salem	24 hr
Jul 5, 3:53 PM EDT	Coastal Flood Statement	PHI	Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more	9 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2012 Every severe thunderstorm warning in 2012

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; radar from the NEXRAD Level II archive.