Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 153, NWS Philadelphia/Mount Holly

July 7, 2011Monmouth County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 7, 2011, 4:48 PM EDT for Monmouth County, Ocean County, New Jersey. It was in force for 57 min. 4 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: Jul 7, 2011, 4:48 PM EDT (20:48 UTC)
Expired: Jul 7, 2011, 5:45 PM EDT
In force: 57 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 27 km from the middle of the area, began a volume at 20:51 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 7, 4:48 PM EDT	HAIL 0.5	Cream Ridge, NJ
Jul 7, 4:55 PM EDT	TSTM WND DMG	Clarksburg, NJ	TREES AND WITRES REPORTED DOWN.
Jul 7, 5:10 PM EDT	TSTM WND DMG	Jackson Twp, NJ	TREES AND WIRES REPORTED DOWN.
Jul 7, 5:30 PM EDT	TSTM WND DMG	East Freehold, NJ	TREES AND WIRES REPORTED DOWN.

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 12:00Z, 8.8 hours before the alert went out and 143 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: 1080 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 1033 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

942 
WUUS51 KPHI 072048
SVRPHI
NJC025-029-072145-
/O.NEW.KPHI.SV.W.0153.110707T2048Z-110707T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
448 PM EDT THU JUL 7 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  NORTHERN OCEAN COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 545 PM EDT

* AT 443 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
  CREAM RIDGE...OR 12 MILES SOUTHEAST OF TRENTON...AND MOVING EAST AT
  25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ROOSEVELT AROUND 455 PM EDT...
  SIX FLAGS THEME PARK AND CLARKSBURG AROUND 500 PM EDT...
  CASSVILLE AROUND 505 PM EDT...
  JACKSONS MILLS AROUND 515 PM EDT...
  WEST FREEHOLD AROUND 520 PM EDT...
  FREEWOOD ACRES AND ADELPHIA AROUND 525 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

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 GREATEST KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...HEAVY RAIN WILL OCCUR
WITH THESE STORMS AND CAUSE LOW-LYING AND POOR DRAINAGE FLOODING.

&&

LAT...LON 4016 7400 4010 7402 4005 7402 4003 7404
      4007 7456 4016 7462 4018 7460 4017 7458
      4021 7455 4028 7440 4042 7397
TIME...MOT...LOC 2048Z 265DEG 20KT 4016 7452

$$
NIERENBERG

1 follow-up statement

475 
WWUS51 KPHI 072133
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
533 PM EDT THU JUL 7 2011

NJC025-029-072145-
/O.CON.KPHI.SV.W.0153.000000T0000Z-110707T2145Z/
MONMOUTH NJ-OCEAN NJ-
533 PM EDT THU JUL 7 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR NORTHEASTERN OCEAN AND EASTERN MONMOUTH COUNTIES...

AT 529 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR FREEWOOD ACRES...OR 16 MILES NORTH OF TOMS RIVER...
MOVING EAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  COLLINGWOOD PARK BY 540 PM EDT...
  SHARK RIVER HILLS...WEST BELMAR...SPRING LAKE HEIGHTS AND NEPTUNE
  CITY BY 545 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 4007 7438 4011 7441 4012 7439 4016 7437
      4021 7437 4027 7432 4042 7397 4016 7400
      4010 7402 4005 7402 4003 7404
TIME...MOT...LOC 2133Z 265DEG 20KT 4018 7419

$$

TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 1:27 PM EDT	Special Weather Statement	PHI	Burlington	93 min
Jul 7, 3:11 PM EDT	Special Weather Statement	PHI	Atlantic	64 min
Jul 7, 3:15 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	45 min
Jul 7, 3:16 PM EDT	Special Marine Warning	PHI		89 min
Jul 7, 3:26 PM EDT	Severe Thunderstorm Warning	PHI	Warren	64 min
Jul 7, 3:45 PM EDT	Special Weather Statement	PHI	Mercer, Middlesex	90 min
Jul 7, 3:46 PM EDT	Special Weather Statement	PHI	Burlington	89 min
Jul 7, 3:58 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	34 min
Jul 7, 4:17 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	88 min
Jul 7, 4:19 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	46 min
Jul 7, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester	63 min
Jul 7, 5:44 PM EDT	Special Weather Statement	PHI	Burlington, Monmouth, Ocean	61 min
Jul 7, 6:10 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	40 min
Jul 7, 6:46 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Somerset	74 min
Jul 7, 6:48 PM EDT	Special Weather Statement	PHI	Camden	57 min
Jul 7, 7:32 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Cape May, Cumberland, Salem	88 min
Jul 7, 7:49 PM EDT	Special Weather Statement	PHI	Mercer	86 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2011 Every severe thunderstorm warning in 2011

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.