Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 301, NWS Philadelphia/Mount Holly

September 11, 2011Burlington County, Monmouth County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 11, 2011, 11:15 PM EDT for Burlington County, Monmouth County, Ocean County, New Jersey. It was in force for 60 min. 6 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: Sep 11, 2011, 11:15 PM EDT (03:15 UTC)
Expired: Sep 12, 2011, 12:15 AM EDT
In force: 60 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Burlington County, NJ, Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 23 km from the middle of the area, began a volume at 03:18 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
Sep 11, 11:15 PM EDT	HAIL 0.88	Hainesport, NJ
Sep 11, 11:30 PM EDT	TSTM WND DMG	Springfield, NJ	TREES AND UTILITY POLES DOWN.
Sep 11, 11:35 PM EDT	HAIL 0.88	Pemberton, NJ
Sep 11, 11:35 PM EDT	HAIL 1.25	Juliustown, NJ
Sep 11, 11:45 PM EDT	HAIL 0.88	Fort Dix, NJ
Sep 11, 11:45 PM EDT	HAIL 0.88	Wrightstown, NJ

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, 3.3 hours before the alert went out and 168 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: 30 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 549 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

494 
WUUS51 KPHI 120315
SVRPHI
NJC005-025-029-120415-
/O.NEW.KPHI.SV.W.0301.110912T0315Z-110912T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1115 PM EDT SUN SEP 11 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 1215 AM EDT

* AT 1114 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
  MOUNT HOLLY...OR 16 MILES SOUTH OF TRENTON...AND MOVING EAST AT 15
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MOUNT HOLLY AROUND 1120 PM EDT...
  JACKSONVILLE AROUND 1125 PM EDT...
  COLUMBUS AND PEMBERTON AROUND 1135 PM EDT...
  JOBSTOWN AROUND 1140 PM EDT...
  WRIGHTSTOWN AND GEORGETOWN AROUND 1150 PM EDT...
  WOODRUFF AROUND 1215 AM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...DANGEROUS 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.

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 3999 7427 3988 7487 4004 7496 4016 7466
      4013 7460 4016 7461 4018 7460 4017 7458
      4021 7455 4026 7441
TIME...MOT...LOC 0315Z 248DEG 15KT 3999 7481

$$

MPD

1 follow-up statement

623 
WWUS51 KPHI 120359
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1159 PM EDT SUN SEP 11 2011

NJC025-120409-
/O.CAN.KPHI.SV.W.0301.000000T0000Z-110912T0415Z/
MONMOUTH NJ-
1159 PM EDT SUN SEP 11 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MONMOUTH COUNTY
IS CANCELLED...

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 3999 7427 3993 7461 4002 7466 4013 7443
      4015 7435 4013 7434
TIME...MOT...LOC 0359Z 259DEG 17KT 4003 7452

$$

NJC005-029-120415-
/O.CON.KPHI.SV.W.0301.000000T0000Z-110912T0415Z/
OCEAN NJ-BURLINGTON NJ-
1159 PM EDT SUN SEP 11 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR NORTH CENTRAL BURLINGTON AND NORTHWESTERN OCEAN COUNTIES...

AT 1156 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 NEW EGYPT...OR 17 MILES SOUTHEAST OF TRENTON...MOVING
EAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  WOODRUFF BY 1210 AM EDT...
  CASSVILLE...6 MILES NORTHWEST OF LAKEHURST AND 7 MILES WEST OF
  LEISURE KNOLL BY 1215 AM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...DANGEROUS 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.

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 3999 7427 3993 7461 4002 7466 4013 7443
      4015 7435 4013 7434
TIME...MOT...LOC 0359Z 259DEG 17KT 4003 7452

$$

MPD

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 11, 10:44 PM EDT	Areal Flood Advisory	PHI	Salem	107 min
Sep 11, 10:52 PM EDT	Special Weather Statement	PHI	Mercer	83 min
Sep 11, 11:02 PM EDT	Areal Flood Advisory	PHI	Salem	103 min
Sep 11, 11:05 PM EDT	Special Weather Statement	PHI	Salem	85 min
Sep 11, 11:10 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	65 min
Sep 12, 12:17 AM EDT	Special Weather Statement	PHI	Ocean	58 min
Sep 12, 12:24 AM EDT	Severe Thunderstorm Warning	PHI	Ocean	66 min
Sep 12, 12:34 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem	56 min
Sep 12, 1:29 AM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Cumberland, Ocean	61 min
Sep 12, 1:33 AM EDT	Special Marine Warning	PHI		117 min
Sep 12, 11:05 AM EDT	Coastal Flood Statement	PHI	Burlington, Camden, Gloucester	6 hr
Sep 12, 2:15 PM EDT	Special Weather Statement	PHI	Sussex	60 min
Sep 12, 3:59 PM EDT	Special Weather Statement	PHI	Morris	91 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.