Alert archive / New Jersey / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 145, NWS Philadelphia/Mount Holly

September 16, 20107 counties in New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 16, 2010, 4:55 PM EDT for 7 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 80 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 16, 2010, 4:55 PM EDT (20:55 UTC)
Expired
Sep 16, 2010, 6:15 PM EDT
In force
80 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Burlington County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Somerset County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 64 km from the middle of the area, began a volume at 20:55 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

TimeReportWhereRemark
Sep 16, 5:15 PM EDTTSTM WND GST 73Perth Amboy, NJ73 MPH WIND GUST MEASURED AT PERTH AMBOY.
Sep 16, 5:17 PM EDTTSTM WND DMGPerth Amboy, NJTREES DOWN AND BROKEN WINDOWS REPORTED IN PERTH AMBOY.
Sep 16, 5:20 PM EDTFUNNEL CLOUDOld Bridge, NJPOSSIBLE FUNNEL CLOUD SIGHTED ALONG ROUTE 9 NEAR OLD BRIDGE.
Sep 16, 5:20 PM EDTTSTM WND DMGWoodbridge, NJWIRES AND LARGE TREE BRANCHES DOWN NEAR WOODBRIDGE. ALSO POWER OUTAGES AND SOME URBAN FLOODING REPORTED AT SEVERAL LOCATIONS IN THE COUNTY.
Sep 16, 5:22 PM EDTTSTM WND DMGRobertsville, NJTREES AND WIRES DOWN AT NUMEROUS LOCATIONS THROUGHOUT MONMOUTH COUNTY.
Sep 16, 5:40 PM EDTTSTM WND GST 45Sandy Hook, NJA 45 MPH THUNDERSTORM WIND GUST WAS MEASURED AT SANDY HOOK.

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, 8.9 hours before the alert went out and 123 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 2010-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2010-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1147 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
73 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.

191 
WUUS51 KPHI 162055
SVRPHI
NJC005-019-021-023-025-027-035-PAC017-162215-
/O.NEW.KPHI.SV.W.0145.100916T2055Z-100916T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
455 PM EDT THU SEP 16 2010

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MERCER COUNTY IN CENTRAL NEW JERSEY...
  THIS INCLUDES THE CITY OF TRENTON...
  NORTHERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  THIS INCLUDES THE CITY OF SANDY HOOK...
  MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  THIS INCLUDES THE CITIES OF...PERTH AMBOY...NEW BRUNSWICK...
  SOUTHEASTERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
  SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF SOMERVILLE...
  EAST CENTRAL HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
  NORTH CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 615 PM EDT

* AT 451 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
  WERE LOCATED ALONG A LINE EXTENDING FROM BRIDGEWATER TO FLORENCE...
  OR ALONG A LINE EXTENDING FROM 6 MILES NORTHWEST OF SOMERVILLE TO 6
  MILES SOUTH OF TRENTON...AND MOVING EAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  BASKING RIDGE...MARTINSVILLE...CROSSWICKS AND SOMERVILLE AROUND 500
  PM EDT...
  WINDSOR...SOUTH BRUNSWICK...MILLINGTON AND EDINBURG AROUND 505 PM
  EDT...
  IMLAYSTOWN AND SOMERSET AROUND 510 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! LIGHTNING IS ONE OF NATURES GREATEST KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4030 7397 4005 7486 4070 7475 4082 7434
      4073 7437 4067 7445 4065 7445 4066 7440
      4059 7444 4059 7420 4055 7424 4047 7427
      4044 7420 4046 7412 4041 7400 4042 7399
      4047 7401 4047 7399 4041 7396
TIME...MOT...LOC 2054Z 249DEG 37KT 4065 7464 4015 7475

$$

SZATKOWSKI
1 follow-up statement
248 
WWUS51 KPHI 162119
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
519 PM EDT THU SEP 16 2010

NJC019-PAC017-162128-
/O.CAN.KPHI.SV.W.0145.000000T0000Z-100916T2215Z/
HUNTERDON NJ-BUCKS PA-
519 PM EDT THU SEP 16 2010

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BUCKS AND EAST
CENTRAL HUNTERDON COUNTIES IS CANCELLED...

THE LINE OF THUNDERSTORMS THAT PROMPTED THE WARNING HAS MOVED OUT OF 
THE AREA, THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4030 7397 4009 7475 4048 7451 4075 7443
      4073 7437 4067 7445 4065 7445 4066 7440
      4059 7444 4059 7420 4055 7424 4047 7427
      4044 7420 4046 7412 4041 7400 4042 7399
      4047 7401 4047 7399 4041 7396
TIME...MOT...LOC 2118Z 249DEG 37KT 4073 7418 4043 7433
          4024 7445

$$

NJC005-021-023-025-027-035-162215-
/O.CON.KPHI.SV.W.0145.000000T0000Z-100916T2215Z/
MORRIS NJ-SOMERSET NJ-MERCER NJ-MIDDLESEX NJ-MONMOUTH NJ-
BURLINGTON NJ-
519 PM EDT THU SEP 16 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTH CENTRAL BURLINGTON...NORTHERN MONMOUTH...MIDDLESEX...
SOUTHEASTERN MERCER...EAST CENTRAL SOMERSET AND SOUTHEASTERN MORRIS
COUNTIES...

AT 513 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM 9 MILES NORTH OF CARTERET TO
SPOTSWOOD TO ROOSEVELT...OR ALONG A LINE EXTENDING FROM ELIZABETH TO
6 MILES SOUTHEAST OF NEW BRUNSWICK TO 13 MILES EAST OF TRENTON...
MOVING EAST AT 50 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  YORKETOWN...ROBERTSVILLE...LAURENCE HARBOR AND ENGLISHTOWN BY 525
  PM EDT...
  MORGANVILLE...WEST FREEHOLD...STRATHMORE AND MATAWAN BY 530 PM
  EDT...
  UNION BEACH AND MARLBORO BY 535 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...FREQUENT 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 4030 7397 4009 7475 4048 7451 4075 7443
      4073 7437 4067 7445 4065 7445 4066 7440
      4059 7444 4059 7420 4055 7424 4047 7427
      4044 7420 4046 7412 4041 7400 4042 7399
      4047 7401 4047 7399 4041 7396
TIME...MOT...LOC 2118Z 249DEG 45KT 4073 7418 4043 7433
          4024 7445

$$

GORSE

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 16, 3:46 PM EDTSpecial Weather StatementPHIMorris44 min
Sep 16, 4:36 PM EDTSevere Thunderstorm WarningPHICumberland, Gloucester, Salem54 min
Sep 16, 4:47 PM EDTSpecial Weather StatementPHIMercer, Middlesex, Somerset43 min
Sep 16, 5:14 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Salem61 min
Sep 16, 5:37 PM EDTSpecial Marine WarningPHI83 min
Sep 16, 5:41 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Monmouth, Ocean64 min
Sep 16, 6:09 PM EDTTornado WarningPHIMonmouth, Ocean36 min
Sep 16, 6:18 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Monmouth and 2 more42 min
Sep 16, 6:21 PM EDTSpecial Marine WarningPHI84 min
Sep 16, 6:57 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Cape May, Cumberland, Ocean50 min
Sep 16, 6:58 PM EDTSpecial Marine WarningPHI92 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2010Severe Thunderstorm Warnings in Pennsylvania, 2010Every severe thunderstorm warning in 2010

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.