Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 159, NWS Philadelphia/Mount Holly

September 6, 2014Mercer County, Middlesex County, Monmouth County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 6, 2014, 4:03 PM EDT for Mercer County, Middlesex County, Monmouth 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
Sep 6, 2014, 4:03 PM EDT (20:03 UTC)
Expired
Sep 6, 2014, 5:00 PM EDT
In force
57 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ

The radar

The Philadelphia radar (KDIX), 51 km from the middle of the area, began a volume at 20:04 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 6, 4:05 PM EDTMARINE TSTM WIND 40Sandy Hook, NJ
Sep 6, 4:10 PM EDTTSTM WND DMGPleasant Valley, NJSCHANCK ROAD AND PLEASANT VALLEY ROAD WERE CLOSED DUE TO DOWNED TREES. DELAYED REPORT.
Sep 6, 4:10 PM EDTMARINE TSTM WIND 45Sandy Hook, NJ
Sep 6, 4:17 PM EDTTSTM WND DMGManalapan, NJTREES DOWN ON POWERLINES

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

The watch it was issued in

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

IssuedProductOfficeLasted
Sep 6, 2:07 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.1 hours before the alert went out and 120 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 2014-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1867 joules per kilogram.LCLLFCEL10008507005003002001001 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 2014-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 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
1867 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
709 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.0

Open this sounding in Storm Lab

The text

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

831 
WUUS51 KPHI 062003
SVRPHI
NJC021-023-025-062100-
/O.NEW.KPHI.SV.W.0159.140906T2003Z-140906T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
403 PM EDT SAT SEP 6 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL MERCER COUNTY IN CENTRAL NEW JERSEY...
  SOUTHERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  MONMOUTH COUNTY IN CENTRAL NEW JERSEY...

* UNTIL 500 PM EDT

* AT 401 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
  ROBERTSVILLE TO CLEARBROOK PARK...MOVING EAST AT 20 MPH. THESE
  STORMS ARE CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  MORGANVILLE AND MATAWAN AROUND 410 PM EDT...
  YORKETOWN AND MANALAPAN AROUND 415 PM EDT...
  HOLMDEL AND KEANSBURG AROUND 420 PM EDT...
  LINCROFT AND MIDDLETOWN AROUND 425 PM EDT...
  WEST FREEHOLD AROUND 430 PM EDT...
  RED BANK AND EAST FREEHOLD AROUND 435 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE WINDS OF MORE THAN 57 MPH...OR HAIL ONE
INCH OR LARGER.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
SATURDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4018 7399 4012 7402 4010 7407 4014 7411
      4011 7413 4030 7470 4049 7429 4046 7421
      4047 7414 4042 7402 4043 7400 4047 7403
      4048 7402 4048 7401 4047 7398 4038 7396
TIME...MOT...LOC 2003Z 283DEG 19KT 4036 7429 4031 7447

$$

FORECASTER: SFJ
2 follow-up statements
363 
WWUS51 KPHI 062024
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
424 PM EDT SAT SEP 6 2014

NJC021-023-025-062100-
/O.CON.KPHI.SV.W.0159.000000T0000Z-140906T2100Z/
MERCER NJ-MIDDLESEX NJ-MONMOUTH NJ-
424 PM EDT SAT SEP 6 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR MONMOUTH...SOUTHERN MIDDLESEX AND EAST CENTRAL MERCER COUNTIES...

AT 418 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM HOLMDEL TO HIGHTSTOWN...OR
ALONG A LINE EXTENDING FROM 11 MILES WEST OF LONG BRANCH TO 13 MILES
EAST OF TRENTON...MOVING EAST AT 20 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  SHREWSBURY...RED BANK AND MANALAPAN BY 435 PM EDT...
  LITTLE SILVER AND FAIR HAVEN BY 440 PM EDT...
  OCEANPORT...MONMOUTH BEACH...RUMSON AND SEA BRIGHT BY 445 PM EDT...
  WEST LONG BRANCH BY 450 PM EDT...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
SATURDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4018 7399 4012 7402 4010 7407 4014 7411
      4011 7413 4030 7470 4049 7429 4046 7421
      4047 7414 4042 7402 4043 7400 4047 7403
      4048 7402 4048 7401 4047 7398 4038 7396
TIME...MOT...LOC 2024Z 283DEG 19KT 4033 7415 4027 7447

$$

SFJ
277 
WWUS51 KPHI 062041
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
441 PM EDT SAT SEP 6 2014

NJC021-023-025-062100-
/O.CON.KPHI.SV.W.0159.000000T0000Z-140906T2100Z/
MERCER NJ-MIDDLESEX NJ-MONMOUTH NJ-
441 PM EDT SAT SEP 6 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR MONMOUTH...SOUTHEASTERN MIDDLESEX AND EAST CENTRAL MERCER
COUNTIES...

AT 438 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM LINCROFT TO CLEARBROOK PARK...OR ALONG A LINE
EXTENDING FROM 9 MILES WEST OF LONG BRANCH TO 14 MILES SOUTH OF NEW
BRUNSWICK...MOVING EAST AT 20 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  SHREWSBURY...RED BANK...FAIR HAVEN AND MANALAPAN BY 450 PM EDT...
  LITTLE SILVER...RUMSON AND OCEANPORT BY 455 PM EDT...
  EAST FREEHOLD...FREEHOLD AND EATONTOWN BY 500 PM EDT...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
SATURDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4018 7399 4012 7402 4010 7407 4014 7411
      4011 7414 4017 7426 4017 7430 4027 7461
      4048 7426 4046 7421 4047 7414 4042 7402
      4043 7400 4048 7402 4048 7401 4047 7399
      4046 7398 4038 7396
TIME...MOT...LOC 2041Z 283DEG 19KT 4034 7413 4028 7444

$$

SFJ

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 1:37 PM EDTSpecial Weather StatementPHIWarren53 min
Sep 6, 1:46 PM EDTSpecial Weather StatementPHISussex59 min
Sep 6, 2:58 PM EDTAreal Flood AdvisoryPHIHunterdon, Mercer, Middlesex, Somerset4 hr
Sep 6, 3:19 PM EDTSpecial Weather StatementPHIMiddlesex26 min
Sep 6, 3:25 PM EDTSpecial Weather StatementPHIMercer65 min
Sep 6, 3:32 PM EDTSpecial Weather StatementPHIHunterdon58 min
Sep 6, 3:45 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer60 min
Sep 6, 4:19 PM EDTSpecial Marine WarningPHI56 min
Sep 6, 4:45 PM EDTSpecial Weather StatementPHIHunterdon, Mercer, Middlesex, Morris, Somerset60 min
Sep 6, 4:47 PM EDTSpecial Weather StatementPHIBurlington58 min
Sep 6, 4:52 PM EDTSevere Thunderstorm WarningPHICamden, Gloucester, Salem36 min
Sep 6, 4:54 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Middlesex, Monmouth, Ocean43 min
Sep 6, 4:58 PM EDTSpecial Marine WarningPHI62 min
Sep 6, 5:09 PM EDTSpecial Marine WarningPHI66 min
Sep 6, 5:26 PM EDTSpecial Marine WarningPHI64 min
Sep 6, 5:31 PM EDTSpecial Weather StatementPHIBurlington59 min
Sep 6, 5:44 PM EDTSevere Thunderstorm WarningPHIBurlington, Ocean35 min
Sep 6, 6:41 PM EDTSpecial Weather StatementPHISalem64 min
Sep 6, 7:41 PM EDTSpecial Marine WarningPHI64 min
Sep 6, 7:45 PM EDTSpecial Weather StatementPHICape May60 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2014Every severe thunderstorm warning in 2014

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.