Alert archive / New Jersey / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 106, NWS Philadelphia/Mount Holly

September 12, 20134 counties in New Jersey; Monroe County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 12, 2013, 6:07 PM EDT for 4 counties in New Jersey; Monroe County, Northampton County, Pennsylvania. It was in force for 68 min. 10 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 12, 2013, 6:07 PM EDT (22:07 UTC)
Expired
Sep 12, 2013, 7:15 PM EDT
In force
68 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Hunterdon County, NJ, Morris County, NJ, Sussex County, NJ, Warren County, NJ, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 128 km from the middle of the area, began a volume at 22:10 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 12, 6:20 PM EDTTSTM WND DMGAllamuchy Twp, NJDAMAGE TO A SMALL FARM STAND.
Sep 12, 6:20 PM EDTTSTM WND DMGHope, NJTORRENTIAL RAIN...TREES DOWN...FARM DAMAGE....PEA SIZE HAIL ALSO REPORTED.
Sep 12, 6:20 PM EDTTSTM WND DMGHope, NJTREES DOWN AND A FARM DAMAGED.
Sep 12, 6:20 PM EDTHAIL 0.25Hope, NJPEA SIZE HAIL REPORTED IN HOPE.
Sep 12, 6:20 PM EDTHAIL 0.25Hope, NJTORRENTIAL RAIN...TREES DOWN...FARM DAMAGE.
Sep 12, 6:22 PM EDTTSTM WND DMGBelvidere, NJTREE FELL ON A VAN
Sep 12, 6:25 PM EDTTSTM WND DMGGreen Twp, NJTREES AND WIRES DOWN BETWEEN KENNEDY ROAD IN GREEN TOWNSHIP AND JOHNSONBURG ROAD IN ALLAMUCHY. MANY ROADS ARE BLOCKED.
Sep 12, 6:35 PM EDTTSTM WND DMGOgdensburg, NJSEVERAL TREES DOWN ACROSS COUNTY ROUTE 517 FROM SPARTA TO OGDENSBURG.
Sep 12, 6:35 PM EDTTSTM WND DMGSparta, NJSEVERAL TREES DOWN RESULTING IN ROAD CLOSURES. SIDING TORN OFF OF SOME HOMES. ABOUT 5000 CUSTOMERS WITHOUT POWER.
Sep 12, 6:48 PM EDTTSTM WND DMGJefferson Twp, NJ*** 1 INJ *** TREE HIT A MOTORCYCLE RIDER...BROOKSHIRE ROAD INTERSECTION DOVER AND MILTON ROAD

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 12, 2:50 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.1 hours before the alert went out and 157 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 2013-09-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1195 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 2013-09-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.193958Sfc1 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
1195 J/kg
Mixed-layer CIN
-77 J/kg
Mixed-layer LCL
836 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

703 
WUUS51 KPHI 122207
SVRPHI
NJC019-027-037-041-PAC089-095-122315-
/O.NEW.KPHI.SV.W.0106.130912T2207Z-130912T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
607 PM EDT THU SEP 12 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WARREN COUNTY IN NORTHWEST NEW JERSEY...
  NORTHWESTERN HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  NORTHERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
  SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
  SOUTHEASTERN MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  EASTERN NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...

* UNTIL 715 PM EDT

* AT 606 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
  PORTLAND TO WASHINGTON...MOVING NORTHEAST AT 40 MPH. THESE STORMS
  ARE CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  HOPE AROUND 615 PM EDT...
  ECHO LAKE AND WERRY LAKE AROUND 620 PM EDT...
  MILLBROOK AND BUDD LAKE AROUND 625 PM EDT...
  FLATBROOKVILLE AND SUCCASUNNA AROUND 630 PM EDT...
  FIVE POINTS AND CRANDON LAKES AROUND 635 PM EDT...
  LAKE MOHAWK AND WHARTON AROUND 640 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS LINE OF
SEVERE THUNDERSTORMS. WHEN THUNDER ROARS...MOVE INDOORS! REMEMBER...
IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR NORTHEAST NEW JERSEY. A SEVERE THUNDERSTORM
WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM EDT THURSDAY EVENING FOR
DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND EASTERN
PENNSYLVANIA.

&&

LAT...LON 4121 7437 4109 7450 4104 7450 4105 7445
      4102 7443 4103 7442 4100 7431 4063 7500
      4062 7522 4097 7530 4114 7507 4109 7503
      4118 7489 4123 7487 4132 7480 4136 7471
TIME...MOT...LOC 2207Z 233DEG 35KT 4092 7512 4077 7495

$$

MEOLA
2 follow-up statements
819 
WWUS51 KPHI 122229
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
629 PM EDT THU SEP 12 2013

NJC019-PAC089-095-122239-
/O.CAN.KPHI.SV.W.0106.000000T0000Z-130912T2315Z/
HUNTERDON NJ-MONROE PA-NORTHAMPTON PA-
629 PM EDT THU SEP 12 2013

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN NORTHAMPTON...
SOUTHEASTERN MONROE AND NORTHWESTERN HUNTERDON COUNTIES IS
CANCELLED...

THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS MOVED OUT
OF THE AREA...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.

LAT...LON 4121 7437 4109 7450 4104 7450 4105 7445
      4102 7443 4103 7442 4100 7432 4075 7477
      4107 7501 4109 7496 4109 7499 4111 7499
      4118 7489 4132 7480 4136 7471
TIME...MOT...LOC 2229Z 233DEG 35KT 4109 7494 4077 7464

$$

NJC027-037-041-122315-
/O.CON.KPHI.SV.W.0106.000000T0000Z-130912T2315Z/
WARREN NJ-MORRIS NJ-SUSSEX NJ-
629 PM EDT THU SEP 12 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR SUSSEX...NORTHERN MORRIS AND NORTHEASTERN WARREN COUNTIES...

AT 627 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING ONE INCH
DIAMETER HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM MILLBROOK TO 6 MILES EAST OF
LONG VALLEY...MOVING NORTHEAST AT 40 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
SUCCASUNNA AND CRANDON LAKES AROUND 635 PM EDT...
LAKE MOHAWK AND HOPATCONG AROUND 640 PM EDT...
HAINESVILLE AND WHITE MEADOW LAKE AROUND 645 PM EDT...
MONTAGUE AND LAKE TELEMARK AROUND 650 PM EDT...
SUSSEX AND HAMBURG AROUND 655 PM EDT...
HIGH POINT AND KINNELON AROUND 700 PM EDT...

LAT...LON 4121 7437 4109 7450 4104 7450 4105 7445
      4102 7443 4103 7442 4100 7432 4075 7477
      4107 7501 4109 7496 4109 7499 4111 7499
      4118 7489 4132 7480 4136 7471
TIME...MOT...LOC 2229Z 233DEG 35KT 4109 7494 4077 7464

$$

FORECASTER:  AMC
726 
WWUS51 KPHI 122307
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
707 PM EDT THU SEP 12 2013

NJC027-037-041-122317-
/O.EXP.KPHI.SV.W.0106.000000T0000Z-130912T2315Z/
WARREN NJ-MORRIS NJ-SUSSEX NJ-
707 PM EDT THU SEP 12 2013

...THE SEVERE THUNDERSTORM WARNING FOR SUSSEX...NORTHERN MORRIS AND
NORTHEASTERN WARREN COUNTIES WILL EXPIRE AT 715 PM EDT...

THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR NORTHEAST NEW JERSEY. A SEVERE THUNDERSTORM
WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM EDT THURSDAY EVENING FOR
DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND SOUTHEAST
PENNSYLVANIA.

LAT...LON 4121 7437 4109 7450 4104 7450 4105 7445
      4102 7443 4103 7442 4100 7432 4075 7477
      4107 7501 4109 7496 4109 7499 4111 7499
      4118 7489 4132 7480 4136 7471
TIME...MOT...LOC 2307Z 233DEG 35KT 4131 7455 4099 7425

$$

MEOLA

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 12, 6:43 AM EDTSpecial Weather StatementPHIHunterdon62 min
Sep 12, 7:38 AM EDTAreal Flood AdvisoryPHIHunterdon3 hr
Sep 12, 8:16 AM EDTFlash Flood WarningPHIHunterdon3 hr
Sep 12, 11:15 AM EDTSpecial Weather StatementPHIHunterdon, Morris, Somerset60 min
Sep 12, 11:35 AM EDTSevere Thunderstorm WarningPHIHunterdon, Morris, Somerset55 min
Sep 12, 1:19 PM EDTSpecial Weather StatementPHIMonmouth56 min
Sep 12, 3:13 PM EDTSpecial Weather StatementPHIMonmouth62 min
Sep 12, 5:38 PM EDTSmall Craft AdvisoryPHI7 hr
Sep 12, 6:00 PM EDTSpecial Weather StatementPHIMorris, Sussex, Warren90 min
Sep 12, 6:35 PM EDTSpecial Weather StatementPHIMiddlesex55 min
Sep 12, 6:43 PM EDTSpecial Weather StatementPHIBurlington, Camden, Gloucester, Hunterdon, Mercer, Somerset62 min
Sep 12, 7:28 PM EDTSpecial Weather StatementPHIBurlington, Middlesex, Monmouth62 min
Sep 12, 2:26 PM EDTSpecial Weather StatementPHICarbon, Monroe64 min
Sep 12, 3:43 PM EDTSpecial Weather StatementPHIBerks62 min
Sep 12, 4:21 PM EDTSpecial Weather StatementPHIBerks, Carbon, Lehigh, Monroe, Northampton84 min
Sep 12, 4:40 PM EDTSevere Thunderstorm WarningPHIBerks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more95 min
Sep 12, 5:47 PM EDTSevere Thunderstorm WarningPHIChester, Delaware58 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2013Severe Thunderstorm Warnings in Pennsylvania, 2013Every severe thunderstorm warning in 2013

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.