Alert archive / New Jersey / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 102, NWS Philadelphia/Mount Holly

September 2, 2013Morris County, Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 2, 2013, 11:31 PM EDT for Morris County, Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 2, 2013, 11:31 PM EDT (03:31 UTC)
Expired: Sep 3, 2013, 12:30 AM EDT
In force: 59 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

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

The radar

The Philadelphia radar (KDIX), 111 km from the middle of the area, began a volume at 03:31 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 3.5 hours before the alert went out and 171 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: 1144 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 687 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 18 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

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

460 
WUUS51 KPHI 030331
SVRPHI
NJC027-041-PAC089-095-030430-
/O.NEW.KPHI.SV.W.0102.130903T0331Z-130903T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1131 PM EDT MON SEP 2 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL WARREN COUNTY IN NORTHWEST NEW JERSEY...
  WEST CENTRAL MORRIS COUNTY IN NORTHERN NEW JERSEY...
  SOUTH CENTRAL MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  NORTHEASTERN NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...

* UNTIL 1230 AM EDT

* AT 1128 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR BRODHEADSVILLE...MOVING
  EAST AT 25 MPH. THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  PEN ARGYL AND WIND GAP AROUND 1140 PM EDT...
  BANGOR AND STORMVILLE AROUND 1145 PM EDT...
  EAST BANGOR AND EAST STROUDSBURG AROUND 1150 PM EDT...
  DELAWARE WATER GAP AROUND 1155 PM EDT...
  COLUMBIA AROUND MIDNIGHT EDT...
  BELVIDERE AROUND 1205 AM 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 SEVERE
THUNDERSTORM. WHEN THUNDER ROARS...MOVE INDOORS! REMEMBER...IF YOU
CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 4091 7477 4092 7473 4090 7471 4090 7469
      4075 7470 4077 7487 4078 7488 4078 7491
      4083 7543 4100 7543 4101 7487
TIME...MOT...LOC 0331Z 269DEG 24KT 4091 7535

$$

FORECASTER: HEAVENER

3 follow-up statements

790 
WWUS51 KPHI 030359
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1159 PM EDT MON SEP 2 2013

PAC089-030410-
/O.CAN.KPHI.SV.W.0102.000000T0000Z-130903T0430Z/
MONROE PA-
1159 PM EDT MON SEP 2 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MONROE COUNTY 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 4091 7477 4092 7473 4090 7469 4075 7470
      4077 7486 4078 7488 4083 7535 4090 7523
      4091 7524 4094 7520 4095 7515 4097 7512
      4098 7514 4100 7511 4101 7488
TIME...MOT...LOC 0400Z 269DEG 24KT 4091 7509

$$

NJC027-041-PAC095-030430-
/O.CON.KPHI.SV.W.0102.000000T0000Z-130903T0430Z/
WARREN NJ-MORRIS NJ-NORTHAMPTON PA-
1159 PM EDT MON SEP 2 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT
FOR NORTHEASTERN NORTHAMPTON...WEST CENTRAL MORRIS AND CENTRAL WARREN
COUNTIES...

AT 1157 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 PORTLAND...OR 16 MILES NORTH OF EASTON...MOVING EAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
OXFORD AROUND 1210 AM EDT...
HOPE AND BLAIRSTOWN AROUND 1215 AM EDT...
GREAT MEADOWS-VIENNA AND BEATTYESTOWN AROUND 1225 AM EDT...
ALLAMUCHY-PANTHER VALLEY AND HACKETTSTOWN AROUND 1230 AM 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! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 4091 7477 4092 7473 4090 7469 4075 7470
      4077 7486 4078 7488 4083 7535 4090 7523
      4091 7524 4094 7520 4095 7515 4097 7512
      4098 7514 4100 7511 4101 7488
TIME...MOT...LOC 0400Z 269DEG 24KT 4091 7509

$$

FORECASTER: HEAVENER

093 
WWUS51 KPHI 030415
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1215 AM EDT TUE SEP 3 2013

PAC095-030426-
/O.CAN.KPHI.SV.W.0102.000000T0000Z-130903T0430Z/
NORTHAMPTON PA-
1215 AM EDT TUE SEP 3 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NORTHAMPTON
COUNTY 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 4091 7477 4092 7473 4091 7471 4090 7471
      4090 7469 4083 7469 4084 7498 4101 7499
      4101 7488
TIME...MOT...LOC 0416Z 269DEG 24KT 4091 7495

$$

NJC027-041-030430-
/O.CON.KPHI.SV.W.0102.000000T0000Z-130903T0430Z/
WARREN NJ-MORRIS NJ-
1215 AM EDT TUE SEP 3 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT
FOR WEST CENTRAL MORRIS AND EAST CENTRAL WARREN COUNTIES...

AT 1213 AM 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 HOPE...OR 15 MILES SOUTHWEST OF NEWTON...MOVING EAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
ALLAMUCHY-PANTHER VALLEY AND GREAT MEADOWS-VIENNA AROUND 1225 AM
EDT...
BUDD LAKE AND NETCONG AROUND 1230 AM EDT...

LAT...LON 4091 7477 4092 7473 4091 7471 4090 7471
      4090 7469 4083 7469 4084 7498 4101 7499
      4101 7488
TIME...MOT...LOC 0416Z 269DEG 24KT 4091 7495

$$

FORECASTER: HEAVENER

075 
WWUS51 KPHI 030423
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1223 AM EDT TUE SEP 3 2013

NJC027-041-030434-
/O.EXP.KPHI.SV.W.0102.000000T0000Z-130903T0430Z/
WARREN NJ-MORRIS NJ-
1223 AM EDT TUE SEP 3 2013

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MORRIS AND EAST
CENTRAL WARREN COUNTIES WILL EXPIRE AT 1230 AM EDT...

THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4091 7477 4092 7473 4091 7471 4090 7471
      4090 7469 4083 7469 4084 7498 4101 7499
      4101 7488
TIME...MOT...LOC 0424Z 269DEG 24KT 4091 7488

$$

FORECASTER: HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 2, 10:51 PM EDT	Special Weather Statement	PHI	Warren	39 min
Sep 2, 11:27 PM EDT	Special Weather Statement	PHI	Warren	63 min
Sep 3, 12:22 AM EDT	Special Weather Statement	PHI	Morris	53 min
Sep 3, 12:40 AM EDT	Areal Flood Advisory	PHI	Morris, Sussex, Warren	3 hr
Sep 3, 12:47 AM EDT	Areal Flood Advisory	PHI	Morris, Sussex, Warren	3 hr
Sep 2, 8:17 PM EDT	Special Weather Statement	PHI	Chester	58 min
Sep 2, 8:56 PM EDT	Special Weather Statement	PHI	Chester	49 min
Sep 2, 8:58 PM EDT	Special Weather Statement	PHI	Chester	47 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2013 Severe Thunderstorm Warnings in Pennsylvania, 2013 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.