Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 49, NWS Philadelphia/Mount Holly

June 13, 20147 counties in New Jersey; Bucks County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 13, 2014, 3:38 PM EDT for 7 counties in New Jersey; Bucks County, Northampton County, Pennsylvania. It was in force for 52 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: Jun 13, 2014, 3:38 PM EDT (19:38 UTC)
Expired: Jun 13, 2014, 4:30 PM EDT
In force: 52 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

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

The radar

The Philadelphia radar (KDIX), 75 km from the middle of the area, began a volume at 19:41 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
Jun 13, 3:54 PM EDT	TSTM WND DMG	Franklin, NJ	LARGE LIMBS DOWN..
Jun 13, 3:54 PM EDT	TSTM WND DMG	Franklin, NJ	LARGE LIMBS DOWN.
Jun 13, 4:20 PM EDT	TSTM WND GST 55	Chester, NJ	ESTIMATED WIND GUST OF 50 TO 60 MPH.
Jun 13, 4:30 PM EDT	TSTM WND DMG	Randolph Twp, NJ	TREES DOWN IN RANDOLPH TOWNSHIP.

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, 7.6 hours before the alert went out and 151 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: 101 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 502 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

789 
WUUS51 KPHI 131938
SVRPHI
NJC019-021-023-025-027-035-041-PAC017-095-132030-
/O.NEW.KPHI.SV.W.0049.140613T1938Z-140613T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
338 PM EDT FRI JUN 13 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WARREN COUNTY IN NORTHWEST NEW JERSEY...
  HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  MERCER COUNTY IN CENTRAL NEW JERSEY...
  MORRIS COUNTY IN NORTHERN NEW JERSEY...
  SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  EASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
  EAST CENTRAL NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
  MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  CENTRAL MONMOUTH COUNTY IN CENTRAL NEW JERSEY...

* UNTIL 430 PM EDT

* AT 333 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF THUNDERSTORMS CYCLING UPWARD TOWARD SEVERE 
  LEVELS AGAIN. THIS LINE OF DEVELOPING SEVERE STORMS EXTENDED FROM
  ROXBURG TO BLOOMSBURY TO BYRAM...MOVING EAST AT 25 MPH. THESE
  STORMS ARE CAPABLE OF PRODUCING DAMAGING WIND GUSTS AND HAIL. 
  WIND GUSTS OF BETWEEN 50 AND 60 MPH OCCURRED AS THIS LINE WENT
  THROUGH THE LEHIGH VALLEY.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  NEWTOWN AND LANGHORNE AROUND 340 PM EDT...
  OXFORD AND WASHINGTON AROUND 345 PM EDT...
  WOODSIDE AND LEVITTOWN AROUND 350 PM EDT...
  YARDLEY AND SAND BROOK AROUND 355 PM EDT...
  GREAT MEADOWS-VIENNA AND FLEMINGTON AROUND 400 PM EDT...
  HACKETTSTOWN AND LEBANON AROUND 405 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

HEAVY RAIN WILL OCCUR AND BE ON THE ALERT FOR POSSIBLE FLASH FLOOD
WARNINGS.

&&

LAT...LON 4017 7469 4018 7471 4017 7472 4012 7495
      4085 7521 4093 7479 4091 7477 4090 7470
      4092 7465 4096 7463 4100 7447 4073 7438
      4068 7445 4067 7440 4060 7444 4061 7434
      4027 7422
TIME...MOT...LOC 1934Z 255DEG 21KT 4078 7506 4064 7506
          4044 7507

$$

TFG

2 follow-up statements

519 
WWUS51 KPHI 131949
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
349 PM EDT FRI JUN 13 2014

NJC025-131957-
/O.CAN.KPHI.SV.W.0049.000000T0000Z-140613T2030Z/
MONMOUTH NJ-
349 PM EDT FRI JUN 13 2014

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

THE SEVERE THUNDERSTORMS ARE CONGEALING FARTHER TO THE NORTH AND 
SHOULD PASS NORTH OF THE COUNTY. 
 

LAT...LON 4058 7436 4043 7451 4037 7460 4032 7465
      4027 7475 4012 7494 4012 7495 4085 7521
      4093 7479 4091 7477 4090 7470 4092 7465
      4096 7463 4100 7447 4073 7438 4068 7445
      4067 7440 4060 7444
TIME...MOT...LOC 1947Z 255DEG 21KT 4088 7489 4071 7486
          4057 7485 4045 7489 4036 7500

$$

NJC019-021-023-027-035-041-PAC017-095-132030-
/O.CON.KPHI.SV.W.0049.000000T0000Z-140613T2030Z/
WARREN NJ-HUNTERDON NJ-MERCER NJ-MORRIS NJ-SOMERSET NJ-BUCKS PA-
NORTHAMPTON PA-MIDDLESEX NJ-
349 PM EDT FRI JUN 13 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR NORTHWESTERN MIDDLESEX...EAST CENTRAL NORTHAMPTON...EASTERN
BUCKS...SOMERSET...MORRIS...NORTHWESTERN MERCER...HUNTERDON AND
SOUTHERN WARREN COUNTIES...

AT 346 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS TO 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM GREAT MEADOWS-VIENNA TO CALIFON TO FLEMINGTON TO SAND
BROOK TO NEW HOPE...OR ALONG A LINE EXTENDING FROM 14 MILES SOUTHWEST
OF NEWTON TO 17 MILES NORTHWEST OF SOMERVILLE TO 13 MILES WEST OF
SOMERVILLE TO 17 MILES SOUTHWEST OF SOMERVILLE TO 16 MILES NORTHWEST
OF TRENTON...MOVING EAST AT 25 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  ALLAMUCHY-PANTHER VALLEY...WOODBOURNE...LAMBERTVILLE AND
  HACKETTSTOWN BY 355 PM EDT...
  WOODSIDE...YARDLEY...WASHINGTON CROSSING AND LONG VALLEY BY 400 PM
  EDT...
  EWING AND BUDD LAKE BY 405 PM EDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

IN ADDITION TO DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING AND HEAVY RAIN IS OCCURRING WITH THIS STORM. 
MOVE INDOORS IMMEDIATELY. REMEMBER...IF YOU CAN HEAR THUNDER...
YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

BE ON THE ALERT FOR FLOODING.

LAT...LON 4058 7436 4043 7451 4037 7460 4032 7465
      4027 7475 4012 7494 4012 7495 4085 7521
      4093 7479 4091 7477 4090 7470 4092 7465
      4096 7463 4100 7447 4073 7438 4068 7445
      4067 7440 4060 7444
TIME...MOT...LOC 1947Z 255DEG 21KT 4088 7489 4071 7486
          4057 7485 4045 7489 4036 7500

$$

TFG

663 
WWUS51 KPHI 132011
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
411 PM EDT FRI JUN 13 2014

NJC019-021-023-027-035-041-PAC017-095-132030-
/O.CON.KPHI.SV.W.0049.000000T0000Z-140613T2030Z/
WARREN NJ-HUNTERDON NJ-MERCER NJ-MORRIS NJ-SOMERSET NJ-BUCKS PA-
NORTHAMPTON PA-MIDDLESEX NJ-
411 PM EDT FRI JUN 13 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR NORTHWESTERN MIDDLESEX...EAST CENTRAL NORTHAMPTON...EASTERN
BUCKS...SOMERSET...MORRIS...NORTHWESTERN MERCER...HUNTERDON AND
SOUTHERN WARREN COUNTIES...

AT 407 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING DAMAGING WINDS TO 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM NETCONG TO PEAPACK AND GLADSTONE
TO BRIDGEWATER TO CLOVERHILL TO HOPEWELL...OR ALONG A LINE EXTENDING
FROM 10 MILES SOUTH OF NEWTON TO 13 MILES NORTHWEST OF SOMERVILLE TO
SOMERVILLE TO 9 MILES SOUTHWEST OF SOMERVILLE TO 13 MILES NORTHWEST
OF TRENTON...MOVING EAST AT 25 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  SUCCASUNNA...RARITAN...PEAPACK AND GLADSTONE AND FLAGTOWN BY 415 PM
  EDT...
  LAWRENCEVILLE...FAR HILLS...BERNARDSVILLE AND SOMERVILLE BY 420 PM
  EDT...
  MANVILLE AND WHARTON BY 425 PM EDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

LAT...LON 4058 7436 4043 7451 4037 7460 4032 7465
      4027 7475 4012 7494 4012 7495 4085 7521
      4093 7479 4091 7477 4090 7470 4092 7465
      4096 7463 4100 7447 4073 7438 4068 7445
      4067 7440 4060 7444
TIME...MOT...LOC 2009Z 255DEG 21KT 4091 7472 4074 7470
          4060 7469 4048 7473 4039 7484

$$

TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 3:25 AM EDT	Special Weather Statement	PHI	Hunterdon	65 min
Jun 13, 4:28 AM EDT	Special Weather Statement	PHI	Hunterdon, Sussex, Warren	62 min
Jun 13, 8:32 AM EDT	Areal Flood Advisory	PHI	Morris, Sussex, Warren	118 min
Jun 13, 11:54 AM EDT	Flash Flood Watch	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 5 more	11 hr
Jun 13, 2:00 PM EDT	Special Marine Warning	PHI		90 min
Jun 13, 2:16 PM EDT	Special Weather Statement	PHI	Warren	119 min
Jun 13, 2:52 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Sussex, Warren	4 hr
Jun 13, 3:14 PM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	2 hr
Jun 13, 3:16 PM EDT	Areal Flood Advisory	PHI	Camden, Gloucester, Hunterdon, Mercer, Salem, Somerset	4 hr
Jun 13, 3:36 PM EDT	Small Craft Advisory for Hazardous Seas	PHI		6 hr
Jun 13, 3:46 PM EDT	Flash Flood Warning	PHI	Morris, Somerset	4 hr
Jun 13, 3:52 PM EDT	Special Weather Statement	PHI	Camden, Gloucester, Mercer, Middlesex, Salem	53 min
Jun 13, 4:06 PM EDT	Special Marine Warning	PHI		54 min
Jun 13, 4:18 PM EDT	Flash Flood Warning	PHI	Sussex, Warren	4 hr
Jun 13, 4:27 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Somerset, Sussex	63 min
Jun 13, 4:58 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	23 min
Jun 13, 5:04 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Cumberland, Gloucester, Mercer, Middlesex and 3 more	4 hr
Jun 13, 5:08 PM EDT	Special Weather Statement	PHI	Middlesex	37 min
Jun 13, 5:24 PM EDT	Flash Flood Warning	PHI	Middlesex	4 hr
Jun 13, 5:36 PM EDT	Special Weather Statement	PHI	Monmouth	54 min
Jun 13, 6:24 PM EDT	Areal Flood Warning	PHI	Hunterdon	4 hr
Jun 13, 6:26 PM EDT	Special Weather Statement	PHI	Monmouth, Ocean	94 min
Jun 13, 6:46 PM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more	6 hr
Jun 13, 6:55 PM EDT	Areal Flood Advisory	PHI	Monmouth, Ocean	4 hr
Jun 13, 4:46 AM EDT	Areal Flood Advisory	PHI	Berks, Chester, Lehigh, Montgomery	3 hr
Jun 13, 6:17 AM EDT	River Flood Warning	PHI	Chester	4 hr
Jun 13, 6:41 AM EDT	Areal Flood Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery	15 hr
Jun 13, 12:36 PM EDT	Special Weather Statement	PHI	Berks	69 min
Jun 13, 1:25 PM EDT	Flash Flood Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	4 hr
Jun 13, 1:48 PM EDT	Flash Flood Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery	4 hr
Jun 13, 1:48 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	57 min
Jun 13, 2:34 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery	48 min
Jun 13, 2:42 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh, Northampton	63 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2014 Severe Thunderstorm Warnings in Pennsylvania, 2014 Every 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.