Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 121, NWS Philadelphia/Mount Holly

July 13, 20145 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 13, 2014, 10:27 PM EDT for 5 counties in New Jersey. It was in force for 47 min. 1 report 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: Jul 13, 2014, 10:27 PM EDT (02:27 UTC)
Expired: Jul 13, 2014, 11:14 PM EDT
In force: 47 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ

The radar

The Philadelphia radar (KDIX), 105 km from the middle of the area, began a volume at 02:30 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
Jul 13, 10:45 PM EDT	TSTM WND DMG	Clinton, NJ	SCATTERED TREES AND WIRES DOWN ACROSS THE NORTHERN HALF OF THE COUNTY.

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.

Issued	Product	Office	Lasted
Jul 13, 7:49 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 2.5 hours before the alert went out and 138 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: 30 J/kg
Mixed-layer CIN: -231 J/kg
Mixed-layer LCL: 891 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 159 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

972 
WUUS51 KPHI 140227
SVRPHI
NJC019-027-035-037-041-140330-
/O.NEW.KPHI.SV.W.0121.140714T0227Z-140714T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1027 PM EDT SUN JUL 13 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN WARREN COUNTY IN NORTHWEST NEW JERSEY...
  NORTHERN HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  MORRIS COUNTY IN NORTHERN NEW JERSEY...
  NORTHERN SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  SOUTHERN SUSSEX COUNTY IN NORTHWEST NEW JERSEY...

* UNTIL 1130 PM EDT

* AT 1024 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
  MILLBROOK TO HACKETTSTOWN TO BLOOMSBURY...MOVING EAST AT 35 MPH.
  THESE STORMS ARE CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
  60 MPH. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CALIFON AND BUDD LAKE AROUND 1035 PM EDT...
  NEWTON AND LONG VALLEY AROUND 1040 PM EDT...
  SUCCASUNNA AND LAKE MOHAWK AROUND 1045 PM EDT...
  OGDENSBURG AND WHITE HOUSE STATION AROUND 1050 PM EDT...
  ROCKAWAY AND PEAPACK AND GLADSTONE AROUND 1055 PM EDT...
  LAKE TELEMARK AND FAR HILLS AROUND 1100 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.

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

THIS LINE OF SEVERE THUNDERSTORMS HAS A HISTORY OF PRODUCING WIND 
DAMAGE IN NORTHAMPTON COUNTY.  DO NOT STAY OUTDOORS. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
SUNDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4090 7433 4084 7432 4079 7436 4075 7436
      4068 7445 4062 7449 4058 7520 4088 7494
      4108 7496 4109 7450 4103 7450 4105 7445
      4102 7443 4103 7442 4101 7435 4090 7428
TIME...MOT...LOC 0226Z 269DEG 30KT 4103 7488 4088 7482
          4065 7501

$$

FORECASTER:  DRAG

2 follow-up statements

619 
WWUS51 KPHI 140253
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1053 PM EDT SUN JUL 13 2014

NJC041-140302-
/O.CAN.KPHI.SV.W.0121.000000T0000Z-140714T0330Z/
WARREN NJ-
1053 PM EDT SUN JUL 13 2014

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WARREN COUNTY IS
CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
SUNDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NEW JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4090 7433 4084 7432 4079 7436 4075 7436
      4068 7445 4062 7449 4058 7520 4071 7497
      4090 7469 4108 7467 4109 7450 4103 7450
      4105 7445 4102 7443 4101 7435 4090 7428
TIME...MOT...LOC 0252Z 278DEG 25KT 4103 7461 4088 7455
          4063 7479

$$

NJC019-027-035-037-140330-
/O.CON.KPHI.SV.W.0121.000000T0000Z-140714T0330Z/
HUNTERDON NJ-MORRIS NJ-SOMERSET NJ-SUSSEX NJ-
1053 PM EDT SUN JUL 13 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT
FOR SOUTH CENTRAL SUSSEX...NORTHERN SOMERSET...MORRIS AND NORTHERN
HUNTERDON COUNTIES...

AT 1051 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 LAKE MOHAWK TO DOVER TO WHITE HOUSE STATION...OR ALONG
A LINE EXTENDING FROM 7 MILES EAST OF NEWTON TO 15 MILES WEST OF
CALDWELL TO 11 MILES NORTHWEST OF SOMERVILLE...MOVING EAST AT 30 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  WHITE MEADOW LAKE...LAKE TELEMARK AND BERNARDSVILLE BY 1100 PM
  EDT...
  FAR HILLS...MORRISTOWN...PARSIPPANY AND MOUNTAIN LAKES BY 1105 PM
  EDT...
  HANOVER TOWNSHIP...BOONTON AND BASKING RIDGE BY 1110 PM EDT...

THESE ARE DANGEROUS STORMS. IF YOU ARE IN THEIR 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 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.

TORRENTIAL RAINS WILL CAUSE BRIEF FLOODING OF MANY HIGHWAYS AND POOR 
DRAINAGE AREAS. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
SUNDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NEW JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4090 7433 4084 7432 4079 7436 4075 7436
      4068 7445 4062 7449 4058 7520 4071 7497
      4090 7469 4108 7467 4109 7450 4103 7450
      4105 7445 4102 7443 4101 7435 4090 7428
TIME...MOT...LOC 0252Z 278DEG 25KT 4103 7461 4088 7455
          4063 7479

$$


DRAG

432 
WWUS51 KPHI 140314
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1114 PM EDT SUN JUL 13 2014

NJC019-027-035-037-140324-
/O.CAN.KPHI.SV.W.0121.000000T0000Z-140714T0330Z/
HUNTERDON NJ-MORRIS NJ-SOMERSET NJ-SUSSEX NJ-
1114 PM EDT SUN JUL 13 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL SUSSEX...
NORTHERN SOMERSET...MORRIS AND NORTHERN HUNTERDON COUNTIES IS
CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
MONDAY MORNING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NEW JERSEY AND SOUTHEASTERN PENNSYLVANIA.

LAT...LON 4090 7433 4084 7432 4079 7436 4075 7436
      4068 7445 4062 7449 4058 7520 4071 7497
      4090 7469 4108 7467 4109 7450 4103 7450
      4105 7445 4102 7443 4101 7435 4090 7428
TIME...MOT...LOC 0314Z 278DEG 25KT 4101 7441 4086 7435
          4061 7459

$$

DRAG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 9:16 PM EDT	Special Weather Statement	PHI	Warren	89 min
Jul 13, 9:33 PM EDT	Severe Thunderstorm Warning	PHI	Warren	57 min
Jul 13, 10:18 PM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Somerset	57 min
Jul 13, 10:41 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Warren	2 hr
Jul 13, 10:48 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	37 min
Jul 13, 11:05 PM EDT	Special Marine Warning	PHI		85 min
Jul 13, 11:07 PM EDT	Special Weather Statement	PHI	Hunterdon, Mercer, Somerset	38 min
Jul 13, 11:21 PM EDT	Special Weather Statement	PHI	Burlington, Camden	54 min
Jul 13, 11:27 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Middlesex, Morris, Somerset	2 hr
Jul 13, 11:47 PM EDT	Special Weather Statement	PHI	Mercer, Middlesex	43 min
Jul 14, 3:54 AM EDT	Flash Flood Watch	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more	45 hr
Jul 14, 4:02 AM EDT	Small Craft Advisory	PHI		24 hr
Jul 14, 4:08 PM EDT	Special Weather Statement	PHI	Monmouth	52 min
Jul 14, 4:12 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	63 min
Jul 14, 4:17 PM EDT	Special Weather Statement	PHI	Sussex	58 min
Jul 14, 4:21 PM EDT	Areal Flood Advisory	PHI	Morris, Sussex	3 hr
Jul 14, 4:28 PM EDT	Flash Flood Warning	PHI	Monmouth, Ocean	4 hr
Jul 14, 5:33 PM EDT	Special Weather Statement	PHI	Monmouth	57 min
Jul 14, 5:54 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Warren	4 hr
Jul 14, 6:15 PM EDT	Flash Flood Warning	PHI	Hunterdon, Morris, Sussex, Warren	4 hr
Jul 14, 6:54 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Middlesex, Somerset	3 hr
Jul 14, 7:03 PM EDT	Severe Thunderstorm Warning	PHI	Salem	42 min
Jul 14, 7:17 PM EDT	Special Weather Statement	PHI	Mercer	58 min
Jul 14, 7:29 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	46 min
Jul 14, 7:39 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Salem	3 hr
Jul 14, 7:53 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Salem	67 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 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.