Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 114, NWS Philadelphia/Mount Holly

July 9, 2014Morris County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 9, 2014, 6:27 PM EDT for Morris County, New Jersey. It was in force for 63 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 9, 2014, 6:27 PM EDT (22:27 UTC)
Expired: Jul 9, 2014, 7:30 PM EDT
In force: 63 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

County Morris County, NJ

The radar

The Philadelphia radar (KDIX), 109 km from the middle of the area, began a volume at 22:28 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 9, 6:51 PM EDT	TSTM WND DMG	Roxbury Twp, NJ	A COUPLE OF TREES DOWN ALONG TAMARACK DRIVE AND HAWTHORN DRIVE IN ROXBURY TWP.

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 9, 4:12 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.5 hours before the alert went out and 140 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: 5 J/kg
Mixed-layer CIN: -207 J/kg
Mixed-layer LCL: 1145 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

817 
WUUS51 KPHI 092227
SVRPHI
NJC027-092330-
/O.NEW.KPHI.SV.W.0114.140709T2227Z-140709T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
627 PM EDT WED JUL 9 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN MORRIS COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 730 PM EDT

* AT 624 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR BEATTYESTOWN...MOVING EAST
  AT 45 MPH. THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL 
  AND POSSIBLY ALSO WINDS UP TO 60 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BUDD LAKE AND NETCONG AROUND 640 PM EDT...
  MOUNT ARLINGTON AND SUCCASUNNA AROUND 645 PM EDT...
  WHARTON AND DOVER AROUND 650 PM EDT...
  LAKE TELEMARK AND ROCKAWAY AROUND 655 PM EDT...
  GREEN POND AND BOONTON AROUND 700 PM EDT...
  KINNELON AROUND 705 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.

THIS SEVERE THUNDERSTORM HAS A HISTORY OF PRODUCING LARGE HAIL IN 
THE LEHIGH VALLEY. STAY AWAY FROM WINDOWS! IF TIME ALLOWS...PUT
AUTOMOBILES INTO A CARPORT OR GARAGE.

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

&&

LAT...LON 4090 7433 4086 7432 4076 7485 4079 7489
      4084 7482 4088 7481 4091 7478 4092 7466
      4097 7464 4106 7450 4103 7450 4105 7445
      4103 7443 4100 7430 4097 7428 4093 7429
      4090 7427
TIME...MOT...LOC 2226Z 248DEG 38KT 4083 7489

$$

TFG

2 follow-up statements

761 
WWUS51 KPHI 092306
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
706 PM EDT WED JUL 9 2014

NJC027-092330-
/O.CON.KPHI.SV.W.0114.000000T0000Z-140709T2330Z/
MORRIS NJ-
706 PM EDT WED JUL 9 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR NORTHEASTERN MORRIS COUNTY...

AT 704 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL.  THIS STORM WAS LOCATED NEAR DOVER...OR 14 MILES WEST OF
CALDWELL...MOVING NORTHEAST AT 40 MPH. SOME STRONG GUSTY WINDS'
BETWEEN 40 AND 50 MPH ARE ALSO POSSIBLE.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  MOUNTAIN LAKES...PARSIPPANY...WHITE MEADOW LAKE AND LAKE TELEMARK
  BY 710 PM EDT...
  BOONTON BY 715 PM EDT...
  KINNELON BY 720 PM EDT...
  PEQUANNOCK TOWNSHIP...LINCOLN PARK...RIVERDALE AND BUTLER BY 725 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 LARGE HAIL...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.

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

LAT...LON 4090 7427 4090 7433 4086 7432 4081 7459
      4089 7460 4093 7455 4097 7456 4100 7451
      4103 7443 4102 7443 4103 7442 4100 7430
      4097 7428 4093 7429
TIME...MOT...LOC 2305Z 247DEG 35KT 4087 7453

$$

TFG

311 
WWUS51 KPHI 092324
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
724 PM EDT WED JUL 9 2014

NJC027-092334-
/O.EXP.KPHI.SV.W.0114.000000T0000Z-140709T2330Z/
MORRIS NJ-
724 PM EDT WED JUL 9 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MORRIS COUNTY
WILL EXPIRE AT 730 PM EDT...

THE THUNDERSTORM IS EXITING THE COUNTY.

LAT...LON 4090 7427 4090 7433 4086 7432 4081 7459
      4089 7460 4093 7455 4097 7456 4100 7451
      4103 7443 4102 7443 4103 7442 4100 7430
      4097 7428 4093 7429
TIME...MOT...LOC 2324Z 247DEG 35KT 4094 7430

$$

TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 8:16 PM EDT	Special Marine Warning	PHI		119 min
Jul 8, 8:21 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Cumberland, Gloucester, Salem	69 min
Jul 8, 8:44 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	69 min
Jul 8, 8:56 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more	73 min
Jul 8, 9:02 PM EDT	Special Weather Statement	PHI	Atlantic, Cape May, Cumberland	58 min
Jul 8, 9:12 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	63 min
Jul 8, 9:22 PM EDT	Special Marine Warning	PHI		113 min
Jul 8, 9:48 PM EDT	Special Marine Warning	PHI		117 min
Jul 9, 8:52 AM EDT	Small Craft Advisory	PHI		12 hr
Jul 9, 2:48 PM EDT	Special Weather Statement	PHI	Sussex	72 min
Jul 9, 3:25 PM EDT	Special Weather Statement	PHI	Sussex	65 min
Jul 9, 3:28 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	49 min
Jul 9, 5:38 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	64 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.