Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 11, NWS Philadelphia/Mount Holly

May 10, 2014Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 10, 2014, 2:07 PM EDT for Morris County, Somerset County, New Jersey. It was in force for 38 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: May 10, 2014, 2:07 PM EDT (18:07 UTC)
Expired: May 10, 2014, 2:45 PM EDT
In force: 38 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Morris County, NJ, Somerset County, NJ

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 6.1 hours before the alert went out and 135 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1061 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 111 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.

814 
WUUS51 KPHI 101807
SVRPHI
NJC027-035-101845-
/O.NEW.KPHI.SV.W.0011.140510T1807Z-140510T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
207 PM EDT SAT MAY 10 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL MORRIS COUNTY IN NORTHERN NEW JERSEY...
  NORTHEASTERN SOMERSET COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 245 PM EDT

* AT 203 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR MARTINSVILLE...MOVING EAST
  AT 15 MPH. THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CHATHAM AROUND 235 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4073 7437 4068 7445 4066 7445 4067 7440
      4063 7441 4061 7443 4060 7445 4061 7465
      4071 7464 4075 7436
TIME...MOT...LOC 1807Z 268DEG 15KT 4065 7454

$$

FORECASTER: GORSE

1 follow-up statement

399 
WWUS51 KPHI 101820
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
220 PM EDT SAT MAY 10 2014

NJC027-035-101829-
/O.CAN.KPHI.SV.W.0011.000000T0000Z-140510T1845Z/
MORRIS NJ-SOMERSET NJ-
220 PM EDT SAT MAY 10 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SOMERSET AND
SOUTH CENTRAL MORRIS COUNTIES IS CANCELLED...

THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS WEAKENED 
AND IS MOVING OUT OF THE AREA...THEREFORE THE SEVERE THUNDERSTORM 
WARNING HAS BEEN CANCELLED. THERE WAS A STRONG DOWNBURST SIGNATURE 
EARLIER WITH THIS STORM ON RADAR.

LAT...LON 4073 7437 4068 7445 4066 7445 4067 7440
      4063 7441 4061 7443 4060 7445 4061 7465
      4071 7464 4075 7436
TIME...MOT...LOC 1819Z 268DEG 15KT 4065 7447

$$

FORECASTER: GORSE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 9:20 PM EDT	Dense Fog Advisory	PHI	Atlantic, Burlington, Cape May, Monmouth, Ocean	6 hr
May 10, 1:37 PM EDT	Special Weather Statement	PHI	Sussex	53 min
May 10, 2:35 PM EDT	Special Weather Statement	PHI	Middlesex	40 min
May 10, 3:14 PM EDT	Special Weather Statement	PHI	Burlington, Camden	61 min
May 10, 3:29 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	61 min
May 10, 4:05 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	55 min
May 10, 4:11 PM EDT	Special Weather Statement	PHI	Morris	34 min
May 10, 4:24 PM EDT	Special Weather Statement	PHI	Hunterdon	51 min
May 10, 4:43 PM EDT	Special Marine Warning	PHI		62 min
May 10, 4:45 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset	45 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; the sounding from the Mesonet's radiosonde archive.