Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 14, NWS Philadelphia/Mount Holly

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

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 10, 2014, 4:45 PM EDT for Hunterdon County, Morris County, Somerset County, New Jersey. It was in force for 45 min. 2 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: May 10, 2014, 4:45 PM EDT (20:45 UTC)
Expired: May 10, 2014, 5:30 PM EDT
In force: 45 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ

What was reported inside it

Time	Report	Where	Remark
May 10, 4:50 PM EDT	TSTM WND DMG	Clinton, NJ	SOME TREES DOWN.
May 10, 4:50 PM EDT	TSTM WND DMG	High Bridge, NJ	SOME TREES DOWN.

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, 8.8 hours before the alert went out and 141 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.

904 
WUUS51 KPHI 102045
SVRPHI
NJC019-027-035-102130-
/O.NEW.KPHI.SV.W.0014.140510T2045Z-140510T2130Z/

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

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 530 PM EDT

* AT 442 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR BLOOMSBURY...MOVING EAST AT
  40 MPH. THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM PRODUCED WIND GUSTS UP TO 54 MPH EARLIER IN  
  THE SOUTH ALLENTOWN PENNSYLVANIA AREA.

* LOCATIONS IMPACTED INCLUDE...
  CLINTON...
  LEBANON...
  PEAPACK AND GLADSTONE...
  BASKING RIDGE...
  MILLINGTON...
  MADISON...
  FLORHAM PARK...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS SEVERE THUNDERSTORM...WHICH
COULD FLOOD LOW LYING AREAS QUICKLY AND COVER ROADS WITH WATER. DO
NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4082 7433 4079 7436 4073 7437 4068 7445
      4066 7445 4067 7440 4066 7440 4062 7442
      4060 7445 4054 7505 4068 7507 4069 7502
      4085 7432
TIME...MOT...LOC 2044Z 249DEG 35KT 4062 7498

$$

FORECASTER: GORSE

2 follow-up statements

239 
WWUS51 KPHI 102102
SVSPHI

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

NJC019-027-035-102130-
/O.CON.KPHI.SV.W.0014.000000T0000Z-140510T2130Z/
HUNTERDON NJ-MORRIS NJ-SOMERSET NJ-
502 PM EDT SAT MAY 10 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR NORTHERN SOMERSET...SOUTHERN MORRIS AND NORTHEASTERN HUNTERDON
COUNTIES...

AT 500 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS TO
60 MPH. THIS STORM WAS LOCATED NEAR WHITE HOUSE STATION...OR 9 MILES 
NORTHWEST OF SOMERVILLE...MOVING EAST AT 50 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
FAR HILLS AND BERNARDSVILLE AROUND 510 PM EDT...
BASKING RIDGE AND MILLINGTON AROUND 515 PM EDT...
MADISON AND WATCHUNG AROUND 520 PM EDT...
CHATHAM AND FLORHAM PARK AROUND 525 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE FOR DAMAGING WINDS. 
PEOPLE OUTSIDE SHOULD MOVE INDOORS...AWAY FROM WINDOWS.

&&

LAT...LON 4056 7484 4073 7483 4085 7432 4082 7433
      4079 7436 4073 7437 4068 7445 4066 7445
      4067 7440 4066 7440 4062 7442 4060 7445
TIME...MOT...LOC 2101Z 255DEG 44KT 4066 7473

$$

FORECASTER: GORSE

056 
WWUS51 KPHI 102121
SVSPHI

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

NJC019-027-035-102131-
/O.EXP.KPHI.SV.W.0014.000000T0000Z-140510T2130Z/
HUNTERDON NJ-MORRIS NJ-SOMERSET NJ-
521 PM EDT SAT MAY 10 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN SOMERSET...SOUTHERN
MORRIS AND NORTHEASTERN HUNTERDON COUNTIES WILL EXPIRE AT 530 PM
EDT...

THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE AS THE 
STORM IS WEAKENING AND MOVING OUT OF THE AREA.

LAT...LON 4056 7484 4073 7483 4085 7432 4082 7433
      4079 7436 4073 7437 4068 7445 4066 7445
      4067 7440 4066 7440 4062 7442 4060 7445
TIME...MOT...LOC 2121Z 255DEG 44KT 4072 7442

$$

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, 2:07 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Somerset	38 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

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.