Alert archive / New Jersey / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 130, NWS Philadelphia/Mount Holly

July 14, 2004Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 14, 2004, 4:19 PM EDT for Somerset County, New Jersey. It was in force for 56 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 14, 2004, 4:19 PM EDT (20:19 UTC)
Expired: Jul 14, 2004, 5:15 PM EDT
In force: 56 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

County Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 70 km from the middle of the area, began a volume at 20:22 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 14, 4:35 PM EDT	TSTM WND GST 59	3 E Millstone, NJ	SMALL HAIL WAS ALSO REPORTED.

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, 8.3 hours before the alert went out and 149 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: 4 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 445 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -32 m²/s²
0-3 km storm-relative helicity: 2 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.

000 
WUUS51 KPHI 142019
SVRPHI
NJC035-142115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
420 PM EDT WED JUL 14 2004

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 515 PM EDT

* AT 418 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
  SOUTHWEST OF SOMERVILLE...AND MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MILLSTONE BY 430 PM EDT...
  MANVILLE AND SOMERVILLE BY 435 PM EDT...
  BOUND BROOK AND SOMERSET BY 445 PM EDT...
  MIDDLESEX BY 450 PM EDT...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 4064 7451 4065 7441 4063 7441 4055 7454
      4050 7447 4045 7451 4042 7475 4042 7475
      4050 7480 4057 7471 4062 7471 4066 7455

$$

IOVINO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 2:22 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon	53 min
Jul 14, 3:20 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Somerset	55 min
Jul 14, 3:40 PM EDT	Flash Flood Warning	PHI	Hunterdon, Monmouth	77 days
Jul 14, 4:15 PM EDT	Severe Thunderstorm Warning	PHI	Salem	60 min
Jul 14, 5:04 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	56 min
Jul 14, 5:10 PM EDT	Tornado Warning	PHI	Cumberland, Salem	35 min
Jul 14, 5:17 PM EDT	Flash Flood Warning	PHI	Salem	3 hr
Jul 14, 5:41 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	64 min
Jul 14, 5:53 PM EDT	Severe Thunderstorm Warning	PHI	Mercer	52 min
Jul 14, 5:55 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cumberland	65 min
Jul 14, 7:07 PM EDT	Severe Thunderstorm Warning	PHI	Cape May	53 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2004 Every severe thunderstorm warning in 2004

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.