Alert archive / New Jersey / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 150, NWS Philadelphia/Mount Holly

July 23, 2008Middlesex County, Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 23, 2008, 4:03 PM EDT for Middlesex County, Morris County, Somerset County, New Jersey. It was in force for 57 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 23, 2008, 4:03 PM EDT (20:03 UTC)
Expired: Jul 23, 2008, 5:00 PM EDT
In force: 57 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Middlesex County, NJ, Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 71 km from the middle of the area, began a volume at 20:04 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 23, 4:23 PM EDT	HAIL 0.5	Somerset, NJ

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 23, 2:34 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.1 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: 302 J/kg
Mixed-layer CIN: -142 J/kg
Mixed-layer LCL: 822 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -55 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 232003
SVRPHI
NJC023-027-035-232100-
/O.NEW.KPHI.SV.W.0150.080723T2003Z-080723T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
403 PM EDT WED JUL 23 2008

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  EXTREME SOUTH CENTRAL MORRIS COUNTY IN NORTHERN NEW JERSEY...
  EASTERN SOMERSET COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 500 PM EDT

* AT 402 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 NEAR
  KENDALL PARK...AND MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NORTH BRUNSWICK BY 420 PM...
  SOMERSET BY 425 PM...
  NEW BRUNSWICK BY 430 PM...
  SOCIETY HILL BY 435 PM...
  NORTHWEST OF EDISON BY 440 PM...
  COLONIA BY 455 PM...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
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 WEDNESDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.

LAT...LON 4058 7420 4035 7458 4039 7464 4052 7451
      4055 7453 4059 7447 4065 7462 4074 7454
      4069 7443 4067 7446 4065 7445 4066 7440
      4059 7444 4060 7430 4059 7428 4060 7423
TIME...MOT...LOC 2003Z 218DEG 18KT 4043 7462

$$

IOVINO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 3:02 AM EDT	Special Marine Warning	PHI		58 min
Jul 23, 3:51 AM EDT	Flash Flood Watch	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more	25 hr
Jul 23, 2:44 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	46 min
Jul 23, 2:55 PM EDT	Severe Thunderstorm Warning	PHI	Mercer	35 min
Jul 23, 2:58 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon	47 min
Jul 23, 3:26 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Somerset	64 min
Jul 23, 3:30 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	60 min
Jul 23, 4:09 PM EDT	Tornado Warning	PHI	Middlesex, Somerset	36 min
Jul 23, 4:51 PM EDT	Areal Flood Warning	PHI	Middlesex, Somerset	105 min
Jul 23, 5:03 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Somerset	57 min
Jul 23, 5:13 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Somerset	62 min
Jul 23, 7:00 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	60 min
Jul 23, 7:10 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Morris, Somerset	35 min
Jul 23, 7:48 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	57 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2008 Every severe thunderstorm warning in 2008

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.