Alert archive / New Jersey / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 74, NWS Philadelphia/Mount Holly

July 22, 2003Middlesex County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 22, 2003, 2:10 PM EDT for Middlesex County, New Jersey. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 22, 2003, 2:10 PM EDT (18:10 UTC)
Expired
Jul 22, 2003, 3:00 PM EDT
In force
50 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Middlesex County, NJ

The radar

The Philadelphia radar (KDIX), 55 km from the middle of the area, began a volume at 18:10 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 22, 1:45 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 6.2 hours before the alert went out and 139 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2003-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1497 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2003-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1497 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
526 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
159 m²/s²
0-3 km storm-relative helicity
152 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.3

Open this sounding in Storm Lab

The text

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

961 
WUUS51 KPHI 221810
SVRPHI
NJC023-221900-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
210 PM EDT TUE JUL 22 2003

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 300 PM EDT.

* AT 208 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM...OVER SOUTH PLAINFIELD...MOVING EAST AT 
  30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  COLONIA...PERTH AMBOY AT 215 PM.
  CARTERET AT 220 PM.

DAMAGING WINDS IN EXCESS OF 55 MPH ARE EXPECTED FROM THIS STORM. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED.

THIS STORM IS CAPABLE OF PRODUCING HEAVY RAINFALL...WHICH MAY FLOOD
LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS
AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM.

$$

LAT...LON 4063 7452 4045 7445 4059 7367 4083 7376

IOVINO

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 8:07 PM EDTSevere Thunderstorm WarningPHIMorris83 min
Jul 21, 8:36 PM EDTSevere Thunderstorm WarningPHIHunterdon84 min
Jul 21, 9:01 PM EDTSevere Thunderstorm WarningPHISomerset89 min
Jul 22, 2:22 PM EDTSevere Thunderstorm WarningPHIAtlantic, Camden38 min
Jul 22, 3:35 PM EDTSevere Thunderstorm WarningPHIHunterdon40 min
Jul 22, 3:48 PM EDTSevere Thunderstorm WarningPHISomerset42 min
Jul 22, 4:17 PM EDTSevere Thunderstorm WarningPHIMiddlesex43 min
Jul 22, 4:45 PM EDTFlash Flood WarningPHIMiddlesex105 min
Jul 22, 5:22 PM EDTSpecial Marine WarningPHI83 min
Jul 22, 5:49 PM EDTSevere Thunderstorm WarningPHICumberland41 min
Jul 22, 5:56 PM EDTSevere Thunderstorm WarningPHICape May49 min
Jul 22, 6:00 PM EDTSpecial Marine WarningPHI60 min
Jul 22, 6:22 PM EDTSevere Thunderstorm WarningPHIAtlantic38 min
Jul 22, 6:43 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden47 min
Jul 22, 6:59 PM EDTSevere Thunderstorm WarningPHIOcean61 min
Jul 22, 7:29 PM EDTSevere Thunderstorm WarningPHIMonmouth76 min
Jul 22, 7:40 PM EDTSpecial Marine WarningPHI80 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2003Every severe thunderstorm warning in 2003

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; radar from the NEXRAD Level II archive.