Alert archive / New Jersey / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 36, NWS Philadelphia/Mount Holly

July 5, 2003Burlington County, Camden County, New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 5, 2003, 4:54 PM EDT for Burlington County, Camden County, New Jersey; Bucks County, Pennsylvania. It was in force for 66 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
Jul 5, 2003, 4:54 PM EDT (20:54 UTC)
Expired
Jul 5, 2003, 6:00 PM EDT
In force
66 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

Counties Burlington County, NJ, Camden County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 42 km from the middle of the area, began a volume at 20:55 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 nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.9 hours before the alert went out and 199 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 2003-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 23 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2003-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 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
23 J/kg
Mixed-layer CIN
-155 J/kg
Mixed-layer LCL
1502 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
78 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.

950 
WUUS51 KPHI 052054
SVRPHI
NJC005-007-PAC017-052200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
449 PM EDT SAT JUL 5 2003

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA.
  CAMDEN COUNTY IN SOUTHERN NEW JERSEY. 
  BURLINGTON COUNTY IN SOUTHERN NEW JERSEY.

* UNTIL 600 PM EDT.

* AT 450 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A LEADING EDGE OF STRONG WINDS IN MONTGOMERY COUNTY
  MOVING EAST AT 40 MPH.

* DAMAGING WINDS IN EXCESS OF 55 MPH CAN BE EXPECTED IN BUCKS 
  COUNTY...CAMDEN COUNTY...AND BURLINGTON COUNTIES AS THIS LINE
  OF STRONG WINDS MOVES THROUGH THE REGION.

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

FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE
TELEVISION OUTLET.

LAT...LON 3974 7472 3994 7520 4004 7499 4017 7505
          4021 7472
$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 5:18 PM EDTSevere Thunderstorm WarningPHIMercer42 min
Jul 5, 6:03 PM EDTSpecial Marine WarningPHI117 min
Jul 5, 6:03 PM EDTSpecial Marine WarningPHI117 min
Jul 5, 4:05 PM EDTSevere Thunderstorm WarningPHIChester55 min
Jul 5, 4:27 PM EDTSevere Thunderstorm WarningPHIMontgomery33 min
Jul 5, 4:37 PM EDTSevere Thunderstorm WarningPHIDelaware, Montgomery, Philadelphia38 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2003Severe Thunderstorm Warnings in Pennsylvania, 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.