Alert archive / New Jersey / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 77, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 4, 1996, 12:51 AM EDT for Burlington County, New Jersey; Philadelphia County, Pennsylvania. It was in force for 54 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 4, 1996, 12:51 AM EDT (04:51 UTC)
- Expired
- Jul 4, 1996, 1:45 AM EDT
- In force
- 54 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Burlington County, NJ, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 42 km from the middle of the area, began a volume at 04:54 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 4, 1:12 AM EDT | Thunderstorm Wind | Philadelphia, PA | |
| Jul 4, 1:20 AM EDT | Hail 0.75 | Lumberton, NJ | |
| Jul 4, 1:30 AM EDT | Thunderstorm Wind | Vincentown, NJ |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 4.9 hours before the alert went out and 201 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.
- Mixed-layer CAPE
- 298 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 769 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPHL 040452 SVRPHL NJC005-PAC101-040545- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ 1251 AM EDT THU JUL 4 1996 THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 145 AM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NEW JERSEY ...BURLINGTON COUNTY IN PENNSYLVANIA ...PHILADELPHIA COUNTY RADAR INDICATED A SEVERE THUNDERSTORM OVER NORTHEAST PHILADELPHIA AT 1248 AM. THE THUNDERSTORM WAS MOVING EAST AROUND 20 MPH AND WILL MOVE INTO BURLINGTON COUNTY. THIS IS A DANGEROUS STORM. PREPARE FOR STRONG DAMAGING WINDS... LARGE HAIL...HEAVY RAINS AN,D DEADLY LIGHTNING. SHOULD THE STORM APPROACH MOVE INSIDE QUICKLY. DO NOT STAND NEAR WINDOWS. MOBILE HOMES ARE MOST VULNERABLE TO HIGH WINDS AND SHOULD BE AVOIDED.
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 1:40 AM EDT | Severe Thunderstorm Warning | PHI | Burlington | 50 min |
| Jul 4, 1:50 AM EDT | Severe Thunderstorm Warning | PHI | Ocean | 55 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 1996Severe Thunderstorm Warnings in Pennsylvania, 1996Every severe thunderstorm warning in 1996
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.