Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 112, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 8, 1996, 6:16 PM EDT for Bucks County, Delaware County, Philadelphia County, Pennsylvania. It was in force for 44 min. 2 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
- Sep 8, 1996, 6:16 PM EDT (22:16 UTC)
- Expired
- Sep 8, 1996, 7:00 PM EDT
- In force
- 44 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Bucks County, PA, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 70 km from the middle of the area, began a volume at 22:16 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 |
|---|---|---|---|
| Sep 8, 6:30 PM EDT | Thunderstorm Wind | Northeast, PA | |
| Sep 8, 6:30 PM EDT | Thunderstorm Wind | Bristol, PA |
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 12:00Z, 10.3 hours before the alert went out and 217 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
- 153 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 566 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPHL 082217 SVRPHL PAC017-045-101-082300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ 616 PM EDT SUN SEP 8 1996 THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN PENNSYLVANIA ...SOUTHERN BUCKS COUNTY...DELAWARE COUNTY ...PHILADELPHIA COUNTY AT 615 PM...NATIONAL WEATHER SERVICE RADAR SHOWED SEVERE THUNDERSTORMS MOVING ACROSS DELAWARE...PHILADELPHIA AND SOUTHERN BUCKS COUNTIES. THESE THUNDERSTORMS WERE MOVING EAST AT 20 MPH. THIS IS A DANGEROUS STORM. PREPARE FOR STRONG DAMAGING WINDS... LARGE HAIL...HEAVY RAINS AND 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. HEAVY RAINS WITH THIS THUNDERSTORM MAY CAUSE FLOODING OF SMALL STREAMS AND UNDERPASSES VERY QUICKLY. DO NOT DRIVE YOUR CAR INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER MAY BE DEEPER THAN YOU THINK. IF CAUGHT IN RISING WATERS...ABANDON YOUR CAR QUICKLY. MOVE TO HIGHER GROUND.
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 6:23 PM EDT | Flash Flood Warning | PHI | Bucks, Philadelphia | 2 hr |
| Sep 8, 6:29 PM EDT | Flash Flood Warning | PHI | Montgomery | 2 hr |
Nearby
Severe 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.