Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 121, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Nov 8, 1996, 4:01 PM EST for Berks County, Chester County, Pennsylvania. It was in force for 64 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
- Nov 8, 1996, 4:01 PM EST (21:01 UTC)
- Expired
- Nov 8, 1996, 5:05 PM EST
- In force
- 64 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Berks County, PA, Chester County, PA
The radar
The Philadelphia radar (KDIX), 124 km from the middle of the area, began a volume at 21:03 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 |
|---|---|---|---|
| Nov 8, 4:25 PM EST | Thunderstorm Wind | Downingtown, PA | |
| Nov 8, 4:30 PM EST | Thunderstorm Wind | Northeast, 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 9.0 hours before the alert went out and 193 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
- 563 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 540 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 252 m²/s²
- 0-3 km storm-relative helicity
- 289 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPHL 082102 RRA SVRPHL PAC011-029-082205- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ 401 PM EST FRI NOV 8 1996 THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY NJ HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 505 PM EST FOR PEOPLE IN THE FOLLOWING LOCATION... IN PENNSYLVANIA ...BERKS COUNTY ...WESTERN CHESTER COUNTY AT 359 PM EST...A SEVERE THUNDERSTORM WAS INDICATED BY NWS DOPPLER RADAR 5 MILES NORTHWEST OF ATGLEN MOVING NORTH NORTHEAST AT 45 MPH. WIND DAMAGE WAS REPORTED IN NOTTINGHAM IN CHESTER COUNTY. THIS STORM MAY AFFECT THE FOLLOWING NEARBY AREAS... HONEY BROOK... MORGANTOWN... ELVERSON... WARWICK... MOHNTON... SHILLINGTON... KENHORST... BIRDSBORO... WYOMISSING... WYOMISSING HILLS AND WEST READING. A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA. REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCED WARNING. IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW. AFTER THE STORM HAS PASSED...REPORT ANY SEVERE WEATHER OR FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY AND HAVE THEM RELAY YOUR SEVERE WEATHER REPORT ON TO THE NATIONAL WEATHER SERVICE. SEVERE THUNDERSTORMS CONTAIN WINDS GREATER THAN 58 MILES AN HOUR... DIME SIZE HAIL OR LARGER...VERY HEAVY RAINS AND DEADLY LIGHTNING. STAY TUNED TO NOAA WEATHER RADIO...THE VOICE OF THE NATIONAL WEATHER SERVICE...OR TO CO^MMERCIAL RADIO OR TELEVISION STATIONS FOR THE LATEST STORM INFORMATION. TFG/AMC &
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 8, 3:03 PM EST | Severe Thunderstorm Warning | PHI | Berks | 62 min |
| Nov 8, 3:24 PM EST | Severe Thunderstorm Warning | PHI | Lehigh | 36 min |
| Nov 8, 3:49 PM EST | Tornado Warning | PHI | Monroe | 46 min |
| Nov 8, 4:37 PM EST | Severe Thunderstorm Warning | PHI | Lehigh, Montgomery | 38 min |
| Nov 8, 4:40 PM EST | Severe Thunderstorm Warning | PHI | Lehigh | 35 min |
| Nov 8, 4:47 PM EST | Flash Flood Warning | PHI | Carbon | 4 hr |
| Nov 8, 5:10 PM EST | Severe Thunderstorm Warning | PHI | Northampton | 50 min |
| Nov 8, 6:10 PM EST | Flash Flood Warning | PHI | Monroe | 5 hr |
| Nov 8, 6:10 PM EST | Flash Flood Warning | PHI | Berks | 5 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.