Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 123, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Oct 4, 2000, 6:40 PM EDT for Bucks County, Montgomery County, Pennsylvania. It was in force for 35 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
- Oct 4, 2000, 6:40 PM EDT (22:40 UTC)
- Expired
- Oct 4, 2000, 7:15 PM EDT
- In force
- 35 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Bucks County, PA, Montgomery County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 4, 6:45 PM EDT | Thunderstorm Wind 50 E | Countywide, PA | |
| Oct 4, 6:50 PM EDT | Thunderstorm Wind 57 E | Trumbauersville, 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.7 hours before the alert went out and 116 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1287 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 255 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KPHI 042241 SVRPHL PAC017-091-042315- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 640 PM EDT WED OCT 4 2000 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA. WESTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA. * UNTIL 715 PM EDT. * AT 632 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS MOVING INTO NORTHERN MONTGOMERY AND NORTHWEST BUCKS COUNTIES. THE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. HAIL UP TO ONE INCH IN DIAMETER AND WINDS GREATER THAN 55 MILES AN HOUR ARE EXPECTED FROM THIS STORM. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...SEEK SHELTER IMMEDIATELY! FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE TELEVISION OUTLET. $$ LAT...LON 4046 7546 4026 7568 4016 7505 4059 7530 RNS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 4, 5:42 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 33 min |
| Oct 4, 6:24 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 36 min |
| Oct 4, 6:34 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 41 min |
| Oct 4, 7:07 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 53 min |
| Oct 4, 7:19 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 56 min |
| Oct 4, 7:57 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 33 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2000Every severe thunderstorm warning in 2000
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.