Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 33, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 13, 2000, 8:19 PM EDT for Bucks County, Montgomery County, Philadelphia County, Pennsylvania. It was in force for 41 min. 4 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
- May 13, 2000, 8:19 PM EDT (00:19 UTC)
- Expired
- May 13, 2000, 9:00 PM EDT
- In force
- 41 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Bucks County, PA, Montgomery County, PA, Philadelphia County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 13, 8:20 PM EDT | Hail 0.88 | Chalfont, PA | |
| May 13, 8:25 PM EDT | Thunderstorm Wind 50 E | Bridgeport, PA | |
| May 13, 8:40 PM EDT | Thunderstorm Wind 52 E | Countywide, PA | |
| May 13, 8:58 PM EDT | Hail 0.75 | Levittown, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 13, 6:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 13, 8:00 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.3 hours before the alert went out and 212 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
- 798 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 183 m²/s²
- 0-3 km storm-relative helicity
- 248 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
189 WUUS51 KPHI 140022 SVRPHL NJC021-027-035-PAC017-091-101-140100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 819 PM EDT SAT MAY 13 2000 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MERCER COUNTY IN CENTRAL NEW JERSEY. MORRIS COUNTY IN NORTHERN NEW JERSEY. SOMERSET COUNTY IN NORTHERN NEW JERSEY. SOUTHEASTERN MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA. SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA. PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA. * UNTIL 900 PM EDT. * AT 813 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMSFROM THE SOUTHERN POCONOS SOUTH TO CHESTER COUNTY...MOVING EAST AT 40 TO 50 MPH. FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE TELEVISION OUTLET. NNNN
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 8:14 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 36 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.