Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 46, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 1, 1998, 12:17 AM EDT for Berks County, Pennsylvania. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 1, 1998, 12:17 AM EDT (04:17 UTC)
- Expired
- Jun 1, 1998, 1:05 AM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
County Berks County, PA
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 31, 10:00 PM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 4.3 hours before the alert went out and 206 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
- 3110 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1063 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 203 m²/s²
- 0-3 km storm-relative helicity
- 277 m²/s²
- Significant tornado parameter
- 3.0
- Supercell composite
- 18.2
The text
As transmitted, in the capitals the NWS used until 2016.
071 WUUS1 KPHL 010425 SVRPHL PAC011-010505- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTED NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1217 AM EDT MON JUN 1 1998 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... BERKS COUNTY IN PENNSYLVANIA * UNTIL 105 AM EDT * AT 1215 AM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES SOUTH SOUTHWEST OF OLEY MOVING EAST AT 40 MPH. * THE SEVERE THUNDERSTORM IS EXPECTED TO BE NEAR... HEREFORD AT 1220 AM EDT BECHTELSVILLE AT 1240 AM EDT A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. THIS IS A DANGEROUS STORM. MOVE INSIDE A STRONG BUILDING AND DO NOT STAND NEAR WINDOWS. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TELEVISION STATIONS...OR YOUR CABLE TELEVISION OUTLET. KRAUS/WANTON CORRECTED TIME AT BECHTELSVILLE
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 8:11 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 64 min |
| May 31, 8:37 PM EDT | Tornado Warning | PHI | Berks | 33 min |
| May 31, 9:07 PM EDT | Tornado Warning | PHI | Berks, Lehigh | 48 min |
| May 31, 9:14 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 46 min |
| May 31, 9:39 PM EDT | Tornado Warning | PHI | Berks, Chester | 36 min |
| May 31, 9:43 PM EDT | Tornado Warning | PHI | Bucks | 32 min |
| May 31, 10:01 PM EDT | Tornado Warning | PHI | Monroe | 34 min |
| May 31, 10:21 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 49 min |
| May 31, 11:01 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 34 min |
| Jun 1, 12:40 AM EDT | Severe Thunderstorm Warning | PHI | Chester | 50 min |
| Jun 1, 12:54 AM EDT | Severe Thunderstorm Warning | PHI | Bucks | 31 min |
| Jun 1, 1:00 AM EDT | Severe Thunderstorm Warning | PHI | Delaware | 50 min |
| Jun 1, 1:15 AM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 35 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1998Every severe thunderstorm warning in 1998
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.