Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 40, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 31, 1998, 8:11 PM EDT for Berks County, Pennsylvania. It was in force for 64 min. 5 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 31, 1998, 8:11 PM EDT (00:11 UTC)
- Expired
- May 31, 1998, 9:15 PM EDT
- In force
- 64 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
County Berks County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 31, 8:40 PM EDT | Hail 0.75 | Centerport, PA | |
| May 31, 8:55 PM EDT | Thunderstorm Wind | Leesport, PA | |
| May 31, 9:00 PM EDT | Tornado F3 | Evansville, PA | |
| May 31, 9:10 PM EDT | Hail 1.75 | Moselem Spgs, PA | |
| May 31, 9:20 PM EDT | Thunderstorm Wind 50 | Kutztown, 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 31, 5:00 PM EDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.2 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.
629 WUUS1 KPHL 010012 RRA SVRPHL PAC011-010115- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 811 PM EDT SUN MAY 31 1998 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN BERKS COUNTY IN PENNSYLVANIA * UNTIL 915 PM EDT * AT 809 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES WEST NORTHWEST OF FRYSTOWN MOVING EAST NORTHEAST AT 35 MPH. * THE SEVERE THUNDERSTORM IS EXPECTED TO BE NEAR... STRAUSSTOWN AT 817 PM EDT BERNVILLE AT 820 PM EDT CENTERPORT AT 831 PM 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/DELISI
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 12:17 AM EDT | Severe Thunderstorm Warning | PHI | Berks | 48 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.