Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 92, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 26, 1998, 11:58 AM EDT for Bucks County, Montgomery County, Pennsylvania. It was in force for 47 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 26, 1998, 11:58 AM EDT (15:58 UTC)
- Expired
- Jun 26, 1998, 12:45 PM EDT
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Bucks County, PA, Montgomery County, PA
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 4.0 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
- 507 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 1558 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 119 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPHL 261558 RRA SVRPHL PAC017-091-261645- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1158 AM EDT FRI JUN 26 1998 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN MONTGOMERY COUNTY IN PENNSYLVANIA NORTHERN BUCKS COUNTY IN PENNSYLVANIA * UNTIL 1245 PM EDT * AT 1156 AM EDT... A DEVELOPING SEVERE THUNDERSTORM WAS INDICATED NEAR EAST GREENVILLE... BY NATIONAL WEATHER SERVICE DOPPLER RADAR... MOVING SOUTHEAST 30 MPH. * THE SEVERE THUNDERSTORM IS EXPECTED TO BE NEAR... TELFORD AT NOON EDT PERKASIE AT NOON EDT SOUDERTON AT 1205 PM EDT SILVERDALE AT 1205 PM EDT DUBLIN AT 1210 PM EDT HATFIELD AT 1210 PM EDT LANSDALE AT 1210 PM EDT NEW BRITAIN AT 1215 PM EDT CHALFONT AT 1215 PM EDT 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. DO NOT DRIVE YOUR CAR WHERE WATER COVERS THE ROADWAY. THE WATER MAY BE DEEPER THAN YOU THINK. IF CAUGHT IN RISING FLOOD WATERS... ABANDON YOUR CAR QUICKLY AND MOVE TO HIGHER GROUND. FOR THE LA*TEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TELEVISION STATIONS...OR YOUR CABLE TELEVISION OUTLET. TFG
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 12:12 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 33 min |
| Jun 26, 12:32 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 63 min |
| Jun 26, 1:36 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 64 min |
| Jun 26, 2:05 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 65 min |
| Jun 26, 2:30 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 65 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.