Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1988
Severe Thunderstorm Warning 16, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 1, 1988, 5:01 PM EDT for Chester County, Pennsylvania. It was in force for 59 min. 1 report 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
- Jun 1, 1988, 5:01 PM EDT (21:01 UTC)
- Expired
- Jun 1, 1988, 6:00 PM EDT
- In force
- 59 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
County Chester County, PA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 1, 5:18 PM EDT | Thunderstorm Wind 0 | Chester, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Atlantic City In, NJ (KACY), launched 12:00Z, 9.0 hours before the alert went out and 122 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
- 1839 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KPHL 012101 RRA
SVRPHL
PAC029-012200-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA PA
501 PM EDT WED JUN 1 1988
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 600 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHEAST PENNSYLVANIA
...CHESTER
AT 455 PM A SEVERE THUNDERSTORM WAS INDICATED ON RADAR IN NORTHWEST
CHESTER COUNTY. THIS STORM WAS MOVING TO THE SOUTHEAST AT 35 MILES
AN HOUR. THIS STORM HAS HAD A HISTORY OF DAMAGE MOVING THROUGH
THE READING AREA.
THIS IS A DANGEROUS STORM. IF YOU ARE IN THE WARNED AREA...BE
PREPARED FOR STRONG DAMAGING WINDS...LARGE HAmIL...VERY HEAVY RAIN
AND DANGEROUS LIGHTNING. SHOULD THE STORM APPROACH YOU...SEEK
IMMEDIATE SHELTER. MOBILE HOMES ARE MOST VULNERABLE TO HIGH WINDS
AND SHOULD BE AVOIDED.
HASKOWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 1, 4:00 PM EDT, 1 hour 1 minute before
SPECIAL WEATHER STATEMENT FOR SOUTHEASTERN PA AND SOUTHERN NJ NATIONAL WEATHER SERVICE PHILADELPHIA PA 400 PM EDT WED JUN 01 1988 ...SEVERE THUNDERSTORM WATCH UNTIL 9 PM.. A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM FOR SOUTHEASTERN PENNSYLVANIA AND ALL OF NEW JERSEY. WEATHER SERVICE RADAR AT 400 PM INDICATED A LINE OF VERY STRONG THUNDERSTORMS EXTENDING FROM NEAR ALLENTOWN SOUTHWEST TO HARRISBURG. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 40 MILES AN HOUR AND SHOULD MOVE INTO SOUTHEASTERN PENNSYLVANIA AROUND 5 PM...AND MOVE INTO SOUTHERN NEW JERSEY AROUND 6 PM. THESE THUNDERSTORMS MAY BE ACCOMPANIED BY STRONG DAMAGING WINDS...HEAVY RAINFALL...DANGEROUS LIGHTNING...AND LARGE 5HAIL. IF YOU SEE THREATENING WEATHER APPROACHING...PLEASE SEEK SHELTER INDOORS IMMEDIATELY. WERT
Special weather statement, Jun 1, 4:01 PM EDT, 1 hour before
SPECIAL WEATHER STATEMENT FOR SOUTHEASTERN PA AND SOUTHERN NJ NATIONAL WEATHER SERVICE PHILADELPHIA PA 400 PM EDT WED JUN 01 1988 ...SEVERE THUNDERSTORM WATCH UNTIL 9 PM.. A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM FOR SOUTHEASTERN PENNSYLVANIA AND ALL OF NEW JERSEY. WEATHER SERVICE RADAR AT 400 PM INDICATED A LINE OF VERY STRONG THUNDERSTORMS EXTENDING FROM NEAR ALLENTOWN SOUTHWEST TO HARRISBURG. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 40 MILES AN HOUR AND SHOULD MOVE INTO SOUTHEASTERN PENNSYLVANIA AROUND 5 PM...AND MOVE INTO SOUTHERN NEW JERSEY AROUND 6 PM. THESE THUNDERSTORMMS MAY BE ACCOMPANIED BY STRONG DAMAGING WINDS... HEAVY RAINFALL...DANGEROUS LIGHTNING...AND LARG*E HAIL. IF YOU SEE THREATENING WEATHER APPROACHING...PLEASE SEEK SHELTER INDOORS IMMEDIATELY. WERT
Special weather statement, Jun 1, 4:33 PM EDT, 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON DE 433 PM EDT WED JUN 1 1988 ...SEVERE THUNDERSTORM WATCH FOR DELAWARE UNTIL 9PM TONIGHT... AT 415 PM WEARHER RADAR SHOWED A LINE OF SCATTERED THUNDERSTORMS OVER PENNSYLVANIA BETWEEN ALLENTOWN AND HARRISBURG. THESE ARE MOVING TOWARD THE SOUTHEAST AT 35 MPH AND COULD MOVE INTO PORTIONS OF NORTHERN DELAWARE NEAR 6PM THIS EVENING AND SPREAD SOUTHWARD ACROSS THE STATE. AS YET NO SEVERE WEATHER HAS BEEN REPORTED...BUT A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR STRONG DAMAGING WINDS AND LARGE HAIL. PERSONS IN THE WATCH AREA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND BE PREPARED TO TAKE PROTECTIVE MEASURES IF HAZARDOUS WEATHER APPROACHES. CS
Special weather statement, Jun 1, 4:44 PM EDT, 17 minutes before
SPECIAL WEATHER STATEMENT FOR EASTERN PENNSYLVANIA NATIONAL WEATHER SERVICE PHILADELPHIA PA 443 PM EDT WED JUN 01 1988 ...SEVERE THUNDERSTORM WATCH UNTIL 9 PM FOR PORTIONS OF CENTRAL AND EASTERN PENNSYLVANIA AND MUCH OF NEW JERSEY... AT 435 PM WEATHER SERVICE RADAR SHOWED A STRONG THUNDERSTORM JUST WEST OF READING...MOVING TO THE SOUTHEAST AT 35 MPH. PERSONS IN WESTERN CHESTER COUNTY...ESPECIALLY WEST OF A ELVERSON TO COATESVILLE TO WEST GROVE LINE SHOULD PREPARE FOR THIS THUNDERSTORM. THESE THUNDERSTORMS MAY BE ACCOMPANIED BY STRONG DAMAGING WINDS... HEAVY RAINS...DANGEROUS LIGHTNING...AND LARGE HAIL. IF YOU SEE THREATENING WEATHER APPROACHING...PLEASE MOVE INDOORS IMMEDIATELY. HASVKO
Special weather statement, Jun 1, 4:45 PM EDT, 16 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ATLANTIC CITY NJ 435 PM EDT WED JUN 1 1988 ...DO NOT USE AFTER 6 PM... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM EDT FOR MOST OF NEW JERSEY... RADAR AT 430 PM SHOWED SCATTERED SHOWERS AND THUNDERSTORMS OVER LONG ISLAND NEW YORK...NORTHERN NEW JERSEY...NORTHEAST AND EAST CENTRAL PENNSLYVANIA. THUNDERSTORMS WITH VERY HEAVY SHOWERS WERE LOCATED OVER NASSAU COUNTY WLONG ISLAND...ONE 10 MILES EAST OF ALLENTOWN PENNSLYVANIA AND THE HAEVIEST WAS NEAR READING PENNSLYVANIA. THE STORMS AND SHOWERS WERE MOVING EAST SOUTHEAST AT 40 MILES AN HOUR. VAM
Special weather statement, Jun 1, 4:49 PM EDT, 12 minutes before
SPECIAL WEATHER STATEMENT FOR EASTERN PENNSYLVANIA CORRECTED NATIONAL WEATHER SERVICE PHILADELPHIA, PA 448 PM EDT WED JUN 1 1988 ...SEVERE THUNDERSTORM WATCH UNTIL 9 PM FOR PORTIONS OF CENTRAL AND EASTERN PENNSYLVANIA AND MUCH OF NEW JERSEY... AT 435 PM WEATHER SERVICE RADAR SHOWED A STRONG THUNDERSTORM JUST WEST OF READING...MOVING TO THE SOUTHEAST AT 35 MPH. PERSONS IN WESTERN CHESTER COUNTY...ESPECIALLY WEST OF AN ELVERSON TO COATESVILLE TO WEST GROVE LINE SHOULD PREPARE FOR THIS THUNDERSTORM UNTIL 6 PM. THESE THUNDERSTORMS MAY BE ACCOMPANIED BY STRONG DAMAGING WINDS... HEAVY RAINS...DANGEROUS LIGHTNING...AND LARGE HAIL. IF YOU SEE THREATENING WEATHER APPROACHING...PLEASE MOVE I_NDOORS IMMEDIATELY. HASKO
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1988Every severe thunderstorm warning in 1988
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.