Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 9, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at May 28, 1987, 3:31 PM EDT for Lawrence County, Pennsylvania. It was in force for 59 min.
The area
The counties it named.
The facts
- Issued
- May 28, 1987, 3:31 PM EDT (19:31 UTC)
- Expired
- May 28, 1987, 4:30 PM EDT
- In force
- 59 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
County Lawrence County, PA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 7.5 hours before the alert went out and 68 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
- 252 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 813 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 60 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 KYNG 281936 RRA SVRYNG PAC073-282030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE YOUNGSTOWN OH 331 PM EDT THU MAY 28 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 430 PM EDT FOR THE FOLLOWING COUNTY OF NORTHWEST PENNSYLVANIA... LAWRENCE AT 330 PM REPORTS OF POSSIBLE SEVERE THUNDERSTORMS WITH LARGE HAIL WERE RECEIVED FROM NORTHWEST LAWRENCE COUNTY PENNSYLVANIA. RADAR INDICATED POSSIBLE SEVERE THUNDERSTORMS OVER NORTHWEST LAWRENCE COUNTY MOVING SOUTHEAST AT 15 MPH. THIS THUNDERSTORM MAY PRODUCE LARGE HAIL...HEAVY RAIN...DAMAGING WINDS AND DANGEROUS LIGHTNING. SEEK SHELTER FROM THIS STORM. TRP }
What 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, May 28, 12:50 PM EDT, 2 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE YOUNGSTOWN OH 1250 PM EDT THU MAY 28 1987 AT 1245 PM RADAR INDICATED THAT A SMALL AREA OF STRONG THUNDERSTORMS HAD DEVELOPED OVER EXTREME NORTHERN TRUMBULL COUNTY NEAR MESAPOTAMIA OHIO. THESE THUNDERSTORMS DEVELOPED RAPIDLY AND LIKELY CONTAIN VERY HEAVY RAIN THAT WILL TEMPORARILY REDUCE VISIBILITIES TO NEAR ZERO AND CAUSE TEMPORARY STREET FLOODING. IN ADDITION..THESE STORMS WILL PRODUCE GUSTY WINDS AND DANGEROUS LIGHTNING. THE STORMS WERE MOVING SLOWLY EAST AND WILL MOVE INTO NORTHERN MERCER COUNTY NORTH OF GREENVILLE PENNSYLVANIA BY 115 PM. TRP
Special weather statement, May 28, 1:24 PM EDT, 2 hours 7 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ERIE, PA 119 PM EDT THU MAY 28 1987 ...STRONG THUNDERSTORM MOVING INTO NORTHWEST PENNSYLVANIA... AT 115 PM EDT RADAR SHOWED A STRONG THUNDERSTORM JUST TO THE WEST OF THE LAKE PYMATUNING RESERVOIR MOVING TOWARDS THE EAST AT 15 MILES AN HOUR. THIS STROM WILL AFFECT SOUTHERN CRAWFORD COUNTY IN NORTHWEST PENNSYLVANIA UNTIL 300 PM THIS AFTERNOON. THIS STORM WILL CAUSE HEAVY DOWNPOURS WITH SOME FLOODING OF LOW LYING AREAS ALONG WITH GUSTY WINDS AND DANGEROUS LIGHTNING. PARRISH
Special weather statement, May 28, 1:37 PM EDT, 1 hour 54 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE YOUNGSTOWN OH 136 PM EDT THU MAY 28 1987 AT 135 PM STRONG THUNDERSTORMS CONTINUED TO DRIFT SLOWLY EAST ACROSS THE MECCA..JOHNSTON..AND KINSMAN OHIO AREAS OF NORTHERN TRUMBULL COUNTY. OHIO STATE PATROL REPORTS THAT THESE STORMS HAVE PRODUCED EXTREMELY HEAVY RAIN AND SMALL HAIL AS THEY MOVED OVER THE MECCA OHIO AREA. FREQUENT LIGHTNING HAS ALSO BEEN REPORTED. THE HEAVY RAIN WILL TEMPORARILY REDUCE VISIBILITIES TO NEAR ZERO AND CAUSE STREET FLOODING..SO DRIVING PROBLEMS WILL EXIST. THE STORMS WILL DRIFT EAST INTO NORTHWEST MERCER COUNTY PENNYSLVANIA BY 200 PM. TRP
Special weather statement, May 28, 1:50 PM EDT, 1 hour 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OH 150 PM EDT TUE MAY 26 1987 A VERY STRONG THUNDERSTORM HAS DEVELOPED OVER CENTRAL LORAIN COUNTY. AT 145 PM CLEVELAND WEATHER RADAR SHOWED A VERY STRONG THUNDERSTORM OVER CENTRAL LORAIN COUNTY. THIS STORM WAS MOVING SLOWLY EAST TO NORTHEAST AT 15 MPH AND WILL MOVE INTO WESTERN CUYAHOGA COUNTY AROUND 245 PM. HEAVY RAIN AND FREQUENT LIGHTNING HAVE BEEN REPORTED IN OBERLIN. THIS ST#ORM MAY ALSO PRODUCE SOME SMALL HAIL AND GUSTY WINDS. SJN
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1987Every severe thunderstorm warning in 1987
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.