Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 154, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at Aug 31, 1993, 2:35 PM EDT for Mercer County, Pennsylvania. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- Aug 31, 1993, 2:35 PM EDT (18:35 UTC)
- Expired
- Aug 31, 1993, 3:30 PM EDT
- In force
- 55 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
County Mercer County, PA
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 6.6 hours before the alert went out and 100 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
- 1466 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 1155 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Aug 31, 9:11 AM EDT, 5 hours 24 minutes before
PAZ002-311400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ERIE, PA 911 AM EDT TUE AUG 31 1993 AT 905 AM EDT RADAR AT THE ERIE INTERNATIONAL AIRPORT SHOWED A STRONG THUNDERSTORM NEAR THE PYMATUNING RESERVOIR ALONG THE PENNSYLVANIA AND OHIO BORDER. THIS THUNDERSTORM IS MOVING TO THE EAST AT 30 MILES PER HOUR AND WILL ENTER WESTERN CRAWFORD COUNTY IN THE NEXT 30 MINUTES. THIS STORM IS CAPABLE OF PRODUCING LOCALLY HEAVY DOWNPOURS AND STRONG GUSTY WINDS ARE ALSO POSSIBLE. BELK
Special weather statement, Aug 31, 9:11 AM EDT, 5 hours 24 minutes before
PAZ002-311400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ERIE, PA 911 AM EDT TUE AUG 31 1993 AT 905 AM EDT RADAR AT THE ERIE INTERNATIONAL AIRPORT SHOWED A STRONG THUNDERSTORM NEAR THE PYMATUNING RESERVOIR ALONG THE PENNSYLVANIA AND OHIO BORDER. THIS THUNDERSTORM IS MOVING TO THE EAST AT 30 MILES PER HOUR AND WILL ENTER WESTERN CRAWFORD COUNTY IN THE NEXT 30 MINUTES. THIS STORM IS CAPABLE OF PRODUCING LOCALLY HEAVY DOWNPOURS AND STRONG GUSTY WINDS ARE ALSO POSSIBLE. BELK
Special weather statement, Aug 31, 10:45 AM EDT, 3 hours 50 minutes before
PAZ001-PAZ002-311700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ERIE, PA 1045 AM EDT TUE AUG 31 1993 AT 1040 AM EDT RADAR AT THE ERIE INTERNATIONAL AIRPORT INDICATED ISOLATED THUNDERSTORMS DEVOLOPING OVER NORTHWEST PENNSYLVANIA IN THE WARM AND UNSTABLE AIR AHEAD OF A COLD FRONT MOVING INTO THE LOWER GREAT LAKES. THUNDERSTORMS CAN BE EXPECTED TO PERSIST IN NORTHWEST PENNSYLVANIA INTO THIS AFTERNOON AND EVENING. SOME OF THESE THUNDERSTORMS COULD PRODUCE LOCALLY HEAVY DOWNPOURS...DANGEROUS LIGHTNING...STRONG GUSTY WINDS AND POSSIBLY HAIL. THESE THUNDERSTORMS WILL MOVE TO THE EAST AT 35 MILES PER HOUR. BELK/SANDSTROM
Special weather statement, Aug 31, 10:46 AM EDT, 3 hours 49 minutes before
PAZ001-PAZ002-311700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ERIE, PA 1045 AM EDT TUE AUG 31 1993 AT 1040 AM EDT RADAR AT THE ERIE INTERNATIONAL AIRPORT INDICATED ISOLATED THUNDERSTORMS DEVOLOPING OVER NORTHWEST PENNSYLVANIA IN THE WARM AND UNSTABLE AIR AHEAD OF A COLD FRONT MOVING INTO THE LOWER GREAT LAKES. THUNDERSTORMS CAN BE EXPECTED TO PERSIST IN NORTHWEST PENNSYLVANIA INTO THIS AFTERNOON AND EVENING. SOME OF THESE THUNDERSTOpRMS COULD PRODUCE LOCALLY HEAVY DOWNPOURS...DANGEROUS LIGHTNING...STRONG GUSTY WINDS AND POSSIBLY HAIL. THESE THUNDERSTORMS WILL MOVE TO THE EAST AT 35 MILES PER HOUR. BELK/SANDSTROM
Special weather statement, Aug 31, 2:15 PM EDT, 20 minutes before
OHZALL-311930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OH 215 PM EDT TUE AUG 31 1993 SEVERE THUNDERSTORM WARNINGS ARE IN EFFECT FOR MEDINA AND CUYAHOGA COUNTIES IN NORTHEAST OHIO UNTIL 315 PM EDT. A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH OF OHIO UNTIL 9 PM EDT. THE ONLY PARTS OF OHIO THAT ARE NOT UNDER THE SEVERE THUNDERSTORM WATCH IS NORTHWEST OHIO AND EXTREME SOUTHEAST OHIO. SOME CITIES INCLUDED IN THE WATCH ARE CINCINNATI...COLUMBUS... CLEVELAND...AKRON...CANTON...DAYTON...ZANESVILLE... AND STEUBENVILLE. SEVERE THUNDERSTORM WARNINGS THAT WERE IN EFFECT FOR LAKE AND ASHTABULA COUNTIES IN NORTHEAST OHIO EXPIRED AT 215 PM. DURING THE EARLY AFTERNOON SCATTERED THUNDERSTORMS WERE DEVELOPING ACROSS MUCH OF OHIO. AT 215 PM THE STRONGEST STORMS WERE OVER NORTHEAST OHIO NEAR CLEVELAND. THE STORMS WERE MOVING FROM THE SOUTHWEST AT 30 MPH. SEVERE THUNDERSTORMS PRODUCE STRONG WINDS OVER 55 MPH AND LARGE HAIL THREE-QUARTERS OF AN INCH IN DIAMETER OR LARGER. ALMOST ANY THUNDERSTORM IN OHIO IS CAPABLE OF PRODUCING SEVERE WEATHER THIS AFTERNOON. THESE THUNDERSTORMS ARE ALSO CAPABLE OF DEVELOPING QUICKLY SO SEVERE WEATHER COULD STRIKE WITH LITTLE ADVANCE WARNING. THE STRONG THUNDERSTORMS WERE DEVELOPING AHEAD OF A COLD FRONT NOW ENTERING NORTHWEST OHIO. THE VERY WARM AND HUMID WEATHER AHEAD OF THE FRONT WILL CONTRIBUTE TO THE THUNDERSTORM DEVELOPMENT. OHIOANS SHOULD BE ALERT TO THE POTENTIAL FOR SEVERE WEATHER THIS AFTERNOON AND THIS EVENING. IF A WARNING IS ISSUED TAKE SHELTER INDOORS IN A STRONG BUILDING. LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR POSSIBLE WARNINGS AND THE LATEST WEATHER INFORMATION. KOSARIK
Special weather statement, Aug 31, 2:18 PM EDT, 17 minutes before
OHZALL-311930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OH 215 PM EDT TUE AUG 31 1993 SEVERE THUNDERSTORM WARNINGS ARE IN EFFECT FOR MEDINA AND CUYAHOGA COUNTIES IN NORTHEAST OHIO UNTIL 315 PM EDT. A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH OF OHIO UNTIL 9 PM EDT. THE ONLY PARTS OF OHIO THAT ARE NOT UNDER THE SEVERE THUNDERSTORM WATCH IS NORTHWEST OHIO AND EXTREME SOUTHEAST OHIO. SOME CITIES INCLUDED IN THE WATCH ARE CINCINNATI...COLUMBUS... CLEVELAND...AKRON...CANTON...DAYTON...ZANESVILLE... AND STEUBENVILLE. SEVERE THUNDERSTORM WARNINGS THAT WERE IN EFFECT FOR LAKE AND ASHTABULA COUNTIES IN NORTHEAST OHIO EXPIRED AT 215 PM. DURING THE EARLY AFTERNOON SCATTERED THUNDERSTORMS WERE DEVELOPING ACROSS MUCH OF OHIO. AT 215 PM THE STRONGEST STORMS WERE OVER NORTHEAST OHIO NEAR CLEVELAND. THE STORMS WERE MOVING FROM THE SOUTHWEST AT 30 MPH. SEVERE THUNDERSTORMS PRODUCE STRONG WINDS OVER 55 MPH AND LARGE HAIL THREE-QUARTERS OF AN INCH IN DIAMETER OR LARGER. ALMOST ANY THUNDERSTORM IN OHIO IS CAPABLE OF PRODUCING SEVERE WEATHER THIS AFTERNOON. THESE THUNDERSTORMS ARE ALSO CAPABLE OF DEVELOPING QUICKLY SO SEVERE WEATHER COULD STRIKE WITH LITTLE ADVANCE WARNING. THE STRONG THUNDERSTORMS WERE DEVELOPING AHEAD OF A COLD FRONT NOW ENTERING NORTHWEST OHIO. THE VERY WARM AND HUMID WEATHER AHEAD OF THE FRONT WILL CONTRIBUTE TO THE THUNDERSTORM DEVELOPMENT. OHIOANS SHOULD BE ALERT TO THE POTENTIAL FOR SEVERE WEATHER THIS AFTERNOON AND THIS EVENING. IF A WARNING IS ISSUED TAKE SHELTER INDOORS IN A STRONG BUILDING. LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR POSSIBLE WARNINGS AND THE LATEST WEATHER INFORMATION. KOSARIK \
The office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 9:07 AM EDT | Severe Thunderstorm Warning | CLE | Ashtabula | 53 min |
| Aug 31, 1:12 PM EDT | Severe Thunderstorm Warning | CLE | Ashtabula | 63 min |
| Aug 31, 1:26 PM EDT | Severe Thunderstorm Warning | CLE | Lake | 49 min |
| Aug 31, 2:42 PM EDT | Severe Thunderstorm Warning | CLE | Portage, Summit | 63 min |
| Aug 31, 3:27 PM EDT | Severe Thunderstorm Warning | CLE | Columbiana, Mahoning | 48 min |
| Aug 31, 5:17 PM EDT | Severe Thunderstorm Warning | CLE | Mahoning | 58 min |
| Aug 31, 9:20 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 25 min |
| Aug 31, 1:08 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 67 min |
| Aug 31, 1:36 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 69 min |
| Aug 31, 1:41 PM EDT | Severe Thunderstorm Warning | CLE | Potter | 64 min |
| Aug 31, 2:32 PM EDT | Severe Thunderstorm Warning | CLE | Warren | 58 min |
| Aug 31, 2:43 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 62 min |
| Aug 31, 3:59 PM EDT | Severe Thunderstorm Warning | CLE | Elk | 61 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1993Every severe thunderstorm warning in 1993
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.