Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 152, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at Aug 31, 1993, 1:41 PM EDT for Potter County, Pennsylvania. It was in force for 64 min.
The area
The counties it named.
The facts
- Issued
- Aug 31, 1993, 1:41 PM EDT (17:41 UTC)
- Expired
- Aug 31, 1993, 2:45 PM EDT
- In force
- 64 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
County Potter County, PA
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 5.7 hours before the alert went out and 147 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
- 2434 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 802 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 156 m²/s²
- 0-3 km storm-relative helicity
- 197 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 9.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS1 KERI 311742 SVRCLE PAC105-311845- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ERIE PA 141 PM EDT TUE AUG 31 1993 THE NATIONAL WEATHER SERVICE IN ERIE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 245 PM EDT FOR THE FOLLOWING LOCATION... IN NORTHWEST PENNSYLVANIA ...POTTER COUNTY AT 135 PM WEATHER RADAR SHOWED A SEVERE THUNDERSTORM IN POTTER COUNTY IN NORTHWEST PENNSYLVANIA. THIS SEVERE STORM WAS LOCATED ABOUT 5 MILES WEST OF COUDERSPORT. THE SEVERE THUNDERSTORM WAS MOVING NORTHEAST AT 35 MILES AN HOUR. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
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, 9:08 AM EDT, 4 hours 33 minutes before
OHZ011-311415- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MANSFIELD OH 908 AM EDT TUE AUG 31 1993 SCATTERED SHOWERS AND THUNDERSTORMS WERE MOVING ACROSS PORTIONS OF NORTH CENTRAL OHIO THIS MORNING. AT 905 AM NATIONAL WEATHER SERVICE RADAR INDICATED A THUNDERSTORM NEAR LUCAS WHICH IS IN SOUTHEAST RICHLAND COUNTY. THIS STORM WAS MOVING NORTHEAST AT 30 MPH AND WILL REACH MIFFLIN IN WEST CENTRAL ASHLAND COUNTY BY 910 AM. THE THUNDERSTORM PRODUCED HEAVY RAIN AND PEA SIZE HAIL AS IT MOVED THROUGH BELLVILLE IN SOUTHERN RICHLAND COUNTY AT 850 AM. DOXEY NNNN
Special weather statement, Aug 31, 9:08 AM EDT, 4 hours 33 minutes before
OHZ011-311415- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MANSFIELD OH 908 AM EDT TUE AUG 31 1993 SCATTERED SHOWERS AND THUNDERSTORMS WERE MOVING ACROSS PORTIONS OF NORTH CENTRAL OHIO THIS MORNING. AT 905 AM NATIONAL WEATHER SERVICE RADAR INDICATED A THUNDERSTORM NEAR LUCAS WHICH IS IN SOUTHEAST RICHLAND COUNTY. THIS STORM WAS MOVING NORTHEAST AT 30 MPH AND WILL REACH MIFFLIN IN WEST CENTRAL ASHLAND COUNTY BY 910 AM. THE THUNDERSTORM PRODUCED HEAVY RAIN AND PEA SIZE HAIL AS IT MOVED THROUGH BELLVILLE IN SOUTHERN RICHLAND COUNTY AT 850 AM. DOXEY NNNN
Special weather statement, Aug 31, 9:11 AM EDT, 4 hours 30 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, 4 hours 30 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, 2 hours 56 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, 2 hours 55 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
The office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 2:32 PM EDT | Severe Thunderstorm Warning | CLE | Warren | 58 min |
| Aug 31, 2:35 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 55 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.