Alert archive / Ohio / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 99, NWS Cleveland, OH
NWS Cleveland, OH issued this severe thunderstorm warning at Jul 6, 1991, 5:18 PM EDT for Mahoning County, Ohio; Lawrence County, Pennsylvania. It was in force for 57 min.
The area
The counties it named.
The facts
- Issued
- Jul 6, 1991, 5:18 PM EDT (21:18 UTC)
- Expired
- Jul 6, 1991, 6:15 PM EDT
- In force
- 57 min
- Issued by
- NWS Cleveland, OH
- Area
- Whole counties
Counties Mahoning County, OH, Lawrence County, PA
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.3 hours before the alert went out and 263 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
- 687 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 876 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.9
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, Jul 6, 2:31 PM EDT, 2 hours 47 minutes before
OHZALL-062100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OHIO 230 PM EDT FRI JUL 5 1991 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF NORTHEAST AND EASTCENTRAL OHIO UNTIL 1000 PM EDT... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PARTS OF NORTHEAST AND EASTCENTRAL OHIO UNTIL 1000 PM EDT. SOME CITIES INCLUDED IN THIS WATCH ARE AKRON...CANTON...YOUNGSTOWN... ASHTABULA...AND STEUBENVILLE. AT 230 PM EDT RADAR SHOWED SCATTERED THUNDERSTORMS LINED UP FROM JUST EAST OF AKRON TO THE YOUNGSTOWN AREA TO THE FRANKLIN AREA OF PENNSYLVANIA. THE THUNDERSTORMS WERE POPPING UP AND DOWN RATHER QUICKLY AS THEY MOVED EAST AT ABOUT 30 MPH. ANY OF THE THUNDERSTORMS OVER NORTHEAST AND EASTCENTAL OHIO CAN BECOME SEVERE AND PRODUCE DAMAGING WINDS AND LARGE HAIL. VERY HEAVY DOWNPOURS OF RAIN CAN ALSO OCCUR WITH TEMPORARY URBAN AND DRAINING SYSTEM FLOODING THE RESULT. THE REMAINDER OF OHIO ALSO HAS A CHANCE OF SHOWERS AND THUNDERSTORMS FOR THIS AFTERNOON THROUGH TONIGHT. KAPELA
Special weather statement, Jul 6, 2:36 PM EDT, 2 hours 42 minutes before
OHZALL-062100- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE CLEVELAND OHIO 230 PM EDT SAT JUL 6 1991 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF NORTHEAST AND EASTCENTRAL OHIO UNTIL 1000 PM EDT... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PARTS OF NORTHEAST AND EASTCENTRAL OHIO UNTIL 1000 PM EDT. SOME CITIES INCLUDED IN THIS WATCH ARE CANTON...YOUNGSTOWN...ASHTABULA... AND STEUBENVILLE. AT 230 PM EDT RADAR SHOWED SCATTERED THUNDERSTORMS LINED UP FROM JUST EAST OF AKRON TO THE YOUNGSTOWN AREA TO THE FRANKLIN AREA OF PENNSYLVANIA. THE THUNDERSTORMS WERE POPPING UP AND DOWN RATHER QUICKLY AS THEY MOVED EAST AT ABOUT 30 MPH. ANY OF THE THUNDERSTORMS OVER NORTHEAST AND EASTCENTAL OHIO CAN BECOME SEVERE AND PRODUCE DAMAGING WINDS AND LARGE HAIL. VERY HEAVY DOWNPOURS OF RAIN CAN ALSO OCCUR WITH TEMPORARY URBAN AND DRAINING SYSTEM FLOODING THE RESULT. THE REMAINDER OF OHIO ALSO HAS A CHANCE OF SHOWERS AND THUNDERSTORMS FOR THIS AFTERNOON THROUGH TONIGHT. KAPELA CORRECTED FOR DATE AND CITIES INCLUDED IN WATCH
Special weather statement, Jul 6, 2:55 PM EDT, 2 hours 23 minutes before
PAZ003-062000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ERIE, PA 250 PM EDT SAT JUL 06 1991 ...THUNDERSTORMS PRODUCING HEAVY RAIN AND INTENSE LIGHTNING OVER SOUTHERN VENANGO COUNTY OF NORTHWEST PENNSYLVANIA... ...SEVERE THUNDERSTORM WATCH UNTIL 1000 PM FOR ALL OF WESTERN PENNSYLVANIA EXCEPT ERIE COUNTY... AT 240 PM EDT WEATHER RADAR SHOWED A LINE OF THUNDERSTORMS EXTENDING FROM YOUNGSTOWN OHIO EASTWARD TO DUBOIS TO SOUTHERN CAMERON COUNTY. THE LINE OF THUNDERSTORMS WAS DRIFTING SLOWLY TO THE SOUTH. THE THUNDERSTORMS CELLS WITHIN THE LINE WERE MOVING TO THE EAST AT ABOUT 30 MILES AN HOUR. THE STATE POLICE IN VENANGO COUNTY REPORTED VERY HEAVY RAIN AND INTENSE LIGHTNING NEAR INTERSTATE 80 IN SOUTHERN VENANGO COUNTY. OTHER THUNDERSTORMS CELLS MOVING EAST FROM MERCER COUNTY WILL MOVE THROUGH SOUTHERN VENANGO COUNTY WITHIN THE NEXT HOUR. THESE THUNDERSTORMS WILL CONTINUE TO BRING VERY HEAVY RAIN AND DANGEROUS LIGHTNING TO SOUTHERN VENANGO COUNTY. AS THESE STORMS CONTINUE TO MOVE ACROSS THE SAME AREAS... SOME FLOODING MAY DEVELOP ALONG SMALL STREAMS AND LOW LYING AREAS. TRAVELERS ALONG INTERSTATE 80 SHOULD BE PREPARED FOR VERY HEAVY DOWNPOURS THAT MAY CAUSE PONDING OF WATER ON ROAD SURFACES AND POOR VISIBILITY. STAY TUNED TO NOAA WEATHER RADIO FOR MORE UPDATES OR POSSIBLE WARNINGS. TJP
Special weather statement, Jul 6, 3:35 PM EDT, 1 hour 43 minutes before
OHZALL-062130- SPECIAL WEATHER STATEMENT AND AFTERNOON OHIO WEATHER STORY NATIONAL WEATHER SERVICE CLEVELAND OHIO 335 PM EDT SAT JUL 6 1991 A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PARTS OF NORTHEAST AND EAST CENTRAL OHIO UNTIL 10 PM EDT. SOME CITIES IN THE WATCH AREA INCLUDE CANTON...YOUNGSTOWN...ASHTABULA AND STEUBENVILLE. ANY OF THE THUNDERSTORMS ARE CAPABLE OF PRODUCING LARGE HAIL...DAMAGING WINDS AND VERY HEAVY DOWNPOURS. KEEP ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. FOR THE MOST PART TODAY WAS A SUNNY DAY ACROSS OHIO. LATE THIS AFTERNOON SHOWERS AND THUNDERSTORMS DEVELOPED RAPIDLY OVER PARTS OF NORTHEAST OHIO. AT 330 PM RADAR INDICATED A LINE OF SHOWERS AND THUNDERSTORMS FROM NEAR RAVENNA TO YOUNGSTOWN TO SOUTH OF FRANKLIN PENNSYLVANIA. THE STORMS WERE MOVING SOUTHEAST 30 MPH. < AN AREA OF SHOWERS AND THUNDERSTORMS THIS MORNING CLIPPED THE SOUTHWEST CORNER OF THE STATE WITH RAINFALL AMOUNTS IN THE CINCINNATI AREA FROM A QUARTER TO A HALF INCH. MIAMITOWN JUST WEST OF CINCINNATI RECEIVED AN INCH OF RAIN DURING A THUNDERSTORM. TEMPERATURES THIS AFTERNOON WERE IN THE MID 80S TO LOWER 90S. HUMIDITIES WERE MOSTLY IN THE 50 TO 60 PERCENT RANGE MAKING IT A BIT MORE MUGGY THAN YESTERDAY. WINDS WERE MOSTLY FROM THE SOUTHWEST 10 TO 20 MPH AND GUSTY IN SOME AREAS. IT WILL BE PARTLY CLOUUDY WITH A CHANCE OF SHOWERS AND THUNDERSTORMS OVER OHIO TONIGHT. LOWS WILL BE 70 TO 75. IT WILL BE PARTLY CLOUDY SUNDAY THROUGH MONDAY WITH SCATTERED SHOWERS AND THUNDERSTORMS. HIGHS WILL BE 90 TO 95 SUNDAY AND IN THE MID TO UPPER 80S MONDAY. LOWS SUNDAY NIGHT WILL BE 65 TO 70. LATE THIS AFTERNOON WEAK HIGH PRESSURE WAS OVER OHIO. A COLD FRONT WAS FROM WISCONSIN TO SOUTHERN NEBRASKA. THE HIGH WILL MOVE SOUTH TONIGHT WHILE THE COLD FRONT MOVES TO EXTREME NORTHERN OHIO BY SUNDAY MORNING. THE FRONT REMAIN NORTH OF OHIO AS A WARM FRONT SUNDAY NIGHT. ANOTHER COLD FRONT WILL APPROACH NORTHWESpT OHIO MONDAY MORNING. MORAVEK
Special weather statement, Jul 6, 4:50 PM EDT, 28 minutes before
OHZALL-062145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CLEVELAND OHIO 449 PM EDT SAT JUL 6 1991 A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT IN PARTS OF EASTERN OHIO UNTIL 10 PM. HOT AND HUMID WEATHER THIS AFTERNOON HAS PRODUCED VERY UNSTABLE CONDITIONS ACROSS THE BUCKEYE STATE. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM FOR THAT PART OF OHIO GENERALLY EAST OF A LINE FROM 20 MILES SOUTHEAST OF CLEVELAND TO WOODSFIELD WHICH IS 40 MILES NORTHEAST OF MARIETTA. THUNDERSTORMS MAY DEVELOP JUST ABOUT ANYWHERE THIS EVENING ACROSS THE STATE AND SOME WILL PRODUCE SEVERE WEATHER AS WELL AS LOCALIZED FLOOD PRODUCING DOWNPOURS. IF THREATENING WEATHER APPROACHES YOUR ARREA THIS EVENING BE PREPARED TO MOVE TO SAFETY. HEATHFIELD
Local storm report, Jul 6, 5:13 PM EDT, 5 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE ERIE, PA
510 PM EDT SAT JUL 06 1991
STORM REPORT FOR SATURDAY JULY 6 1991
TIME EDT EVENT
=====================================================================
1600 EDT TREES DOWN IN SOUTHERN VENANGO COUNTY NEAR
NICKLEVILLE. REPORTED BY STATE POLICE.
zThe office that day
Everything else NWS Cleveland, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 3:05 PM EDT | Severe Thunderstorm Warning | CLE | Mahoning | 55 min |
| Jul 6, 4:13 PM EDT | Flash Flood Warning | CLE | Mahoning | 62 min |
| Jul 6, 4:13 PM EDT | Severe Thunderstorm Warning | CLE | Mahoning | 62 min |
| Jul 6, 5:18 PM EDT | Flash Flood Warning | CLE | Mahoning | 57 min |
| Jul 6, 2:18 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 57 min |
| Jul 6, 3:15 PM EDT | Severe Thunderstorm Warning | CLE | Venango | 60 min |
Nearby
Severe Thunderstorm Warnings in Ohio, 1991Severe Thunderstorm Warnings in Pennsylvania, 1991Every severe thunderstorm warning in 1991
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.