A strong upper level low combined with a cold front to produce showers and thunderstorms. One of these storms produced a very weak tornado.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS ILN wrote it up.
A strong upper level low combined with a cold front to produce showers and thunderstorms. One of these storms produced a very weak tornado.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Wilmington, OH wrote its last area forecast discussion before the first event at Aug 12, 8:26 AM EST, 1 hour 49 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 926 AM EDT TUE AUG 12 2014 .SYNOPSIS... A COLD FRONT AND UPPER LEVEL TROUGH WILL CROSS THE REGION TODAY. HIGH PRESSURE WILL BUILD IN THE UPPER MIDWEST ON WEDNESDAY AND THEN SETTLE OVER THE OHIO VALLEY THURSDAY NIGHT. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... A COLD FRONT IS PUSHING EAST ACROSS WESTERN OHIO THIS MORNING AND A NARROW LINE OF SHOWERS AND THUNDERSTORMS HAS DEVELOPED JUST AHEAD OF IT ACROSS CENTRAL OHIO. AS WE PROGRESS INTO THIS AFTERNOON...THE BETTER INSTABILITY AND SHEAR WILL BE JUST OFF TO OUR EAST. THE LATEST HRRR SEEMS TO HAVE A GOOD HANDLE ON THE CURRENT SITUATION...WITH THE CURRENT LINE OF STORMS INTENSIFYING AS IT PUSHES EAST OF OUR AREA INTO THE MORE FAVORABLE AIRMASS LATER THIS MORNING INTO EARLY AFTERNOON. MEANWHILE...EXPECT SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS TO SPREAD BACK IN FROM THE NORTHWEST THROUGH THE AFTERNOON HOURS AS THE UPPER LEVEL TROUGH AXIS PIVOTS INTO THE AREA. THIS WILL LIKELY BE DIURNALLY ENHANCED SO EXPECT HIGHEST POPS WITH THIS ACROSS OUR NORTHWEST...DECREASING OFF TO THE SOUTHEAST THROUGH LATE AFTERNOON/EARLY EVENING AS WE START TO LOSE THE DAYTIME HEATING. EXPECT HIGHS TODAY RANGING FROM THE LOW TO MID 70S ACROSS THE NORTHWEST TO THE UPPER 70S/NEAR 80 IN THE FAR SOUTHEAST. && .SHORT TERM /6 PM THIS EVENING THROUGH FRIDAY/... ANY SEMBLANCE OF SHOWERS SHOULD BE WELL EAST OF THE CWA BY NIGHTFALL. WNW WINDS AT THE SURFACE WITH HIGH PRESSURE BUILDING IN THE MIDWEST WILL HELP DRIER AIR TO BE PULLED INTO THE OHIO VALLEY. NAM AND CANADIAN MODEL ARE SHOWING A POSSIBILITY OF A SPRINKLE OVER THE REGION IN THE PREDAWN HOURS WED MORNING. IF THIS WERE TO OCCUR...IT IS PURELY FROM THE COLD POOL OF AIR ALOFT. ATTM...I DO NOT SEE ENOUGH MOISTURE TO ALLOW THE COLD POOL TO WRING OUT A SHOWER AND HAVE LEFT THE FORECAST DRY. ON WEDNESDAY...NORTHWEST WINDS WILL KEEP THE COLD AIR OVER THE REGION WITH HIGHS STAYING IN THE LOW TO MID 70S. A WEAK BOUNDARY WILL LINGER NORTH OF KY AND THE REAL COLD PUSH ON NORTHERLY WINDS WILL POSSIBLY SQUEEZE OUT A SHOWER WNW TO ESE OF METRO CINCY ON THURSDAY AFTERNOON...SLOWLY PUSHING SOUTH INTO KY BY EVENING. THE CENTER OF THE HIGH WILL SETTLE OVER THE CWA BY FRIDAY MORNING AND LOWS THURSDAY NIGHT WILL DROP DOWN INTO THE LOWER 50S ACROSS THE AREA. && .LONG TERM /FRIDAY NIGHT THROUGH MONDAY/... NORTHWEST FLOW ALOFT AT THE BEGINNING OF THE PERIOD WILL FLATTEN AND BECOME MORE ZONAL OVER THE WEEKEND. 12Z MODELS ARE IN REASONABLE AGREEMENT THAT A SHORT WAVE WILL PUSH INTO THE REGION ON MONDAY. AT THE SURFACE HIGH PRESSURE WILL DOMINATE LATE IN THE WEEK BEFORE SLIDING OFF TO THE SOUTHEAST DURING THE WEEKEND. CANNOT COMPLETELY RULE OUT SOME STORMS ACROSS THE NORTHERN COUNTIES OVER THE WEEKEND ON THE SOUTHERN FRINGE OF A MORE ACTIVE CONVECTIVE CORRIDOR ACROSS THE GREAT LAKES. BUT BETTER CHANCE OF SHOWERS AND THUNDERSTORMS ARE EXPECTED ON MONDAY. TEMPERATURES EARLY IN THE PERIOD WILL BE BELOW NORMAL BUT THEN WARM TO ABOVE NORMAL EARLY NEXT WEEK. && .AVIATION /13Z TUESDAY THROUGH SATURDAY/... IFR STRATUS DEVELOPED ACROSS THE ERN TAFS THIS MORNING...ALONG WITH MVFR FOG AT MOST LOCATIONS. NOW A SFC TROF THAT SHIFTS THE WINDS TO THE W IS PUSHING THRU INDIANA. AHEAD OF THIS TROF...AN AREA OF AC IS DEVELOPING...BUT THEN ADDITIONAL MVFR STRATUS HAS DEVELOP ACROSS INDIANA. MEANWHILE A VIGOROUS H5 S/W WILL DIG INTO THE REGION THIS AFTN...PROVIDING LIFT FOR CONVECTION. EXPECT THE STRATUS TO AFFECT THE REGION THRU 14-15Z...THEN THE AIRMASS WILL DESTABILIZE....ESPECIALLY OVER THE ERN TAFS. CONVECTION ALLOWING MODELS DEVELOP PCPN ACROSS THE ERN TAFS LATE THIS MORNING...BUT LEAVE THE W DRY. FOLLOWED THIS SCENARIO BY PUTTING VCTS IN THE ERN TAFS FROM 15-18Z. AS THE UPPER TROF APPROACHES THIS AFTN A FEW SHRA COULD AFFECT THE WRN TAFS IN THE AFTN. THE H5 TROF S/W WILL WORK E AFT 00Z. THIS SHOULD BRING AN END TO THE SHOWER/THUNDERSTORM THREAT. MVFR STRATUS COULD REDEVELOP AFT 06Z TONIGHT. OUTLOOK...NO SIGNIFICANT WEATHER EXPECTED. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...NONE. KY...NONE. IN...NONE. && SYNOPSIS...FRANKS NEAR TERM...JGL SHORT TERM...FRANKS LONG TERM... AVIATION...SITES
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE WILMINGTON OH 1021 AM EDT TUE AUG 12 2014 INZ050-058-059-066-073>075-080-KYZ089>096-OHZ026-034-035-042>045- 051>054-060>063-070>072-077-078-131430- WAYNE-FAYETTE IN-UNION IN-FRANKLIN IN-RIPLEY-DEARBORN-OHIO- SWITZERLAND-CARROLL-GALLATIN-BOONE-KENTON-CAMPBELL-OWEN-GRANT- PENDLETON-HARDIN-MERCER-AUGLAIZE-DARKE-SHELBY-LOGAN-UNION OH-MIAMI- CHAMPAIGN-CLARK-MADISON-PREBLE-MONTGOMERY-GREENE-FAYETTE OH-BUTLER- WARREN-CLINTON-HAMILTON-CLERMONT- 1021 AM EDT TUE AUG 12 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL INDIANA...SOUTHEAST INDIANA...NORTHERN KENTUCKY...CENTRAL OHIO...MIAMI VALLEY OF OHIO...SOUTHWEST OHIO AND WEST CENTRAL OHIO. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. KYZ097>100-OHZ046-055-056-064-065-073-074-079>082-088-131430- BRACKEN-ROBERTSON-MASON-LEWIS-DELAWARE-FRANKLIN OH-LICKING-PICKAWAY- FAIRFIELD-ROSS-HOCKING-BROWN-HIGHLAND-ADAMS-PIKE-SCIOTO- 1021 AM EDT TUE AUG 12 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST KENTUCKY...NORTHERN KENTUCKY...CENTRAL OHIO AND SOUTH CENTRAL OHIO. .DAY ONE...TODAY AND TONIGHT. SHOWERS AND THUNDERSTORMS AHEAD OF A COLD FRONT MAY PRODUCE SMALL HAIL...GUSTY WINDS...AND LOCALLY HEAVY RAINFALL THROUGH EARLY AFTERNOON. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The Cincinnati radar (KILN), 132 km away, was scanning. The volume nearest the first event began at 15:15 UTC.
1 tornado. Local standard time, as filed.
Video from the public confirmed a very brief and weak tornado on the ground for a few seconds with minimal damage.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2014Every state in 2014This day in weather historyThe tornado archive for Ohio, 2014Warnings in Ohio, August 2014
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 532243.