A weak frontal boundary pushed south into the region with modest instability and shear. The storms were generally poorly organized but managed to produce some pockets of strong to severe wind.
Every event with a place to put it. Tap one for its entry below.
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 weak frontal boundary pushed south into the region with modest instability and shear. The storms were generally poorly organized but managed to produce some pockets of strong to severe wind. One brief tornado touchdown also occurred with the storms.
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 Sep 22, 1:43 PM EST, 1 hour 46 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 243 PM EDT WED SEP 22 2010 .SYNOPSIS... A WEAK COLD FRONT WILL PUSH INTO NORTHERN PORTIONS OF THE AREA THIS EVENING. THHIS FRONT WILL LIFT BACK NORTH AS A WARM FRONT ON THURSDAY...ALLOWING A HOT SOUTHERLY FLOW TO DEVELOP. ANOTHER COLD FRONT WILL AFFECT THE REGION ON FRIDAY. && .NEAR TERM /THROUGH TONIGHT/... MODELS ARE NOT HANDLING CURRENT MESOSCALE FEATURES THIS AFTN...SO WILL HAVE TO BASE FORECAST ON CURRENT TRENDS. A VORT MAX WAS LOCATED OVER CNTRL INDIANA THIS AFTN. THIS VORT MAX WILL MOVE INTO OHIO BY THIS EVENING. MEANWHILE...A THERMAL TROF WAS NOTED AT THE SFC ACRS THE SRN CWFA. THE VORT MAX AND THE THERMAL TROF WILL COMBINED TO BRING SOME WEAK FORCING TO THE REGION. AS A RESULT...SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP THROUGH THE REMAINDER OF THE AFTN. MLCAPES HAVE REACHED AT LEAST 1000 J/KG...ESPECIALLY ALONG AND SOUTH OF I-70 SO MODERATE INSTABILITY IS IN PLACE. ALSO...DCAPE VALUES IN THE HOTTER AIRMASS WERE RANGING FROM 1000-1300 J/KG WHICH IS INDICATIVE OF DOWNBURST POTENTIAL. THUS...WILL HAVE TO MONITOR THUNDERSTORMS FOR POTENTIAL SEVERE WIND GUSTS AND MARGINAL SEVERE HAIL THIS AFTN AND EVENING. OTHERWISE...A WEAK COLD FRONT WILL DIP INTO CNTRL INDIANA AND CNTRL OHIO THIS EVENING...STALL OUT AROUND MIDNIGHT...THEN HEAD NE AS A WARM FRONT LATE TONIGHT AS UPR LVL RIDGE BEGINS TO REESTABLISH ITSELF ACRS THE OHIO VALLEY. PCPN IS FORECAST TO END BY MIDNIGHT AS VORT MAX SHEARS AND THE AIRMASS STABILIZES. && .SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/... UPR LVL RIDGE WILL ONCE AGAIN BE LOCATED ACRS THE OHIO VALLEY REGION ON THURSDAY. WITH MOSTLY SUNNY SKIES AND 850 MB TEMPS APPROACHING +19 C...TEMPERATURES WILL SOAR INTO THE LOWER 90S. RECORD HIGHS APPEAR TO BE IN JEOPARDY ON THURSDAY. THE RECORDS ARE 90...93...AND 92 AT CMH...DAY AND CVG RESPECTIVELY. CMH SHOULD BREAK THEIR RECORD AND CVG WILL AT LEAST TIE. DAY MAY BE HARD PRESSED TO REACH 93 DEGREES. FOR THURSDAY NIGHT...UPR LVL RIDGE WILL BEGIN TO SHIFT EAST. SFC PRESSURE GRADIENT SHOULD PROVIDE FOR SOME WIND...WHICH WILL PREVENT RADIATIONAL COOLING. THIS WILL RESULT IN WARM OVERNIGHT LOWS FOR LATE SEPTEMBER. FOR FRIDAY INTO FRIDAY NIGHT...AN UPR LVL TROF AND COLD FRONT WILL MOVE ACRS THE GREAT LAKES AND OHIO VALLEY REGION. MAIN UPR LVL DYNAMICS STAY TO THE N. LOW LEVEL MOISTURE SEEMS TO POOL RIGHT AHEAD OF THE FRONT AND THUS WILL NOT BE COLLOCATED WITH THE WARMEST TEMPERATURES. THE END RESULT WILL BE WEAK INSTABILITY DESPITE A GOOD WIND SHEAR REGIME. SPEAKING OF WINDS...WITH DEEPENING SFC LOW TO THE NORTH AND STRONG WINDS ALOFT...BREEZY CONDITIONS WILL DEVELOP ON FRIDAY WITH WIND GUSTS RANGING FROM NEAR 30 MPH SOUTH TO AROUND 40 MPH NORTH. WITH WEAK LOW LEVEL FORCING IN ASSOCIATION WITH THE FRONT...HAVE KEPT POPS IN THE LOW CHANCE CATEGORY. DEPENDING ON HOW FAST THE FRONT MOVES...TEMPERATURES COULD AGAIN GET SNEAKY WARM...ESPECIALLY IN OUR E/SE CWFA. AM EXPECTING PCPN TO COME TO AN END FRIDAY NIGHT AS FORCING DWINDLES AWAY. && .LONG TERM /SATURDAY THROUGH WEDNESDAY/... THE MODELS ARE IN GENERAL AGREEMENT TO START OFF THE LONG RANGE FORECAST...AND THE PATTERN THAT EVOLVES THROUGH MONDAY WITH A CUTOFF LOW OVER THE MID-MISSISSIPPI VALLEY. FROM THERE THE EVOLUTION IS NOT HANDLED WELL AT ALL AND THE FORECAST CONFIDENCE GOES SHARPLY DOWN. THE COLD FRONT CROSSING THE REGION WILL LEAVE DRIER AND COOLER CONDITIONS FOR SATURDAY. THE FOCUS WILL THEN BE ON MOISTURE GETTING PULLED NORTHWARD AROUND THE CUTOFF LOW...AND PROVIDING A CHANCE OF SHOWERS AND STORMS FOR THE OHIO VALLEY. THE LOW WILL STICK AROUND THROUGH AT LEAST TUESDAY...BUT THE OPERATIONAL GFS KEEPS IT IN PLACE OVER THE MISSISSIPPI VALLEY THROUGH THE END OF THE WEEK. THE GFS ENSEMBLE MEMBERS PREDICT THE LOW TO MOVE OUT TO THE NORTHEAST AT VARIOUS TIMES FROM WEDNESDAY THROUGH FRIDAY. THESE DIFFERENCES IN TIMING AT THE CURRENT RUN TIME AND FROM PAST RUNS INDICATE A LOW CONFIDENCE IN HOW THINGS WILL EVOLVE. SO...WILL GO WITH SMALL CHANGES FOR NOW. HAVE EXTENDED POPS THROUGH THE DAY TUESDAY...WITH THE UNDERSTANDING THAT THE REST OF THE WEEK IS NOT A SURE BET TO BE DRY EITHER. TEMPS WILL BE SEASONABLE TO SLIGHTLY BELOW NORMAL...WITH THE CLOUDS AND PRECIPITATION EXPECTED TO OFFSET SOME WARM ADVECTION AROUND THE CLOSED LOW. && .AVIATION /19Z WEDNESDAY THROUGH MONDAY/... H5 S/W SWINGING THRU THE OH VLY IS SUPPORTING CONVECTIVE SYSTEM MOVG THRU INDIANA. A FEW CELLS HAVE DEVELOPED S OF THIS SYSTEM IN SRN INDIANA WHERE DAYTIME HEATING HAS CREATED SOME SFC INSTABILITY. BULK OF INDIANA CONVECTIVE SYSTEM WILL MISS THE TAFS. KDAY MIGHT GET BRUSHED BY IT IN THE 19-22Z TIME FRAME. KEPT THE PCPN AS A VCSH AT KDAY WITH THE INITIAL PACKAGE. THERE HAS BEEN SOME DEVELOPMENT ON THE SRN EDGE...SO WILL HAVE TO KEEP AN EYE OUT FOR AN AMENDMENT. REST OF TAFS SHOULD REMAIN VFR. CDFNT STALLS OUT IN NRN OH THIS EVENING AND H5 S/W SWINGS E. SKIES SHOULD BECOME MOSTLY CLR AS THE SYSTEM PUSHES E. H5 RIDGE REBUILDS ACRS THE FA BY 12Z THU...PUSHING THE FNT N INTO MI. OUTLOOK...THUNDERSTORMS POSSIBLE FRIDAY. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...NONE. KY...NONE. IN...NONE. && SYNOPSIS...HICKMAN NEAR TERM...HICKMAN SHORT TERM...HICKMAN LONG TERM...HATZOS AVIATION...SITES
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE WILMINGTON OH 500 AM EDT WED SEP 22 2010 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-230900- WAYNE-FAYETTE IN-UNION IN-FRANKLIN IN-RIPLEY-DEARBORN-OHIO- SWITZERLAND-CARROLL-GALLATIN-BOONE-KENTON-CAMPBELL-OWEN-GRANT- PENDLETON-BRACKEN-ROBERTSON-MASON-LEWIS-HARDIN-MERCER-AUGLAIZE-DARKE- SHELBY-LOGAN-UNION OH-DELAWARE-MIAMI-CHAMPAIGN-CLARK-MADISON- FRANKLIN OH-LICKING-PREBLE-MONTGOMERY-GREENE-FAYETTE OH-PICKAWAY- FAIRFIELD-BUTLER-WARREN-CLINTON-ROSS-HOCKING-HAMILTON-CLERMONT-BROWN- HIGHLAND-ADAMS-PIKE-SCIOTO- 500 AM EDT WED SEP 22 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL INDIANA...SOUTHEAST INDIANA...NORTHEAST KENTUCKY...NORTHERN KENTUCKY...CENTRAL OHIO...MIAMI VALLEY OF OHIO...SOUTH CENTRAL OHIO...SOUTHWEST OHIO AND WEST CENTRAL OHIO. .DAY ONE...TODAY AND TONIGHT. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
1219 PM EDT WED SEP 22 2010
OHZ045-046-221715-
DELAWARE OH-UNION OH-
1219 PM EDT WED SEP 22 2010
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN UNION AND NORTHWESTERN
DELAWARE COUNTIES THROUGH 115 PM EDT...
AT 1215 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR
RAYMOND...MOVING EAST AT 50 MPH.
WIND GUSTS TO 40 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS STORM.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...RICHWOOD AND ASHLEY.
ALSO...SOMERSVILLE...PHARISBURG...ESSEX...MAGNETIC SPRINGS...RADNOR
AND DELAWARE STATE PARK ARE NEAR THE PATH OF THIS STRONG
THUNDERSTORM.
LAT...LON 4045 8324 4044 8302 4043 8301 4042 8291
4037 8292 4028 8353 4047 8351 4051 8335
4051 8325SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
243 PM EDT WED SEP 22 2010
INZ050-059-OHZ042-060-221930-
WAYNE IN-UNION IN-DARKE OH-PREBLE OH-
243 PM EDT WED SEP 22 2010
...A STRONG THUNDERSTORM WILL AFFECT PREBLE...SOUTHERN DARKE...
NORTHEASTERN UNION AND SOUTHEASTERN WAYNE COUNTIES THROUGH 330 PM
EDT...
AT 239 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR WITTS
STATION...MOVING EAST AT 35 MPH.
WIND GUSTS TO 50 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS STORM.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...NEW PARIS...CAMDEN...
EATON...NEW MADISON...GRATIS...WEST ALEXANDRIA...LEWISBURG AND
ARCANUM.
ALSO...SPRING GROVE...RICHMOND MUNICIPAL AIRPORT...FAIRHAVEN...
MORNING SUN...MIDDLEBORO...WEST FLORENCE...SUGAR VALLEY AND
MUTTONVILLE ARE NEAR THE PATH OF THIS STRONG THUNDERSTORM.
RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THIS STORM BECOMES
STRONGER...THEN A WARNING MAY BE NEEDED.
LAT...LON 3988 8498 4007 8442 3992 8442 3992 8449
3961 8449 3957 8497SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
314 PM EDT WED SEP 22 2010
OHZ042-043-051-060-061-222000-
MIAMI OH-DARKE OH-SHELBY OH-MONTGOMERY OH-PREBLE OH-
314 PM EDT WED SEP 22 2010
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT EASTERN PREBLE...
MONTGOMERY...SOUTHERN SHELBY...EASTERN DARKE AND MIAMI COUNTIES
THROUGH 400 PM EDT...
AT 308 PM EDT...RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE
EXTENDING FROM VERSAILLES TO CAMDEN...MOVING EAST AT 45 MPH.
WIND GUSTS TO 50 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE
STORMS.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...PLEASANT HILL...WEST
MILTON...PIQUA...ENGLEWOOD...SIDNEY...TROTWOOD...TROY...TIPP CITY...
MIAMISBURG...VANDALIA...WEST CARROLLTON AND MORAINE.
ALSO...PHILLIPSBURG...BROOKVILLE...GARLAND...LUDLOW FALLS...
FARMERSVILLE...NEWBERN...HARDIN AND NEW LEBANON ARE NEAR THE PATH OF
THIS LINE OF STRONG THUNDERSTORMS.
RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THESE STORMS BECOME
STRONGER...THEN A WARNING MAY BE NEEDED.
LAT...LON 4033 8402 4001 8404 3959 8418 3959 8447
3957 8448 3957 8475 4030 8455
HATZOSSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
336 PM EDT WED SEP 22 2010
OHZ043-044-051>053-061-062-222015-
GREENE OH-CLARK OH-MIAMI OH-CHAMPAIGN OH-SHELBY OH-LOGAN OH-
MONTGOMERY OH-
336 PM EDT WED SEP 22 2010
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT EASTERN MONTGOMERY...
SOUTHERN LOGAN...SOUTHEASTERN SHELBY...CHAMPAIGN...EASTERN MIAMI...
CLARK AND GREENE COUNTIES THROUGH 415 PM EDT...
AT 334 PM EDT...RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE
EXTENDING FROM SIDNEY TO KETTERING...MOVING EAST AT 55 MPH.
WIND GUSTS TO 50 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE
STORMS.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...WRIGHT-PATTERSON AFB...
BEAVERCREEK...FAIRBORN...BELLBROOK...BELLEFONTAINE...ENON...WEST
LIBERTY...YELLOW SPRINGS...XENIA...URBANA...SPRINGFIELD AND
WILBERFORCE.
ALSO...SPRINGHILLS...CENTERVILLE...CRYSTAL LAKES...DIALTON...
THACKERY...NORTH HAMPTON...DONNELSVILLE AND TERRE HAUTE ARE NEAR THE
PATH OF THIS LINE OF STRONG THUNDERSTORMS.
RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THESE STORMS BECOME
STRONGER...THEN A WARNING MAY BE NEEDED.
LAT...LON 4041 8353 4023 8354 4022 8349 4001 8351
3977 8359 3977 8365 3955 8367 3960 8435
4033 8415
HATZOSSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
337 PM EDT WED SEP 22 2010
INZ073>075-080-KYZ089>096-OHZ070>072-077-078-222030-
DEARBORN IN-RIPLEY IN-OHIO IN-SWITZERLAND IN-GRANT KY-BOONE KY-
CAMPBELL KY-KENTON KY-PENDLETON KY-GALLATIN KY-CARROLL KY-OWEN KY-
CLERMONT OH-HAMILTON OH-CLINTON OH-BUTLER OH-WARREN OH-
337 PM EDT WED SEP 22 2010
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WARREN...BUTLER...
CLINTON...HAMILTON...NORTHERN CLERMONT...NORTHERN OWEN...CARROLL...
GALLATIN...NORTHWESTERN PENDLETON...KENTON...CAMPBELL...BOONE...
GRANT...SWITZERLAND...OHIO...SOUTHEASTERN RIPLEY AND SOUTHERN
DEARBORN COUNTIES THROUGH 430 PM EDT...
AT 334 PM EDT...RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE
EXTENDING FROM POAST TOWN HEIGHTS TO BRIGHT TO 12 MILES SOUTHWEST OF
LOCUST...MOVING EAST AT 40 MPH.
WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...HAMILTON...TRENTON...
CLEVES...CARLISLE...FAIRFIELD...SOUTH MIDDLETOWN...MIDDLETOWN...
FRANKLIN...FOREST PARK...CARROLLTON...RISING SUN AND SPRINGBORO.
ALSO...MOOREFIELD...HARTFORD...PETERSBURG...FAIRVIEW...GRANDVIEW...
LOCUST...PATE AND FRENCH ARE NEAR THE PATH OF THIS LINE OF STRONG
THUNDERSTORMS.
RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THESE STORMS BECOME
STRONGER...THEN A WARNING MAY BE NEEDED.
LAT...LON 3875 8527 3871 8521 3891 8522 3957 8454
3959 8426 3954 8360 3924 8390 3924 8398
3915 8399 3856 8465 3855 8502 3860 8509
3860 8523 3874 8534SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
415 PM EDT WED SEP 22 2010
OHZ062-063-072-078>080-222100-
CLERMONT OH-HIGHLAND OH-BROWN OH-CLINTON OH-FAYETTE OH-GREENE OH-
415 PM EDT WED SEP 22 2010
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN GREENE...SOUTHERN
FAYETTE...CLINTON...NORTHERN BROWN...HIGHLAND AND NORTHERN CLERMONT
COUNTIES THROUGH 500 PM EDT...
AT 412 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR
WILMINGTON...MOVING SOUTHEAST AT 40 MPH.
WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...NEW VIENNA...
HILLSBORO...BELFAST...SABINA...LEESBURG AND WASHINGTON COURT HOUSE.
ALSO...PAINTERSVILLE...NEW ANTIOCH...PORT WILLIAM...MELVIN...
BERRYSVILLE...BOWERSVILLE...BLOOMINGTON AND REESVILLE ARE NEAR THE
PATH OF THIS STRONG THUNDERSTORM.
RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THIS STORM BECOMES
STRONGER...THEN A WARNING MAY BE NEEDED.
LAT...LON 3959 8335 3903 8352 3911 8429 3924 8400
3937 8391 3964 8386
HATZOSThe Cincinnati radar (KILN), 91 km away, was scanning. The volume nearest the first event began at 20:28 UTC.
7 thunderstorm wind, 1 tornado. Local standard time, as filed.
Large branches were broken due to damaging thunderstorm winds.
Large tree branches and a tree were reported down due to damaging thunderstorm winds.
Large branches were reported down due to damaging thunderstorm winds.
Trees were reported down due to damaging thunderstorm winds.
Power poles were blown over due to damaging thunderstorm winds.
A Columbus metro traffic camera at the intersection of Interstate 270 and Broad Street recorded a very brief tornado touchdown just north of this location. No reports of damage were received in the immediate area, but the video footage does show a brief tornadic circulation in contact with the ground. Winds with this tornado are estimated to be around 65 miles per hour.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2010Every state in 2010This day in weather historyThe tornado archive for Ohio, 2010Warnings in Ohio, September 2010
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: 256257, 256264, 256268, 256261, 256265, 256260, 256274, 256259.