Tornadoes · United States · Ohio · 2011

EF1 tornado, Villa, Ohio, May 23, 2011

Name: EF1 tornado, Villa, Ohio, May 23, 2011
Start: 2011-05-24T00:10:00.000Z
End: 2011-05-24T00:11:00.000Z
Location: Villa, Ohio

This EF1 tornado ran 0.4 miles across Clark County on May 23, 2011, touching down at 8:10 PM EDT and reaching 100 yards wide. It killed nobody, and did $15,000 of property damage.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

EF065 to 85 mph
Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.
EF186 to 110 mphthis tornado
Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.
EF2111 to 135 mph
Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.
EF3136 to 165 mph
Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.
EF4166 to 200 mph
Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.
EF5over 200 mph
Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.
Unrated
The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

The record

Rating: EF1
Date: May 23, 2011
Touchdown: 8:10 PM EDT (00:10 UTC)
Lifted: 8:11 PM EDT (00:11 UTC)
On the ground: 1 minutes
Path length: 0.4 miles (0.6 km)
Path width: 100 yards (91 m)
Deaths: 0
Injuries: 0
Property damage: $15,000
Crop damage: $3,000
County: Clark County
Touchdown point: 39.991, -83.762
Lift-off point: 39.995, -83.756
Record number: 1105231810-01

What the Weather Service recorded

A quasi-linear convective system moved across an unstable airmass and produced widespread severe weather.

Concrete blocks were lifted onto a roof, convergence was noted in a wheat field south of a farm house, four power poles were knocked down, and one house had insulation pulled out of it due to the tornado. The maximum estimated wind speeds based on damage was around 90 miles per hour.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

14 minutes of warning. NWS ILN issued a tornado warning for this county at 23:56 UTC, 14 minutes before the tornado touched down, in force until 00:30 UTC.

The county was under a severe thunderstorm watch, issued at 20:28 UTC and running to 01:52 UTC.

Issued (UTC)	Expired	Product	Office
20:28 UTC	01:52 UTC	Severe Thunderstorm Watch	ILN
23:16 UTC	00:15 UTC	Severe Thunderstorm Warning	ILN
23:56 UTC	00:30 UTC	Tornado Warning	ILN
00:02 UTC	00:18 UTC	Tornado Warning	ILN
00:07 UTC	00:30 UTC	Severe Thunderstorm Warning	ILN

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The forecast that day

The Storm Prediction Center had this point in a Slight Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 19:39 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

What forecasters said that day

The local office's own words before the tornado touched down, 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 tornado touched down at May 23, 5:50 PM EDT, 2 hours 20 minutes earlier.

Area forecast discussion, May 23, 5:50 PM EDT, 2 hours 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
550 PM EDT MON MAY 23 2011

.SYNOPSIS...
SHOWERS AND THUNDERSTORMS WILL OCCUR THIS EVENING DUE TO A WARM
AND UNSTABLE AIRMASS. A FRONTAL BOUNDARY WILL APPROACH THE AREA
TONIGHT AND REMAIN ACROSS THE AREA FOR MOST OF THE WEEK. THIS WILL
KEEP PRECIPITATION CHANCES IN THE FORECAST THROUGH THE WEEK.

&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
TWO MAIN AREAS OF SHOWERS AND THUNDERSTORMS HAVE DEVELOPED WEST OF
THE AREA. ONE SLOWER MOVING AREA OF SCATTERED THUNDERSTORMS IS
OVER NORTHERN INDIANA AND ANOTHER AREA MOVING INTO WESTERN
PORTIONS OF INDIANA. BOTH AREAS OF STORMS WILL MOVE THROUGH DURING
THE EVENING HOURS AND THEREFORE A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR THIS EVENING. THE MAIN THREATS FROM THESE STORMS WILL
BE DAMAGING WIND AND LARGE HAIL. FLOODING WILL ALSO BE A CONCERN
WITH THESE STORMS DUE TO HEAVY RAIN THAT OCCURRED YESTERDAY AND
DURING THE OVERNIGHT HOURS. THE SEVERE THREAT WILL MOVE OUT OF THE
AREA BY AROUND MIDNIGHT ALTHOUGH SOME PRECIPITATION WILL LINGER
ACROSS THE AREA.

&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH TUESDAY NIGHT/...
FRONTAL BOUNDARY WILL LAY OUT ACROSS THE AREA ON TUESDAY WITH A
SHORT WAVE MOVING THROUGH DURING THE DAY. DUE TO THIS HAVE
INCREASED PRECIPITATION CHANCES TO 100 PERCENT FOR TUESDAY.
PRECIP CHANCES WILL DECREASE AS THIS FEATURE MOVES TO THE EAST
HOWEVER WITH FRONTAL BOUNDARY IN THE VICINITY WILL KEEP
PRECIPITATION IN THE FORECAST OVERNIGHT TUESDAY NIGHT. TEMPERATURES
WILL BE COOLER ACROSS THE NORTH ON TUESDAY AND WARMER ACROSS THE
SOUTH DUE TO BOUNDARY POSITION. WITH EXTENSIVE CLOUD COVER ACROSS
THE AREA TEMPERATURES TUESDAY NIGHT WILL ONLY DROP INTO THE MID
50S TO THE MID 60S.

&&

.LONG TERM /WEDNESDAY THROUGH MONDAY/...
WARM FRONT WILL LIFT ACROSS THE REGION ON WEDNESDAY WITH SHOWERS AND
THUNDERSTORMS LIKELY ALONG AND AHEAD OF THE BOUNDARY WITH ONLY
SCATTERED STORMS IN THE WARM SECTOR. HOWEVER PRECIPITATION COVERAGE
WILL INCREASE SUBSTANTIALLY LATE WEDNESDAY NIGHT AND CONTINUE INTO
FRIDAY. THIS IN RESPONSE TO A CLOSED UPPER LOW IN THE MID
MISSISSIPPI VALLEY OPENING UP AND SLOWLY LIFTING ACROSS THE REGION.
AN ASSOCIATED SURFACE LOW AND COLD FRONT WILL MOVE THROUGH ON
FRIDAY. SUBSIDENCE IN THE WAKE OF THIS SYSTEM SHOULD BRING A LULL IN
PRECIPITATION FRIDAY NIGHT. BUT NEXT SHORT WAVE WILL BE APPROACHING
THE GREAT LAKES ON SATURDAY.

ALTHOUGH MODELS HAVE SHIFTED AWAY FROM THE FORECAST OF ANOTHER
CLOSED LOW DEVELOPING...IT STILL APPEARS TO BE UNSETTLED ACROSS THE
FORECAST AREA THROUGH THE HOLIDAY WEEKEND AS NUMEROUS SHORT WAVES
MOVE THROUGH THE GREAT LAKES IN FAST FLOW. THIS PATTERN WILL KEEP A
CHANCE OF SHOWERS AND THUNDERSTORMS IN FOR EACH DAY. BUT
TEMPERATURES SHOULD BE CLOSE TO OR EVEN SLIGHTLY ABOVE NORMAL AS
OPPOSED TO THE PREVIOUS COOL SOLUTION.

&&

.AVIATION /22Z MONDAY THROUGH SATURDAY/...
SQUALL LINE PROGRESSING QUICKLY EAST ACROSS SOUTHERN INDIANA LATE
THIS AFTERNOON. CURRENT TIMING HAS THIS TO THE WESTERN TAF SITES
AROUND 23Z. AIRMASS AHEAD OF THIS IS MODERATELY UNSTABLE SO
EXPECT IT TO PUSH ACROSS OUR ENTIRE AREA THROUGH EARLY EVENING.
WIND GUST TO AROUND 50 KNOTS WILL BE POSSIBLE WITH THE SQUALL LINE
AS IT MOVES THROUGH. SOME SHORT WAVE ENERGY PUSHING DOWN ACROSS
NORTHERN INDIANA AND NORTHERN OHIO COULD ALLOW ACTIVITY TO LINGER A
LITTLE LONGER AT KCMH/KLCK. ONCE PCPN MOVES THROUGH LATER THIS
EVENING...EXPECT A BREAK IN PCPN THROUGH THE OVERNIGHT HOURS INTO
TUESDAY MORNING. A BOUNDARY WILL REMAIN DRAPED ACROSS THE AREA
THROUGH THE DAY ON TUESDAY AND AS WE DESTABILIZE THROUGH THE
AFTERNOON...SHOWERS AND THUNDERSTORMS SHOULD REDEVELOP THROUGH THE
LATER PART OF THE TAF PERIOD.

OUTLOOK...THUNDERSTORMS POSSIBLE THROUGH THURSDAY.

&&

.ILN WATCHES/WARNINGS/ADVISORIES...
OH...NONE.
KY...NONE.
IN...NONE.

&&

SYNOPSIS...NOVAK
NEAR TERM...NOVAK
SHORT TERM...NOVAK
LONG TERM...
AVIATION...JGL

Hazardous weather outlook, May 23, 5:48 PM EDT, 2 hours 22 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WILMINGTON OH
548 PM EDT MON MAY 23 2011

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046-
051>056-060>065-070>074-077>082-088-242200-
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-
548 PM EDT MON MAY 23 2011

...SEVERE THUNDERSTORM WATCH 346 IN EFFECT UNTIL MIDNIGHT EDT
TONIGHT...

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...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

THUNDERSTORMS WILL MOVE ACROSS THE AREA THIS EVENING. SOME OF THESE
STORMS WILL BE SEVERE WITH DAMAGING WINDS AND LARGE HAIL BEING
THE MAIN THREATS. AN ISOLATED TORNADO WILL ALSO BE POSSIBLE.
FLOODING WILL ALSO BE A CONCERN DUE TO ALREADY SATURATED GROUND.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

A FRONT WILL STALL OUT ACROSS THE REGION THIS WEEK WITH PERIODS
OF THUNDERSTORMS EXPECTED TUESDAY THROUGH FRIDAY. SEVERAL ROUNDS
OF SEVERE WEATHER WILL BE POSSIBLE TUESDAY AFTERNOON ACROSS SOUTHERN
OHIO AND NORTHERN KENTUCKY AND THEN THE ENTIRE REGION ON WEDNESDAY.

DUE TO THE REPEATED PERIODS OF THUNDERSTORMS WHICH MAY OCCUR THIS
WEEK THERE IS ALSO A POTENTIAL FOR FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD ACTIVATE AND REPORT SIGNIFICANT WEATHER CONDITIONS.

In the hours before

Local storm report, May 23, 7:42 PM EDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
742 PM EDT MON MAY 23 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0738 PM     TSTM WND GST     FORT MCKINLEY           39.81N 84.26W
05/23/2011  E65 MPH          MONTGOMERY         OH   TRAINED SPOTTER

            WIND GUSTS OF 60 TO 70 MPH

&&

Local storm report, May 23, 7:50 PM EDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
750 PM EDT MON MAY 23 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0720 PM     TSTM WND GST     HAMILTON                39.39N 84.56W
05/23/2011  M0 MPH           BUTLER             OH   ASOS

&&

HUGHES

Local storm report, May 23, 7:55 PM EDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
755 PM EDT MON MAY 23 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0708 PM     NON-TSTM WND DMG 5 S COLDWATER           40.41N 84.63W
05/23/2011                   MERCER             OH   EMERGENCY MNGR

            5 POWER POLES DOWN JUST SOUTH OF ST HENRY

&&

Local storm report, May 23, 7:57 PM EDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
757 PM EDT MON MAY 23 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0746 PM     TSTM WND GST     3 W FAIRBORN            39.80N 84.07W
05/23/2011  M50 MPH          GREENE             OH   AMATEUR RADIO

&&

ANOVAK

Local storm report, May 23, 8:00 PM EDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
800 PM EDT MON MAY 23 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0710 PM     TSTM WND DMG     DELHI TOWNSHIP          39.10N 84.61W
05/23/2011                   HAMILTON           OH   AMATEUR RADIO

            LARGE TREE LIMBS SNAPPED.

&&

ANOVAK

Local storm report, May 23, 8:04 PM EDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
804 PM EDT MON MAY 23 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0802 PM     NON-TSTM WND GST PIQUA                   40.15N 84.25W
05/23/2011  E70 MPH          MIAMI              OH   AMATEUR RADIO

&&

ANOVAK

The air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Cncnati-Daytn, OH (KILN), 00:00Z

0.2 hours before the tornado, 63 km from the path. May 24, 2011.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.

Mixed-layer CAPE: 729 J/kg
Mixed-layer CIN: -44 J/kg
Surface CAPE: 1714 J/kg
Mixed-layer LCL: 1494 m above ground
0-6 km bulk shear: 29 kt
0-1 km bulk shear: 23 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 215 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 5.2
0-3 km lapse rate: 7.3 K/km

Open this sounding in Storm Lab

Cncnati-Daytn, OH (KILN), 12:00Z

11.8 hours after it, 63 km from the path. May 24, 2011.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.

Hodograph

Mixed-layer CAPE: 6 J/kg
Mixed-layer CIN: -257 J/kg
Surface CAPE: 44 J/kg
Mixed-layer LCL: 841 m above ground
0-6 km bulk shear: 36 kt
0-1 km bulk shear: 15 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0
0-3 km lapse rate: 4.7 K/km

Open this sounding in Storm Lab

The radar

The Cincinnati radar (KILN), 64 km away, was scanning. The volume nearest the touchdown began at 00:11 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)	Report	Where	County	Remark
23:11 UTC	TSTM WND DMG	New Moorefield	Clark, OH	TWENTY POLES SNAPPED/MINOR DAMAGE TO HOUSE/MINOR DAMAGE TO APARTMENTS/BARN BLOWN OFF FOUNDATION
23:28 UTC	TSTM WND GST 63	Ki23 Washington Ch Apt	Fayette, OH
23:37 UTC	TSTM WND DMG	2 Nw Dayton	Montgomery, OH	TREE DOWN ACROSS ROAD.
23:37 UTC	TSTM WND DMG	2 Se Englewood	Montgomery, OH	NUMEROUS TREES DOWNED IN PARTS OF ENGLEWOOD AND CLAYTON.
23:38 UTC	TSTM WND DMG	West Milton	Miami, OH	PANELS WERE RIPPED OFF A BARN.
23:38 UTC	TSTM WND GST 65	Fort Mckinley	Montgomery, OH	WIND GUSTS OF 60 TO 70 MPH
23:41 UTC	TSTM WND DMG	2 Nne Pleasant Hill	Miami, OH	NUMEROUS TREES DOWN AND DAMAGE TO A DAIRY FARM ALONG RENCH ROAD. EXAMINATION FROM LAW ENFORCEMENT...IN COLLABORATION WITH NATIONAL WEATHER SERVICE METEOROLOGISTS...INDICATED THAT DAMAGE AT THIS LOCATION WAS CAUSED BY STR
23:41 UTC	TORNADO	2 Nne Pleasant Hill	Miami, OH	NUMEROUS TREES DOWN AND DAMAGE TO A DAIRY FARM ALONG RENCH ROAD. POSSIBLE TORNADO REPORTED IN AREA OF DAMAGE.
23:42 UTC	TSTM WND DMG	Riverside	Montgomery, OH	SEVERAL TREES DOWNED
23:44 UTC	TSTM WND DMG	3 W Beavercreek	Montgomery, OH	SVRL TREES DOWN, 1 UPROOTED, APPROX 5 TREES TOPPED OFF AROUND 20 FT UP
23:46 UTC	TSTM WND DMG	Beavercreek	Greene, OH	PART OF A ROOF BLOWN OFF OF A RESTAURANT.
23:46 UTC	TSTM WND DMG	Tipp City	Miami, OH	TREE DOWNED ON A CAR.
23:46 UTC	TSTM WND DMG	W Beavercreek	Greene, OH	MULTIPLE TREES SNAPPED OR UPROOTED. ONE TREE FELL ONTO A HOUSE AND ANOTHER TREE FELL ONTO POWERLINES.
23:46 UTC	TSTM WND GST 50	3 W Fairborn	Greene, OH
23:50 UTC	TSTM WND DMG	2 Ne Anna	Shelby, OH	TREE UPROOTED.
23:50 UTC	TSTM WND GST 77	Anna	Shelby, OH	HONDA PLANT
23:54 UTC	TSTM WND DMG	1 Ene Xenia	Greene, OH	A TREE WAS DOWNED ON EAST MARKET STREET.
23:54 UTC	TSTM WND DMG	Sidney	Shelby, OH	TREE DOWNED/POWER POLES LEANING
23:55 UTC	TORNADO 1	3 E Fairborn	Greene, OH	NUMEROUS TREES SNAPPED AND UPROOTED. EF1 TORNADO WITH WIND SPEEDS APPROXIMATELY 90 MPH.
23:56 UTC	TSTM WND DMG	2 Se Fairborn	Greene, OH	MULTIPLE TREES DOWNED ALONG DAYTON YELLOW SPRINGS ROAD NEAR THE GREENE COUNTRY CLUB.
23:56 UTC	TSTM WND DMG	Enon	Clark, OH	TREES DOWNED.
23:58 UTC	TSTM WND DMG	3 N New Carlisle	Clark, OH	ROOF DAMAGE TO CHICKEN HOUSE
23:59 UTC	TSTM WND DMG	Maplewood	Shelby, OH	FENCE BLOWN DOWN.
00:02 UTC	TSTM WND DMG	Dayton	Montgomery, OH	LG TREE UPROOTED WIND GUST E60 MPH
00:02 UTC	TSTM WND GST 0	Piqua	Miami, OH
00:02 UTC	TSTM WND GST 70	Piqua	Miami, OH
00:02 UTC	NON-TSTM WND GST 70	Piqua	Miami, OH
00:04 UTC	TSTM WND DMG	Quincy	Logan, OH	TREE DOWNED.
00:07 UTC	TSTM WND GST 60	Lewistown	Logan, OH
00:10 UTC	TSTM WND GST 58	Kedj Bellefontaine Apt	Logan, OH
00:10 UTC	TORNADO 1	5 Nne Springfield	Clark, OH	EF1 TORNADO CONFIRMED NNE OF SPRINGFIELD OHIO. POWER POLES DOWNED AND HOME DAMAGE REPORTED.
00:11 UTC	TSTM WND DMG	New Moorefield	Clark, OH	TWENTY POLES SNAPPED/MINOR DAMAGE TO HOUSE/MINOR DAMAGE TO APARTMENTS/BARN BLOWN OFF FOUNDATION. CORRECTED TIME OF EVENT.
00:15 UTC	TSTM WND DMG	6 Nne Springfield	Clark, OH	SVRL UTILITY POLES DOWN NR BOSART RD AND SR 4
00:15 UTC	HAIL 0.5	Urbana	Champaign, OH
00:28 UTC	TSTM WND GST 63	Ki23 Washington Ch Apt	Fayette, OH	CORRECTED TIME OF EVENT.
00:36 UTC	TSTM WND DMG	Unionville Center	Union, OH	TREE DOWNED.
00:39 UTC	TSTM WND DMG	4 W Hilliard	Franklin, OH	A LARGE TRAILER WAS BLOWN OVER.
00:39 UTC	HAIL 0.5	5 S Marysville	Union, OH
00:40 UTC	TSTM WND DMG	4 E Marysville	Union, OH	BARN UNDER CONSTRUCTION HAD POSTS KNOCKED OUT OF THE GROUND ON HINTON-MILL RD
00:43 UTC	TSTM WND GST 60	Kmrt Marysville Apt	Union, OH

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the track Every 2011 tornado in Ohio Every tornado in Ohio since 1950 Warnings in force in Ohio now The forecast where you are

The other tornadoes of May 23, 2011

17 more were confirmed in the United States that day.

Date	Time	Rating	Where	Path (mi)	Width (yd)	Injuries	Damage
May 23	1:45 PM CDT	EF0	Howell, MO	1.0	100		$10,000
May 23	3:54 PM CDT	EF0	Cape Girardeau, MO	0.5	40		$1,000
May 23	5:23 PM EDT	EF2	Juniata, PA	4.7	250		$50,000
May 23	4:26 PM CDT	EF0	Blaine, OK	0.3	15
May 23	5:32 PM EDT	EF0	Huntington, IN	0.4	30
May 23	5:39 PM EDT	EF1	Northumberland, PA	1.2	100		$50,000
May 23	6:15 PM EDT	EF0	Luce, MI	2.4	50
May 23	5:25 PM CDT	EF1	Gallatin, IL	11.8	200		$250,000
May 23	6:37 PM EDT	EF1	Schuylkill, PA	0.2	75		$20,000
May 23	6:43 PM EDT	EF0	Dearborn, IN	3.1	50		$45,000
May 23	5:52 PM CDT	EF0	Osage, OK	0.1	50
May 23	6:56 PM EDT	EF1	Van Wert, OH	4.1	100
May 23	7:25 PM EDT	EF0	Carbon, PA	0.4	50	1	$75,000
May 23	7:43 PM EDT	EF0	Clermont, OH	0.2	33		$30,000
May 23	6:52 PM CDT	EF2	Stewart, TN	13.3	150	2	$250,000
May 23	7:55 PM EDT	EF1	Greene, OH	0.9	100		$3,000
May 23	7:10 PM CDT	EF2	Christian, KY	17.3	175	1	$350,000

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.