A large cluster of powerful thunderstorms, known as a "mesoscale convective system," plowed through southern Indiana and parts of central Kentucky during the morning and early afternoon hours of April 9, 2011.  Hail and wind damage reprts were widespread.

Below is a map that shows the severe weather reports we received on April 9, along with the warnings that were issued by the National Weather Service office in Louisville.  On the map, the purple and white icons are hail reports and the icons with the picture of the tree represent wind damage.  The yellow boxes are Severe Thunderstorm Warnings and the red box is a Tornado Warning.

Especially strong winds, thanks to a "wet microburst," caused damage from northeast Crawford County to southeast Orange County and southwest Washington County, Indiana.  Wind speeds were estimated to have reached 100 mph! The following photos were taken by a National Weather Service Survey Team.  Click on an image to see a larger version.

Marengo, in Crawford County

Marengo Marengo Marengo Marengo
Marengo Marengo Marengo Marengo
Marengo Marengo Marengo Marengo
marengo Marengo Marengo Marengo

 

Rural Crawford County

Crawford County Crawford County Crawford County Crawford County
Crawford County Crawford County Crawford County  

 

Orange County

Orange County Orange County

 

Washington County, Indiana

Washington County IN Washington County IN Washington County IN Washington County IN
Washington County IN Washington County IN Washington County IN Washington County IN
Washington County IN Washington County IN Washington County IN Washington County IN

 

Here is a text listing of most of the reports shown above:

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

1005 AM HAIL IRELAND 38.42N 87.00W
04/09/2011 M1.00 INCH DUBOIS IN AMATEUR RADIO

1030 AM TSTM WND DMG MARENGO 38.37N 86.34W
04/09/2011 CRAWFORD IN EMERGENCY MNGR

SOME TREES DOWN

1037 AM HAIL CAREFREE 38.24N 86.36W
04/09/2011 M0.70 INCH CRAWFORD IN AMATEUR RADIO

1037 AM TSTM WND DMG MARENGO 38.37N 86.34W
04/09/2011 CRAWFORD IN NWS EMPLOYEE

WET MICROBURST WITH ESTIMATED 95 MPH WINDS FROM MARENGO
TO THREE MILES NORTHEAST OF MARENGO

1100 AM TSTM WND DMG NEW PEKIN 38.50N 86.02W
04/09/2011 WASHINGTON IN TRAINED SPOTTER

TREES REPORTED DOWN.

1103 AM TSTM WND DMG MARENGO 38.37N 86.34W
04/09/2011 CRAWFORD IN EMERGENCY MNGR

NUMEROUS TREES AND POWER LINES DOWN ACROSS THE AREA.

1106 AM HAIL LOUISVILLE 38.22N 85.74W
04/09/2011 M0.50 INCH JEFFERSON KY TRAINED SPOTTER

REPORTED ALONG DIXIE HIGHWAY.

1107 AM HAIL FLOYDS KNOBS 38.32N 85.87W
04/09/2011 M0.50 INCH FLOYD IN TRAINED SPOTTER

1107 AM HAIL 3 SSE LOUISVILLE 38.19N 85.65W
04/09/2011 M1.00 INCH JEFFERSON KY PUBLIC

HAIL FELL BETWEEN 1107 AND 1122 AM

1107 AM TSTM WND DMG 1 N NEW ALBANY 38.32N 85.83W
04/09/2011 FLOYD IN TRAINED SPOTTER

DOWNED TREES BLOCKING GRAYBROOK LANE

1108 AM HAIL LOUISVILLE 38.22N 85.74W
04/09/2011 M0.70 INCH JEFFERSON KY TRAINED SPOTTER

REPORTED AT CHURCHILL DOWNS.

1109 AM HAIL 3 SW SELLERSBURG 38.36N 85.80W
04/09/2011 M0.75 INCH FLOYD IN COCORAHS

1111 AM HAIL SELLERSBURG 38.39N 85.76W
04/09/2011 M0.88 INCH CLARK IN TRAINED SPOTTER

1112 AM HAIL 2 N OKOLONA 38.17N 85.69W
04/09/2011 M1.00 INCH JEFFERSON KY PUBLIC

1115 AM TSTM WND DMG LOUISVILLE 38.22N 85.74W
04/09/2011 JEFFERSON KY EMERGENCY MNGR

LARGE POLE DOWN HIKES POINT.

1117 AM TSTM WND DMG 1 NW PEWEE VALLEY 38.32N 85.50W
04/09/2011 OLDHAM KY NWS EMPLOYEE

LARGE TREE BLOCKING ROLLINGTON RD AS WELL AS POWER
LINES DOWN

1119 AM HAIL LOUISVILLE 38.22N 85.74W
04/09/2011 M0.75 INCH JEFFERSON KY TRAINED SPOTTER

JEFFERSONTOWN

1119 AM TSTM WND DMG LOUISVILLE 38.22N 85.74W
04/09/2011 JEFFERSON KY TRAINED SPOTTER

TRESS DOWN ALONG DIXIE HIGHWAY.

1120 AM HAIL JEFFERSONTOWN 38.21N 85.57W
04/09/2011 M0.50 INCH JEFFERSON KY TRAINED SPOTTER

1122 AM HAIL FERN CREEK 38.16N 85.60W
04/09/2011 M0.50 INCH JEFFERSON KY TRAINED SPOTTER

1122 AM TSTM WND DMG LOUISVILLE 38.22N 85.74W
04/09/2011 JEFFERSON KY TRAINED SPOTTER

BUILDING DAMAGE AT BLANKENBAKER AND ELECTRON DRIVE

1123 AM HAIL LOUISVILLE 38.22N 85.74W
04/09/2011 M0.50 INCH JEFFERSON KY TRAINED SPOTTER

SOUTHWEST JEFFERSON COUNTY.

1124 AM TSTM WND DMG LOUISVILLE 38.22N 85.74W
04/09/2011 JEFFERSON KY LAW ENFORCEMENT

NUMEROUS POWER LINES DOWN ACROSS THE CITY.

1126 AM HAIL JEFFERSONTOWN 38.21N 85.57W
04/09/2011 M0.70 INCH JEFFERSON KY TRAINED SPOTTER

1127 AM HAIL FINCHVILLE 38.15N 85.32W
04/09/2011 M0.70 INCH SHELBY KY TRAINED SPOTTER

1127 AM HAIL JEFFERSONTOWN 38.21N 85.57W
04/09/2011 M1.00 INCH JEFFERSON KY TRAINED SPOTTER

1129 AM TSTM WND DMG NEW ALBANY 38.30N 85.83W
04/09/2011 FLOYD IN TRAINED SPOTTER

NUMEROUS TREES DOWN ACROSS THE COUNTY.

1130 AM HAIL PROSPECT 38.35N 85.61W
04/09/2011 M0.50 INCH JEFFERSON KY TRAINED SPOTTER

1138 AM TSTM WND DMG LOUISVILLE 38.22N 85.74W
04/09/2011 JEFFERSON KY TRAINED SPOTTER

TREE REPORTED DOWN ON A HOUSE.

1140 AM TSTM WND DMG LA GRANGE 38.40N 85.38W
04/09/2011 OLDHAM KY TRAINED SPOTTER

TREES REPORTED DOWN JUST NORTH OF THE CITY.

1140 AM TSTM WND DMG BEDFORD 38.59N 85.32W
04/09/2011 TRIMBLE KY LAW ENFORCEMENT

TREES AND POWER LINES DOWN.

1141 AM HAIL SHELBYVILLE 38.22N 85.23W
04/09/2011 M0.50 INCH SHELBY KY TRAINED SPOTTER

1141 AM TSTM WND DMG SHELBYVILLE 38.22N 85.23W
04/09/2011 SHELBY KY EMERGENCY MNGR

SOME TREES DOWN ACROSS THE COUNTY.

1143 AM TSTM WND DMG SULPHUR 38.48N 85.27W
04/09/2011 HENRY KY LAW ENFORCEMENT

TREE AND POWER LINES DOW IN SULPHUR.

1147 AM HAIL SHELBYVILLE 38.22N 85.23W
04/09/2011 M0.88 INCH SHELBY KY TRAINED SPOTTER

1154 AM HAIL LAWRENCEBURG 38.03N 84.89W
04/09/2011 M0.50 INCH ANDERSON KY TRAINED SPOTTER

1156 AM HAIL LAWRENCEBURG 38.03N 84.89W
04/09/2011 M1.00 INCH ANDERSON KY TRAINED SPOTTER

1203 PM HAIL CYNTHIANA 38.39N 84.30W
04/09/2011 M0.50 INCH HARRISON KY TRAINED SPOTTER

1247 PM TSTM WND DMG CARLISLE 38.31N 84.04W
04/09/2011 NICHOLAS KY EMERGENCY MNGR

SHOP BUILDING ROOF BLOWN OFF ALSO TREE TOP BLOWN DOWN.

1249 PM TSTM WND DMG NICHOLASVILLE 37.88N 84.58W
04/09/2011 JESSAMINE KY TRAINED SPOTTER

TREES DOWN.

0108 PM TSTM WND DMG BALLTOWN 37.73N 85.50W
04/09/2011 NELSON KY TRAINED SPOTTER

TREE LIMBS AND POLES DOWN.

0115 PM HAIL 4 W CAMPBELLSVILLE 37.35N 85.42W
04/09/2011 M1.00 INCH TAYLOR KY TRAINED SPOTTER

0120 PM TSTM WND DMG 3 E WINCHESTER 38.00N 84.13W
04/09/2011 CLARK KY TRAINED SPOTTER

TREES REPORTED DOWN.

0130 PM HAIL SPRINGFIELD 37.69N 85.22W
04/09/2011 M0.50 INCH WASHINGTON KY LAW ENFORCEMENT

0140 PM TSTM WND DMG 3 S STANFORD 37.49N 84.66W
04/09/2011 LINCOLN KY TRAINED SPOTTER

SOME POWER LINES DOWN.

0140 PM HAIL LIBERTY 37.32N 84.93W
04/09/2011 E0.75 INCH CASEY KY TRAINED SPOTTER

0142 PM HAIL LIBERTY 37.32N 84.93W
04/09/2011 M1.00 INCH CASEY KY TRAINED SPOTTER

0145 PM HAIL 2 E LIBERTY 37.32N 84.89W
04/09/2011 M0.75 INCH CASEY KY PUBLIC

0147 PM HAIL STANFORD 37.53N 84.66W
04/09/2011 M0.50 INCH LINCOLN KY LAW ENFORCEMENT

0147 PM TSTM WND DMG LANCASTER 37.62N 84.58W
04/09/2011 GARRARD KY LAW ENFORCEMENT

TRESS DOWN JUST SOUTH OF THE CITY ALONG WITH POWER
LINES.

0150 PM TSTM WND DMG 3 S LIBERTY 37.27N 84.93W
04/09/2011 CASEY KY TRAINED SPOTTER

TREES DOWN.

0157 PM HAIL WACO 37.73N 84.15W
04/09/2011 M0.70 INCH MADISON KY TRAINED SPOTTER

0203 PM HAIL BEREA 37.58N 84.29W
04/09/2011 M1.00 INCH MADISON KY TRAINED SPOTTER

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