An area of low pressure moved along a warm front during the afternoon of May 1. The low and front interacted with warm and unstable air to produce numerous thunderstorms across central Indiana. One storm produced a couple of tornadoes, and another produced a brief tornado. Other storms produced large hail and damaging winds.

Hail in BARTHOLOMEW, INDIANA
From 01-MAY-12 14:50:00 to 01-MAY-12 14:52:00 (EST-5)
Location: RIVERVIEW ACRES
Magnitude: 1.00 
Reported by: Trained Spotter

Quarter sized hail was observed in northwest Columbus on Lowell Road, just west of Highway 31.

Thunderstorm Wind in JOHNSON, INDIANA
From 01-MAY-12 14:53:00 to 01-MAY-12 14:53:00 (EST-5)
Location: SMITH VALLEY
Magnitude: 51.00 MG
Reported by: Trained Spotter

A measured 59 mph thunderstorm wind gust was observed in this location.

Hail in DECATUR, INDIANA
From 01-MAY-12 15:23:00 to 01-MAY-12 15:25:00 (EST-5)
Location: MILFORD
Magnitude: 1.00 
Reported by: Amateur Radio

Thunderstorm Wind in DECATUR, INDIANA
From 01-MAY-12 15:23:00 to 01-MAY-12 15:23:00 (EST-5)
Location: MILFORD
Magnitude: 68.00 EG
Reported by: Amateur Radio

An estimated 78 mph thunderstorm wind gust was observed in Milford.

Thunderstorm Wind in DECATUR, INDIANA
From 01-MAY-12 15:27:00 to 01-MAY-12 15:27:00 (EST-5)
Location: GREENSBURG
Magnitude: 61.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A semi trailer was blown over due to damaging thunderstorm wind gusts.

Thunderstorm Wind in HENRY, INDIANA
From 01-MAY-12 15:49:00 to 01-MAY-12 15:49:00 (EST-5)
Location: SULPHUR SPGS
Magnitude: 61.00 EG
Reported by: Public

An estimated 70 mph thunderstorm wind gust was observed in Sulphur Springs.

Thunderstorm Wind in HENRY, INDIANA
From 01-MAY-12 15:56:00 to 01-MAY-12 15:56:00 (EST-5)
Location: STRAUGHN
Magnitude: 50.00 EG
Reported by: Amateur Radio

An estimated 58 mph thunderstorm wind gust was observed in Straughn.

Hail in LAWRENCE, INDIANA
From 01-MAY-12 16:25:00 to 01-MAY-12 16:27:00 (EST-5)
Location: O OLITIC
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel sized hail was accompanied by 40 mph thunderstorm wind gusts.

Hail in JACKSON, INDIANA
From 01-MAY-12 17:02:00 to 01-MAY-12 17:04:00 (EST-5)
Location: CROTHERSVILLE
Magnitude: 1.00 
Reported by: Public

Hail in WARREN, INDIANA
From 01-MAY-12 17:31:00 to 01-MAY-12 17:33:00 (EST-5)
Location: FOSTER
Magnitude: 1.00 
Reported by: Emergency Manager

Hail in FOUNTAIN, INDIANA
From 01-MAY-12 17:41:00 to 01-MAY-12 17:43:00 (EST-5)
Location: COVINGTON
Magnitude: 1.00 
Reported by: Emergency Manager

Hail in FOUNTAIN, INDIANA
From 01-MAY-12 17:50:00 to 01-MAY-12 17:52:00 (EST-5)
Location: VEEDERSBURG
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Public

Hail in HENDRICKS, INDIANA
From 01-MAY-12 18:00:00 to 01-MAY-12 18:02:00 (EST-5)
Location: NORTH SALEM
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HENDRICKS, INDIANA
From 01-MAY-12 18:00:00 to 01-MAY-12 18:02:00 (EST-5)
Location: NORTH SALEM
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KNOX, INDIANA
From 01-MAY-12 18:03:00 to 01-MAY-12 18:05:00 (EST-5)
Location: MONROE CITY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in KNOX, INDIANA
From 01-MAY-12 18:07:00 to 01-MAY-12 18:09:00 (EST-5)
Location: MONROE CITY
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in OWEN, INDIANA
From 01-MAY-12 18:08:00 to 01-MAY-12 18:10:00 (EST-5)
Location: ADEL
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in KNOX, INDIANA
From 01-MAY-12 18:13:00 to 01-MAY-12 18:15:00 (EST-5)
Location: WHEATLAND
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in HENDRICKS, INDIANA
From 01-MAY-12 18:25:00 to 01-MAY-12 18:27:00 (EST-5)
Location: PLAINFIELD
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HENDRICKS, INDIANA
From 01-MAY-12 18:29:00 to 01-MAY-12 18:31:00 (EST-5)
Location: PLAINFIELD
Magnitude: 1.25 
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MONROE, INDIANA
From 01-MAY-12 19:04:00 to 01-MAY-12 19:06:00 (EST-5)
Location: UNIONVILLE
Magnitude: 1.50 
Reported by: Law Enforcement

Hail in BROWN, INDIANA
From 01-MAY-12 19:18:00 to 01-MAY-12 19:20:00 (EST-5)
Location: NASHVILLE
Magnitude: 1.50 
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in MORGAN, INDIANA
From 01-MAY-12 20:28:00 to 01-MAY-12 20:30:00 (EST-5)
Location: PARAGON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail in MORGAN, INDIANA
From 01-MAY-12 15:50:00 to 01-MAY-12 15:52:00 (EST-5)
Location: PARAGON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MONROE, INDIANA
From 01-MAY-12 14:00:00 to 01-MAY-12 14:00:00 (EST-5)
Location: ELLETTSVILLE
Magnitude: 56.00 EG
Property damage: 4.00K
Reported by: Law Enforcement

Isolated reports of trees being down in the Ellettsville area were due to damaging thunderstorm wind gusts.

Tornado in FOUNTAIN, INDIANA
From 01-MAY-12 17:57:00 to 01-MAY-12 17:58:00 (EST-5)
Location: STEAM CORNER
Tornado F-scale: EF0
Reported by: Amateur Radio

This tornado-producing storm formed in Illinois before traveling into central Indiana. The storm produced a tornado in central Indiana near the town of Yeddo in Fountain County. The EF-0 rated tornado touched down at 6:57 PM EDT and was on the ground briefly. The tornado's width was 50 yards and the path length was approximately one tenth of a mile.

Tornado in MONTGOMERY, INDIANA
From 01-MAY-12 18:36:00 to 01-MAY-12 18:37:00 (EST-5)
Location: LINNSBURG
Tornado F-scale: EF1
Property damage: 48.00K
Reported by: Amateur Radio

The same storm that produced the Yeddo tornado went on to produce this EF-1 tornado in Montgomery County, near the town of New Ross. The tornado touched down at 7:36 PM EDT and was on the ground for about a minute. Wind speeds for the tornado were 100-110 mph, and the width was 150 yards. The tornado was on the ground for about a half mile as it hit a house, destroyed a barn, and downed trees onto a house and two cars.

Tornado in CLAY, INDIANA
From 01-MAY-12 13:33:00 to 01-MAY-12 13:34:00 (EST-5)
Location: OLD HILL
Tornado F-scale: EF0
Property damage: 3.00K
Crop damage: 0.50K
Reported by: Emergency Manager

A small storm, with a weak radar signature, produced a brief tornado near Cory in Clay County. This EF-0 tornado had a path length of 0.1 mile and was 50 yards wide, touching down at 2:33 PM EDT. A few trees and some corn stalks were damaged from this tornado.

Thunderstorm Wind in BARTHOLOMEW, INDIANA
From 01-MAY-12 14:53:00 to 01-MAY-12 14:53:00 (EST-5)
Location: TAYLORSVILLE
Magnitude: 56.00 EG
Property damage: 3.00K
Reported by: Newspaper

Trees were reported down in this location due to damaging thunderstorm wind gusts.

Flood in MARION, INDIANA
From 01-MAY-12 15:14:00 to 01-MAY-12 17:00:00 (EST-5)
Location: RAVENSWOOD
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: COOP Observer

Street flooding was observed along Keystone and Kessler Avenues due to thunderstorm heavy rainfall.

Flood in HANCOCK, INDIANA
From 01-MAY-12 19:11:00 to 01-MAY-12 21:00:00 (EST-5)
Location: GREENFIELD
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy flooding was reported along Highway 9 in Greenfield due to thunderstorm heavy rainfall.

Hail in BROWN, INDIANA
From 01-MAY-12 14:47:00 to 01-MAY-12 14:49:00 (EST-5)
Location: NASHVILLE
Magnitude: 1.00 
Reported by: Amateur Radio