Thunderstorms developed in warm and unstable air ahead of an approaching cold front during the afternoon and evening hours of May 21. These storms continued into the early morning hours of May 22. Large hail, torrential rain, and some damaging winds accompanied the storms as they moved through the area. Golf ball size hail fell in the Indianapolis area, and the heavy rain caused flash flooding in the same area.
The biggest severe weather event of the month took place on the afternoon and evening of the 21st into the early morning of the 22nd as severe thunderstorms developed along a cold front. Wind damage and large hail were common with the storms, with baseball sized hail confirmed in Waveland in Montgomery County. Numerous reports of half dollar to golf ball size hail along with flash flooding came from the southern Indianapolis suburbs as storms repeatedly tracked across the area and produced up to 3 inches of rain.

Hail in HENDRICKS, INDIANA
From 21-MAY-14 16:39:00 to 21-MAY-14 16:41:00 (EST-5)
Location: CLAYTON
Magnitude: 1.00 
Reported by: Amateur Radio

Hail in MORGAN, INDIANA
From 21-MAY-14 16:51:00 to 21-MAY-14 16:53:00 (EST-5)
Location: MOORESVILLE
Magnitude: 0.88 
Reported by: Public

Hail in DECATUR, INDIANA
From 21-MAY-14 16:45:00 to 21-MAY-14 16:47:00 (EST-5)
Location: GREENSBURG
Magnitude: 1.25 
Reported by: Public

Hail in HENDRICKS, INDIANA
From 21-MAY-14 16:45:00 to 21-MAY-14 16:47:00 (EST-5)
Location: PLAINFIELD
Magnitude: 1.00 
Reported by: Public

Hail in MORGAN, INDIANA
From 21-MAY-14 16:51:00 to 21-MAY-14 16:53:00 (EST-5)
Location: BETHANY
Magnitude: 0.88 
Reported by: Public

Hail in MORGAN, INDIANA
From 21-MAY-14 16:53:00 to 21-MAY-14 16:55:00 (EST-5)
Location: MOORESVILLE
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Public

This report came in from a retired NWS employee.

Hail in MORGAN, INDIANA
From 21-MAY-14 16:58:00 to 21-MAY-14 17:00:00 (EST-5)
Location: BETHANY
Magnitude: 1.00 
Reported by: Public

This report came in from a retired NWS employee.

Hail in MONROE, INDIANA
From 21-MAY-14 23:06:00 to 21-MAY-14 23:08:00 (EST-5)
Location: NEW UNIONVILLE
Magnitude: 0.88 
Reported by: Trained Spotter

Hail in PARKE, INDIANA
From 21-MAY-14 21:05:00 to 21-MAY-14 21:11:00 (EST-5)
Location: LYFORD
Magnitude: 1.75 
Reported by: County Official

Hail drifts, up to two feet in height, were reported from the southern part of the county.

Hail in MONTGOMERY, INDIANA
From 21-MAY-14 16:55:00 to 21-MAY-14 16:57:00 (EST-5)
Location: WAVELAND
Magnitude: 2.75 
Reported by: Public

This report came in via Facebook.

Hail in MONROE, INDIANA
From 21-MAY-14 23:36:00 to 21-MAY-14 23:38:00 (EST-5)
Location: KIRBY
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in TIPPECANOE, INDIANA
From 21-MAY-14 12:18:00 to 21-MAY-14 12:20:00 (EST-5)
Location: WEST LAFAYETTE
Magnitude: 0.75 
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in TIPPECANOE, INDIANA
From 21-MAY-14 12:21:00 to 21-MAY-14 12:23:00 (EST-5)
Location: WEST LAFAYETTE
Magnitude: 0.88 
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in MARION, INDIANA
From 21-MAY-14 15:40:00 to 21-MAY-14 15:40:00 (EST-5)
Location: EDGEWOOD
Magnitude: 52.00 EG
Reported by: Emergency Manager

An estimated thunderstorm wind gust of 60 mph was observed in this location.

Thunderstorm Wind in HENDRICKS, INDIANA
From 21-MAY-14 15:54:00 to 21-MAY-14 15:56:00 (EST-5)
Location: AVON
Magnitude: 52.00 EG
Reported by: Amateur Radio

An estimated thunderstorm wind gust of 60 mph was observed in this location.

Hail in CLINTON, INDIANA
From 21-MAY-14 13:08:00 to 21-MAY-14 13:10:00 (EST-5)
Location: FRANKFORT
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gusts of up to 50 mph were also reported.

Hail in CLINTON, INDIANA
From 21-MAY-14 13:12:00 to 21-MAY-14 13:14:00 (EST-5)
Location: CLINTON CO ARPT
Magnitude: 1.00 
Reported by: County Official

This one inch hail report came in from a location just south of the Frankfort Airport.

Hail in BOONE, INDIANA
From 21-MAY-14 13:29:00 to 21-MAY-14 13:31:00 (EST-5)
Location: MECHANICSBURG
Magnitude: 1.50 
Reported by: Amateur Radio

This report came in from near the intersection of County Roads 200 East and 850 North.

Thunderstorm Wind in JOHNSON, INDIANA
From 21-MAY-14 15:55:00 to 21-MAY-14 15:55:00 (EST-5)
Location: GREENWOOD SKYWAY ARP
Magnitude: 61.00 EG
Property damage: 7.00K
Reported by: Trained Spotter

Trees were snapped or uprooted in this location due to damaging thunderstorm wind gusts.

Hail in BOONE, INDIANA
From 21-MAY-14 13:43:00 to 21-MAY-14 13:45:00 (EST-5)
Location: ELIZAVILLE
Magnitude: 1.75 
Reported by: Amateur Radio

This report came in from near the intersection of County Road 375 East and State Route 47.

Hail in BOONE, INDIANA
From 21-MAY-14 14:11:00 to 21-MAY-14 14:13:00 (EST-5)
Location: ROSSTON
Magnitude: 0.88 
Reported by: Amateur Radio

This report came in from near the intersection of Highway 421 and State Route 32.

Hail in MARION, INDIANA
From 21-MAY-14 15:00:00 to 21-MAY-14 15:02:00 (EST-5)
Location: TRADERS PT
Magnitude: 0.88 
Reported by: Amateur Radio

Thunderstorm Wind in MORGAN, INDIANA
From 21-MAY-14 16:05:00 to 21-MAY-14 16:05:00 (EST-5)
Location: MOORESVILLE
Magnitude: 56.00 EG
Property damage: 7.00K
Reported by: County Official

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

Thunderstorm Wind in SHELBY, INDIANA
From 21-MAY-14 16:10:00 to 21-MAY-14 16:10:00 (EST-5)
Location: MT AUBURN
Magnitude: 56.00 EG
Property damage: 2.50K
Reported by: Public

Two trees were uprooted and a trampoline was thrown on a tree due to damaging thunderstorm wind gusts in this location.

Thunderstorm Wind in JOHNSON, INDIANA
From 21-MAY-14 15:54:00 to 21-MAY-14 15:54:00 (EST-5)
Location: ROCKLANE
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Amateur Radio

A two-foot diameter section of a tree was split, blocking Rocklane Road, due to damaging thunderstorm wind gusts. Public safety was on the scene.

Thunderstorm Wind in SHELBY, INDIANA
From 21-MAY-14 16:58:00 to 21-MAY-14 16:58:00 (EST-5)
Location: FLAT ROCK
Magnitude: 56.00 EG
Property damage: 7.00K
Reported by: Amateur Radio

Trees were reported down in southern Shelby County near the intersection of County Roads 700 South and 300 East due to damaging thunderstorm wind gusts.

Hail in MARION, INDIANA
From 21-MAY-14 15:16:00 to 21-MAY-14 15:18:00 (EST-5)
Location: INDIANAPOLIS
Magnitude: 1.25 
Crop damage: 0.00K
Reported by: Public

This report was received via Facebook.

Hail in MARION, INDIANA
From 21-MAY-14 15:23:00 to 21-MAY-14 15:25:00 (EST-5)
Location: INDIANAPOLIS
Magnitude: 0.88 
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in MARION, INDIANA
From 21-MAY-14 15:23:00 to 21-MAY-14 15:25:00 (EST-5)
Location: INDIANAPOLIS
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Amateur Radio

This report came in from the WTHR Studio at 10th Street and Meridian Street.

Hail in MARION, INDIANA
From 21-MAY-14 15:24:00 to 21-MAY-14 15:26:00 (EST-5)
Location: INDIANAPOLIS
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in BARTHOLOMEW, INDIANA
From 21-MAY-14 17:00:00 to 21-MAY-14 17:00:00 (EST-5)
Location: HOPE
Magnitude: 56.00 EG
Property damage: 7.00K
Reported by: County Official

Trees were downed in location due to damaging thunderstorm wind gusts.

Thunderstorm Wind in MARION, INDIANA
From 21-MAY-14 15:50:00 to 21-MAY-14 15:50:00 (EST-5)
Location: SOUTHPORT
Magnitude: 56.00 EG
Property damage: 7.00K
Reported by: NWS Employee

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

Hail in MARION, INDIANA
From 21-MAY-14 15:24:00 to 21-MAY-14 15:26:00 (EST-5)
Location: INDIANAPOLIS
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Trained Spotter

This report came in from the Fountain Square area.

Hail in MARION, INDIANA
From 21-MAY-14 15:25:00 to 21-MAY-14 15:27:00 (EST-5)
Location: FLACKVILLE
Magnitude: 0.75 
Crop damage: 0.00K
Reported by: Trained Spotter

This report came in from the IUPUI area.

Hail in MARION, INDIANA
From 21-MAY-14 15:29:00 to 21-MAY-14 15:31:00 (EST-5)
Location: BEECH GROVE
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in JACKSON, INDIANA
From 21-MAY-14 18:55:00 to 21-MAY-14 18:55:00 (EST-5)
Location: CROTHERSVILLE
Magnitude: 56.00 EG
Property damage: 7.00K
Reported by: Law Enforcement

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

Thunderstorm Wind in VERMILLION, INDIANA
From 21-MAY-14 20:15:00 to 21-MAY-14 20:15:00 (EST-5)
Location: JONESTOWN
Magnitude: 56.00 EG
Property damage: 7.00K
Reported by: Department of Highways

Trees were downed between County Roads 1050 South and 1150 South near County Road 75 West due to damaging thunderstorm wind gusts.

Thunderstorm Wind in DECATUR, INDIANA
From 21-MAY-14 20:45:00 to 21-MAY-14 20:45:00 (EST-5)
Location: WESTPORT
Magnitude: 56.00 EG
Property damage: 7.00K
Reported by: County Official

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

Hail in MARION, INDIANA
From 21-MAY-14 15:30:00 to 21-MAY-14 15:32:00 (EST-5)
Location: INDIANAPOLIS
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Public

Hail in MARION, INDIANA
From 21-MAY-14 15:30:00 to 21-MAY-14 15:32:00 (EST-5)
Location: SOUTHPORT
Magnitude: 1.25 
Reported by: Storm Chaser

Thunderstorm Wind in VERMILLION, INDIANA
From 21-MAY-14 21:25:00 to 21-MAY-14 21:25:00 (EST-5)
Location: DANA
Magnitude: 56.00 EG
Property damage: 8.00K
Reported by: Law Enforcement

Trees were reported down in this location due to damaging thunderstorm wind gusts. Some minor street flooding was also noted.

Hail in MARION, INDIANA
From 21-MAY-14 15:34:00 to 21-MAY-14 15:36:00 (EST-5)
Location: BEECH GROVE
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in MARION, INDIANA
From 21-MAY-14 15:33:00 to 21-MAY-14 15:35:00 (EST-5)
Location: EDGEWOOD
Magnitude: 1.25 
Reported by: Trained Spotter

Street flooding was also noted in this location.

Hail in HENDRICKS, INDIANA
From 21-MAY-14 15:34:00 to 21-MAY-14 15:36:00 (EST-5)
Location: BROWNSBURG ARPT
Magnitude: 1.50 
Reported by: Amateur Radio

This report came in from near the intersection of County Roads 550 North and 400 East.

Thunderstorm Wind in PUTNAM, INDIANA
From 21-MAY-14 21:15:00 to 21-MAY-14 21:15:00 (EST-5)
Location: PLEASANT GARDEN
Magnitude: 56.00 EG
Reported by: Fire Department/Rescue

An estimated thunderstorm wind gust of 65 mph was observed in this location.

Thunderstorm Wind in LAWRENCE, INDIANA
From 22-MAY-14 00:00:00 to 22-MAY-14 00:00:00 (EST-5)
Location: LEESVILLE
Magnitude: 56.00 EG
Property damage: 7.00K
Reported by: County Official

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

Thunderstorm Wind in VIGO, INDIANA
From 22-MAY-14 00:05:00 to 22-MAY-14 00:05:00 (EST-5)
Location: PIMENTO
Magnitude: 56.00 EG
Property damage: 7.00K
Reported by: Department of Highways

Trees were downed along French Drive due to damaging thunderstorm wind gusts.

Thunderstorm Wind in JENNINGS, INDIANA
From 22-MAY-14 00:05:00 to 22-MAY-14 00:05:00 (EST-5)
Location: HAYDEN
Magnitude: 56.00 EG
Property damage: 7.00K
Reported by: County Official

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

Hail in MARION, INDIANA
From 21-MAY-14 15:35:00 to 21-MAY-14 15:37:00 (EST-5)
Location: BEECH GROVE
Magnitude: 0.88 
Reported by: Amateur Radio

Hail in FOUNTAIN, INDIANA
From 21-MAY-14 15:35:00 to 21-MAY-14 15:37:00 (EST-5)
Location: KINGMAN
Magnitude: 1.50 
Reported by: Public

This report was received via Facebook.

Hail in MARION, INDIANA
From 21-MAY-14 15:38:00 to 21-MAY-14 15:40:00 (EST-5)
Location: EDGEWOOD
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: NWS Employee

This report came in from near the intersection of Interstate 465 and Highway 31.

Flash Flood in BOONE, INDIANA
From 21-MAY-14 16:36:00 to 21-MAY-14 19:00:00 (EST-5)
Location: LEBANON
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Eighteen inches of water was reported to be over Smiley Street in Lebanon due to heavy thunderstorm rainfall.

Flash Flood in MARION, INDIANA
From 21-MAY-14 16:30:00 to 21-MAY-14 18:30:00 (EST-5)
Location: EDGEWOOD
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Water was reportedly approximately two feet deep at the intersection of Emerson Drive and Edgewood Drive due to heavy thunderstorm rainfall.

Hail in FOUNTAIN, INDIANA
From 21-MAY-14 15:42:00 to 21-MAY-14 15:44:00 (EST-5)
Location: KINGMAN
Magnitude: 1.75 
Reported by: Amateur Radio

Hail in MARION, INDIANA
From 21-MAY-14 15:40:00 to 21-MAY-14 15:42:00 (EST-5)
Location: EDGEWOOD
Magnitude: 1.00 
Reported by: Emergency Manager

Hail in MARION, INDIANA
From 21-MAY-14 15:44:00 to 21-MAY-14 15:46:00 (EST-5)
Location: HOMECROFT
Magnitude: 1.00 
Reported by: Amateur Radio

Hail in HENDRICKS, INDIANA
From 21-MAY-14 15:45:00 to 21-MAY-14 15:47:00 (EST-5)
Location: BROWNSBURG
Magnitude: 0.75 
Reported by: Amateur Radio

Hail in BOONE, INDIANA
From 21-MAY-14 15:45:00 to 21-MAY-14 15:47:00 (EST-5)
Location: NORTHFIELD
Magnitude: 0.88 
Reported by: Public

Hail in MARION, INDIANA
From 21-MAY-14 15:48:00 to 21-MAY-14 15:50:00 (EST-5)
Location: ACTON
Magnitude: 1.00 
Reported by: NWS Employee

Flash Flood in BOONE, INDIANA
From 21-MAY-14 17:03:00 to 21-MAY-14 19:00:00 (EST-5)
Location: LEBANON
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Two feet of water was on the road in areas between the 500 to 800 block of East Street due to heavy thunderstorm rainfall.

Hail in MARION, INDIANA
From 21-MAY-14 15:50:00 to 21-MAY-14 15:52:00 (EST-5)
Location: BEECH GROVE
Magnitude: 1.25 
Reported by: Public

This report came in via Facebook.

Hail in SHELBY, INDIANA
From 21-MAY-14 16:13:00 to 21-MAY-14 16:15:00 (EST-5)
Location: SHELBYVILLE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in PUTNAM, INDIANA
From 21-MAY-14 15:53:00 to 21-MAY-14 15:55:00 (EST-5)
Location: BAINBRIDGE
Magnitude: 0.88 
Reported by: Emergency Manager

Hail in HENDRICKS, INDIANA
From 21-MAY-14 16:19:00 to 21-MAY-14 16:21:00 (EST-5)
Location: COATESVILLE
Magnitude: 1.00 
Reported by: Amateur Radio

Hail in MARION, INDIANA
From 21-MAY-14 15:54:00 to 21-MAY-14 15:56:00 (EST-5)
Location: ACTON
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in MONTGOMERY, INDIANA
From 21-MAY-14 16:30:00 to 21-MAY-14 16:32:00 (EST-5)
Location: BROWNS VLY
Magnitude: 1.00 
Reported by: Department of Highways

Thunderstorm Wind in BOONE, INDIANA
From 21-MAY-14 16:00:00 to 21-MAY-14 16:00:00 (EST-5)
Location: LEBANON
Magnitude: 61.00 EG
Property damage: 10.00K
Reported by: Trained Spotter

Numerous trees and power lines were downed due to damaging thunderstorm wind gusts. One of the trees was a three-foot diameter tree and a utility pole was down as well.