A rapidly intensifying storm system tracking northeastward through the Quad Cities area produced strong low-level southerly flow over central Indiana, including a low level jet (LLJ) of 70 mph at the 850 mb level, during the evening and overnight of the 10th.  These winds near the surface brought unseasonably high dewpoints as high as the low to mid 60s that destabilized the atmosphere, while the LLJ resulted in anomalously high vertical wind shear.  Numerous lines of storms brought severe winds down to the surface, causing widespread wind damage, especially north of Interstate 70.  Some locations saw several periods of heavy rain whose rainfall totaled 1-2 inches;  which caused isolated flooding parallel to and about 20 miles north of Interstate 70.

Thunderstorm Wind in FOUNTAIN, INDIANA
From 10-DEC-21 23:55:00 to 10-DEC-21 23:55:00 (EST-5)
Location: KINGMAN
Magnitude: 65.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Grain bins blown over by thunderstorm wind gusts.

Thunderstorm Wind in CARROLL, INDIANA
From 11-DEC-21 00:45:00 to 11-DEC-21 00:45:00 (EST-5)
Location: FLORA
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Numerous trees and power lines down by thunderstorm wind gusts across Carroll County.

Flood in MONTGOMERY, INDIANA
From 11-DEC-21 02:02:00 to 11-DEC-21 04:30:00 (EST-5)
Location: NEW ROSS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Fields flooding onto some roadways due to heavy rain.

Thunderstorm Wind in PUTNAM, INDIANA
From 11-DEC-21 02:00:00 to 11-DEC-21 02:00:00 (EST-5)
Location: BAINBRIDGE
Magnitude: 55.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Several reports of downed trees and power lines by thunderstorm wind gusts across northeastern Putnam County.

Flood in DELAWARE, INDIANA
From 11-DEC-21 03:07:00 to 11-DEC-21 06:00:00 (EST-5)
Location: ALBANY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Overwhelmed storm drains in downtown Albany due to heavy rain, causing flooding about one foot deep near fire station.

Thunderstorm Wind in FOUNTAIN, INDIANA
From 10-DEC-21 23:55:00 to 10-DEC-21 23:55:00 (EST-5)
Location: SILVERWOOD
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees down by thunderstorm wind gusts across Fountain County.

Thunderstorm Wind in WARREN, INDIANA
From 10-DEC-21 23:55:00 to 10-DEC-21 23:55:00 (EST-5)
Location: PINE VLG
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Tree down by thunderstorm wind gusts on Indiana Route 26 west of Pine Village.

Thunderstorm Wind in RUSH, INDIANA
From 11-DEC-21 00:05:00 to 11-DEC-21 00:05:00 (EST-5)
Location: ARLINGTON
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Reports of trees down by thunderstorm wind gusts around Rush County.  Morristown lost power around midnight.  Reports received by dispatch thereafter.

Thunderstorm Wind in OWEN, INDIANA
From 11-DEC-21 00:06:00 to 11-DEC-21 00:06:00 (EST-5)
Location: SOUTHPORT
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At least 4 trees down by thunderstorm wind gusts prompted Indiana Route 67 closed between Carp and Freedom.

Thunderstorm Wind in DAVIESS, INDIANA
From 11-DEC-21 00:10:00 to 11-DEC-21 00:10:00 (EST-5)
Location: ELNORA
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Tree blown down by thunderstorm wind gust onto Indiana Route 57 at East County Road 1450 North.

Thunderstorm Wind in HAMILTON, INDIANA
From 11-DEC-21 02:36:00 to 11-DEC-21 02:36:00 (EST-5)
Location: CLARKSVILLE
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Near the Ruoff Music Center.  Reported on Twitter.

Thunderstorm Wind in SHELBY, INDIANA
From 11-DEC-21 03:34:00 to 11-DEC-21 03:34:00 (EST-5)
Location: SHELBYVILLE MUNI ARP
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Shelbyville Asos.

Thunderstorm Wind in KNOX, INDIANA
From 11-DEC-21 00:20:00 to 11-DEC-21 00:20:00 (EST-5)
Location: JOHNSTOWN
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees blown down by thunderstorm wind gusts in Bicknell and Edwardsport and on Transformer Road.  Also a tree caught on fire from lightning but burned out on its own.

Thunderstorm Wind in MONTGOMERY, INDIANA
From 11-DEC-21 00:25:00 to 11-DEC-21 00:25:00 (EST-5)
Location: WHITESVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Power lines blown down by thunderstorm wind gusts.

Thunderstorm Wind in MONTGOMERY, INDIANA
From 11-DEC-21 01:01:00 to 11-DEC-21 01:01:00 (EST-5)
Location: LADOGA
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Trees and large branches blown down by thunderstorm wind gusts.

Thunderstorm Wind in CLINTON, INDIANA
From 11-DEC-21 01:15:00 to 11-DEC-21 01:15:00 (EST-5)
Location: FRANKFORT
Magnitude: 52.00 EG
Property damage: 2.50K
Crop damage: 0.00K
Reported by: Public

Power poles and three inch tree limbs broken by thunderstorm wind gusts.

Thunderstorm Wind in MADISON, INDIANA
From 11-DEC-21 01:15:00 to 11-DEC-21 01:15:00 (EST-5)
Location: LEISURE
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several trees and power poles down by thunderstorm wind gusts across northern parts of Madison County.

Thunderstorm Wind in PARKE, INDIANA
From 11-DEC-21 01:20:00 to 11-DEC-21 01:20:00 (EST-5)
Location: ROCKVILLE
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Numerous trees down by thunderstorm wind gusts across Parke County.

Thunderstorm Wind in MADISON, INDIANA
From 11-DEC-21 01:30:00 to 11-DEC-21 01:30:00 (EST-5)
Location: SUMMITVILLE
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several trees and some power poles down by thunderstorm wind gusts across mainly northern Madison County.

Thunderstorm Wind in CLAY, INDIANA
From 11-DEC-21 01:50:00 to 11-DEC-21 01:50:00 (EST-5)
Location: CARDONIA
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Numerous trees and power lines down by thunderstorm wind gusts across northern Clay County.

Thunderstorm Wind in JOHNSON, INDIANA
From 11-DEC-21 01:50:00 to 11-DEC-21 01:50:00 (EST-5)
Location: STONES CROSSING
Magnitude: 60.00 EG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Electric poles and some trees down by thunderstorm wind gusts in Johnson County. Transformer fire in southern part of the county.

Thunderstorm Wind in PUTNAM, INDIANA
From 11-DEC-21 02:05:00 to 11-DEC-21 02:05:00 (EST-5)
Location: COMMERCIAL PLACE
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Numerous reports of trees and power lines downed by thunderstorm wind gusts across central Putnam County.

Thunderstorm Wind in MARION, INDIANA
From 11-DEC-21 02:22:00 to 11-DEC-21 02:22:00 (EST-5)
Location: NEW AUGUSTA
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

At West 79th Street and Georgetown Road.

Thunderstorm Wind in DELAWARE, INDIANA
From 11-DEC-21 02:57:00 to 11-DEC-21 02:57:00 (EST-5)
Location: DELAWARE CO ARPT
Magnitude: 52.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Public

Tree limbs broken and shingles blown off by thunderstorm wind gusts.

Thunderstorm Wind in RUSH, INDIANA
From 11-DEC-21 03:48:00 to 11-DEC-21 03:48:00 (EST-5)
Location: MAYS
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Tree blown  by thunderstorm wind gusts onto Indiana Route 9 near East County Road 900 North.

Thunderstorm Wind in DELAWARE, INDIANA
From 11-DEC-21 03:05:00 to 11-DEC-21 03:05:00 (EST-5)
Location: SELMA ARPT
Magnitude: 52.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Numerous reports of trees and or power lines blown down by thunderstorm wind gusts across southeast Delaware  County.  A tree fell into a house in Selma.

Thunderstorm Wind in MONROE, INDIANA
From 11-DEC-21 02:50:00 to 11-DEC-21 02:50:00 (EST-5)
Location: ELLETTSVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 3.00K
Reported by: Emergency Manager

Trees down by thunderstorm wind gusts across Monroe County.

Thunderstorm Wind in JOHNSON, INDIANA
From 10-DEC-21 21:38:00 to 10-DEC-21 21:38:00 (EST-5)
Location: GREENWOOD SKYWAY ARP
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm wind gusts blew tall Red Roof Inn sign over onto a car in parking lot.

Thunderstorm Wind in BROWN, INDIANA
From 10-DEC-21 21:41:00 to 10-DEC-21 21:41:00 (EST-5)
Location: MT LIBERTY
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Trees and power lines down by thunderstorm wind gusts all over Brown County.

Thunderstorm Wind in DELAWARE, INDIANA
From 11-DEC-21 02:53:00 to 11-DEC-21 02:53:00 (EST-5)
Location: (MIE)JOHNSON FLD MUN
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Muncie Asos.

Thunderstorm Wind in MONROE, INDIANA
From 11-DEC-21 02:55:00 to 11-DEC-21 02:55:00 (EST-5)
Location: (BMG)MNROE CO ARPT B
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Bloomington Asos.