A slow-moving cold front passed across the region between the 20th and 22nd. Several upper level disturbances moved north-northeast along the front, touching off numerous showers and thunderstorms. The ground was already moist from snowmelt in the wake of the early December winter storm. On the 21st, a strong negatively tilted shortwave at 500 mb ejected northeast from the southern Plains, providing strong forcing for ascent. Widespread heavy rain and thunderstorms surged northeast in association with the strengthening surface low that tracked across the Lower Ohio Valley. Storm total rainfall amounts ranged mainly from 4 to 7 inches, with the highest amounts north and west of Evansville. Ditches and creeks quickly spilled out onto roadways and into nearby fields. There were numerous road closures and water rescues as waters continued to rise.

Flood in WARRICK, INDIANA
From 22-DEC-13 00:15:00 to 22-DEC-13 12:00:00 (CST-6)
Location: TENNYSON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A vehicle was stranded in floodwaters on County Road 350N near Tennyson. One female was stuck in water and was rescued by fire department personnel. Indiana 68 between Indiana 57 and 61 (west of Lynnville) was closed due to high water.

Flash Flood in VANDERBURGH, INDIANA
From 21-DEC-13 10:33:00 to 22-DEC-13 00:15:00 (CST-6)
Location: EVANSVILLE
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Widespread street flooding occurred in Evansville. The Evansville Fire Department assisted at least one motorist stranded in floodwaters. The U.S. 41 South off-ramp for the Lloyd Expressway was closed due to standing floodwater. There were areas of standing or running water across sections of the Lloyd Expressway. All three lanes of the westbound side of the Lloyd Expressway were flooded at U.S. Highway 41. Water was over roads in a subdivision in Evansville. The calendar day rainfall total at the Evansville airport was 4.42 inches. On the west side of Evansville, a rainfall total of 5.10 inches was reported.

Flash Flood in GIBSON, INDIANA
From 21-DEC-13 12:48:00 to 22-DEC-13 00:15:00 (CST-6)
Location: HAUBSTADT
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Trained Spotter

County Road 800S was closed south of Fort Branch. A water rescue was conducted on County Road 750S near Fort Branch, where a mini-van was stranded in floodwater. Another water rescue was conducted on State Route 64 east of Oakland City, near the Pike County line. Three persons were standing on the roof of a car that was submerged in floodwater. Route 64 was closed near the county line. Near Oakland City, a truck was washed off the road on County Road 950E at 350S. West of Princeton, State Route 64 was closed near State Route 65 due to a levee breach. Other roads around the county were covered by water at various locations. A trained spotter in Fort Branch measured 6.80 inches of rain.

Thunderstorm Wind in SPENCER, INDIANA
From 21-DEC-13 18:40:00 to 21-DEC-13 18:40:00 (CST-6)
Location: ROCKPORT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured a wind gust to 63 mph near downtown Rockport.

Flash Flood in WARRICK, INDIANA
From 21-DEC-13 18:53:00 to 22-DEC-13 00:15:00 (CST-6)
Location: EAMES
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Fire and rescue personnel removed persons from a vehicle stranded in floodwaters on a local road near Tennyson. County Road 350N was flooded waist-high near State Route 161 in Tennyson. Significant street flooding occurred in Boonville. A van containing a woman and four children became stranded in floodwaters on Highway 261 between Chandler and Boonville.

Hail in SPENCER, INDIANA
From 21-DEC-13 18:40:00 to 21-DEC-13 18:40:00 (CST-6)
Location: RICHLAND CITY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash Flood in SPENCER, INDIANA
From 21-DEC-13 20:00:00 to 22-DEC-13 00:15:00 (CST-6)
Location: ROCKPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Standing water was over numerous roads throughout Rockport. Some roads had water flowing across them. A trained spotter in Rockport measured 5.05 inches since midnight.