Thunderstorms intensified within a zone of strong southerly low level winds that provided abundant warmth and moisture. The storms formed near a warm front that was draped across southern Illinois and western Kentucky. The storms occurred within a moist and moderately unstable air mass in the vicinity of the warm front. The strong moisture feed contributed to torrential downpours that produced pockets of flash flooding. Major flash flooding occurred in the Evansville area. Some main roads were flooded and impassable for up to 24 hours after the heavy rain. Storm total rainfall was locally from 4 to 6 inches, especially in the Evansville area and Warrick County.

Flash Flood in POSEY, INDIANA
From 03-APR-14 22:00:00 to 04-APR-14 05:00:00 (CST-6)
Location: MT VERNON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Roads were flooded with running water. Creeks were flowing out of their banks.

Heavy Rain in WARRICK, INDIANA
From 03-APR-14 00:00:00 to 03-APR-14 22:59:00 (CST-6)
Location: NEWBURGH
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a 24-hour rainfall of 4.17 inches. Standing water was over several town streets. The streets were still passable. Drainage ditches were over their banks in numerous locations.

Flash Flood in SPENCER, INDIANA
From 03-APR-14 16:47:00 to 04-APR-14 05:00:00 (CST-6)
Location: ROCKPORT
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Extensive street flooding occurred. There was significant flooding of Rockport city park. Storm total rainfall was 4.75 inches.

Flood in POSEY, INDIANA
From 04-APR-14 05:00:00 to 04-APR-14 19:00:00 (CST-6)
Location: MT VERNON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Some roads remained closed due to flooding.

Flash Flood in VANDERBURGH, INDIANA
From 03-APR-14 16:14:00 to 04-APR-14 05:00:00 (CST-6)
Location: STRINGTOWN
Flood cause: Heavy Rain
Property damage: 350.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Widespread flash flooding of streets and highways occurred in Evansville. A couple of major highways were impassable. The Lloyd Expressway was impassable at Highway 41. Vehicles were abandoned. At the Perry Township fire station, floodwaters in the station were up to the bumpers of the trucks, about 3 to 4 feet deep. The parking area was washed away, exposing a natural gas line approximately three feet deep.  A number of Evansville houses had major damage, such as basement walls collapsed. Small streams were well out of their banks. Water was shooting out of sewers. Water was flowing over numerous roads in Evansville. A storm total rainfall of 5.01 inches was reported along the Lloyd Expressway. An unofficial report of 6.00 inches was received on the southeast side of town.

Flood in VANDERBURGH, INDIANA
From 04-APR-14 05:00:00 to 04-APR-14 19:00:00 (CST-6)
Location: EVANSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Some low-lying areas remained flooded and streets remained closed.

Flood in SPENCER, INDIANA
From 04-APR-14 05:00:00 to 04-APR-14 19:00:00 (CST-6)
Location: ROCKPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

State Route 62 was closed from Gentryville to Dale due to flooding. Portions of State Routes 62 and 545 were closed near St. Meinrad.