During the evening, clusters of storms developed just north of a surface warm front that extended from the Missouri bootheel northeastward along the Ohio River. The warm front became stationary, and the area of storms tracked northeast across the same areas through the overnight and early morning hours. The repeated bouts of heavy-rain producing storms lasted 8 to 12 hours, resulting in excessive rainfall. Flash flooding occurred during the overnight hours of the 28th, along with an isolated severe storm over Evansville that produced large hail.

Flood in VANDERBURGH, INDIANA
From 29-APR-17 08:00:00 to 29-APR-17 13:00:00 (CST-6)
Location: EVANSVILLE DRESS ARP
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Following the flash flooding that occurred during the early morning hours, flooding of some roads lingered into the early afternoon hours.

Flash Flood in VANDERBURGH, INDIANA
From 28-APR-17 23:23:00 to 29-APR-17 08:00:00 (CST-6)
Location: EVANSVILLE
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash flooding was reported along a primary thoroughfare on the east side of Evansville, where one vehicle was stalled in water. In the Mill Creek area on the northwest side of Evansville, a vehicle was stuck in high water. Several locations on the north side of Evansville from Darmstadt to the northern city limits of Evansville were under water, including several intersections. Water entered at least one home. About six miles west of Evansville, the rainfall total was 5.87 inches for the previous 24 hours.

Hail in VANDERBURGH, INDIANA
From 29-APR-17 02:24:00 to 29-APR-17 02:32:00 (CST-6)
Location: MC CUTCHANVILLE
Magnitude: 2.00 
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail slightly larger than golf balls fell at McCutchanville. The hail size was estimated from a photo. Quarter-size hail was reported on U.S. Highway 41 north of the Evansville airport.

Flash Flood in PIKE, INDIANA
From 29-APR-17 06:45:00 to 29-APR-17 09:00:00 (EST-5)
Location: SPURGEON
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter near Stendal measured 8.32 inches of rain in 12 hours. Excessive runoff from hilly farm fields made driving impossible on some county roads. Ponds and creeks were out of their banks. State Highway 61 was closed between State Route 64 and Spurgeon. Numerous county roads were impassable.

Flood in POSEY, INDIANA
From 29-APR-17 08:00:00 to 29-APR-17 13:00:00 (CST-6)
Location: NEW HARMONY
Flood cause: Heavy Rain
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Following the flash flooding that occurred during the early morning hours, flooding of some roads lingered into the early afternoon hours. A water rescue was conducted near the intersection of Highways 66 and 69 near New Harmony, where the road was closed. A house basement wall collapsed a couple miles east of New Harmony.

Flash Flood in POSEY, INDIANA
From 29-APR-17 06:56:00 to 29-APR-17 08:00:00 (CST-6)
Location: SAVAH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous roads were underwater in the western part of the county. Water rescues were conducted just west of Mt. Vernon. A trained spotter in Poseyville measured 7.10 inches in the past 12 hours.

Hail in VANDERBURGH, INDIANA
From 28-APR-17 22:54:00 to 28-APR-17 23:03:00 (CST-6)
Location: EVANSVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dime-size hail was reported along a path from six miles west of Evansville into the city of Evansville.