A slow-moving area of upper level low pressure tapped into a tropical moisture feed associated with Hurricane Joaquin (located across the western Atlantic, well off the southeast coast) to produce periods of moderate to heavy rainfall across Upstate South Carolina throughout the 3rd and 4th. The main area impacted was the lower Piedmont, which saw storm total amounts in the 7-10 inches range. Much of that fell on the night of the 3rd and early on the 4th, when the most significant flooding developed over these areas. In addition to the flooding, the combination of saturated soils and winds gusting in excess of 20 mph caused many trees to fall across the area, with some trees falling on homes and vehicles. The Upstate was spared the worst of the heavy rain and flooding, as portions of the South Carolina midlands and coastal plain saw storm total amounts of 15-25 inches during this historic event.

Flash Flood in GREENWOOD, SOUTH CAROLINA
From 03-OCT-15 22:50:00 to 04-OCT-15 01:00:00 (EST-5)
Location: GRENDEL MILLS
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

After moderate to occasionally heavy rain fell across the area throughout the 3rd, an area of very heavy rain moved out of the midlands during the evening of the 3rd, increasing rainfall rates enough to cause flash flooding across portions of Greenwood County. Wilson Creek overflowed its banks and flooded Siloam Church Rd, while Cobb Rd was closed due to flooding along a tributary to Rocky Creek.

Flash Flood in ABBEVILLE, SOUTH CAROLINA
From 04-OCT-15 00:30:00 to 04-OCT-15 02:00:00 (EST-5)
Location: CALHOUN FALLS ARPT
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: 911 Call Center

After moderate to occasionally heavy rain fell across the area throughout the 3rd, an area of very heavy rain moved out of the midlands during the late evening of the 3rd and early morning hours on the 4th, increasing rainfall rates enough to cause flash flooding across portions of Abbeville County. County comms reported flooding along McKenley Creek and its tributaries, with water covering two bridges on McKenley Creek Rd.

Flood in GREENWOOD, SOUTH CAROLINA
From 04-OCT-15 01:30:00 to 04-OCT-15 18:00:00 (EST-5)
Location: GODSEY
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: 911 Call Center

After early morning flash flooding, rain rates moderated across the lower Piedmont, but flooding continued and gradually expanded, with high water conditions remaining in place throughout much of the 4th. At the height of the event, at least a dozen roads were closed due to urban/drainage flooding issues or due to lingering high flow conditions on small streams, especially in the city of Greenwood and surrounding areas. In addition to the flooding, the combination of saturated soils and winds gusting in excess of 20 mph caused numerous trees to fall throughout this period of time. Several trees fell on homes in the city of Greenwood.

Flood in ABBEVILLE, SOUTH CAROLINA
From 04-OCT-15 04:00:00 to 04-OCT-15 16:00:00 (EST-5)
Location: ABBEVILLE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

After early morning flash flooding, rain rates moderated across the lower Piedmont, but flooding gradually expanded, with high water conditions remaining in place throughout much of the 4th. The main stream affected during this time was Dry Creek and/or Long Cane Creek, with Miller Mill Rd closed due to high water.

Heavy Rain in ABBEVILLE, SOUTH CAROLINA
From 04-OCT-15 03:15:00 to 04-OCT-15 03:15:00 (EST-5)
Location: CALHOUN FALLS
Property damage: 25.00K
Crop damage: 0.00K
Reported by: 911 Call Center

County comms reported the combination of saturated soils due to heavy rainfall and winds gusting in excess of 20 mph caused a large oak tree to fall on the back section of a house in Calhoun Falls.

Flood in GREENVILLE, SOUTH CAROLINA
From 04-OCT-15 07:30:00 to 04-OCT-15 15:00:00 (EST-5)
Location: BEREA
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

After 5 to 7 inches of rain fell across central Greenville County in more than a 24 hour period, flooding developed along the Reedy River during the morning, flooding part of Cleveland Park. A tributary of the Reedy may have flooded the intersection of Sulphur Springs Rd and Watkins Rd.

Flood in LAURENS, SOUTH CAROLINA
From 04-OCT-15 05:00:00 to 04-OCT-15 19:00:00 (EST-5)
Location: BONDS XRDS
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

After as much as 10 inches of rain fell across Laurens County in a 24 hour period, flooding developed during the early morning of the 4th and continued through the day. Multiple roads were closed throughout the county due to a combination of urban/poor drainage flooding and stream flooding. Streams that flooded included Cane Creek, Little River, and Indian Creek.

Heavy Rain in UNION, SOUTH CAROLINA
From 04-OCT-15 05:00:00 to 04-OCT-15 05:00:00 (EST-5)
Location: UNION
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

Newspaper reported a combination of saturated soil and winds gusting in excess of 20 mph caused a tree to fall on a parked vehicle on Gault Ave.