Irma made landfall in south Florida as a category 4 hurricane on Sunday, September 10th, then moved north up the Florida peninsula during the day and night while gradually weakening. Irma weakened to Tropical Storm status while over north Florida Monday morning September 11th, and shifted NW over SW Georgia and into Alabama through Monday night while weakening to a Depression. Copious rainfall amounts associated with the cyclone occurred across the Central Savannah River Area (CSRA) of GA and the Midlands of SC, which generally fell from late Sunday night, through Monday and Monday night the 11th, and into the early morning hours of Tuesday the 12th. In addition, the pressure gradient between the cyclone to our SW, and high pressure to our north, provided strong wind gusts over the region as well which downed numerous trees. The strongest wind gusts occurred Monday afternoon Sept 11th.

Tornado in BAMBERG, SOUTH CAROLINA
From 11-SEP-17 18:01:00 to 11-SEP-17 18:05:00 (EST-5)
Location: OLAR
Tornado F-scale: EF0
Reported by: NWS Storm Survey

NWS storm survey team confirmed an EF-0 tornado touched down just NE of Olar, SC, moved to the NNW and dissipated approximately 4 minutes later near Govan, SC. The tornado was associated with the circulation of tropical cyclone Irma.
The tornado touched down just northwest of the town of Olar along Thunder Road. The tornado continued north-northwest for approximately 2 miles. The tornado crossed Thunder Road, Red Fox Road, Memorial Church Road and dissipated before reaching Ehrhardt Road. The tornado downed a few trees and several large limbs along it's path. The tornado was brief, only staying on the ground for approximately
4 minutes.

Heavy Rain in BAMBERG, SOUTH CAROLINA
From 11-SEP-17 00:00:00 to 12-SEP-17 08:00:00 (EST-5)
Location: DENMARK
Reported by: CoCoRaHS

CoCoRaHS observer measured a total rainfall amount of 6.80 inches 3 miles WNW of Denmark.

Heavy Rain in ORANGEBURG, SOUTH CAROLINA
From 11-SEP-17 00:00:00 to 12-SEP-17 08:00:00 (EST-5)
Location: HOLLY HILL
Reported by: COOP Observer

COOP observer near Holly Hill measured a total rainfall amount of 7.18 inches.

Heavy Rain in LEXINGTON, SOUTH CAROLINA
From 11-SEP-17 00:00:00 to 12-SEP-17 08:00:00 (EST-5)
Location: LEXINGTON
Reported by: CoCoRaHS

CoCoRaHS observer measured a total rainfall amount of 5.86 inches 2 miles E of Lexington.

Heavy Rain in LEXINGTON, SOUTH CAROLINA
From 11-SEP-17 00:00:00 to 12-SEP-17 08:00:00 (EST-5)
Location: (CAE)COLUMBIA METRO
Reported by: ASOS

ASOS unit at Columbia SC Metropolitan Airport measured a total rainfall amount of 3.78 inches.

Heavy Rain in ORANGEBURG, SOUTH CAROLINA
From 11-SEP-17 00:00:00 to 12-SEP-17 08:00:00 (EST-5)
Location: ORANGEBURG ARPT
Reported by: ASOS

ASOS unit at Orangeburg SC Municipal Airport measured a total rainfall amount of 3.86 inches.

Heavy Rain in RICHLAND, SOUTH CAROLINA
From 11-SEP-17 00:00:00 to 12-SEP-17 08:00:00 (EST-5)
Location: COLUMBIA OWENS ARPT
Reported by: ASOS

ASOS unit at Hamilton-Owens Airport in Columbia measured a total rainfall amount of 3.10 inches.

Heavy Rain in BARNWELL, SOUTH CAROLINA
From 11-SEP-17 00:00:00 to 12-SEP-17 08:00:00 (EST-5)
Location: HILDA
Reported by: COOP Observer

COOP observer 5 miles ENE of Barnwell measured a total rainfall amount of 6.35 inches.

Heavy Rain in AIKEN, SOUTH CAROLINA
From 11-SEP-17 00:00:00 to 12-SEP-17 08:00:00 (EST-5)
Location: WINDSOR
Reported by: CoCoRaHS

CoCoRaHS observer measured a total rainfall amount of 5.75 inches 3 miles ESE of Windsor.

Heavy Rain in CLARENDON, SOUTH CAROLINA
From 11-SEP-17 00:00:00 to 12-SEP-17 08:00:00 (EST-5)
Location: ST PAUL
Reported by: RAWS

RAWS unit 5 miles NNE of Santee at Santee NWR measured a total rainfall amount of 5.96 inches.

Heavy Rain in RICHLAND, SOUTH CAROLINA
From 11-SEP-17 00:00:00 to 12-SEP-17 08:00:00 (EST-5)
Location: WATEREE
Reported by: Mesonet

RCWINDS unit near the town of Wateree measured a total rainfall amount of 5.27 inches.

High Wind in AIKEN, SOUTH CAROLINA
From 11-SEP-17 09:00:00 to 12-SEP-17 09:05:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

SCHP reported several trees down across SW Aiken Co.

High Wind in ORANGEBURG, SOUTH CAROLINA
From 11-SEP-17 08:30:00 to 11-SEP-17 08:35:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

SCHP reported several trees down between Norway and Orangeburg along US Hwy 301 and SC Hwy 400.

High Wind in AIKEN, SOUTH CAROLINA
From 11-SEP-17 09:00:00 to 11-SEP-17 09:05:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

SCHP reports several trees down in Aiken Co near the city of North Augusta.

High Wind in RICHLAND, SOUTH CAROLINA
From 11-SEP-17 10:45:00 to 11-SEP-17 10:50:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

SCHP reported a few trees down in the southern portion of Richland Co mainly near Eastover.

High Wind in AIKEN, SOUTH CAROLINA
From 11-SEP-17 10:50:00 to 11-SEP-17 10:55:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

SCHP reported several trees down near Aiken.

High Wind in FAIRFIELD, SOUTH CAROLINA
From 11-SEP-17 12:00:00 to 11-SEP-17 12:05:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Broadcast Media

Large pine tree snapped off on Old Camden Rd and Forest Hills Dr.

High Wind in BARNWELL, SOUTH CAROLINA
From 11-SEP-17 12:10:00 to 11-SEP-17 12:15:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Social Media

Trees down on power lines at Gardenia Rd near SC Hwy 3.

Strong Wind in BARNWELL, SOUTH CAROLINA
From 11-SEP-17 13:04:00 to 11-SEP-17 13:04:00 (EST-5)
Magnitude: 48.00 MG
Property damage: 0.10K
Crop damage: 0.10K
Reported by: Public

Public measured a peak wind gust of 55 MPH near Blackville.

High Wind in BARNWELL, SOUTH CAROLINA
From 11-SEP-17 13:13:00 to 11-SEP-17 13:15:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Public

Trees down along Jones Bridge Rd.

High Wind in LEXINGTON, SOUTH CAROLINA
From 11-SEP-17 13:15:00 to 11-SEP-17 13:17:00 (EST-5)
Magnitude: 50.00 EG
Reported by: NWS Employee

Trees down on power lines on Railroad Ave in Lexington.

Strong Wind in ORANGEBURG, SOUTH CAROLINA
From 11-SEP-17 14:14:00 to 11-SEP-17 14:14:00 (EST-5)
Magnitude: 47.00 MG
Property damage: 0.10K
Crop damage: 0.10K
Reported by: ASOS

ASOS unit at Orangeburg SC Municipal Airport measured a peak wind gust of 54 MPH at 3:14 pm EDT (1414 EST).

High Wind in RICHLAND, SOUTH CAROLINA
From 11-SEP-17 14:45:00 to 11-SEP-17 14:50:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Social Media

Bluff Rd blocked by downed trees and power lines between Lower Richland Blvd and Coley Rd.

High Wind in RICHLAND, SOUTH CAROLINA
From 11-SEP-17 15:35:00 to 11-SEP-17 15:40:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

Columbia SC Police Dept reported, via social media, that a large tree fell on a vehicle at the 1500 block of Maple St. Power lines were also damaged. Subsequent reports indicated that a second tree may have also fallen onto another vehicle near that location.

Strong Wind in LEXINGTON, SOUTH CAROLINA
From 11-SEP-17 15:42:00 to 11-SEP-17 15:42:00 (EST-5)
Magnitude: 44.00 MG
Property damage: 0.10K
Crop damage: 0.10K
Reported by: ASOS

ASOS unit at Columbia SC Metropolitan Airport measured a peak wind gust of 51 MPH at 4:42 pm EDT (1542 EST).

High Wind in MCCORMICK, SOUTH CAROLINA
From 11-SEP-17 15:35:00 to 11-SEP-17 15:40:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Other Federal Agency

J Strom Thurmond Dam operations manager reported that the entrance to Hawe Creek Campground blocked due to a downed tree.

High Wind in LEXINGTON, SOUTH CAROLINA
From 11-SEP-17 15:48:00 to 11-SEP-17 15:50:00 (EST-5)
Magnitude: 50.00 EG
Reported by: County Official

Large tree down on a home on Duchess Trail Rd.

High Wind in LEXINGTON, SOUTH CAROLINA
From 11-SEP-17 15:50:00 to 11-SEP-17 15:55:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Law Enforcement

Power pole snapped with lines and transformers down in a parking lot of a fast food restaurant along Sunset Blvd in Lexington.

Strong Wind in LANCASTER, SOUTH CAROLINA
From 11-SEP-17 15:55:00 to 11-SEP-17 15:55:00 (EST-5)
Magnitude: 48.00 MG
Property damage: 0.10K
Crop damage: 0.10K
Reported by: AWOS

AWOS unit at Lancaster SC Airport measured a peak wind gust of 55 MPH at 4:55 pm EDT (1555 EST).

Strong Wind in SUMTER, SOUTH CAROLINA
From 11-SEP-17 17:19:00 to 11-SEP-17 17:19:00 (EST-5)
Magnitude: 44.00 MG
Property damage: 0.10K
Crop damage: 0.10K
Reported by: ASOS

ASOS unit at Shaw AFB near Sumter measured a peak wind gust of 51 MPH at 6:19 pm EDT (1719 EST).

High Wind in BAMBERG, SOUTH CAROLINA
From 11-SEP-17 17:30:00 to 11-SEP-17 17:35:00 (EST-5)
Magnitude: 50.00 EG
Reported by: Social Media

Tree down across Faust St in Bamberg.

Strong Wind in FAIRFIELD, SOUTH CAROLINA
From 11-SEP-17 17:35:00 to 11-SEP-17 17:35:00 (EST-5)
Magnitude: 46.00 MG
Property damage: 0.10K
Crop damage: 0.10K
Reported by: AWOS

AWOS unit at Fairfield Co Airport south of Winnsboro SC measured a peak wind gust of 53 MPH at 6:35 pm EDT (1735 EST).