Alert archive / South Carolina / Flood Watches in 2024

Flood Watch 4, NWS Columbia, SC

July 24, 202412 counties in South Carolina; 4 counties in Georgia

NWS Columbia, SC issued this flood watch at Jul 24, 2024, 4:19 AM EDT for 12 counties in South Carolina; 4 counties in Georgia. It took effect at Jul 24, 2024, 2:00 PM EDT. It was in force for 34 hr.

The area

The counties it named.

The facts

Issued: Jul 24, 2024, 4:19 AM EDT (08:19 UTC)
In effect from: Jul 24, 2024, 2:00 PM EDT
Expired: Jul 26, 2024, 12:00 AM EDT
In force: 34 hr
Issued by: NWS Columbia, SC
Flood severity: None

Counties Burke County, GA, Columbia County, GA, McDuffie County, GA, Richmond County, GA, Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Chesterfield County, SC, Clarendon County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 27 km from the middle of the area, began a volume at 08:22 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 8.3 hours before the alert went out and 313 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1886 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1644 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

Open this sounding in Storm Lab

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 23, 8:17 PM EDT	Special Weather Statement	CAE	Richland	43 min
Jul 23, 9:37 PM EDT	Special Weather Statement	CAE	McCormick	53 min
Jul 23, 10:33 PM EDT	Special Weather Statement	CAE	McCormick	42 min
Jul 23, 10:59 PM EDT	Special Weather Statement	CAE	Newberry, Saluda	46 min
Jul 23, 11:16 PM EDT	Special Weather Statement	CAE	Edgefield	29 min
Jul 23, 11:46 PM EDT	Special Weather Statement	CAE	Edgefield, Lexington, Newberry, Saluda	29 min
Jul 24, 12:07 AM EDT	Special Weather Statement	CAE	Richland	23 min
Jul 24, 12:31 AM EDT	Special Weather Statement	CAE	Richland	29 min
Jul 24, 12:43 AM EDT	Areal Flood Advisory	CAE	Lexington, Richland	62 min
Jul 24, 12:59 AM EDT	Flash Flood Warning	CAE	Lexington, Richland	111 min
Jul 24, 1:07 AM EDT	Special Weather Statement	CAE	Lee, Richland	38 min
Jul 24, 1:13 AM EDT	Areal Flood Advisory	CAE	Kershaw, Lee, Richland	2 hr
Jul 24, 1:16 AM EDT	Areal Flood Advisory	CAE	Chesterfield	59 min
Jul 24, 1:32 AM EDT	Flash Flood Warning	CAE	Kershaw, Lee, Richland, Sumter	38 min
Jul 24, 2:06 AM EDT	Special Weather Statement	CAE	Chesterfield	24 min
Jul 24, 2:23 AM EDT	Areal Flood Advisory	CAE	Chesterfield	52 min
Jul 24, 1:42 PM EDT	Special Weather Statement	CAE	Clarendon	33 min
Jul 24, 3:03 PM EDT	Special Weather Statement	CAE	Clarendon	27 min
Jul 24, 3:29 PM EDT	Special Weather Statement	CAE	Calhoun, Orangeburg	31 min
Jul 24, 3:35 PM EDT	Special Weather Statement	CAE	Bamberg	25 min
Jul 24, 3:42 PM EDT	Areal Flood Advisory	CAE	Orangeburg	103 min
Jul 24, 4:04 PM EDT	Special Weather Statement	CAE	Calhoun, Sumter	26 min
Jul 24, 4:32 PM EDT	Special Weather Statement	CAE	Edgefield, McCormick	28 min
Jul 24, 4:58 PM EDT	Areal Flood Advisory	CAE	Lexington, Richland	95 min
Jul 24, 5:04 PM EDT	Special Weather Statement	CAE	Kershaw	26 min
Jul 24, 5:10 PM EDT	Special Weather Statement	CAE	Lexington	50 min
Jul 24, 5:24 PM EDT	Areal Flood Advisory	CAE	Kershaw, Richland	68 min
Jul 24, 5:43 PM EDT	Flash Flood Warning	CAE	Kershaw, Lexington, Richland	89 min
Jul 24, 5:52 PM EDT	Special Weather Statement	CAE	Fairfield	53 min
Jul 24, 6:22 PM EDT	Special Weather Statement	CAE	Barnwell	23 min
Jul 24, 7:10 PM EDT	Areal Flood Advisory	CAE	Newberry	104 min
Jul 24, 2:14 PM EDT	Special Weather Statement	CAE	Burke	31 min
Jul 24, 2:55 PM EDT	Special Weather Statement	CAE	Burke	35 min
Jul 24, 6:17 PM EDT	Special Weather Statement	CAE	Lincoln	43 min

Nearby

Flood Watches in South Carolina, 2024 Flood Watches in Georgia, 2024 Every flood watch in 2024

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.