Alert archive / South Carolina / Flash Flood Watches in 2021
Flash Flood Watch 3, NWS Columbia, SC
NWS Columbia, SC issued this flash flood watch at Jun 20, 2021, 2:03 AM EDT for 5 counties in Georgia; 18 counties in South Carolina. It took effect at Jun 20, 2021, 8:00 AM EDT. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Jun 20, 2021, 2:03 AM EDT (06:03 UTC)
- In effect from
- Jun 20, 2021, 8:00 AM EDT
- Expired
- Jun 20, 2021, 7:23 PM EDT
- In force
- 11 hr
- Issued by
- NWS Columbia, SC
- Flood severity
- None
All 23 counties
Burke County, GA, Columbia County, GA, Lincoln 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, Edgefield County, SC, Fairfield County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC
The radar
The Columbia radar (KCAE), 22 km from the middle of the area, began a volume at 06:05 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
Charleston AFB, SC (KCHS), launched 00:00Z, 6.1 hours before the alert went out and 160 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.
- Mixed-layer CAPE
- 38 J/kg
- Mixed-layer CIN
- -175 J/kg
- Mixed-layer LCL
- 1384 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
096 WGUS62 KCAE 200603 FFACAE URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Columbia SC 203 AM EDT Sun Jun 20 2021 .Tropical Depression Claudette will cross the forecast area today and tonight. This system will bring periods of heavy rainfall across eastern Georgia and central South Carolina as it moves through the region. GAZ040-063>065-077-SCZ016-018-020>022-025>031-035-037-038-041-115- 116-135>137-201600- /O.NEW.KCAE.FF.A.0003.210620T1200Z-210621T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Lincoln-McDuffie-Columbia-Richmond-Burke-Chesterfield-McCormick- Newberry-Fairfield-Kershaw-Edgefield-Saluda-Lexington-Richland-Lee- Aiken-Sumter-Barnwell-Calhoun-Clarendon-Bamberg-Northern Lancaster- Southern Lancaster-Northwestern Orangeburg-Central Orangeburg- Southeastern Orangeburg- Including the cities of Lancaster, Bishopville, Hephzibah, Sumter, Orangeburg, Winnsboro, North, Columbia, Saluda, Newberry, Waynesboro, St. Matthews, Holly Hill, Ridge Spring, Lugoff, Blackville, Barnwell, Cayce, Winnsboro Mills, West Columbia, Bamberg, Lexington, Augusta, Seven Oaks, Lancaster Mill, Red Bank, Johnston, Pageland, Oak Grove, North Augusta, Denmark, Aiken, Elgin, Summerton, Edgefield, Mccormick, Evans, Indian Land, Thomson, Martinez, Manning, Cheraw, Camden, Williston, and Lincolnton 203 AM EDT Sun Jun 20 2021 ...FLASH FLOOD WATCH IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH MONDAY MORNING... The National Weather Service in Columbia has issued a * Flash Flood Watch for portions of east central Georgia and central South Carolina, including the following areas, in east central Georgia, Burke, Columbia, Lincoln, McDuffie and Richmond. In central South Carolina, Aiken, Bamberg, Barnwell, Calhoun, Central Orangeburg, Chesterfield, Clarendon, Edgefield, Fairfield, Kershaw, Lee, Lexington, McCormick, Newberry, Northern Lancaster, Northwestern Orangeburg, Richland, Saluda, Southeastern Orangeburg, Southern Lancaster and Sumter. * From 8 AM EDT this morning through Monday morning. * Bands of heavy rain associated with Tropical Depression Claudette will cross the area today and tonight. Training cells could produce areas of heavy rainfall and the potential for flash flooding. Rainfall totals of 1-3 inches, with isolated higher amounts, are likely across eastern Georgia and central South Carolina. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ CAL
2 follow-up statements
341 WGUS62 KCAE 201442 FFACAE Flood Watch National Weather Service Columbia SC 1042 AM EDT Sun Jun 20 2021 .Tropical Depression Claudette continues to approach the area from the west, bringing copious moisture along with it. Widespread showers are expected to continue developing late this morning and this afternoon, bringing heavy rainfall to east-central Georgia and central South Carolina. GAZ040-063>065-077-SCZ016-018-020>022-025>031-035-037-038-041-115- 116-135>137-210200- /O.CON.KCAE.FF.A.0003.000000T0000Z-210621T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Lincoln-McDuffie-Columbia-Richmond-Burke-Chesterfield-McCormick- Newberry-Fairfield-Kershaw-Edgefield-Saluda-Lexington-Richland-Lee- Aiken-Sumter-Barnwell-Calhoun-Clarendon-Bamberg-Northern Lancaster- Southern Lancaster-Northwestern Orangeburg-Central Orangeburg- Southeastern Orangeburg- Including the cities of Lancaster, Bishopville, Hephzibah, Sumter, Orangeburg, Winnsboro, North, Columbia, Saluda, Newberry, Waynesboro, St. Matthews, Holly Hill, Ridge Spring, Lugoff, Blackville, Barnwell, Cayce, Winnsboro Mills, West Columbia, Bamberg, Lexington, Augusta, Seven Oaks, Lancaster Mill, Red Bank, Johnston, Pageland, Oak Grove, North Augusta, Denmark, Aiken, Elgin, Summerton, Edgefield, Mccormick, Evans, Indian Land, Thomson, Martinez, Manning, Cheraw, Camden, Williston, and Lincolnton 1042 AM EDT Sun Jun 20 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY MORNING... The Flash Flood Watch continues for * Portions of east central Georgia and central South Carolina, including the following areas, in east central Georgia, Burke, Columbia, Lincoln, McDuffie and Richmond. In central South Carolina, Aiken, Bamberg, Barnwell, Calhoun, Central Orangeburg, Chesterfield, Clarendon, Edgefield, Fairfield, Kershaw, Lee, Lexington, McCormick, Newberry, Northern Lancaster, Northwestern Orangeburg, Richland, Saluda, Southeastern Orangeburg, Southern Lancaster and Sumter. * Through Monday morning. * Bands of heavy rain associated with Tropical Depression Claudette will cross the area today and tonight. Training cells could produce areas of heavy rainfall and the potential for flash flooding. Rainfall totals of 1-3 inches, with isolated higher amounts, are likely across eastern Georgia and central South Carolina. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ GPL
121 WGUS62 KCAE 202323 FFACAE Flood Watch National Weather Service Columbia SC 723 PM EDT Sun Jun 20 2021 GAZ040-063>065-077-SCZ016-018-020>022-025>031-035-037-038-041-115- 116-135>137-210030- /O.CAN.KCAE.FF.A.0003.000000T0000Z-210621T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Lincoln-McDuffie-Columbia-Richmond-Burke-Chesterfield-McCormick- Newberry-Fairfield-Kershaw-Edgefield-Saluda-Lexington-Richland-Lee- Aiken-Sumter-Barnwell-Calhoun-Clarendon-Bamberg-Northern Lancaster- Southern Lancaster-Northwestern Orangeburg-Central Orangeburg- Southeastern Orangeburg- Including the cities of Lancaster, Bishopville, Hephzibah, Sumter, Orangeburg, Winnsboro, North, Columbia, Saluda, Newberry, Waynesboro, St. Matthews, Holly Hill, Ridge Spring, Lugoff, Blackville, Barnwell, Cayce, Winnsboro Mills, West Columbia, Bamberg, Lexington, Augusta, Seven Oaks, Lancaster Mill, Red Bank, Johnston, Pageland, Oak Grove, North Augusta, Denmark, Aiken, Elgin, Summerton, Edgefield, Mccormick, Evans, Indian Land, Thomson, Martinez, Manning, Cheraw, Camden, Williston, and Lincolnton 723 PM EDT Sun Jun 20 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of east central Georgia and central South Carolina, including the following areas, in east central Georgia, Burke, Columbia, Lincoln, McDuffie and Richmond. In central South Carolina, Aiken, Bamberg, Barnwell, Calhoun, Central Orangeburg, Chesterfield, Clarendon, Edgefield, Fairfield, Kershaw, Lee, Lexington, McCormick, Newberry, Northern Lancaster, Northwestern Orangeburg, Richland, Saluda, Southeastern Orangeburg, Southern Lancaster and Sumter has been cancelled. The Flood Watch is cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ CRL
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 1:18 PM EDT | Special Weather Statement | CAE | Edgefield | 42 min |
| Jun 20, 1:35 PM EDT | Special Weather Statement | CAE | Aiken | 25 min |
| Jun 20, 1:52 PM EDT | Areal Flood Advisory | CAE | Aiken, Fairfield, Kershaw, Lexington, Newberry, Richland | 113 min |
| Jun 20, 2:18 PM EDT | Special Weather Statement | CAE | Aiken | 27 min |
| Jun 20, 2:25 PM EDT | Tornado Warning | CAE | Aiken, Lexington, Saluda | 35 min |
| Jun 20, 3:13 PM EDT | Special Weather Statement | CAE | Calhoun, Lexington | 47 min |
| Jun 20, 3:33 PM EDT | Areal Flood Advisory | CAE | Aiken, Fairfield, Kershaw, Lexington, Newberry, Richland and 1 more | 117 min |
| Jun 20, 3:49 PM EDT | Special Weather Statement | CAE | Lexington, Richland | 26 min |
| Jun 20, 4:04 PM EDT | Flash Flood Warning | CAE | Calhoun, Fairfield, Kershaw, Lexington, Newberry, Richland | 3 hr |
| Jun 20, 4:16 PM EDT | Special Weather Statement | CAE | Richland | 44 min |
| Jun 20, 4:34 PM EDT | Special Weather Statement | CAE | Calhoun, Orangeburg | 41 min |
| Jun 20, 5:03 PM EDT | Special Weather Statement | CAE | Kershaw | 27 min |
| Jun 20, 5:10 PM EDT | Areal Flood Advisory | CAE | Fairfield, Kershaw, Lancaster | 3 hr |
| Jun 20, 5:29 PM EDT | Special Weather Statement | CAE | Clarendon, Lee, Sumter | 46 min |
| Jun 20, 5:35 PM EDT | Special Weather Statement | CAE | Kershaw, Lancaster | 55 min |
| Jun 20, 6:06 PM EDT | Areal Flood Advisory | CAE | Chesterfield, Kershaw, Lancaster | 3 hr |
| Jun 20, 6:31 PM EDT | Special Weather Statement | CAE | Chesterfield | 59 min |
Nearby
Flash Flood Watches in South Carolina, 2021Flash Flood Watches in Georgia, 2021Every flash flood watch in 2021
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.