Alert archive / South Carolina / Flash Flood Warnings in 2020
Flash Flood Warning 3, NWS Columbia, SC
NWS Columbia, SC issued this flash flood warning at May 28, 2020, 8:59 PM EDT for Chesterfield County, Kershaw County, Lancaster County, South Carolina. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 28, 2020, 8:59 PM EDT (00:59 UTC)
- Expired
- May 28, 2020, 11:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Chesterfield County, SC, Kershaw County, SC, Lancaster County, SC
The radar
The Columbia radar (KCAE), 89 km from the middle of the area, began a volume at 01:00 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
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.0 hours before the alert went out and 178 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
- 1160 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 803 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 8:01 PM EDT | Severe Thunderstorm Warning | CAE | Chesterfield | 44 min |
| May 28, 8:36 PM EDT | Flash Flood Warning | CAE | Chesterfield | 3 hr |
| May 29, 7:42 AM EDT | Special Weather Statement | CAE | Kershaw | 33 min |
| May 29, 8:04 AM EDT | Flash Flood Watch | CAE | Chesterfield, Kershaw, Lancaster, Lee, Sumter | 16 hr |
| May 29, 9:15 AM EDT | River Flood Warning | CAE | Calhoun, Lexington, Richland | 61 hr |
| May 29, 11:03 AM EDT | Areal Flood Advisory | CAE | Calhoun, Lexington, Richland | 3 hr |
| May 29, 11:42 AM EDT | Special Weather Statement | CAE | Calhoun, Kershaw, Richland, Sumter | 48 min |
| May 29, 11:54 AM EDT | Severe Thunderstorm Warning | CAE | Lancaster | 36 min |
| May 29, 12:31 PM EDT | Areal Flood Advisory | CAE | Lancaster | 3 hr |
| May 29, 12:40 PM EDT | Special Weather Statement | CAE | Lee, Sumter | 35 min |
| May 29, 12:54 PM EDT | Severe Thunderstorm Warning | CAE | Lee | 36 min |
| May 29, 5:14 PM EDT | Areal Flood Advisory | CAE | Lee, Sumter | 2 hr |
| May 29, 5:43 PM EDT | Areal Flood Advisory | CAE | Clarendon | 2 hr |
| May 29, 6:12 PM EDT | Special Weather Statement | CAE | Saluda | 48 min |
| May 29, 6:27 PM EDT | Areal Flood Advisory | CAE | Clarendon, Lee, Sumter | 2 hr |
| May 29, 7:03 PM EDT | Special Weather Statement | CAE | Saluda | 42 min |
| May 29, 7:08 PM EDT | Severe Thunderstorm Warning | CAE | Lexington, Newberry, Saluda | 37 min |
| May 29, 7:45 PM EDT | Severe Thunderstorm Warning | CAE | Lexington, Newberry, Richland | 31 min |
Nearby
Flash Flood Warnings in South Carolina, 2020Every flash flood warning in 2020
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.