Alert archive / South Carolina / Tornado Warnings in 2018
Tornado Warning 9, NWS Columbia, SC
NWS Columbia, SC issued this tornado warning at Oct 10, 2018, 11:54 PM EDT for 4 counties in South Carolina. It was in force for 21 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Oct 10, 2018, 11:54 PM EDT (03:54 UTC)
- Expired
- Oct 11, 2018, 12:15 AM EDT
- In force
- 21 min
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Calhoun County, SC, Lexington County, SC, Orangeburg County, SC, Richland County, SC
The radar
The Columbia radar (KCAE), 27 km from the middle of the area, began a volume at 03:56 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Oct 10, 11:38 PM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 00:00Z, 3.9 hours before the alert went out and 129 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
- 846 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 746 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.6
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 10, 11:26 PM EDT | Tornado Warning | CAE | Orangeburg | 34 min |
| Oct 11, 2:06 AM EDT | Areal Flood Advisory | CAE | Calhoun, Lexington, Richland | 114 min |
| Oct 11, 2:12 AM EDT | Areal Flood Advisory | CAE | Calhoun, Orangeburg, Richland | 2 hr |
| Oct 11, 2:37 AM EDT | Tornado Warning | CAE | Newberry | 23 min |
| Oct 11, 4:06 AM EDT | Areal Flood Advisory | CAE | Aiken | 114 min |
| Oct 11, 4:15 AM EDT | Tornado Warning | CAE | Calhoun, Richland | 30 min |
| Oct 11, 5:13 AM EDT | Areal Flood Advisory | CAE | Aiken, Calhoun, Edgefield, Fairfield, Lexington, Newberry and 3 more | 2 hr |
| Oct 11, 6:10 AM EDT | Flash Flood Warning | CAE | Lexington, Richland | 4 hr |
| Oct 11, 7:24 AM EDT | Areal Flood Advisory | CAE | Aiken, Calhoun, Fairfield, Lexington, Newberry, Orangeburg and 3 more | 2 hr |
| Oct 11, 7:29 AM EDT | Areal Flood Advisory | CAE | Fairfield, Kershaw, Lancaster, Lee, Richland, Sumter | 2 hr |
| Oct 11, 8:52 AM EDT | Areal Flood Advisory | CAE | Chesterfield, Kershaw, Lancaster | 3 hr |
| Oct 11, 10:18 AM EDT | Areal Flood Advisory | CAE | Lexington, Richland | 57 min |
| Oct 11, 12:06 PM EDT | Areal Flood Advisory | CAE | Calhoun, Fairfield, Kershaw, Lexington, Newberry, Richland | 114 min |
| Oct 11, 12:25 PM EDT | River Flood Advisory | CAE | Lexington, Richland | 55 hr |
| Oct 11, 2:08 PM EDT | River Flood Warning | CAE | Calhoun, Lexington, Richland | 5 days |
| Oct 11, 3:53 PM EDT | River Flood Warning | CAE | Calhoun, Richland | 4 days |
| Oct 11, 3:53 PM EDT | River Flood Warning | CAE | Chesterfield, Marlboro | 4 days |
| Oct 11, 5:23 PM EDT | Lake Wind Advisory | CAE | Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more | 3 hr |
Nearby
Tornado Warnings in South Carolina, 2018Every tornado warning in 2018Tornadoes in 2018
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.