Alert archive / South Carolina / Flash Flood Warnings in 2018
Flash Flood Warning 14, NWS Columbia, SC
NWS Columbia, SC issued this flash flood warning at Nov 12, 2018, 10:50 PM EST for Lexington County, Richland County, South Carolina. It was in force for 115 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
- Nov 12, 2018, 10:50 PM EST (03:50 UTC)
- Expired
- Nov 13, 2018, 12:45 AM EST
- In force
- 115 min
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lexington County, SC, Richland County, SC
The radar
The Columbia radar (KCAE), 3 km from the middle of the area, began a volume at 03:52 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, 3.8 hours before the alert went out and 259 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 414 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 736 m²/s²
- 0-3 km storm-relative helicity
- 1367 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Columbia, SC wrote its last area forecast discussion before this flash flood warning went out at Nov 12, 9:22 PM EST, 1 hour 28 minutes earlier.
Area forecast discussion, Nov 12, 9:22 PM EST, 1 hour 28 minutes before
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</html>The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 12, 9:34 PM EST | Areal Flood Advisory | CAE | Aiken, Lexington, Richland | 116 min |
| Nov 13, 12:07 AM EST | Areal Flood Advisory | CAE | Aiken, Calhoun, Chesterfield, Kershaw, Lee, Lexington and 3 more | 113 min |
| Nov 13, 4:48 AM EST | River Flood Warning | CAE | Chesterfield, Marlboro | 6 days |
| Nov 13, 8:05 AM EST | Dense Fog Advisory | CAE | Aiken, Bamberg, Barnwell, Edgefield, McCormick | 115 min |
Nearby
Flash Flood Warnings in South Carolina, 2018Every flash flood warning 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.