Alert archive / South Carolina / Flash Flood Warnings in 2022

Flash Flood Warning 4, NWS Columbia, SC

May 21, 2022Richland County, South Carolina

NWS Columbia, SC issued this flash flood warning at May 21, 2022, 2:09 PM EDT for Richland County, South Carolina. It was in force for 2 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 21, 2022, 2:09 PM EDT (18:09 UTC)
Expired
May 21, 2022, 4:15 PM EDT
In force
2 hr
Issued by
NWS Columbia, SC
Area
Storm-based polygon
Flood severity
None

County Richland County, SC

The radar

The Columbia radar (KCAE), 21 km from the middle of the area, began a volume at 18:12 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 12:00Z, 6.2 hours before the alert went out and 246 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2022-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 908 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2022-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -99 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
908 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
1340 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-99 m²/s²
0-3 km storm-relative helicity
-94 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 12:13 PM EDTSpecial Weather StatementCAEOrangeburg47 min
May 21, 12:39 PM EDTSevere Thunderstorm WarningCAELexington, Newberry, Richland, Saluda36 min
May 21, 12:39 PM EDTSevere Thunderstorm WarningCAECalhoun, Clarendon, Orangeburg36 min
May 21, 1:19 PM EDTSpecial Weather StatementCAECalhoun, Richland26 min
May 21, 1:22 PM EDTSpecial Weather StatementCAEFairfield23 min
May 21, 1:30 PM EDTSpecial Weather StatementCAEFlorence30 min
May 21, 1:38 PM EDTSpecial Weather StatementCAENewberry37 min
May 21, 1:44 PM EDTSevere Thunderstorm WarningCAEFairfield, Newberry31 min
May 21, 1:46 PM EDTSevere Thunderstorm WarningCAEKershaw, Lexington, Richland29 min
May 21, 1:49 PM EDTSpecial Weather StatementCAELexington26 min
May 21, 2:03 PM EDTAreal Flood AdvisoryCAECalhoun, Lexington, Richland87 min
May 21, 2:12 PM EDTSpecial Weather StatementCAEKershaw33 min
May 21, 2:19 PM EDTSpecial Weather StatementCAELexington26 min
May 21, 2:25 PM EDTSevere Thunderstorm WarningCAEFairfield, Kershaw, Lancaster35 min
May 21, 3:01 PM EDTSpecial Weather StatementCAELancaster44 min
May 21, 3:19 PM EDTSpecial Weather StatementCAEChesterfield56 min
May 21, 3:31 PM EDTSpecial Weather StatementCAEChesterfield44 min
May 21, 3:46 PM EDTSpecial Weather StatementCAEBarnwell29 min
May 21, 4:29 PM EDTSpecial Weather StatementCAEAiken31 min
May 21, 4:55 PM EDTSpecial Weather StatementCAEClarendon35 min
May 21, 5:27 PM EDTSpecial Weather StatementCAEClarendon48 min
May 21, 5:32 PM EDTSpecial Weather StatementCAEBamberg43 min
May 21, 5:40 PM EDTSpecial Weather StatementCAEOrangeburg35 min
May 21, 6:15 PM EDTSpecial Weather StatementCAEOrangeburg45 min
May 21, 3:46 PM EDTSpecial Weather StatementCAERichmond29 min
May 21, 4:39 PM EDTSpecial Weather StatementCAEColumbia51 min

Nearby

Flash Flood Warnings in South Carolina, 2022Every flash flood warning in 2022

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.