Alert archive / South Carolina / Flash Flood Warnings in 2014

Flash Flood Warning 16, NWS Columbia, SC

September 19, 2014Chesterfield County, Lancaster County, South Carolina

NWS Columbia, SC issued this flash flood warning at Sep 19, 2014, 2:03 AM EDT for Chesterfield County, Lancaster County, South Carolina. It was in force for 117 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
Sep 19, 2014, 2:03 AM EDT (06:03 UTC)
Expired
Sep 19, 2014, 4:00 AM EDT
In force
117 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon
Flood severity
None

Counties Chesterfield County, SC, Lancaster County, SC

The radar

The Columbia radar (KCAE), 101 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 6.1 hours before the alert went out and 165 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 00:00Z on 2014-09-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 162 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 00:00Z on 2014-09-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.19395878Sfc1 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
162 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1186 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
63 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
Sep 19, 1:40 AM EDTAreal Flood AdvisoryCAEChesterfield, Lancaster110 min
Sep 19, 3:56 AM EDTFlash Flood WarningCAELancaster2 hr
Sep 19, 4:46 AM EDTAreal Flood AdvisoryCAEFairfield, Kershaw119 min
Sep 19, 7:57 AM EDTSpecial Weather StatementCAELexington48 min
Sep 19, 9:28 AM EDTSpecial Weather StatementCAEAiken47 min
Sep 19, 9:37 AM EDTAreal Flood WarningCAELancaster83 min
Sep 19, 9:38 AM EDTSpecial Weather StatementCAEBarnwell37 min

Nearby

Flash Flood Warnings in South Carolina, 2014Every flash flood warning in 2014

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.