Alert archive / South Carolina / Flash Flood Warnings in 2015

Flash Flood Warning 20, NWS Columbia, SC

October 3, 2015Calhoun County, Clarendon County, Orangeburg County, South Carolina

NWS Columbia, SC issued this flash flood warning at Oct 3, 2015, 9:14 AM EDT for Calhoun County, Clarendon County, Orangeburg County, South Carolina. It was in force for 4 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
Oct 3, 2015, 9:14 AM EDT (13:14 UTC)
Expired
Oct 3, 2015, 1:00 PM EDT
In force
4 hr
Issued by
NWS Columbia, SC
Area
Storm-based polygon
Flood severity
None

Counties Calhoun County, SC, Clarendon County, SC, Orangeburg County, SC

The radar

The Columbia radar (KCAE), 62 km from the middle of the area, began a volume at 13:17 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, 1.2 hours before the alert went out and 284 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 2015-10-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 joules per kilogram.LCLEL10008507005003002001001 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 2015-10-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 451 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
9 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
457 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
451 m²/s²
0-3 km storm-relative helicity
499 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
Oct 2, 10:31 PM EDTAreal Flood AdvisoryCAECalhoun, Chesterfield, Clarendon, Fairfield, Kershaw, Lancaster and 4 more6 hr
Oct 3, 2:36 AM EDTFlash Flood WarningCAEChesterfield6 hr
Oct 3, 4:07 AM EDTAreal Flood AdvisoryCAEAiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 11 more6 hr
Oct 3, 5:53 AM EDTRiver Flood AdvisoryCAELexington, Richland48 hr
Oct 3, 6:03 AM EDTRiver Flood WarningCAECalhoun, Lexington, Richland6 days
Oct 3, 7:10 AM EDTRiver Flood WarningCAEChesterfield, Marlboro4 days
Oct 3, 11:54 AM EDTRiver Flood WarningCAELexington, Richland6 days
Oct 3, 3:00 PM EDTFlash Flood WarningCAEClarendon, Sumter2 hr
Oct 3, 5:26 PM EDTAreal Flood AdvisoryCAECalhoun, Orangeburg109 min
Oct 3, 5:43 PM EDTAreal Flood AdvisoryCAEAiken, Calhoun, Lexington, Orangeburg2 hr
Oct 3, 6:21 PM EDTAreal Flood AdvisoryCAEClarendon114 min

Nearby

Flash Flood Warnings in South Carolina, 2015Every flash flood warning in 2015

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.