Alert archive / South Carolina / Flash Flood Warnings in 2010

Flash Flood Warning 13, NWS Charleston, SC

September 29, 2010Berkeley County, Charleston County, South Carolina

NWS Charleston, SC issued this flash flood warning at Sep 29, 2010, 8:41 PM EDT for Berkeley County, Charleston County, South Carolina. It was in force for 6 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
Sep 29, 2010, 8:41 PM EDT (00:41 UTC)
Expired
Sep 30, 2010, 2:29 AM EDT
In force
6 hr
Issued by
NWS Charleston, SC
Area
Storm-based polygon
Flood severity
None

Counties Berkeley County, SC, Charleston County, SC

The radar

The Charleston,SC radar (KCLX), 108 km from the middle of the area, began a volume at 00:42 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, 0.7 hours before the alert went out and 345 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 2010-09-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2010-09-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 179 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
489 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
179 m²/s²
0-3 km storm-relative helicity
216 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 30, 12:23 AM EDTSpecial Marine WarningCHS52 min
Sep 29, 8:11 PM EDTAreal Flood AdvisoryCHSBerkeley, Charleston94 min
Sep 29, 10:26 PM EDTAreal Flood AdvisoryCHSBerkeley, Charleston94 min
Sep 29, 11:47 PM EDTAreal Flood AdvisoryCHSBerkeley, Charleston, Dorchester118 min
Sep 30, 12:36 AM EDTSpecial Weather StatementCHSGeorgetown39 min
Sep 30, 1:06 AM EDTSpecial Weather StatementCHSGeorgetown39 min

Nearby

Flash Flood Warnings in South Carolina, 2010Every flash flood warning in 2010

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.