Alert archive / South Carolina / Flash Flood Warnings in 2016

Flash Flood Warning 13, NWS Columbia, SC

October 8, 20166 counties in South Carolina

NWS Columbia, SC issued this flash flood warning at Oct 8, 2016, 2:56 AM EDT for 6 counties in 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: Oct 8, 2016, 2:56 AM EDT (06:56 UTC)
Expired: Oct 8, 2016, 9:00 AM EDT
In force: 6 hr
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Flood severity: None

Counties Bamberg County, SC, Calhoun County, SC, Clarendon County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 51 km from the middle of the area, began a volume at 06:58 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

Charleston AFB, SC (KCHS), launched 00:00Z, 6.9 hours before the alert went out and 106 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 248 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 569 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 306 m²/s²
0-3 km storm-relative helicity: 345 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 7.6

Open this sounding in Storm Lab

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 Oct 7, 7:47 PM EDT, 7 hours 9 minutes earlier.

Area forecast discussion, Oct 7, 7:47 PM EDT, 7 hours 9 minutes before

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Hazardous weather outlook, Oct 7, 12:23 PM EDT, 14 hours 33 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 8, 12:27 AM EDT	Areal Flood Advisory	CAE	Bamberg, Barnwell, Calhoun, Clarendon, Orangeburg, Sumter	6 hr
Oct 8, 3:09 AM EDT	Areal Flood Advisory	CAE	Aiken, Calhoun, Edgefield, Kershaw, Lee, Lexington and 3 more	4 hr
Oct 8, 6:08 AM EDT	River Flood Warning	CAE	Orangeburg	5 days
Oct 8, 8:10 AM EDT	Areal Flood Warning	CAE	Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Edgefield and 8 more	3 hr
Oct 8, 8:19 AM EDT	Flash Flood Warning	CAE	Bamberg, Calhoun, Clarendon, Lee, Orangeburg, Richland and 1 more	6 hr
Oct 8, 11:11 AM EDT	Areal Flood Warning	CAE	Calhoun, Chesterfield, Fairfield, Kershaw, Lancaster, Lee and 2 more	2 hr
Oct 8, 4:53 PM EDT	River Flood Warning	CAE	Chesterfield, Marlboro	3 days

Nearby

Flash Flood Warnings in South Carolina, 2016 Every flash flood warning in 2016

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.