Alert archive / South Carolina / Flash Flood Warnings in 2015

Flash Flood Warning 13, NWS Columbia, SC

September 5, 2015Lexington County, Richland County, South Carolina

NWS Columbia, SC issued this flash flood warning at Sep 5, 2015, 1:21 AM EDT for Lexington County, Richland County, South Carolina. It was in force for 114 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 5, 2015, 1:21 AM EDT (05:21 UTC)
Expired: Sep 5, 2015, 3:15 AM EDT
In force: 114 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Flood severity: None

Counties Lexington County, SC, Richland County, SC

The radar

The Columbia radar (KCAE), 3 km from the middle of the area, began a volume at 05:20 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, 5.4 hours before the alert went out and 259 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: 794 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 1236 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: -25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Sep 5, 12:04 AM EDT, 1 hour 17 minutes earlier.

Area forecast discussion, Sep 5, 12:04 AM EDT, 1 hour 17 minutes before

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Hazardous weather outlook, Sep 4, 3:44 PM EDT, 9 hours 37 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
344 PM EDT FRI SEP 4 2015

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-051945-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-
BAMBERG-
344 PM EDT FRI SEP 4 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MIDLANDS OF SOUTH CAROLINA
AND THE CENTRAL SAVANNAH RIVER AREA OF GEORGIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED THUNDERSTORMS WILL CONTINUE INTO TONIGHT. A FEW OF THE
THUNDERSTORMS MAY BECOME STRONG TO SEVERE WITH DAMAGING WIND
GUSTS AND LARGE HAIL.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Sep 4, 10:59 PM EDT, 2 hours 22 minutes before

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Special weather statement, Sep 4, 11:27 PM EDT, 1 hour 54 minutes before

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Local storm report, Sep 5, 12:02 AM EDT, 1 hour 19 minutes before

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Local storm report, Sep 5, 12:29 AM EDT, 52 minutes before

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Special weather statement, Sep 5, 12:38 AM EDT, 43 minutes before

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Local storm report, Sep 5, 12:40 AM EDT, 41 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
Sep 4, 10:47 PM EDT	Special Weather Statement	CAE	Saluda	58 min
Sep 4, 10:49 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield, Saluda	56 min
Sep 4, 10:59 PM EDT	Special Weather Statement	CAE	Clarendon, Lee, Sumter	46 min
Sep 4, 11:10 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Lee, Sumter	65 min
Sep 4, 11:27 PM EDT	Special Weather Statement	CAE	McCormick	63 min
Sep 4, 11:56 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lee, Richland, Sumter	49 min
Sep 5, 12:38 AM EDT	Special Weather Statement	CAE	Lexington, Richland	52 min
Sep 5, 1:00 AM EDT	Areal Flood Advisory	CAE	Lexington, Richland	2 hr
Sep 5, 1:47 AM EDT	Special Weather Statement	CAE	Lexington	58 min
Sep 5, 6:53 PM EDT	Special Weather Statement	CAE	Chesterfield	52 min
Sep 5, 2:38 PM EDT	Severe Thunderstorm Warning	CAE	Burke, Richmond	67 min
Sep 5, 3:13 PM EDT	Severe Thunderstorm Warning	CAE	Burke	47 min

Nearby

Flash Flood Warnings in South Carolina, 2015 Every 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.