Alert archive / South Carolina / Flash Flood Warnings in 2015

Flash Flood Warning 4, NWS Columbia, SC

June 4, 2015Lexington County, Richland County, South Carolina

NWS Columbia, SC issued this flash flood warning at Jun 4, 2015, 12:23 AM EDT for Lexington County, Richland County, South Carolina. It was in force for 2 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 4, 2015, 12:23 AM EDT (04:23 UTC)
Expired: Jun 4, 2015, 2:30 AM EDT
In force: 2 hr
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), 12 km from the middle of the area, began a volume at 04:26 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.

What was reported inside it

Time	Report	Where	Remark
Jun 4, 1:00 AM EDT	FLASH FLOOD	1 Sse Columbia, SC	USGS WEBCAM SHOWED ROADWAY FLOODING AT MAIN STREET AND WHALEY STREET.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 4.4 hours before the alert went out and 154 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: 627 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 775 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

031 
WGUS52 KCAE 040423
FFWCAE
SCC063-079-040630-
/O.NEW.KCAE.FF.W.0004.150604T0423Z-150604T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
1223 AM EDT THU JUN 4 2015

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN LEXINGTON COUNTY IN CENTRAL SOUTH CAROLINA...
  CENTRAL RICHLAND COUNTY IN CENTRAL SOUTH CAROLINA...

* UNTIL 230 AM EDT
    
* AT 1222 AM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA. FLOODING IN FIVE POINTS IS 
  EXPECTED. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  COLUMBIA...FOREST ACRES AND FIVE POINTS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...ALSO USE WWW.FACEBOOK.COM/NWSCOLUMBIA AND EMAIL
CAEWX@NOAA.GOV TO RELAY SEVERE WEATHER REPORTS.
&&

LAT...LON 3402 8098 3397 8101 3397 8104 3403 8103

$$
AWP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 8:23 PM EDT	Areal Flood Advisory	CAE	Edgefield, McCormick	3 hr
Jun 3, 8:56 PM EDT	Special Weather Statement	CAE	Edgefield, McCormick	64 min
Jun 3, 11:31 PM EDT	Areal Flood Advisory	CAE	Newberry, Saluda	119 min
Jun 3, 11:42 PM EDT	Flash Flood Warning	CAE	Newberry, Saluda	3 hr
Jun 3, 11:54 PM EDT	Areal Flood Advisory	CAE	Calhoun, Lexington, Richland	2 hr
Jun 4, 12:34 AM EDT	Flash Flood Warning	CAE	Aiken, Edgefield, Lexington, McCormick, Saluda	116 min
Jun 4, 2:22 AM EDT	Flash Flood Warning	CAE	Aiken, Calhoun, Kershaw, Lexington, Orangeburg, Richland and 1 more	3 hr
Jun 4, 3:31 AM EDT	Areal Flood Advisory	CAE	Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 4 more	119 min
Jun 4, 3:49 AM EDT	Areal Flood Advisory	CAE	Aiken, Edgefield, Fairfield, Kershaw, Lancaster, Lexington and 4 more	116 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.