Alert archive / Georgia / Flash Flood Warnings in 2013

Flash Flood Warning 7, NWS Columbia, SC

July 7, 2013Columbia County, McDuffie County, Georgia; Edgefield County, McCormick County, South Carolina

NWS Columbia, SC issued this flash flood warning at Jul 7, 2013, 11:56 PM EDT for Columbia County, McDuffie County, Georgia; Edgefield County, McCormick County, South Carolina. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 7, 2013, 11:56 PM EDT (03:56 UTC)
Expired
Jul 8, 2013, 2:45 AM EDT
In force
3 hr
Issued by
NWS Columbia, SC
Area
Storm-based polygon
Flood severity
None

Counties Columbia County, GA, McDuffie County, GA, Edgefield County, SC, McCormick County, SC

The radar

The Columbia radar (KCAE), 107 km from the middle of the area, began a volume at 03:56 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 3.9 hours before the alert went out and 214 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, Peachtre/Fal Fld, GA at 00:00Z on 2013-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 523 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2013-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.193958Sfc1 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
523 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
806 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

985 
WGUS52 KCAE 080356
FFWCAE
GAC073-189-SCC037-065-080645-
/O.NEW.KCAE.FF.W.0007.130708T0356Z-130708T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
1156 PM EDT SUN JUL 7 2013

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EDGEFIELD COUNTY IN CENTRAL SOUTH CAROLINA...
  SOUTHEASTERN MCCORMICK COUNTY IN CENTRAL SOUTH CAROLINA...
  COLUMBIA COUNTY IN EAST CENTRAL GEORGIA...
  THIS INCLUDES THE CITIES OF...MARTINEZ...GROVETOWN...EVANS...
  MCDUFFIE COUNTY IN EAST CENTRAL GEORGIA...
  THIS INCLUDES THE CITY OF THOMSON...

* UNTIL 245 AM EDT

* AT 1143 PM EDT...RADAR INDICATED HEAVY RAIN IN PARTS OF
  EDGEFIELD...MCCORMICK...COLUMBIA...AND MDDUFFIE COUNTIES. 
  AMOUNTS OF 3 TO 6 INCHES OF RAIN WILL OCCUR IN SOME AREAS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
  TRENTON...DEARING...HARLEM...EVANS...AND LEWISTON.

DO NOT ATTEMPT TO DRIVE ON FLOODED ROADS. IT TAKES LITTLE
WATER TO MOVE A VEHICLE OFF THE ROAD AND INTO DEEPER WATER.
NOTE THAT IT IS HARDER TO RECOGNIZE THE DANGER AT NIGHT.
ON FOOT...KEEP AWAY FROM STORM DRAINS.

REPORT FLOODING TO YOUR COUNTY SHERIFF...OR USE
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.COLUMBIA.GOV TO RELAY
SEVERE WEATHER REPORTS.

LAT...LON 3369 8228 3369 8223 3372 8224 3395 8189
      3390 8187 3386 8184 3381 8166 3331 8238
      3334 8245 3335 8255 3341 8255 3348 8260

$$
1 follow-up statement
774 
WGUS72 KCAE 080434
FFSCAE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
1234 AM EDT MON JUL 8 2013

GAC073-189-SCC037-065-080645-
/O.CON.KCAE.FF.W.0007.000000T0000Z-130708T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCDUFFIE GA-COLUMBIA GA-EDGEFIELD SC-MCCORMICK SC-
1234 AM EDT MON JUL 8 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 AM EDT FOR
MCCORMICK...EDGEFIELD...COLUMBIA AND MCDUFFIE COUNTIES...

AT 1229 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN IN AN AREA
EXTENDING FROM THE TRENTON AREA OF EDGEFIELD COUNTY...SOUTHWESTWARD
TO AROUND MERIWETHER IN MCCORMICK COUNTY TO AROUND
DEARING AND HARLEM IN MCDUFFIE AND COLUMBIA COUNTIES.

RAINFALL AMOUNTS OF 3 TO 6 INCHES WILL OCCUR IN PART OF THIS AREA
RESULTING IN SIGNIFICANT FLOODING. 

DO NOT ATTEMPT TO DRIVE ON FLOODED ROADS. IT TAKES LITTLE
WATER TO MOVE A VEHICLE OFF THE ROAD AND INTO DEEPER WATER.
NOTE THAT IT IS HARDER TO RECOGNIZE THE DANGER AT NIGHT.
ON FOOT...KEEP AWAY FROM STORM DRAINS.

REPORT FLOODING TO YOUR COUNTY SHERIFF...OR USE
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.COLUMBIA.GOV TO RELAY
SEVERE WEATHER REPORTS.

LAT...LON 3369 8228 3369 8223 3372 8224 3395 8189
      3390 8187 3386 8184 3381 8166 3331 8238
      3334 8245 3335 8255 3341 8255 3348 8260

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 11:38 PM EDTAreal Flood AdvisoryCAEColumbia, McDuffie112 min
Jul 8, 3:36 PM EDTAreal Flood AdvisoryCAERichmond54 min
Jul 8, 4:15 PM EDTAreal Flood AdvisoryCAERichmond2 hr
Jul 8, 4:48 PM EDTSpecial Weather StatementCAERichmond27 min
Jul 8, 4:55 PM EDTAreal Flood AdvisoryCAERichmond65 min
Jul 8, 5:39 PM EDTAreal Flood AdvisoryCAEBurke51 min
Jul 7, 8:50 PM EDTSpecial Weather StatementCAEFairfield, Lancaster, Lexington, Newberry, Saluda55 min
Jul 7, 9:13 PM EDTAreal Flood AdvisoryCAEFairfield, Lexington, Newberry, Richland, Saluda62 min
Jul 8, 2:07 PM EDTAreal Flood AdvisoryCAEAiken, Lexington53 min
Jul 8, 2:48 PM EDTAreal Flood AdvisoryCAEAiken, Calhoun, Lexington, Richland117 min
Jul 8, 3:08 PM EDTSpecial Weather StatementCAERichland22 min
Jul 8, 3:28 PM EDTSevere Thunderstorm WarningCAERichland47 min
Jul 8, 4:16 PM EDTSpecial Weather StatementCAEKershaw44 min
Jul 8, 4:19 PM EDTSpecial Weather StatementCAEAiken41 min
Jul 8, 4:30 PM EDTAreal Flood AdvisoryCAEChesterfield, Kershaw, Lee60 min
Jul 8, 4:34 PM EDTAreal Flood AdvisoryCAEAiken116 min

Nearby

Flash Flood Warnings in Georgia, 2013Flash Flood Warnings in South Carolina, 2013Every flash flood warning in 2013

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.