Alert archive / Georgia / Flash Flood Warnings in 2015

Flash Flood Warning 36, NWS Columbia, SC

December 30, 2015Lincoln County, Georgia; McCormick County, South Carolina

NWS Columbia, SC issued this flash flood warning at Dec 30, 2015, 10:33 AM EST for Lincoln County, Georgia; McCormick County, South Carolina. It was in force for 4 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: Dec 30, 2015, 10:33 AM EST (15:33 UTC)
Expired: Dec 30, 2015, 2:30 PM EST
In force: 4 hr
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Flood severity: None

Counties Lincoln County, GA, McCormick County, SC

The radar

The Greer radar (KGSP), 104 km from the middle of the area, began a volume at 15:37 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 12:00Z, 3.6 hours before the alert went out and 249 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: 610 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 734 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

148 
WGUS52 KCAE 301533
FFWCAE
GAC181-SCC065-301930-
/O.NEW.KCAE.FF.W.0036.151230T1533Z-151230T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
1033 AM EST WED DEC 30 2015

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN LINCOLN COUNTY IN EAST CENTRAL GEORGIA...
  MCCORMICK COUNTY IN CENTRAL SOUTH CAROLINA...

* UNTIL 230 PM EST
    
* AT 1032 AM EST...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO ONE INCH OF RAIN HAS
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MCCORMICK...LAKE STROM THURMOND...WILLINGTON AND MOUNT CARMEL. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

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 3396 8256 3402 8259 3405 8255 3407 8247
      3406 8233 3397 8230 3402 8225 3397 8218
      3399 8215 3398 8205 3394 8208 3393 8216
      3390 8215 3387 8217 3381 8259 3386 8257
      3387 8261 3397 8264

$$
MANNING

1 follow-up statement

393 
WGUS72 KCAE 301926
FFSCAE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
226 PM EST WED DEC 30 2015

GAC181-SCC065-301935-
/O.EXP.KCAE.FF.W.0036.000000T0000Z-151230T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LINCOLN GA-MCCORMICK SC-
226 PM EST WED DEC 30 2015

...THE FLASH FLOOD WARNING FOR NORTHWESTERN LINCOLN AND MCCORMICK
COUNTIES WILL EXPIRE AT 230 PM EST...

THE HEAVIEST RAIN HAS ENDED...AND SERIOUS FLOODING IS NO LONGER
EXPECTED TO POSE A THREAT. A FLOOD ADVISORY REMAINS IN EFFECT. 

LAT...LON 3396 8256 3402 8259 3405 8255 3407 8247
      3406 8233 3397 8230 3402 8225 3397 8218
      3399 8215 3398 8205 3394 8208 3393 8216
      3390 8215 3387 8217 3381 8259 3386 8257
      3387 8261 3397 8264

$$
MANNING

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 30, 9:04 AM EST	Areal Flood Advisory	CAE	Lincoln	116 min
Dec 30, 2:25 PM EST	Areal Flood Advisory	CAE	Lincoln	4 hr
Dec 30, 4:07 PM EST	Areal Flood Advisory	CAE	Columbia, Lincoln, McDuffie, Richmond	113 min
Dec 30, 5:53 PM EST	Areal Flood Advisory	CAE	Burke, Columbia, Lincoln, McDuffie, Richmond	3 hr
Dec 30, 10:57 AM EST	Special Weather Statement	CAE	Newberry	48 min
Dec 30, 11:09 AM EST	Flash Flood Warning	CAE	Newberry	4 hr
Dec 30, 11:43 AM EST	Flash Flood Warning	CAE	Fairfield, Lancaster	6 hr
Dec 30, 12:30 PM EST	Severe Thunderstorm Warning	CAE	Lancaster	45 min
Dec 30, 12:52 PM EST	Special Weather Statement	CAE	Kershaw	23 min
Dec 30, 1:05 PM EST	Severe Thunderstorm Warning	CAE	Chesterfield	40 min
Dec 30, 1:13 PM EST	Severe Thunderstorm Warning	CAE	Lancaster	32 min
Dec 30, 1:37 PM EST	Flash Flood Warning	CAE	Chesterfield	4 hr
Dec 30, 1:45 PM EST	Severe Thunderstorm Warning	CAE	Chesterfield	60 min
Dec 30, 2:02 PM EST	River Flood Warning	CAE	Lexington, Richland	4 days
Dec 30, 2:02 PM EST	River Flood Warning	CAE	Chesterfield, Marlboro	4 days
Dec 30, 2:02 PM EST	River Flood Warning	CAE	Newberry, Union	63 hr
Dec 30, 3:09 PM EST	Areal Flood Warning	CAE	Newberry	3 hr
Dec 30, 3:53 PM EST	Areal Flood Advisory	CAE	Aiken, Calhoun, Fairfield, Kershaw, Lexington, Richland	2 hr
Dec 30, 4:56 PM EST	Special Weather Statement	CAE	Lexington	49 min

Nearby

Flash Flood Warnings in Georgia, 2015 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.