Alert archive / Georgia / Flash Flood Warnings in 2012
Flash Flood Warning 11, NWS Columbia, SC
NWS Columbia, SC issued this flash flood warning at Aug 11, 2012, 10:21 AM EDT for Columbia County, Richmond County, Georgia. It was in force for 84 min. 5 reports 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
- Aug 11, 2012, 10:21 AM EDT (14:21 UTC)
- Expired
- Aug 11, 2012, 11:45 AM EDT
- In force
- 84 min
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Columbia County, GA, Richmond County, GA
The radar
The Columbia radar (KCAE), 103 km from the middle of the area, began a volume at 14:23 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 |
|---|---|---|---|
| Aug 11, 11:00 AM EDT | FLASH FLOOD | 3 W Grovetown, GA | LAW ENFORCEMENT REPORT OF FLASH FLOOD HARLEM-GROVETOWN ROAD NEAR LOUISVILLE ROAD. |
| Aug 11, 11:00 AM EDT | FLASH FLOOD | 4 Sw Evans, GA | LAW ENFORCEMENT REPORT OF FLOODING AT JOHN DEERE PARKWAY AND HORIZON SOUTH. |
| Aug 11, 11:15 AM EDT | FLASH FLOOD | 1 Ene Augusta, GA | LAW ENFORCEMENT REPORT OF FLASH FLOODING AT 1000 LANEY WALKER BLVD. |
| Aug 11, 11:15 AM EDT | FLASH FLOOD | 3 E Augusta, GA | LAW ENFORCEMENT REPORT OF FLASH FLOODING AT 225 MAGNOLIA AVENUE IN AUGUSTA. |
| Aug 11, 11:15 AM EDT | FLASH FLOOD | 3 E Augusta, GA | LAW ENFORCEMENT REPORT OF FLASH FLOODING EAST HALL STREET IN AUGUSTA. |
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 12:00Z, 2.4 hours before the alert went out and 200 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.
- Mixed-layer CAPE
- 678 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 894 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
010
WGUS52 KCAE 111421
FFWCAE
GAC073-245-111545-
/O.NEW.KCAE.FF.W.0011.120811T1421Z-120811T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
1021 AM EDT SAT AUG 11 2012
THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHERN COLUMBIA COUNTY IN EAST CENTRAL GEORGIA...
THIS INCLUDES THE CITIES OF...MARTINEZ...GROVETOWN...EVANS...
RICHMOND COUNTY IN EAST CENTRAL GEORGIA...
THIS INCLUDES THE CITIES OF...FORT GORDON...AUGUSTA...
* UNTIL 1145 AM EDT
* AT 1015 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HARLEM
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 2 INCHES ARE POSSIBLE IN THE WARNED
AREA.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. TURN AROUND...DONT DROWN.
REPORT FLOODING TO YOUR COUNTY SHERIFF...OR CALL THE NATIONAL WEATHER
SERVICE...TOLL FREE 1 877 6 3 3...6 7 7 2.
&&
LAT...LON 3361 8215 3359 8214 3360 8210 3356 8204
3349 8199 3346 8193 3344 8191 3342 8193
3341 8191 3341 8195 3337 8193 3336 8195
3333 8190 3328 8215 3330 8218 3327 8224
3349 8239
$$
TTHThe office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 10:03 AM EDT | Areal Flood Advisory | CAE | Columbia, McDuffie, Richmond | 117 min |
| Aug 11, 3:27 PM EDT | Special Weather Statement | CAE | Burke, Columbia, McDuffie, Richmond | 63 min |
| Aug 11, 4:07 PM EDT | Areal Flood Advisory | CAE | Columbia, Richmond | 113 min |
Nearby
Flash Flood Warnings in Georgia, 2012Every flash flood warning in 2012
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.