Alert archive / South Carolina / Flash Flood Warnings in 2012
Flash Flood Warning 9, NWS Columbia, SC
NWS Columbia, SC issued this flash flood warning at Jul 31, 2012, 5:02 PM EDT for Lexington County, Richland County, South Carolina. It was in force for 34 min. 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 31, 2012, 5:02 PM EDT (21:02 UTC)
- Expired
- Jul 31, 2012, 5:36 PM EDT
- In force
- 34 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), 11 km from the middle of the area, began a volume at 21:02 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, 9.0 hours before the alert went out and 156 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
- 873 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 605 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
855 WGUS52 KCAE 312102 FFWCAE SCC063-079-312200- /O.NEW.KCAE.FF.W.0009.120731T2102Z-120731T2200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE COLUMBIA SC 502 PM EDT TUE JUL 31 2012 THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A * FLASH FLOOD WARNING FOR... EASTERN LEXINGTON COUNTY IN CENTRAL SOUTH CAROLINA... CENTRAL RICHLAND COUNTY IN CENTRAL SOUTH CAROLINA... THIS INCLUDES THE CITIES OF...FOREST ACRES...COLUMBIA... * UNTIL 600 PM EDT * AT 458 PM EDT...OVER THREE QUARTERS OF AN INCH OF RAIN HAS FALLEN DOWNTOWN COLUMBIA IN THE LAST HALF HOUR. THIS WILL CAUSE FLOODING IN POORLY DRAINED AREAS IN COLUMBIA...ESPECIALLY THE 5 POINTS AREA. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FIVE POINTS PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF THE FIVE POINTS AREA EXTENDING DOWNSTREAM ALONG ROCKY BRANCH CREEK. THIS INCLUDES MAXCY GREGG PARK...THE PICKENS BLOSSOM STREET INTERSECTION AND THE WHALEY MAIN STREET INTERSECTION. 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. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. 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 3403 8108 3406 8100 3398 8095 3396 8103 $$
1 follow-up statement
430 WGUS72 KCAE 312136 FFSCAE FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE COLUMBIA SC 536 PM EDT TUE JUL 31 2012 SCC063-079-312145- /O.CAN.KCAE.FF.W.0009.000000T0000Z-120731T2200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LEXINGTON SC-RICHLAND SC- 536 PM EDT TUE JUL 31 2012 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR RICHLAND AND LEXINGTON COUNTIES... THE HEAVY RAIN THAT CAUSED THE FLOOD THREAT HAS MOVED NORTHEAST OF THE AREA. ONLY A FEW LIGHT RAIN SHOWERS REMAIN AND ARE EXPECTED TO DIMINISH. REPORT FLOODING TO YOUR COUNTY SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 877 6 3 3...6 7 7 2. LAT...LON 3403 8108 3406 8100 3398 8095 3396 8103 $$
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 8:24 PM EDT | Severe Thunderstorm Warning | CAE | Aiken | 23 min |
| Jul 31, 1:59 PM EDT | Special Weather Statement | CAE | Barnwell | 61 min |
| Jul 31, 2:07 PM EDT | Severe Thunderstorm Warning | CAE | Aiken, Bamberg, Barnwell, Orangeburg | 35 min |
| Jul 31, 4:35 PM EDT | Areal Flood Advisory | CAE | Lexington, Richland | 55 min |
Nearby
Flash Flood Warnings in South Carolina, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.