Alert archive / South Carolina / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 274, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at Sep 5, 2011, 6:37 PM EDT for 9 counties in South Carolina. It was in force for 38 min. 3 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
- Sep 5, 2011, 6:37 PM EDT (22:37 UTC)
- Expired
- Sep 5, 2011, 7:15 PM EDT
- In force
- 38 min
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
Counties Aiken County, SC, Calhoun County, SC, Edgefield County, SC, Fairfield County, SC, Kershaw County, SC, Lexington County, SC, Newberry County, SC, Richland County, SC, Saluda County, SC
The radar
The Columbia radar (KCAE), 46 km from the middle of the area, began a volume at 22:40 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 |
|---|---|---|---|
| Sep 5, 6:45 PM EDT | TSTM WND DMG | 5 Se Chapin, SC | TREES DOWN NEAR THE INTERSECTION OF BEARDS CREEK CIRCLE AND ISLAND TRAIL |
| Sep 5, 6:50 PM EDT | TSTM WND DMG | 4 Ene Forest Acres, SC | TREES DOWN AT INTERSECTION OF 1700 BLOCK OF FAIRLAMB AVENUE AND PERCIVAL ROAD |
| Sep 5, 7:19 PM EDT | TSTM WND DMG | 12 Wnw Winnsboro, SC | ONE TREE DOWN NEAR SALEM CROSSROADS NEAR SR 34 AND SR 215. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 5, 3:42 PM EDT | Tornado Watch | SPC | 7 hr |
| Sep 5, 6:12 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 10.6 hours before the alert went out and 201 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
- 175 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 1017 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
652
WUUS52 KCAE 052237
SVRCAE
SCC003-017-037-039-055-063-071-079-081-052315-
/O.NEW.KCAE.SV.W.0274.110905T2237Z-110905T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
637 PM EDT MON SEP 5 2011
THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN EDGEFIELD COUNTY IN CENTRAL SOUTH CAROLINA
FAIRFIELD COUNTY IN CENTRAL SOUTH CAROLINA
SOUTHWESTERN KERSHAW COUNTY IN CENTRAL SOUTH CAROLINA
LEXINGTON COUNTY IN CENTRAL SOUTH CAROLINA
NEWBERRY COUNTY IN CENTRAL SOUTH CAROLINA
WESTERN RICHLAND COUNTY IN CENTRAL SOUTH CAROLINA
SALUDA COUNTY IN CENTRAL SOUTH CAROLINA
NORTHERN AIKEN COUNTY IN CENTRAL SOUTH CAROLINA
NORTHWESTERN CALHOUN COUNTY IN CENTRAL SOUTH CAROLINA
* UNTIL 715 PM EDT
* AT 636 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM CAYCE TO 6 MILES WEST OF LEXINGTON TO 6 MILES NORTH OF
JOHNSTON...OR ALONG A LINE EXTENDING FROM CAYCE TO 6 MILES WEST OF
LEXINGTON TO 17 MILES WEST OF BATESBURG...AND MOVING NORTH AT 45
MPH.
* SOME COMMUNITIES IN THE WARNING AREA INCLUDE FIVE POINTS...FORT
JACKSON...WOODFIELDS...WINNSBORO...WEST COLUMBIA...ST. ANDREWS...
SPRINGDALE...SOUTH CONGAREE...SALUDA...RIDGE SPRING...RED BANK...
PROSPERITY...PINE RIDGE...OAK GROVE...NEWBERRY...LEXINGTON...
LEESVILLE...JOHNSTON...IRMO...GASTON...FOREST ACRES...EDGEFIELD...
DENTSVILLE...COLUMBIA...CAYCE...BATESBURG AND ARCADIA LAKES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE...TOLL FREE 1 877 6 3
3...6 7 7 2.
&&
LAT...LON 3446 8088 3439 8068 3373 8098 3383 8133
3372 8198 3443 8175 3448 8169 3449 8157
3445 8153 3449 8149 3449 8145 3451 8143
3455 8111
TIME...MOT...LOC 2237Z 198DEG 38KT 3392 8102 3399 8132
3392 8184
$$The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 1:18 PM EDT | Lake Wind Advisory | CAE | Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more | 29 hr |
| Sep 5, 5:13 PM EDT | Tornado Warning | CAE | Fairfield, Newberry | 47 min |
| Sep 5, 5:24 PM EDT | Severe Thunderstorm Warning | CAE | Bamberg, Barnwell | 36 min |
| Sep 5, 5:59 PM EDT | Severe Thunderstorm Warning | CAE | Aiken, Bamberg, Barnwell, Calhoun, Lexington, Orangeburg | 46 min |
| Sep 5, 6:47 PM EDT | Tornado Warning | CAE | Lancaster | 28 min |
| Sep 5, 7:16 PM EDT | Severe Thunderstorm Warning | CAE | Fairfield, Newberry | 29 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2011Every severe thunderstorm warning in 2011
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.