Alert archive / South Carolina / Tornado Warnings in 2012

Tornado Warning 2, NWS Columbia, SC

February 24, 2012Calhoun County, Clarendon County, Sumter County, South Carolina

NWS Columbia, SC issued this tornado warning at Feb 24, 2012, 1:43 PM EST for Calhoun County, Clarendon County, Sumter County, South Carolina. It was in force for 17 min. 1 report 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: Feb 24, 2012, 1:43 PM EST (18:43 UTC)
Expired: Feb 24, 2012, 2:00 PM EST
In force: 17 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

Counties Calhoun County, SC, Clarendon County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 62 km from the middle of the area, began a volume at 18:45 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
Feb 24, 1:51 PM EST	TORNADO	6 Wsw Pinewood, SC	EMERGENCY MANAGER AND SHERIFF REPORTED A TORNADO HAD INTERMITTENT TOUCHDOWNS FROM SPARKLEBERRY LANDING RD TO WEST AVE. ON THE SOUTHWEST SIDE OF PINEWOOD TAKING DOWN SOME TREES AND TOPS OUT OF OTHERS. THERE WAS NO STRUCTURAL DAMAGE.

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
Feb 24, 8:48 AM EST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 6.7 hours before the alert went out and 106 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: 817 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 606 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 350 m²/s²
0-3 km storm-relative helicity: 365 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 9.4

Open this sounding in Storm Lab

The text

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

459 
WFUS52 KCAE 241843
TORCAE
SCC017-027-085-241900-
/O.NEW.KCAE.TO.W.0002.120224T1843Z-120224T1900Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
143 PM EST FRI FEB 24 2012

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN CALHOUN COUNTY IN CENTRAL SOUTH CAROLINA
  SOUTHERN SUMTER COUNTY IN CENTRAL SOUTH CAROLINA
  NORTHERN CLARENDON COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 200 PM EST

* AT 140 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 21 MILES
  SOUTHWEST OF SOUTH SUMTER...OR ABOUT 18 MILES NORTHEAST OF
  BROOKDALE...MOVING NORTHEAST AT 75 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SOUTH
  SUMTER AND MANNING

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY AFTERNOON
FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA.

&&

LAT...LON 3365 8003 3361 8065 3377 8067 3377 8066
      3375 8064 3375 8062 3378 8060 3381 8060
      3382 8062 3382 8061 3396 8012
TIME...MOT...LOC 1843Z 247DEG 64KT 3374 8048

$$

SJN

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 4:18 AM EST	Lake Wind Advisory	CAE	Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more	38 hr
Feb 24, 12:28 PM EST	Severe Thunderstorm Warning	CAE	Aiken, Edgefield	32 min
Feb 24, 1:01 PM EST	Severe Thunderstorm Warning	CAE	Aiken, Calhoun, Lexington, Orangeburg, Richland	29 min
Feb 24, 1:07 PM EST	Tornado Warning	CAE	Calhoun, Lexington	31 min
Feb 24, 1:33 PM EST	Areal Flood Advisory	CAE	Aiken, Lexington, Richland	117 min
Feb 24, 1:33 PM EST	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Kershaw, Lee, Orangeburg, Richland and 1 more	42 min
Feb 24, 2:59 PM EST	Areal Flood Advisory	CAE	Aiken, Edgefield, Lexington, Saluda	2 hr
Feb 24, 3:37 PM EST	Areal Flood Advisory	CAE	Aiken, Lexington, Richland	53 min
Feb 24, 5:16 PM EST	Special Weather Statement	CAE	Clarendon	29 min

Nearby

Tornado Warnings in South Carolina, 2012 Every tornado warning in 2012 Tornadoes 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.