Alert archive / South Carolina / Tornado Warnings in 2007

Tornado Warning 12, NWS Columbia, SC

April 15, 2007Orangeburg County, South Carolina

NWS Columbia, SC issued this tornado warning at Apr 15, 2007, 8:31 AM EDT for Orangeburg County, South Carolina. It was in force for 29 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: Apr 15, 2007, 8:31 AM EDT (12:31 UTC)
Expired: Apr 15, 2007, 9:00 AM EDT
In force: 29 min
Issued by: NWS Columbia, SC
Area: Counties, with a storm outline in the text

County Orangeburg County, SC

The radar

The Columbia radar (KCAE), 73 km from the middle of the area, began a volume at 12:33 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 15, 2:01 AM EDT	Tornado Watch	SPC	7 hr
Apr 15, 8:08 AM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 0.5 hours before the alert went out and 86 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: 948 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 589 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 291 m²/s²
0-3 km storm-relative helicity: 339 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 6.4

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KCAE 151232
TORCAE
SCC075-151300-
/O.NEW.KCAE.TO.W.0012.070415T1231Z-070415T1300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
831 AM EDT SUN APR 15 2007

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN ORANGEBURG COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 900 AM EDT

* AT 828 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO               
  NEAR BRANCHVILLE MOVING NORTHEAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BOWMAN

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1, 800, 7
7 5, 7 1 9 9.

LAT...LON 3330 8093 3319 8078 3346 8041 3352 8052
      3343 8065 3354 8074

$$

TTH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 8:13 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield, Saluda	32 min
Apr 14, 8:34 PM EDT	Severe Thunderstorm Warning	CAE	Newberry, Saluda	26 min
Apr 14, 9:04 PM EDT	Severe Thunderstorm Warning	CAE	Newberry	26 min
Apr 15, 3:21 AM EDT	Severe Thunderstorm Warning	CAE	Barnwell	39 min
Apr 15, 3:32 AM EDT	Wind Advisory	CAE	Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more	20 hr
Apr 15, 3:53 AM EDT	Severe Thunderstorm Warning	CAE	Barnwell	52 min
Apr 15, 4:30 AM EDT	Severe Thunderstorm Warning	CAE	Bamberg	45 min
Apr 15, 7:49 AM EDT	Tornado Warning	CAE	Bamberg	26 min
Apr 15, 8:10 AM EDT	Tornado Warning	CAE	Bamberg	35 min
Apr 15, 8:16 AM EDT	Tornado Warning	CAE	Sumter	29 min
Apr 15, 8:42 AM EDT	Tornado Warning	CAE	Lee, Sumter	33 min
Apr 15, 9:08 AM EDT	Tornado Warning	CAE	Orangeburg	37 min
Apr 15, 9:49 AM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Orangeburg	26 min
Apr 15, 10:07 AM EDT	Severe Thunderstorm Warning	CAE	Clarendon	23 min
Apr 15, 3:48 PM EDT	Lake Wind Advisory	CAE	Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more	29 hr

Nearby

Tornado Warnings in South Carolina, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.