Alert archive / South Carolina / Tornado Warnings in 2017

Tornado Warning 7, NWS Columbia, SC

February 15, 2017Bamberg County, Orangeburg County, South Carolina

NWS Columbia, SC issued this tornado warning at Feb 15, 2017, 11:38 AM EST for Bamberg County, Orangeburg County, South Carolina. It was in force for 16 min. 2 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: Feb 15, 2017, 11:38 AM EST (16:38 UTC)
Expired: Feb 15, 2017, 11:54 AM EST
In force: 16 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Bamberg County, SC, Orangeburg County, SC

The radar

The Charleston,SC radar (KCLX), 70 km from the middle of the area, began a volume at 16:38 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 15, 11:39 AM EST	HAIL 0.75	Branchville, SC	FIREFIGHTER REPORTED DIME TO PENNY SIZED HAIL IN THE TOWN OF BRANCHVILLE. .
Feb 15, 11:40 AM EST	HAIL 1	2 Ese Branchville, SC	QUARTER SIZED HAIL REPORTED AT BRANCHVILLE HIGH SCHOOL. .

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, 4.6 hours before the alert went out and 82 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1230 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 180 m²/s²
0-3 km storm-relative helicity: 254 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

128 
WFUS52 KCAE 151638
TORCAE
SCC009-075-151715-
/O.NEW.KCAE.TO.W.0007.170215T1638Z-170215T1715Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Columbia SC
1138 AM EST WED FEB 15 2017

The National Weather Service in Columbia has issued a

* Tornado Warning for...
  East central Bamberg County in central South Carolina...
  South central Orangeburg County in central South Carolina...

* Until 1215 PM EST
    
* At 1137 AM EST, a severe thunderstorm capable of producing a
  tornado was located over Branchville, or 14 miles east of Bamberg,
  moving east at 60 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This tornadic thunderstorm will remain over mainly rural areas of
  east central Bamberg and south central Orangeburg Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3324 8092 3333 8081 3327 8063 3326 8064
      3324 8068 3315 8085
TIME...MOT...LOC 1637Z 277DEG 53KT 3325 8078 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

WRS

1 follow-up statement

317 
WWUS52 KCAE 151654
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
1154 AM EST WED FEB 15 2017

SCC009-075-151704-
/O.CAN.KCAE.TO.W.0007.000000T0000Z-170215T1715Z/
Bamberg SC-Orangeburg SC-
1154 AM EST WED FEB 15 2017

...THE TORNADO WARNING FOR EAST CENTRAL BAMBERG AND SOUTH CENTRAL
ORANGEBURG COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has weakened 
therefore the warning has been cancelled.

LAT...LON 3324 8092 3333 8081 3327 8063 3326 8064
      3324 8068 3315 8085
TIME...MOT...LOC 1653Z 277DEG 53KT 3322 8048 

$$

WRS

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 15, 7:59 AM EST	Special Weather Statement	CAE	Edgefield, McCormick, Saluda	46 min
Feb 15, 8:38 AM EST	Special Weather Statement	CAE	Edgefield	52 min
Feb 15, 8:57 AM EST	Special Weather Statement	CAE	Lexington, Richland	63 min
Feb 15, 9:07 AM EST	Special Weather Statement	CAE	Aiken	38 min
Feb 15, 10:06 AM EST	Special Weather Statement	CAE	Bamberg, Barnwell, Calhoun, Clarendon, Orangeburg, Sumter	54 min
Feb 15, 10:35 AM EST	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Orangeburg, Sumter	40 min
Feb 15, 10:50 AM EST	Tornado Warning	CAE	Aiken, Barnwell	29 min
Feb 15, 11:09 AM EST	Severe Thunderstorm Warning	CAE	Bamberg, Barnwell, Orangeburg	54 min
Feb 15, 11:49 AM EST	Severe Thunderstorm Warning	CAE	Clarendon, Orangeburg	26 min

Nearby

Tornado Warnings in South Carolina, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.