Alert archive / South Carolina / Tornado Warnings in 2017

Tornado Warning 26, NWS Columbia, SC

October 8, 2017McCormick County, South Carolina; Lincoln County, Georgia

NWS Columbia, SC issued this tornado warning at Oct 8, 2017, 4:04 PM EDT for McCormick County, South Carolina; Lincoln County, Georgia. It was in force for 17 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: Oct 8, 2017, 4:04 PM EDT (20:04 UTC)
Expired: Oct 8, 2017, 4:21 PM EDT
In force: 17 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Lincoln County, GA, McCormick County, SC

The radar

The Greer radar (KGSP), 99 km from the middle of the area, began a volume at 20:07 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.1 hours before the alert went out and 202 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: 333 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 592 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 210 m²/s²
0-3 km storm-relative helicity: 242 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

As transmitted.

999 
WFUS52 KCAE 082004
TORCAE
GAC181-SCC065-082045-
/O.NEW.KCAE.TO.W.0026.171008T2004Z-171008T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Columbia SC
404 PM EDT SUN OCT 8 2017

The National Weather Service in Columbia has issued a

* Tornado Warning for...
  North central Lincoln County in east central Georgia...
  Northwestern McCormick County in central South Carolina...

* Until 445 PM EDT
    
* At 403 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles north of Lincolnton, or 31 miles north of
  Thomson, moving north at 30 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
  north central Lincoln and northwestern McCormick Counties,
  including the following locations: Willington and Mount Carmel.

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 3407 8253 3407 8251 3408 8248 3406 8245
      3406 8233 3401 8231 3383 8242 3385 8254
TIME...MOT...LOC 2003Z 195DEG 33KT 3391 8246 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

WRS

1 follow-up statement

311 
WWUS52 KCAE 082021
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
421 PM EDT SUN OCT 8 2017

GAC181-SCC065-082030-
/O.CAN.KCAE.TO.W.0026.000000T0000Z-171008T2045Z/
Lincoln GA-McCormick SC-
421 PM EDT SUN OCT 8 2017

...THE TORNADO WARNING FOR NORTH CENTRAL LINCOLN AND NORTHWESTERN
MCCORMICK COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.

Remember, a Severe Thunderstorm Warning still remains in effect for
McCormick County. 

LAT...LON 3407 8253 3407 8251 3408 8248 3406 8245
      3406 8233 3401 8231 3383 8242 3385 8254
TIME...MOT...LOC 2018Z 195DEG 33KT 3406 8241 

$$

WRS

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 8, 3:56 PM EDT	Severe Thunderstorm Warning	CAE	McCormick	37 min
Oct 8, 4:14 PM EDT	Tornado Warning	CAE	Newberry	31 min
Oct 8, 6:13 PM EDT	Special Weather Statement	CAE	Barnwell	47 min

Nearby

Tornado Warnings in South Carolina, 2017 Tornado Warnings in Georgia, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.