Alert archive / South Carolina / Tornado Warnings in 2021

Tornado Warning 15, NWS Columbia, SC

August 17, 2021Lexington County, Saluda County, South Carolina

NWS Columbia, SC issued this tornado warning at Aug 17, 2021, 3:12 PM EDT for Lexington County, Saluda County, South Carolina. It was in force for 48 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
Aug 17, 2021, 3:12 PM EDT (19:12 UTC)
Expired
Aug 17, 2021, 4:00 PM EDT
In force
48 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Lexington County, SC, Saluda County, SC

The radar

The Columbia radar (KCAE), 36 km from the middle of the area, began a volume at 19:13 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

TimeReportWhereRemark
Aug 17, 3:12 PM EDTFUNNEL CLOUD4 S Batesburg, SCSPOTTER REPORTED FUNNEL CLOUD. RAPIDLY ROTATING FUNNEL.
Aug 17, 3:31 PM EDTTORNADO3 Nw Summit, SCA NATIONAL WEATHER SERVICE STORM SURVEY TEAM CONFIRMED AN EF0 TORNADO, WITH PEAK WIND SPEEDS OF 75 MPH, JUST SOUTH OF LAKE MURRAY IN LEXINGTON COUNTY, SC. THE TORNADO PRODUCED SPORADIC AND MAINLY MINOR TREE DAMAGE ALONG ITS PATH AS IT MOVED NORTHWARD FROM NEAR
Aug 17, 3:33 PM EDTTORNADO4 Nne Leesville, SCA NATIONAL WEATHER SERVICE STORM SURVEY TEAM CONFIRMED AN EF0 TORNADO, WITH PEAK WIND SPEEDS OF 75 MPH, NORTH OF LEESVILLE IN LEXINGTON COUNTY, SC, NEAR THE SALUDA COUNTY BORDER. THE TORNADO PRODUCED SPORADIC AND MAINLY MINOR TREE DAMAGE AS IT MOVED NORTHWARD

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.

IssuedProductOfficeLasted
Aug 17, 10:42 AM EDTTornado WatchSPC8 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 7.2 hours before the alert went out and 184 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-pSkew-T log-p diagram, Charleston AFB, SC at 12:00Z on 2021-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1066 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2021-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1066 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
639 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
92 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

Open this sounding in Storm Lab

The text

As transmitted.

536 
WFUS52 KCAE 171912
TORCAE
SCC063-081-172000-
/O.NEW.KCAE.TO.W.0015.210817T1912Z-210817T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Columbia SC
312 PM EDT Tue Aug 17 2021

The National Weather Service in Columbia has issued a

* Tornado Warning for...
  Northwestern Lexington County in central South Carolina...
  Southeastern Saluda County in central South Carolina...

* Until 400 PM EDT.
    
* At 311 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Batesburg-Leesville, moving north at 25 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 dangerous storm will be near...
  Batesburg-Leesville around 325 PM EDT.

Other locations impacted by this tornadic thunderstorm include Cedar
Grove Fire Station, South Shore Marina, Oswald Park, Fredonia, Shull
Island, Siesta Cove Marina, Summit, Murray, Camp Kinard and Lake
Murray Shores.

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 3411 8158 3407 8150 3409 8146 3407 8139
      3409 8139 3408 8134 3379 8145 3383 8152
      3386 8154 3386 8156 3388 8157 3386 8160
      3387 8162
TIME...MOT...LOC 1911Z 189DEG 20KT 3385 8153 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$
1 follow-up statement
608 
WWUS52 KCAE 171929
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
329 PM EDT Tue Aug 17 2021

SCC081-171937-
/O.CAN.KCAE.TO.W.0015.000000T0000Z-210817T2000Z/
Saluda SC-
329 PM EDT Tue Aug 17 2021

...THE TORNADO WARNING FOR SOUTHEASTERN SALUDA COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning is expected to 
stay east of Saluda County. Therefore, the warning for Saluda 
County has been cancelled.

A Tornado Watch remains in effect until 700 PM EDT for central South
Carolina.

LAT...LON 3409 8146 3408 8145 3408 8143 3407 8139
      3409 8139 3408 8134 3391 8141 3394 8154
TIME...MOT...LOC 1927Z 202DEG 28KT 3396 8146 

$$

SCC063-172000-
/O.CON.KCAE.TO.W.0015.000000T0000Z-210817T2000Z/
Lexington SC-
329 PM EDT Tue Aug 17 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM EDT FOR
NORTHWESTERN LEXINGTON COUNTY...
    
At 327 PM EDT, a severe thunderstorm capable of producing a tornado 
was located about 4 miles northeast of Batesburg-Leesville, 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
northwestern Lexington County, including the following locations...
Cedar Grove Fire Station, South Shore Marina, Oswald Park, Fredonia,
Shull Island, Hollow Creek Public Park, Siesta Cove Marina, Summit,
Murray and Gilbert.

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 3409 8146 3408 8145 3408 8143 3407 8139
      3409 8139 3408 8134 3391 8141 3394 8154
TIME...MOT...LOC 1927Z 202DEG 28KT 3396 8146 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 12:31 PM EDTAreal Flood AdvisoryCAEAiken, Edgefield, McCormick, Saluda59 min
Aug 17, 12:59 PM EDTTornado WarningCAEEdgefield46 min
Aug 17, 1:34 PM EDTAreal Flood AdvisoryCAEAiken, Edgefield, Saluda56 min
Aug 17, 1:44 PM EDTTornado WarningCAEEdgefield, McCormick, Saluda17 min
Aug 17, 1:55 PM EDTTornado WarningCAEAiken, Edgefield, Lexington, Saluda50 min
Aug 17, 2:08 PM EDTTornado WarningCAEAiken37 min
Aug 17, 2:31 PM EDTTornado WarningCAEBarnwell44 min
Aug 17, 3:17 PM EDTAreal Flood AdvisoryCAEAiken, Edgefield, Lexington, Newberry, Saluda58 min
Aug 17, 3:48 PM EDTTornado WarningCAEFairfield, Lexington, Newberry, Richland42 min
Aug 17, 4:25 PM EDTSevere Thunderstorm WarningCAEFairfield, Newberry50 min
Aug 17, 4:31 PM EDTAreal Flood AdvisoryCAEFairfield, Lexington, Newberry, Richland, Saluda59 min
Aug 17, 4:48 PM EDTSevere Thunderstorm WarningCAEBamberg, Orangeburg42 min
Aug 17, 4:56 PM EDTTornado WarningCAEOrangeburg34 min
Aug 17, 5:29 PM EDTAreal Flood AdvisoryCAECalhoun, Kershaw, Lexington, Richland3 hr
Aug 17, 5:29 PM EDTTornado WarningCAECalhoun, Orangeburg46 min
Aug 17, 7:43 PM EDTSpecial Weather StatementCAEAiken32 min

Nearby

Tornado Warnings in South Carolina, 2021Every tornado warning in 2021Tornadoes in 2021

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.