Alert archive / South Carolina / Tornado Warnings in 2020

Tornado Warning 13, NWS Columbia, SC

April 13, 2020Bamberg County, Calhoun County, Orangeburg County, South Carolina

NWS Columbia, SC issued this tornado warning at Apr 13, 2020, 6:13 AM EDT for Bamberg County, Calhoun County, Orangeburg County, South Carolina. It was in force for 32 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
Apr 13, 2020, 6:13 AM EDT (10:13 UTC)
Expired
Apr 13, 2020, 6:45 AM EDT
In force
32 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Bamberg County, SC, Calhoun County, SC, Orangeburg County, SC

The radar

The Columbia radar (KCAE), 67 km from the middle of the area, began a volume at 10:16 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
Apr 13, 6:25 AM EDTTORNADO4 Ne Rowesville, SCA TORNADO TOUCHED DOWN IN ORANGEBURG COUNTY ABOUT 4 MILES NORTHEAST OF ROWESVILLE AND TRACKED NORTHEASTWARD ACROSS INTERSTATE 26 AND HIGHWAY 301. EF0 DAMAGE OCCURRED FROM THE INTERSECTION OF GARLAND AND BETHEL FOREST ROAD, WHERE THE TORNADO STARTED, TO JUST PR
Apr 13, 6:29 AM EDTTSTM WND DMG7 Ese Wilkinson Heights, SCMINOR ROOF AND EQUIPMENT DAMAGE AT THE ALLIED AIR PLANT NEAR I-20 AND HIGHWAY 301. PHOTOS SHARED VIA SOCIAL MEDIA. POSSIBLE TORNADO DAMAGE.
Apr 13, 6:30 AM EDTTSTM WND DMG2 N Orangeburg, SCPUBLIC REPORTED STRONG WINDS AND POWER OUTAGE.

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
Apr 13, 3:20 AM EDTTornado WatchSPC8 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 10.2 hours before the alert went out and 95 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 00:00Z on 2020-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 00:00Z on 2020-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 371 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
944 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
371 m²/s²
0-3 km storm-relative helicity
494 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

770 
WFUS52 KCAE 131013
TORCAE
SCC009-017-075-131045-
/O.NEW.KCAE.TO.W.0013.200413T1013Z-200413T1045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Columbia SC
613 AM EDT Mon Apr 13 2020

The National Weather Service in Columbia has issued a

* Tornado Warning for...
  Southeastern Calhoun County in central South Carolina...
  Central Bamberg County in central South Carolina...
  Central Orangeburg County in central South Carolina...

* Until 645 AM EDT.
    
* At 612 AM EDT, a severe thunderstorm capable of producing a tornado
  was located near Bamberg, moving northeast at 50 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...
  Orangeburg, Orangeburg County Airport, Edisto Gardens, South 
  Carolina State University and Claflin College around 625 AM EDT.
  Brookdale around 630 AM EDT.
  Elloree around 645 AM EDT.

Other locations impacted by this tornadic thunderstorm include
Wilkinson Heights, Cope, Prince of Orange Mall, Edisto, Santee,
Creston, Yonder Field, Rowesville, Vance and Cameron.

This includes the following highways...
 Interstate 26 between mile markers 145 and 164.
 Interstate 95 between mile markers 92 and 99.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes are nearly impossible to see at night. Do not wait to see
or hear the tornado. Immediately move to an interior room or closet
on the lowest floor of a sturdy building.

&&

LAT...LON 3322 8101 3343 8113 3366 8062 3343 8040
TIME...MOT...LOC 1012Z 242DEG 45KT 3339 8100 

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

$$

HC

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 4:23 AM EDTTornado WarningCAEEdgefield, McCormick37 min
Apr 13, 4:29 AM EDTSevere Thunderstorm WarningCAEEdgefield, McCormick, Newberry, Saluda46 min
Apr 13, 4:41 AM EDTSevere Thunderstorm WarningCAEFairfield, Newberry, Saluda49 min
Apr 13, 4:58 AM EDTSevere Thunderstorm WarningCAEAiken, Barnwell47 min
Apr 13, 5:06 AM EDTSevere Thunderstorm WarningCAEAiken, Edgefield, Lexington, Newberry, Saluda39 min
Apr 13, 5:14 AM EDTTornado WarningCAEAiken, Barnwell31 min
Apr 13, 5:16 AM EDTSevere Thunderstorm WarningCAEFairfield, Kershaw, Lancaster29 min
Apr 13, 5:34 AM EDTSevere Thunderstorm WarningCAEAiken, Calhoun, Fairfield, Lexington, Newberry, Richland41 min
Apr 13, 5:37 AM EDTTornado Warning Tornado observedConsiderable damage threatCAEAiken, Bamberg, Barnwell, Orangeburg23 min
Apr 13, 5:43 AM EDTTornado WarningCAEBamberg, Barnwell, Orangeburg32 min
Apr 13, 5:55 AM EDTSevere Thunderstorm WarningCAEFairfield, Kershaw, Lancaster35 min
Apr 13, 5:56 AM EDTTornado Warning Tornado observedConsiderable damage threatCAEAiken, Bamberg, Barnwell, Calhoun, Lexington, Orangeburg34 min
Apr 13, 6:02 AM EDTSevere Thunderstorm WarningCAEAiken, Lexington, Orangeburg28 min
Apr 13, 6:04 AM EDTSevere Thunderstorm WarningCAECalhoun, Fairfield, Kershaw, Lexington, Richland, Sumter41 min
Apr 13, 6:09 AM EDTTornado WarningCAEBamberg, Barnwell, Orangeburg36 min
Apr 13, 6:22 AM EDTTornado Warning Tornado observedConsiderable damage threatCAECalhoun, Clarendon, Orangeburg, Richland, Sumter23 min
Apr 13, 6:23 AM EDTSevere Thunderstorm WarningCAEChesterfield, Kershaw, Lancaster52 min
Apr 13, 6:35 AM EDTSevere Thunderstorm WarningCAEBamberg, Calhoun, Clarendon, Orangeburg, Sumter40 min
Apr 13, 6:39 AM EDTSevere Thunderstorm WarningCAECalhoun, Clarendon, Kershaw, Lee, Richland, Sumter31 min
Apr 13, 6:46 AM EDTSevere Thunderstorm WarningCAEChesterfield29 min
Apr 13, 6:58 AM EDTSevere Thunderstorm WarningCAEClarendon, Lee, Sumter32 min

Nearby

Tornado Warnings in South Carolina, 2020Every tornado warning in 2020Tornadoes in 2020

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.