Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 22, NWS Columbia, SC

May 3, 20214 counties in South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 3, 2021, 4:22 PM EDT for 4 counties in South Carolina. It was in force for 23 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
May 3, 2021, 4:22 PM EDT (20:22 UTC)
Expired
May 3, 2021, 4:45 PM EDT
In force
23 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Calhoun County, SC, Kershaw County, SC, Lexington County, SC, Richland County, SC

The radar

The Columbia radar (KCAE), 14 km from the middle of the area, began a volume at 20:25 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
May 3, 4:28 PM EDTTSTM WND DMG1 E Columbia, SCPHOTO ON SOCIAL MEDIA SHOWS MID-SIZED TREE FELL ON A PROPERTY NEAR FIVE POINTS IN COLUMBIA.
May 3, 4:47 PM EDTTSTM WND DMG1 Sw Oak Grove, SCEM REPORTS POWER LINE ARCING AT ST DAVIDS CHURCH RD AND SUNBRIGHT LN.

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
May 3, 1:25 PM EDTTornado WatchSPC6 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.4 hours before the alert went out and 147 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 2021-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1333 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2021-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 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
1333 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
765 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
141 m²/s²
Significant tornado parameter
0.9
Supercell composite
5.0

Open this sounding in Storm Lab

The text

As transmitted.

876 
WUUS52 KCAE 032022
SVRCAE
SCC017-055-063-079-032045-
/O.NEW.KCAE.SV.W.0022.210503T2022Z-210503T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Columbia SC
422 PM EDT Mon May 3 2021

The National Weather Service in Columbia has issued a

* Severe Thunderstorm Warning for...
  Northwestern Calhoun County in central South Carolina...
  East central Lexington County in central South Carolina...
  Southeastern Richland County in central South Carolina...
  Southwestern Kershaw County in central South Carolina...

* Until 445 PM EDT.

* At 421 PM EDT, a severe thunderstorm was located over SC State Fair
  Grounds, or over Columbia, moving east at 35 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Columbia, West Columbia, Cayce, Forest Acres, Springdale, St.
  Andrews, McEntire Air Base, Dentsville, Oak Grove, South Congaree,
  Pine Ridge, Arcadia Lakes, Eastover, Hopkins, Horrel Hill,
  Riverbanks Zoo, SC State Farmer's Market, Woodfield,
  Sesquicentennial State Park and Columbia Metro Airport.

This includes the following highways...
 Interstate 126 between mile markers 0 and 3.
 Interstate 20 in South Carolina between mile markers 60 and 86.
 Interstate 26 between mile markers 107 and 121.
 Interstate 77 between mile markers 0 and 18.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

For your protection seek shelter inside a sturdy building and stay
away from windows.

&&

LAT...LON 3384 8116 3403 8118 3416 8069 3389 8063
TIME...MOT...LOC 2021Z 258DEG 29KT 3399 8102 

HAIL...1.25IN
WIND...60MPH
 
$$

CRL

The office that day

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

IssuedProductOfficeCountiesLasted
May 3, 2:35 PM EDTSpecial Weather StatementCAEMcCormick25 min
May 3, 3:05 PM EDTTornado WarningCAENewberry40 min
May 3, 3:24 PM EDTSevere Thunderstorm WarningCAENewberry, Saluda51 min
May 3, 3:28 PM EDTSevere Thunderstorm WarningCAELexington, Saluda32 min
May 3, 3:32 PM EDTSevere Thunderstorm WarningCAENewberry43 min
May 3, 3:39 PM EDTTornado WarningCAELexington21 min
May 3, 3:51 PM EDTSevere Thunderstorm WarningCAEMcCormick39 min
May 3, 3:59 PM EDTSevere Thunderstorm WarningCAELexington, Richland31 min
May 3, 4:03 PM EDTSevere Thunderstorm WarningCAEKershaw, Richland, Sumter27 min
May 3, 4:05 PM EDTSevere Thunderstorm WarningCAELexington, Newberry, Richland, Saluda40 min
May 3, 4:19 PM EDTSevere Thunderstorm WarningCAEKershaw, Lee, Sumter26 min
May 3, 4:30 PM EDTSevere Thunderstorm WarningCAELexington, Richland15 min
May 3, 4:41 PM EDTSevere Thunderstorm WarningCAELee, Sumter34 min
May 3, 4:44 PM EDTSevere Thunderstorm WarningCAEKershaw, Lee, Richland, Sumter31 min
May 3, 4:56 PM EDTAreal Flood AdvisoryCAELexington, Richland2 hr
May 3, 5:14 PM EDTSevere Thunderstorm WarningCAEClarendon, Lee, Richland, Sumter46 min
May 3, 5:50 PM EDTSpecial Weather StatementCAELee25 min
May 3, 6:01 PM EDTSevere Thunderstorm WarningCAEBamberg, Barnwell44 min
May 3, 6:44 PM EDTSevere Thunderstorm WarningCAEBamberg, Orangeburg46 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2021Every severe thunderstorm warning 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.