Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 26, NWS Columbia, SC

May 3, 20214 counties in South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 3, 2021, 4:44 PM EDT for 4 counties in South Carolina. It was in force for 31 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
May 3, 2021, 4:44 PM EDT (20:44 UTC)
Expired
May 3, 2021, 5:15 PM EDT
In force
31 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Kershaw County, SC, Lee County, SC, Richland County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 34 km from the middle of the area, began a volume at 20:46 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 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, 8.7 hours before the alert went out and 139 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.

559 
WUUS52 KCAE 032044
SVRCAE
SCC055-061-079-085-032115-
/O.NEW.KCAE.SV.W.0026.210503T2044Z-210503T2115Z/

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

The National Weather Service in Columbia has issued a

* Severe Thunderstorm Warning for...
  Western Lee County in central South Carolina...
  Northwestern Sumter County in central South Carolina...
  Southeastern Richland County in central South Carolina...
  Southwestern Kershaw County in central South Carolina...

* Until 515 PM EDT.

* At 443 PM EDT, a severe thunderstorm was located over Horrel Hill,
  or near McEntire Air Base, moving east at 35 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Columbia, Sumter, Forest Acres, McEntire Air Base, Dentsville, Shaw
  Air Base, Arcadia Lakes, Eastover, Hopkins, Oakland, Horrel Hill,
  Woodfield, Sesquicentennial State Park, Fort Jackson, Dinkins Mill,
  Fort Jackson Wildcat Road, Wedgewood, Boykin, Cherryvale and
  Wateree River Correctional Institution.

This includes the following highways...
 Interstate 20 in South Carolina between mile markers 74 and 89, and
between mile markers 100 and 102.
 Interstate 77 between mile markers 12 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 3385 8093 3409 8096 3423 8051 3390 8042
TIME...MOT...LOC 2043Z 251DEG 30KT 3396 8084 

HAIL...1.00IN
WIND...60MPH
 
$$

CRL
1 follow-up statement
195 
WWUS52 KCAE 032107
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
507 PM EDT Mon May 3 2021

SCC055-061-032116-
/O.CAN.KCAE.SV.W.0026.000000T0000Z-210503T2115Z/
Lee SC-Kershaw SC-
507 PM EDT Mon May 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN LEE AND SOUTHWESTERN
KERSHAW COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

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

LAT...LON 3390 8042 3386 8088 3401 8087 3407 8073
      3407 8072 3408 8070 3408 8066 3411 8062
      3410 8058 3415 8051 3416 8049 3415 8049
TIME...MOT...LOC 2106Z 251DEG 30KT 3402 8063 

$$

SCC079-085-032115-
/O.CON.KCAE.SV.W.0026.000000T0000Z-210503T2115Z/
Sumter SC-Richland SC-
507 PM EDT Mon May 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR NORTHWESTERN SUMTER AND SOUTHEASTERN RICHLAND COUNTIES...

At 506 PM EDT, a severe thunderstorm was located 7 miles west of
Oakland, or 9 miles west of Shaw Air Base, moving east at 35 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Columbia, Sumter, McEntire Air Base, Shaw Air Base, Eastover,
Hopkins, Oakland, Horrel Hill, Dinkins Mill, Fort Jackson McCrady
Training Center, Cherryvale, Wateree River Correctional Institution,
Rembert, Stateburg, Wedgewood, Cane Savannah and Dalzell.

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 3390 8042 3386 8088 3401 8087 3407 8073
      3407 8072 3408 8070 3408 8066 3411 8062
      3410 8058 3415 8051 3416 8049 3415 8049
TIME...MOT...LOC 2106Z 251DEG 30KT 3402 8063 

HAIL...0.75IN
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, 4:22 PM EDTSevere Thunderstorm WarningCAECalhoun, Kershaw, Lexington, Richland23 min
May 3, 4:30 PM EDTSevere Thunderstorm WarningCAELexington, Richland15 min
May 3, 4:41 PM EDTSevere Thunderstorm WarningCAELee, Sumter34 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.