Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 27, NWS Columbia, SC

May 3, 20214 counties in South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 3, 2021, 5:14 PM EDT for 4 counties in South Carolina. It was in force for 46 min. 1 report 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, 5:14 PM EDT (21:14 UTC)
Expired: May 3, 2021, 6:00 PM EDT
In force: 46 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Clarendon County, SC, Lee County, SC, Richland County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 56 km from the middle of the area, began a volume at 21:15 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

Time	Report	Where	Remark
May 3, 5:57 PM EDT	TSTM WND DMG	2 Sse Dalzell, SC	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 2 SSE DALZELL. HIGHWAY PATROL REPORTS TREE DOWN ALONG BREWINGTON RD NEAR OCTOBER CIR. TIME ESTIMATED BY RADAR.

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.

Issued	Product	Office	Lasted
May 3, 1:25 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.2 hours before the alert went out and 124 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: 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.

670 
WUUS52 KCAE 032114
SVRCAE
SCC027-061-079-085-032200-
/O.NEW.KCAE.SV.W.0027.210503T2114Z-210503T2200Z/

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

The National Weather Service in Columbia has issued a

* Severe Thunderstorm Warning for...
  Southwestern Lee County in central South Carolina...
  North central Clarendon County in central South Carolina...
  Sumter County in central South Carolina...
  Southeastern Richland County in central South Carolina...

* Until 600 PM EDT.

* At 514 PM EDT, a severe thunderstorm was located over Eastover, or
  7 miles east of McEntire Air Base, moving east at 45 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Sumter, South Sumter, Shaw Air Base, Eastover, Mulberry, Oakland,
  Sumter County Airport, Millwood, Elliott, Mayesville, Cane
  Savannah, Ashwood, Oswego, Dalzell, Dinkins Mill, Lakewood,
  Wedgewood, East Sumter, St. Charles and Cherryvale.

This includes the following highways...
 Interstate 20 in South Carolina near mile marker 121.
 Interstate 95 between mile markers 133 and 134.

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 3380 8075 3397 8078 3419 8019 3387 8009
TIME...MOT...LOC 2114Z 258DEG 37KT 3390 8068 

HAIL...0.75IN
WIND...60MPH
 
$$

CRL

2 follow-up statements

518 
WWUS52 KCAE 032132
SVSCAE

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

SCC027-079-032141-
/O.CAN.KCAE.SV.W.0027.000000T0000Z-210503T2200Z/
Clarendon SC-Richland SC-
532 PM EDT Mon May 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CLARENDON AND
SOUTHEASTERN RICHLAND 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 3387 8014 3381 8061 3384 8062 3385 8063
      3388 8062 3392 8063 3397 8062 3397 8063
      3398 8063 3419 8019 3388 8009
TIME...MOT...LOC 2131Z 258DEG 37KT 3394 8047 

$$

SCC061-085-032200-
/O.CON.KCAE.SV.W.0027.000000T0000Z-210503T2200Z/
Lee SC-Sumter SC-
532 PM EDT Mon May 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR SOUTHWESTERN LEE AND NORTHWESTERN SUMTER COUNTIES...

At 531 PM EDT, a severe thunderstorm was located over Shaw Air Base,
moving east at 45 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Sumter, South Sumter, Shaw Air Base, Mulberry, Oakland, Sumter County
Airport, Millwood, Elliott, Mayesville, Cane Savannah, Ashwood,
Oswego, Dalzell, Lakewood, Wedgewood, East Sumter, St. Charles,
Cherryvale, Wisacky and Stateburg.

This includes the following highways...
 Interstate 20 in South Carolina near mile marker 121.
 Interstate 95 near mile marker 134.

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 3387 8014 3381 8061 3384 8062 3385 8063
      3388 8062 3392 8063 3397 8062 3397 8063
      3398 8063 3419 8019 3388 8009
TIME...MOT...LOC 2131Z 258DEG 37KT 3394 8047 

HAIL...0.75IN
WIND...60MPH
 
$$

CRL

209 
WWUS52 KCAE 032152
SVSCAE

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

SCC061-085-032202-
/O.EXP.KCAE.SV.W.0027.000000T0000Z-210503T2200Z/
Lee SC-Sumter SC-
552 PM EDT Mon May 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LEE AND
NORTHWESTERN SUMTER COUNTIES WILL EXPIRE AT 600 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

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

LAT...LON 3387 8014 3381 8061 3384 8062 3385 8063
      3388 8062 3392 8063 3397 8062 3397 8063
      3398 8063 3419 8019 3388 8009
TIME...MOT...LOC 2152Z 258DEG 37KT 3398 8024 

$$

CRL

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 2:35 PM EDT	Special Weather Statement	CAE	McCormick	25 min
May 3, 3:05 PM EDT	Tornado Warning	CAE	Newberry	40 min
May 3, 3:24 PM EDT	Severe Thunderstorm Warning	CAE	Newberry, Saluda	51 min
May 3, 3:28 PM EDT	Severe Thunderstorm Warning	CAE	Lexington, Saluda	32 min
May 3, 3:32 PM EDT	Severe Thunderstorm Warning	CAE	Newberry	43 min
May 3, 3:39 PM EDT	Tornado Warning	CAE	Lexington	21 min
May 3, 3:51 PM EDT	Severe Thunderstorm Warning	CAE	McCormick	39 min
May 3, 3:59 PM EDT	Severe Thunderstorm Warning	CAE	Lexington, Richland	31 min
May 3, 4:03 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Richland, Sumter	27 min
May 3, 4:05 PM EDT	Severe Thunderstorm Warning	CAE	Lexington, Newberry, Richland, Saluda	40 min
May 3, 4:19 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lee, Sumter	26 min
May 3, 4:22 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Kershaw, Lexington, Richland	23 min
May 3, 4:30 PM EDT	Severe Thunderstorm Warning	CAE	Lexington, Richland	15 min
May 3, 4:41 PM EDT	Severe Thunderstorm Warning	CAE	Lee, Sumter	34 min
May 3, 4:44 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lee, Richland, Sumter	31 min
May 3, 4:56 PM EDT	Areal Flood Advisory	CAE	Lexington, Richland	2 hr
May 3, 5:50 PM EDT	Special Weather Statement	CAE	Lee	25 min
May 3, 6:01 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Barnwell	44 min
May 3, 6:44 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Orangeburg	46 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2021 Every 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.