Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 30, NWS Columbia, SC

May 3, 2021Bamberg County, Orangeburg County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 3, 2021, 6:44 PM EDT for Bamberg County, Orangeburg County, South Carolina. It was in force for 46 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, 6:44 PM EDT (22:44 UTC)
Expired: May 3, 2021, 7:30 PM EDT
In force: 46 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Bamberg County, SC, Orangeburg County, SC

The radar

The Charleston,SC radar (KCLX), 81 km from the middle of the area, began a volume at 22:48 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.

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, 10.7 hours before the alert went out and 77 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.

723 
WUUS52 KCAE 032244
SVRCAE
SCC009-075-032330-
/O.NEW.KCAE.SV.W.0030.210503T2244Z-210503T2330Z/

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

The National Weather Service in Columbia has issued a

* Severe Thunderstorm Warning for...
  Bamberg County in central South Carolina...
  Southeastern Orangeburg County in central South Carolina...

* Until 730 PM EDT.

* At 644 PM EDT, a severe thunderstorm was located 8 miles north of
  Lodge, or 9 miles southeast of Bamberg, moving east at 45 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Bamberg, Denmark, Holly Hill, Branchville, Bowman, Elloree, Rivers
  Bridge State Park, Santee, Ehrhardt, Rowesville, Vance, Cope,
  Yonder Field and Bamberg County Airport.

This includes the following highways...
 Interstate 26 between mile markers 153 and 169.
 Interstate 95 between mile markers 85 and 99.

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.

Excessive cloud to ground lightning is occurring with this storm. If
you can hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3310 8118 3332 8115 3350 8068 3347 8061
      3352 8061 3355 8053 3354 8051 3355 8048
      3352 8047 3328 8028 3326 8032 3328 8035
      3326 8036 3326 8043 3329 8049 3333 8051
      3313 8089 3306 8090 3310 8094 3303 8108
TIME...MOT...LOC 2244Z 255DEG 40KT 3318 8094 

HAIL...1.50IN
WIND...60MPH
 
$$

JAQ

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, 5:14 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Lee, Richland, Sumter	46 min
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

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.