Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 29, NWS Columbia, SC

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

NWS Columbia, SC issued this severe thunderstorm warning at May 3, 2021, 6:01 PM EDT for Bamberg County, Barnwell County, South Carolina. It was in force for 44 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, 6:01 PM EDT (22:01 UTC)
Expired: May 3, 2021, 6:45 PM EDT
In force: 44 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Bamberg County, SC, Barnwell County, SC

The radar

The Charleston,SC radar (KCLX), 54 km from the middle of the area, began a volume at 22:00 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, 6:28 PM EDT	TSTM WND DMG	Olar, SC	SCDOT REPORTED A TREE FELL, PARTIALLY BLOCKING SC64 NEAR OLAR.

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, 10.0 hours before the alert went out and 102 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.

057 
WUUS52 KCAE 032201
SVRCAE
SCC009-011-032245-
/O.NEW.KCAE.SV.W.0029.210503T2201Z-210503T2245Z/

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

The National Weather Service in Columbia has issued a

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

* Until 645 PM EDT.

* At 600 PM EDT, a severe thunderstorm was located near Martin, or 9
  miles southwest of Barnwell, moving east at 40 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...
  Barnwell, Bamberg, Denmark, Rivers Bridge State Park, Ehrhardt,
  Hilda, Snelling, Olar, Kline, Govan and Bamberg County Airport.

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 3312 8119 3311 8136 3315 8151 3321 8152
      3334 8100 3325 8086 3321 8084 3318 8080
      3312 8089 3309 8088 3306 8090 3307 8092
      3310 8094 3303 8108
TIME...MOT...LOC 2200Z 257DEG 37KT 3313 8145 

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

JAQ

1 follow-up statement

208 
WWUS52 KCAE 032227
SVSCAE

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

SCC009-011-032245-
/O.CON.KCAE.SV.W.0029.000000T0000Z-210503T2245Z/
Barnwell SC-Bamberg SC-
627 PM EDT Mon May 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SOUTHEASTERN BARNWELL AND BAMBERG COUNTIES...

At 627 PM EDT, a severe thunderstorm was located 8 miles northeast of
Ulmer, or 8 miles south of Denmark, 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, Rivers Bridge State Park, Ehrhardt, Hilda, Olar,
Govan and Bamberg County Airport.

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.

Report any hail, damaging winds or flooding directly to the Columbia
National Weather Service at 803 234 4115 when it is safe to do so.
You can also send reports by Facebook or Twitter to NWSColumbia or by
e-mail at NWS.Columbia@noaa.gov.

&&

LAT...LON 3311 8133 3327 8127 3334 8100 3325 8086
      3321 8084 3318 8080 3312 8089 3309 8088
      3306 8090 3307 8092 3310 8094 3303 8108
      3312 8119
TIME...MOT...LOC 2227Z 257DEG 37KT 3319 8112 

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, 6:44 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.