Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 14, NWS Wilmington, NC

May 4, 2021Darlington County, Marlboro County, South Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at May 4, 2021, 5:08 PM EDT for Darlington County, Marlboro County, South Carolina. It was in force for 52 min. 7 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 4, 2021, 5:08 PM EDT (21:08 UTC)
Expired: May 4, 2021, 6:00 PM EDT
In force: 52 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Darlington County, SC, Marlboro County, SC

The radar

The Columbia radar (KCAE), 129 km from the middle of the area, began a volume at 21:09 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 4, 5:34 PM EDT	TSTM WND DMG	2 N North Hartsville, SC	SC PATROL REPORTS MULTIPLE TREES DOWN IN ROADWAYS NORTH AND NORTHEAST OF THE HARTSVILLE AREA. SC 102 & PATRICK HWY. LAKEVIEW BLVD & JESSAMINE DR. SUN VALLEY DR & OUSLEYDALE RD.
May 4, 5:35 PM EDT	TSTM WND DMG	4 Nne Clyde, SC	* 1 INJ * LARGE TREE ON A CAMPER ON EASTERLING LANDING RD.
May 4, 5:35 PM EDT	TSTM WND DMG	4 Nne Clyde, SC	OVERTURNED TRAILER ON EASTERLING LANDING RD.
May 4, 5:50 PM EDT	TSTM WND DMG	2 Se Wallace, SC	SC PATROL REPORTS TREE DOWN ON ROADWAY AT HICKORY GROVE RD AND SC-9. TIME ESTIMATED VIA RADAR.
May 4, 5:50 PM EDT	TSTM WND DMG	6 Ene Wallace, SC	SC PATROL REPORTS TREE DOWN ON ROADWAY AT AARON TEMPLE CHURCH RD AND OLD WIRE RD W. TIME ESTIMATED VIA RADAR.
May 4, 6:00 PM EDT	TSTM WND DMG	4 Ssw Tatum, SC	SC PATROL REPORTS TREE DOWN ON ROADWAY AT SANDY GROVE RD AND HEBRON DUNBAR RD. TIME ESTIMATED VIA RADAR.
May 4, 6:00 PM EDT	TSTM WND DMG	5 Wnw Blenheim, SC	SC PATROL REPORTS TREE DOWN ON ROADWAY AT ZION RD AND MARLBORO WAY. TIME ESTIMATED VIA 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 4, 4:56 PM EDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.1 hours before the alert went out and 170 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: 463 J/kg
Mixed-layer CIN: -235 J/kg
Mixed-layer LCL: 935 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

976 
WUUS52 KILM 042108
SVRILM
SCC031-069-042200-
/O.NEW.KILM.SV.W.0014.210504T2108Z-210504T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington NC
508 PM EDT Tue May 4 2021

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Northern Darlington County in northeastern South Carolina...
  Marlboro County in northeastern South Carolina...

* Until 600 PM EDT.

* At 508 PM EDT, a severe thunderstorm was located near Cassatt, or
  16 miles northeast of Camden, moving east at 60 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect wind damage to trees and power lines.

* Locations impacted include...
  Bennettsville, Hartsville, Clio, North Hartsville, Dovesville, Mont
  Clare, Auburn, Wallace, Clyde, Chavistown, Floyd, Dunbar,
  Kellytown, Society Hill, Blenheim, Tatum and Carolina Pines
  Regional Medical Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3449 8005 3450 7998 3449 7996 3449 7989
      3453 7983 3461 7981 3461 7978 3465 7980
      3469 7987 3474 7989 3477 7993 3481 7993
      3481 7969 3451 7951 3442 7956 3431 8016
      3437 8018 3433 8024 3437 8029
TIME...MOT...LOC 2108Z 247DEG 50KT 3444 8042 

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

VAO

1 follow-up statement

492 
WWUS52 KILM 042118
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
518 PM EDT Tue May 4 2021

SCC031-069-042200-
/O.CON.KILM.SV.W.0014.000000T0000Z-210504T2200Z/
Darlington SC-Marlboro SC-
518 PM EDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR NORTHERN DARLINGTON AND MARLBORO COUNTIES...

At 517 PM EDT, a severe thunderstorm was located near Carolina
Sandhills Wildlife Refuge, or 13 miles northwest of Hartsville,
moving northeast at 60 mph.

HAZARD...70 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Bennettsville, Hartsville, Clio, North Hartsville, Dovesville, Mont
Clare, Auburn, Wallace, Clyde, Chavistown, Floyd, Dunbar, Kellytown,
Society Hill, Blenheim, Tatum and Carolina Pines Regional Medical
Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3449 8005 3450 7998 3449 7996 3449 7989
      3453 7983 3461 7981 3461 7978 3465 7980
      3469 7987 3474 7989 3477 7993 3481 7993
      3481 7969 3451 7951 3442 7956 3431 8016
      3437 8018 3433 8024 3437 8029
TIME...MOT...LOC 2117Z 247DEG 50KT 3449 8027 

HAIL...0.75IN
WIND...70MPH
 
$$

VAO

The office that day

Everything else NWS Wilmington, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 3, 8:47 PM EDT	Severe Thunderstorm Warning	ILM	Georgetown	43 min
May 4, 4:50 PM EDT	Special Weather Statement	ILM	Georgetown	40 min
May 4, 5:57 PM EDT	Severe Thunderstorm Warning	ILM	Darlington, Dillon, Marlboro	33 min
May 4, 6:26 PM EDT	Special Weather Statement	ILM	Dillon, Florence	49 min
May 4, 6:30 PM EDT	Severe Thunderstorm Warning	ILM	Dillon	30 min
May 4, 7:04 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Williamsburg	41 min
May 4, 7:42 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Georgetown, Marion, Williamsburg	33 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.