Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 8, NWS Wilmington, NC

May 3, 2021Florence County, Williamsburg County, South Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at May 3, 2021, 5:25 PM EDT for Florence County, Williamsburg County, South Carolina. It was in force for 21 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, 5:25 PM EDT (21:25 UTC)
Expired: May 3, 2021, 5:46 PM EDT
In force: 21 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Florence County, SC, Williamsburg County, SC

The radar

The Columbia radar (KCAE), 118 km from the middle of the area, began a volume at 21:30 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 nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.4 hours before the alert went out and 107 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.

749 
WUUS52 KILM 032125
SVRILM
SCC041-089-032200-
/O.NEW.KILM.SV.W.0008.210503T2125Z-210503T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington NC
525 PM EDT Mon May 3 2021

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Southern Florence County in northeastern South Carolina...
  Northwestern Williamsburg County in northeastern South Carolina...

* Until 600 PM EDT.

* At 525 PM EDT, a severe thunderstorm was located over Hebron, or
  near Lake City, moving northeast at 35 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Minor hail damage to vehicles is possible. Expect wind 
           damage to trees and power lines.

* Locations impacted include...
  Lake City, Kingstree, Pamplico, Hyman, Hannah, Cades, Hebron,
  Friendfield, New Hope, Evergreen, Scranton, Coward and Lake City
  Community Hospital.

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 3381 7994 3382 7991 3388 7988 3389 7988
      3389 7995 3409 7967 3390 7943 3366 7987
      3377 8000
TIME...MOT...LOC 2125Z 230DEG 32KT 3381 7984 

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

VAO

1 follow-up statement

399 
WWUS52 KILM 032146
SVSILM

Severe Weather Statement
National Weather Service Wilmington NC
546 PM EDT Mon May 3 2021

SCC041-089-032156-
/O.CAN.KILM.SV.W.0008.000000T0000Z-210503T2200Z/
Florence SC-Williamsburg SC-
546 PM EDT Mon May 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN FLORENCE AND
NORTHWESTERN WILLIAMSBURG COUNTIES IS CANCELLED...
        
The storm which prompted the warning has weakened below severe 
limits. Therefore, the warning has been cancelled.  However gusty 
winds are still possible with this thunderstorm.

LAT...LON 3381 7994 3382 7991 3388 7988 3389 7988
      3389 7995 3409 7967 3390 7943 3366 7987
      3377 8000
TIME...MOT...LOC 2143Z 230DEG 32KT 3393 7966 

$$

VAO

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 4:45 PM EDT	Severe Thunderstorm Warning	ILM	Darlington, Florence	60 min
May 3, 5:23 PM EDT	Special Weather Statement	ILM	Dillon	37 min
May 3, 5:42 PM EDT	Special Weather Statement	ILM	Marion	63 min
May 3, 5:44 PM EDT	Special Weather Statement	ILM	Williamsburg	31 min
May 3, 5:50 PM EDT	Severe Thunderstorm Warning	ILM	Horry, Marion	40 min
May 3, 6:13 PM EDT	Severe Thunderstorm Warning	ILM	Georgetown, Horry, Marion, Williamsburg	32 min
May 3, 6:26 PM EDT	Severe Thunderstorm Warning	ILM	Horry	49 min
May 3, 6:43 PM EDT	Severe Thunderstorm Warning	ILM	Horry	32 min
May 3, 6:55 PM EDT	Special Weather Statement	ILM	Georgetown	65 min
May 3, 7:28 PM EDT	Special Weather Statement	ILM	Georgetown	32 min
May 3, 7:59 PM EDT	Beach Hazards Statement	ILM	Georgetown, Horry	24 hr

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.