Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 9, NWS Wilmington, NC

May 3, 2021Horry County, Marion County, South Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at May 3, 2021, 5:50 PM EDT for Horry County, Marion County, South Carolina. It was in force for 40 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, 5:50 PM EDT (21:50 UTC)
Expired: May 3, 2021, 6:30 PM EDT
In force: 40 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Horry County, SC, Marion County, SC

The radar

The Wilmington radar (KLTX), 93 km from the middle of the area, began a volume at 21:52 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, 6:05 PM EDT	HAIL 1.25	Rains, SC	PUBLIC REPORTED HAIL BIGGER THAN A QUARTER (AROUND 1.25-1.5 BASED ON PIC) IN RAINS, SC

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.8 hours before the alert went out and 146 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.

690 
WUUS52 KILM 032150
SVRILM
SCC051-067-032230-
/O.NEW.KILM.SV.W.0009.210503T2150Z-210503T2230Z/

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

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Northwestern Horry County in northeastern South Carolina...
  Northern Marion County in northeastern South Carolina...

* Until 630 PM EDT.

* At 549 PM EDT, a severe thunderstorm was located near Marion,
  moving east at 35 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Marion, Mullins, Galivants Ferry, Gapway, Rains, and Nichols.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3420 7954 3424 7903 3399 7903 3403 7951
      3410 7952 3411 7952 3412 7953 3413 7952
      3413 7953
TIME...MOT...LOC 2149Z 266DEG 29KT 3412 7943 

HAIL...1.25IN
WIND...60MPH
 
$$

SRP

3 follow-up statements

644 
WWUS52 KILM 032204
SVSILM

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

SCC051-067-032230-
/O.CON.KILM.SV.W.0009.000000T0000Z-210503T2230Z/
Horry SC-Marion SC-
604 PM EDT Mon May 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR NORTHWESTERN HORRY AND NORTHEASTERN MARION COUNTIES...

At 603 PM EDT, a severe thunderstorm was located near Rains, moving 
east at 35 mph. This storm has a history of producing large hail.

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

SOURCE...Radar indicated.

IMPACT...People and animals outdoors may become injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to trees and power lines.

Locations impacted include...
Galivants Ferry, Gapway, and Rains.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy 
structure and stay away from windows.

&&

LAT...LON 3419 7942 3424 7903 3399 7903 3406 7942
TIME...MOT...LOC 2202Z 266DEG 29KT 3413 7930 

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

SRP

550 
WWUS52 KILM 032215
SVSILM

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

SCC051-067-032230-
/O.CON.KILM.SV.W.0009.000000T0000Z-210503T2230Z/
Horry SC-Marion SC-
615 PM EDT Mon May 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR NORTHWESTERN HORRY AND NORTHEASTERN MARION COUNTIES...

At 614 PM EDT, a severe thunderstorm was located between Gapway and 
Galivants Ferry, moving east at 35 mph. This storm has a history of 
producing large hail.

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

SOURCE...Radar indicated.

IMPACT...People and animals may be injured if caught outdoors. 
         Expect hail damage to roofs, siding, windows, and vehicles. 
         Expect wind damage to trees and power lines.

Locations impacted include...
Gapway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 3417 7927 3420 7903 3402 7903 3407 7928
TIME...MOT...LOC 2214Z 270DEG 30KT 3411 7917 

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

SRP

730 
WWUS52 KILM 032230
SVSILM

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

SCC051-067-032239-
/O.EXP.KILM.SV.W.0009.000000T0000Z-210503T2230Z/
Horry SC-Marion SC-
630 PM EDT Mon May 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HORRY AND
NORTHEASTERN MARION COUNTIES WILL EXPIRE AT 630 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

LAT...LON 3417 7927 3420 7903 3402 7903 3407 7928
TIME...MOT...LOC 2229Z 266DEG 29KT 3412 7906 

$$

SRP

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, 5:25 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Williamsburg	21 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, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.