Alert archive / South Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Wilmington, NC

May 3, 2021Marion County, South Carolina

NWS Wilmington, NC issued this special weather statement at May 3, 2021, 5:42 PM EDT for Marion County, South Carolina. It was in force for 63 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, 5:42 PM EDT (21:42 UTC)
Expired: May 3, 2021, 6:45 PM EDT
In force: 63 min
Issued by: NWS Wilmington, NC

County Marion County, SC

The radar

The Wilmington radar (KLTX), 91 km from the middle of the area, began a volume at 21:43 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, 9.7 hours before the alert went out and 149 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.

631 
WWUS82 KILM 032142
SPSILM

Special Weather Statement
National Weather Service Wilmington NC
542 PM EDT Mon May 3 2021
 
SCZ032-033-032245-
Marion SC-Florence SC-
542 PM EDT Mon May 3 2021

...SPECIAL WEATHER STATEMENT FOR EASTERN FLORENCE AND MARION 
COUNTIES UNTIL 645 PM EDT...

At 540 PM EDT, Doppler radar was tracking strong thunderstorms 3 
miles east of Claussen, and 5 miles southeast of Sellers, moving 
east at 30 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Marion, Mullins, Sellers, Gresham, Blue Brick, Zion, Mars Bluff, 
Gapway, Claussen, and Rains.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Thunderstorms can pose a variety of threats including gusty winds,
small hail, cloud to ground lightning, and localized flooding. It is
recommended that you remain indoors until the storm passes.

&&

LAT...LON 3424 7966 3426 7957 3424 7955 3425 7955
      3426 7951 3428 7949 3430 7938 3427 7931
      3425 7922 3418 7919 3410 7923 3409 7925
      3407 7925 3404 7928 3403 7930 3401 7931
      3400 7933 3398 7933 3389 7941 3407 7965
TIME...MOT...LOC 2138Z 265DEG 22KT 3411 7956 

$$

SRP

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 12:53 PM EDT	Special Weather Statement	ILM	Bladen	52 min
May 3, 1:27 PM EDT	Special Weather Statement	ILM	Brunswick	33 min
May 3, 6:26 PM EDT	Severe Thunderstorm Warning	ILM	Columbus	49 min
May 3, 6:59 PM EDT	Special Marine Warning	ILM		31 min
May 3, 7:09 PM EDT	Special Weather Statement	ILM	Brunswick	51 min
May 3, 7:30 PM EDT	Special Marine Warning	ILM		30 min
May 3, 7:32 PM EDT	Special Marine Warning	ILM		28 min
May 3, 7:59 PM EDT	Beach Hazards Statement	ILM	New Hanover, Pender	24 hr
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, 5:44 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, 6:43 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

Nearby

Special Weather Statements in South Carolina, 2021 Every special weather statement 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.