Alert archive / South Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Wilmington, NC

August 19, 2021Darlington County, South Carolina

NWS Wilmington, NC issued this special weather statement at Aug 19, 2021, 8:52 PM EDT for Darlington County, South Carolina. It was in force for 53 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
Aug 19, 2021, 8:52 PM EDT (00:52 UTC)
Expired
Aug 19, 2021, 9:45 PM EDT
In force
53 min
Issued by
NWS Wilmington, NC
Hail
0.00 in
Wind
30

County Darlington County, SC

The radar

The Columbia radar (KCAE), 119 km from the middle of the area, began a volume at 00:54 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.9 hours before the alert went out and 190 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 00:00Z on 2021-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 543 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2021-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
543 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
1590 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

920 
WWUS82 KILM 200052
SPSILM

Special Weather Statement
National Weather Service Wilmington NC
852 PM EDT Thu Aug 19 2021
 
SCZ017-023-200145-
Marlboro SC-Darlington SC-
852 PM EDT Thu Aug 19 2021

...A strong thunderstorm will impact portions of Darlington and
southwestern Marlboro Counties through 945 PM EDT...

At 852 PM EDT, Doppler radar was tracking a strong thunderstorm over
Auburn, or near Hartsville, moving east at 10 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Hartsville, Darlington, North Hartsville, Dovesville, Mont Clare,
Lydia, Darlington Raceway, Auburn, Swift Creek, Clyde,
Mechanicsville, Oats, Floyd, Kellytown, Florence Darlington Technical
College Main Campus, Society Hill and Carolina Pines Regional Medical
Center.

This includes the following highways...
 Interstate 20 between mile markers 126 and 133.
 Interstate 95 IN South Carolina mile marker 146 and near mile marker
167.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3449 8005 3450 7998 3449 7996 3449 7989
      3453 7983 3456 7982 3458 7971 3430 7965
      3430 7967 3429 7968 3430 7973 3425 7976
      3425 7981 3422 7985 3419 8011 3423 8011
      3433 8018 3436 8018 3433 8024 3437 8029
TIME...MOT...LOC 0052Z 266DEG 8KT 3439 8001 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

$$

21

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 10:45 PM EDTSpecial Weather StatementILMRobeson30 min
Aug 20, 3:46 AM EDTSmall Craft AdvisoryILM25 hr
Aug 20, 3:53 AM EDTCoastal Flood AdvisoryILMNew Hanover19 hr
Aug 20, 1:36 PM EDTSpecial Weather StatementILMNew Hanover39 min
Aug 20, 2:13 PM EDTSpecial Weather StatementILMNew Hanover47 min
Aug 20, 2:22 PM EDTSevere Thunderstorm WarningILMNew Hanover23 min
Aug 20, 2:29 PM EDTAreal Flood AdvisoryILMBrunswick, New Hanover, Pender75 min
Aug 20, 3:03 PM EDTSpecial Weather StatementILMNew Hanover27 min

Nearby

Special Weather Statements in South Carolina, 2021Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.