Alert archive / South Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Wilmington, NC

May 4, 2021Dillon County, Florence County, South Carolina

NWS Wilmington, NC issued this special weather statement at May 4, 2021, 6:26 PM EDT for Dillon County, Florence County, South Carolina. It was in force for 49 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 4, 2021, 6:26 PM EDT (22:26 UTC)
Expired: May 4, 2021, 7:15 PM EDT
In force: 49 min
Issued by: NWS Wilmington, NC

Counties Dillon County, SC, Florence County, SC

The radar

The Columbia radar (KCAE), 118 km from the middle of the area, began a volume at 22:28 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, 10.4 hours before the alert went out and 133 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: 573 J/kg
Mixed-layer CIN: -149 J/kg
Mixed-layer LCL: 1000 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 48 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

025 
WWUS82 KILM 042226
SPSILM

Special Weather Statement
National Weather Service Wilmington NC
626 PM EDT Tue May 4 2021
 
NCZ087-SCZ017-023-024-032-033-042315-
Robeson NC-Marion SC-Marlboro SC-Dillon SC-Florence SC-Darlington SC-
626 PM EDT Tue May 4 2021

...SPECIAL WEATHER STATEMENT FOR SOUTH CENTRAL ROBESON...FLORENCE...
DILLON...SOUTHEASTERN DARLINGTON...NORTHWESTERN MARION AND
SOUTHEASTERN MARLBORO COUNTIES UNTIL 715 PM EDT...

At 625 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Oak Grove to 6 miles west of Woods Bay
State Park. Movement was east at 35 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Florence, Marion, Dillon, Darlington, Mullins, Timmonsville, Latta,
Pamplico, Quinby, Lake View, Sellers, Fork, Blue Brick, Zion, Mars
Bluff, Brownsville, Cartersville, Florence Darlington Technical
College Main Campus, New Hope and Sardis.

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 storms pass.

&&

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
southeastern North Carolina...and northeastern South Carolina.

LAT...LON 3443 7975 3445 7900 3388 7958 3389 7995
      3395 7997 3399 7989 3401 7991 3401 7993
      3402 7995 3402 7996 3404 7999 3408 8003
      3409 8008 3410 8008
TIME...MOT...LOC 2225Z 265DEG 32KT 3439 7955 3395 8010 

$$

VAO

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 9:04 PM EDT	Special Marine Warning	ILM		26 min
May 3, 9:31 PM EDT	Special Marine Warning	ILM		44 min
May 3, 10:14 PM EDT	Special Marine Warning	ILM		61 min
May 4, 6:12 AM EDT	Small Craft Advisory	ILM		38 hr
May 4, 5:57 PM EDT	Severe Thunderstorm Warning	ILM	Robeson	33 min
May 4, 6:30 PM EDT	Severe Thunderstorm Warning	ILM	Robeson	30 min
May 4, 6:55 PM EDT	Special Weather Statement	ILM	Bladen, Robeson	35 min
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, 5:08 PM EDT	Severe Thunderstorm Warning	ILM	Darlington, Marlboro	52 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

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.