Alert archive / South Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Columbia, SC

July 9, 2021Lexington County, South Carolina

NWS Columbia, SC issued this special weather statement at Jul 9, 2021, 3:39 PM EDT for Lexington County, South Carolina. It was in force for 36 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: Jul 9, 2021, 3:39 PM EDT (19:39 UTC)
Expired: Jul 9, 2021, 4:15 PM EDT
In force: 36 min
Issued by: NWS Columbia, SC

County Lexington County, SC

The radar

The Columbia radar (KCAE), 17 km from the middle of the area, began a volume at 19:41 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, 7.7 hours before the alert went out and 140 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: 1551 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 720 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: -14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

602 
WWUS82 KCAE 091939
SPSCAE

Special Weather Statement
National Weather Service Columbia SC
339 PM EDT Fri Jul 9 2021
 
SCZ027-028-030-031-037-135-136-092015-
Central Orangeburg SC-Lexington SC-Aiken SC-Calhoun SC-Richland SC-
Sumter SC-Northwestern Orangeburg SC-
339 PM EDT Fri Jul 9 2021

...Strong Thunderstorms Will Impact Portions of northwestern Central
Orangeburg...southern Lexington...northeastern Aiken...northwestern
Calhoun...southeastern Richland...western Sumter and Northwestern
Orangeburg Counties Until 415 PM EDT....

At 338 PM EDT...National Weather Service doppler radar indicated
strong thunderstorms along a line extending from Oak Grove to 9 miles
north of Aiken State Park, moving east at 30 mph.

  HAZARD...strong winds 45 to 55 mph.

  IMPACT...expect minor damage to tree limbs and blowing around of 
           light, unsecured objects.

Some locations in the path of these storms include...
Columbia, Lexington, West Columbia, Cayce, Forest Acres, Springdale,
St. Andrews, Oak Grove, McEntire Air Base, Red Bank, South Congaree,
Pine Ridge, Gaston, Eastover, SC State Fair Grounds, West Columbia
Riverwalk, Five Points, Congaree National Park, Hopkins and Horrel
Hill.

This includes the following highways...
 Interstate 126 between mile markers 0 and 3.
 Interstate 20 in South Carolina between mile markers 52 and 66.
 Interstate 26 between mile markers 106 and 135.
 Interstate 77 between mile markers 0 and 12.

LAT...LON 3397 8060 3345 8117 3366 8160 3406 8113
TIME...MOT...LOC 1938Z 288DEG 25KT 3399 8115 3368 8149 

$$

awp

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 9, 2:16 PM EDT	Special Weather Statement	CAE	McCormick	29 min
Jul 9, 2:42 PM EDT	Special Weather Statement	CAE	Saluda	33 min
Jul 9, 3:15 PM EDT	Special Weather Statement	CAE	Lexington	30 min
Jul 9, 3:21 PM EDT	Special Weather Statement	CAE	Kershaw	24 min
Jul 9, 3:46 PM EDT	Special Weather Statement	CAE	Kershaw, Lee	44 min
Jul 9, 4:14 PM EDT	Special Weather Statement	CAE	Chesterfield	46 min
Jul 9, 4:23 PM EDT	Special Weather Statement	CAE	Clarendon, Sumter	37 min
Jul 9, 4:32 PM EDT	Special Weather Statement	CAE	Calhoun, Orangeburg	43 min
Jul 9, 4:48 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lancaster	27 min
Jul 9, 5:03 PM EDT	Special Weather Statement	CAE	Clarendon	27 min
Jul 9, 5:14 PM EDT	Special Weather Statement	CAE	Orangeburg	31 min
Jul 9, 3:21 PM EDT	Special Weather Statement	CAE	Lincoln	24 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.