Alert archive / South Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Columbia, SC

July 16, 2021Chesterfield County, South Carolina

NWS Columbia, SC issued this special weather statement at Jul 16, 2021, 4:05 PM EDT for Chesterfield County, South Carolina. It was in force for 40 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 16, 2021, 4:05 PM EDT (20:05 UTC)
Expired: Jul 16, 2021, 4:45 PM EDT
In force: 40 min
Issued by: NWS Columbia, SC

County Chesterfield County, SC

The radar

The Columbia radar (KCAE), 107 km from the middle of the area, began a volume at 20:05 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 12:00Z, 8.1 hours before the alert went out and 175 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: 172 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 1372 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

239 
WWUS82 KCAE 162005
SPSCAE

Special Weather Statement
National Weather Service Columbia SC
405 PM EDT Fri Jul 16 2021
 
SCZ016-022-162045-
Chesterfield SC-Kershaw SC-
405 PM EDT Fri Jul 16 2021

...Strong Thunderstorms Will Impact Portions of central Chesterfield
and northeastern Kershaw Counties Until 445 PM EDT....

At 404 PM EDT...National Weather Service doppler radar indicated a
strong thunderstorm near Carolina Sandhills Wildlife Refuge, or 12
miles northwest of Hartsville, moving east at 10 mph.

  HAZARD...gusty winds 40 to 50 mph, pea sized hail, excessive cloud 
           to ground lightning and localized minor flooding.

  IMPACT...expect minor damage to tree limbs and blowing around of 
           light, unsecured objects. Minor hail damage to plants, 
           trees and crops is possible. Damage to windshields is 
           unlikely. All outdoor activities should cease. Move 
           indoors immediately. Localized, minor flooding of low 
           lying and poor drainage areas is also possible.

Some locations in the path of this storm include...
Carolina Sandhills Wildlife Refuge, Mt Pisgah, Mcbee, Jefferson,
Patrick, Bethune, Alligator Fire Station, Middendorf and Bay Springs
Fire Station.

Heavy rainfall is occurring with this storm, and may cause localized
flooding. Do not drive your vehicle through flooded roadways.

Move indoors immediately.  Excessive cloud to ground lightning is
occurring with this storm. If you can hear thunder, you are close
enough to be struck by lightning.

LAT...LON 3449 7997 3450 7999 3449 8003 3449 8005
      3439 8023 3438 8031 3446 8046 3458 8051
      3461 8041 3465 8043 3472 8003 3450 7991
TIME...MOT...LOC 2004Z 247DEG 7KT 3453 8017 

$$

CJR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 1:21 PM EDT	Special Weather Statement	CAE	Newberry	24 min
Jul 16, 1:58 PM EDT	Special Weather Statement	CAE	Newberry	32 min
Jul 16, 2:02 PM EDT	Special Weather Statement	CAE	Edgefield	28 min
Jul 16, 2:23 PM EDT	Special Weather Statement	CAE	Saluda	37 min
Jul 16, 2:45 PM EDT	Special Weather Statement	CAE	Newberry	30 min
Jul 16, 3:18 PM EDT	Special Weather Statement	CAE	Lexington	27 min
Jul 16, 3:34 PM EDT	Special Weather Statement	CAE	Lexington	26 min
Jul 16, 3:47 PM EDT	Areal Flood Advisory	CAE	Fairfield, Kershaw, Lexington, Richland	58 min
Jul 16, 3:59 PM EDT	Flash Flood Warning	CAE	Lexington, Richland	3 hr
Jul 16, 4:07 PM EDT	Special Weather Statement	CAE	Lexington, Richland	23 min
Jul 16, 4:39 PM EDT	Areal Flood Advisory	CAE	Aiken, Calhoun, Fairfield, Kershaw, Lexington, Orangeburg and 2 more	2 hr
Jul 16, 12:36 PM EDT	Special Weather Statement	CAE	Lincoln	24 min
Jul 16, 12:40 PM EDT	Areal Flood Advisory	CAE	Lincoln, McDuffie	65 min
Jul 16, 7:21 PM EDT	Special Weather Statement	CAE	Richmond	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.