Alert archive / South Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Columbia, SC

July 16, 2021Lexington County, Richland County, South Carolina

NWS Columbia, SC issued this special weather statement at Jul 16, 2021, 4:07 PM EDT for Lexington County, Richland County, South Carolina. It was in force for 23 min. 2 reports 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: Jul 16, 2021, 4:07 PM EDT (20:07 UTC)
Expired: Jul 16, 2021, 4:30 PM EDT
In force: 23 min
Issued by: NWS Columbia, SC

Counties Lexington County, SC, Richland County, SC

The radar

The Columbia radar (KCAE), 17 km from the middle of the area, began a volume at 20:10 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
Jul 16, 4:09 PM EDT	TSTM WND GST 50	3 Se Columbia, SC	RC WINDS MESONET SITE RECORDED A 50 MPH WIND GUST.
Jul 16, 4:16 PM EDT	TSTM WND GST 40	3 Se Columbia, SC	KCUB ASOS MEASURED A 35 KT WIND GUST.

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, 8.1 hours before the alert went out and 160 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: 550 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 974 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

504 
WWUS82 KCAE 162007
SPSCAE

Special Weather Statement
National Weather Service Columbia SC
407 PM EDT Fri Jul 16 2021
 
SCZ021-022-027-028-037-162030-
Fairfield SC-Lexington SC-Calhoun SC-Richland SC-Kershaw SC-
407 PM EDT Fri Jul 16 2021

...Strong Thunderstorms Will Impact Portions of southeastern
Fairfield...central Lexington...northwestern Calhoun...Richland and
southwestern Kershaw Counties Until 430 PM EDT....

At 406 PM EDT...National Weather Service doppler radar indicated
strong thunderstorms along a line extending from near Lake Carolina
to near SC State Farmer's Market, moving northeast at 25 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 these storms include...
Columbia, Lexington, West Columbia, Cayce, Irmo, Forest Acres,
Springdale, St. Andrews, Dentsville, Oak Grove, McEntire Air Base,
Highway 6 at Lake Murray Dam, Red Bank, South Congaree, Pine Ridge,
Gaston, Arcadia Lakes, Columbia International University, Harbison
State Forest and Sesquicentennial State Park.

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

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

This includes the following highways...
 Interstate 126 between mile markers 0 and 3.
 Interstate 20 in South Carolina between mile markers 47 and 87.
 Interstate 26 between mile markers 99 and 123.
 Interstate 77 between mile markers 0 and 30.

LAT...LON 3429 8073 3388 8076 3377 8131 3393 8136
      3425 8110
TIME...MOT...LOC 2006Z 239DEG 24KT 3419 8092 3388 8104 

$$

LCV

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, 4:05 PM EDT	Special Weather Statement	CAE	Chesterfield	40 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.