Alert archive / South Carolina / Special Weather Statements in 2020

Special Weather Statement, NWS Columbia, SC

May 18, 2020Lexington County, South Carolina

NWS Columbia, SC issued this special weather statement at May 18, 2020, 9:42 PM EDT for Lexington County, South Carolina. It was in force for 33 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 18, 2020, 9:42 PM EDT (01:42 UTC)
Expired: May 18, 2020, 10:15 PM EDT
In force: 33 min
Issued by: NWS Columbia, SC

County Lexington County, SC

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.7 hours before the alert went out and 288 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: 19 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 554 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 8:43 PM EDT	Special Weather Statement	CAE	Saluda	47 min
May 19, 12:28 AM EDT	Areal Flood Advisory	CAE	Lexington, Richland	4 hr
May 19, 12:38 AM EDT	Special Weather Statement	CAE	Kershaw	52 min
May 19, 1:11 AM EDT	Special Weather Statement	CAE	Lancaster	49 min
May 19, 3:39 AM EDT	Flash Flood Watch	CAE	Chesterfield, Fairfield, Kershaw, Lancaster, Lee, Lexington and 3 more	52 hr
May 19, 1:38 PM EDT	Special Weather Statement	CAE	Fairfield	37 min
May 19, 2:30 PM EDT	River Flood Warning	CAE	Calhoun, Lexington, Richland	21 days
May 19, 2:30 PM EDT	River Flood Warning	CAE	Calhoun, Richland	13 days
May 19, 2:34 PM EDT	River Flood Advisory	CAE	Lexington, Richland	16 hr
May 19, 2:39 PM EDT	River Flood Warning	CAE	Chesterfield, Marlboro	7 days
May 19, 2:44 PM EDT	Special Weather Statement	CAE	Saluda	31 min
May 19, 3:47 PM EDT	River Flood Warning	CAE	Greenwood, Newberry, Saluda	4 days

Nearby

Special Weather Statements in South Carolina, 2020 Every special weather statement in 2020

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.