Alert archive / Georgia / Special Weather Statements in 2018

Special Weather Statement, NWS Columbia, SC

July 17, 2018Edgefield County, South Carolina; Lincoln County, McDuffie County, Georgia

NWS Columbia, SC issued this special weather statement at Jul 17, 2018, 10:40 PM EDT for Edgefield County, South Carolina; Lincoln County, McDuffie County, Georgia. It was in force for 50 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 17, 2018, 10:40 PM EDT (02:40 UTC)
Expired: Jul 17, 2018, 11:30 PM EDT
In force: 50 min
Issued by: NWS Columbia, SC

Counties Lincoln County, GA, McDuffie County, GA, Edgefield County, SC

The radar

The Columbia radar (KCAE), 127 km from the middle of the area, began a volume at 02:42 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 00:00Z, 2.7 hours before the alert went out and 355 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: 205 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1602 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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
Jul 17, 10:52 PM EDT	Special Weather Statement	CAE	Lexington	38 min
Jul 17, 11:23 PM EDT	Areal Flood Advisory	CAE	Aiken, Lexington, Richland, Saluda	3 hr
Jul 18, 2:32 PM EDT	Special Weather Statement	CAE	Sumter	58 min

Nearby

Special Weather Statements in Georgia, 2018 Special Weather Statements in South Carolina, 2018 Every special weather statement in 2018

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.