Alert archive / South Carolina / Special Weather Statements in 2018

Special Weather Statement, NWS Columbia, SC

June 11, 2018Lexington County, South Carolina

NWS Columbia, SC issued this special weather statement at Jun 11, 2018, 8:22 PM EDT for Lexington County, South Carolina. It was in force for 23 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: Jun 11, 2018, 8:22 PM EDT (00:22 UTC)
Expired: Jun 11, 2018, 8:45 PM EDT
In force: 23 min
Issued by: NWS Columbia, SC

County Lexington County, SC

The radar

The Columbia radar (KCAE), 30 km from the middle of the area, began a volume at 00:25 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.4 hours before the alert went out and 308 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: 200 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 994 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -36 m²/s²
0-3 km storm-relative helicity: 18 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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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Columbia, SC wrote its last area forecast discussion before this special weather statement went out at Jun 11, 7:37 PM EDT, 45 minutes earlier.

Area forecast discussion, Jun 11, 7:37 PM EDT, 45 minutes before

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Hazardous weather outlook, Jun 11, 9:39 AM EDT, 10 hours 43 minutes before

Hazardous Weather Outlook
National Weather Service Columbia SC
939 AM EDT Mon Jun 11 2018

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-121345-
Lincoln-McDuffie-Columbia-Richmond-Burke-Lancaster-Chesterfield-
McCormick-Newberry-Fairfield-Kershaw-Edgefield-Saluda-Lexington-
Richland-Lee-Aiken-Sumter-Barnwell-Orangeburg-Calhoun-Clarendon-
Bamberg-
939 AM EDT Mon Jun 11 2018

This Hazardous Weather Outlook is for the Midlands of South Carolina
and the Central Savannah River area of Georgia.

.DAY ONE...Today and Tonight.

Numerous thunderstorms are forecast especially during the 600 pm to
900 pm time frame. Damaging wind and hail will be possible with the
thunderstorms. There may also be very heavy rainfall with possible
localized flooding.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Thunderstorms will be possible, especially during the afternoons and
evenings. A few storms could contain strong wind and locally heavy
rain.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required this afternoon or evening.

In the hours before

Local storm report, Jun 11, 6:35 PM EDT, 1 hour 47 minutes before

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Local storm report, Jun 11, 6:47 PM EDT, 1 hour 35 minutes before

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Special weather statement, Jun 11, 6:47 PM EDT, 1 hour 35 minutes before

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Local storm report, Jun 11, 6:49 PM EDT, 1 hour 33 minutes before

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Local storm report, Jun 11, 7:02 PM EDT, 1 hour 20 minutes before

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Special weather statement, Jun 11, 7:28 PM EDT, 54 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 8:45 PM EDT	Special Weather Statement	CAE	Lexington	45 min
Jun 11, 8:57 PM EDT	Areal Flood Advisory	CAE	Lexington, Richland	63 min
Jun 11, 9:05 PM EDT	Flash Flood Warning	CAE	Lexington, Richland	85 min
Jun 11, 9:13 PM EDT	Severe Thunderstorm Warning	CAE	Lexington	47 min
Jun 11, 10:03 PM EDT	Areal Flood Advisory	CAE	Newberry	117 min
Jun 12, 12:06 AM EDT	Areal Flood Advisory	CAE	Barnwell	3 hr

Nearby

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.