Alert archive / South Carolina / Special Weather Statements in 2013

Special Weather Statement, NWS Columbia, SC

July 12, 2013McCormick County, South Carolina; Lincoln County, Georgia

NWS Columbia, SC issued this special weather statement at Jul 12, 2013, 9:33 PM EDT for McCormick County, South Carolina; Lincoln County, Georgia. It was in force for 57 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 12, 2013, 9:33 PM EDT (01:33 UTC)
Expired: Jul 12, 2013, 10:30 PM EDT
In force: 57 min
Issued by: NWS Columbia, SC

Counties Lincoln County, GA, McCormick County, SC

The radar

The Greer radar (KGSP), 115 km from the middle of the area, began a volume at 01:35 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, 1.6 hours before the alert went out and 201 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: 2093 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 916 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: -14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Jul 12, 7:36 PM EDT, 1 hour 57 minutes earlier.

Area forecast discussion, Jul 12, 7:36 PM EDT, 1 hour 57 minutes before

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Hazardous weather outlook, Jul 12, 4:22 AM EDT, 17 hours 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
422 AM EDT FRI JUL 12 2013

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-130830-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-
BAMBERG-
422 AM EDT FRI JUL 12 2013

...FLASH FLOOD WATCH IN EFFECT UNTIL NOON EDT TODAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL GEORGIA AND
CENTRAL SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLASH FLOOD WATCH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

MORE HEAVY RAIN IS POSSIBLE ON SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

In the hours before

Special weather statement, Jul 12, 5:28 PM EDT, 4 hours 5 minutes before

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Special weather statement, Jul 12, 7:43 PM EDT, 1 hour 50 minutes before

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Special weather statement, Jul 12, 8:36 PM EDT, 57 minutes before

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Special weather statement, Jul 12, 9:33 PM EDT, 0 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
Jul 12, 8:30 PM EDT	Areal Flood Advisory	CAE	Aiken, Calhoun, Lexington, Orangeburg	60 min
Jul 12, 8:36 PM EDT	Special Weather Statement	CAE	McCormick	24 min
Jul 12, 9:41 PM EDT	Areal Flood Advisory	CAE	McCormick	2 hr
Jul 13, 3:46 AM EDT	Flash Flood Watch	CAE	Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more	23 hr
Jul 13, 5:15 PM EDT	Areal Flood Advisory	CAE	Clarendon, Sumter	60 min
Jul 13, 6:52 PM EDT	Areal Flood Advisory	CAE	Aiken, Bamberg, Lexington, Orangeburg	53 min
Jul 13, 7:48 PM EDT	Areal Flood Advisory	CAE	Orangeburg	57 min

Nearby

Special Weather Statements in South Carolina, 2013 Special Weather Statements in Georgia, 2013 Every special weather statement in 2013

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.