Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Columbia, SC

May 17, 2012Barnwell County, South Carolina

NWS Columbia, SC issued this special weather statement at May 17, 2012, 3:07 AM EDT for Barnwell County, South Carolina. It was in force for 53 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 17, 2012, 3:07 AM EDT (07:07 UTC)
Expired: May 17, 2012, 4:00 AM EDT
In force: 53 min
Issued by: NWS Columbia, SC

County Barnwell County, SC

The radar

The Charleston,SC radar (KCLX), 95 km from the middle of the area, began a volume at 07:08 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

Charleston AFB, SC (KCHS), launched 00:00Z, 7.1 hours before the alert went out and 169 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: 1393 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1014 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 37 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 May 17, 1:51 AM EDT, 1 hour 16 minutes earlier.

Area forecast discussion, May 17, 1:51 AM EDT, 1 hour 16 minutes before

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Hazardous weather outlook, May 16, 4:03 AM EDT, 23 hours 4 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
403 AM EDT WED MAY 16 2012

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-170815-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-
BAMBERG-
403 AM EDT WED MAY 16 2012

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

.DAY ONE...TODAY AND TONIGHT.

A SURFACE FRONTAL BOUNDARY COMBINING WITH AN UPPER DISTURBANCE AND
AFTERNOON INSTABILITY COULD PRODUCE ISOLATED TO SCATTERED SEVERE
THUNDERSTORMS. THE MAIN THREAT WOULD BE DAMAGING WIND GUSTS AND
HAIL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, May 16, 10:06 PM EDT, 5 hours 1 minute before

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Local storm report, May 16, 10:15 PM EDT, 4 hours 52 minutes before

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Local storm report, May 16, 10:15 PM EDT, 4 hours 52 minutes before

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Local storm report, May 16, 10:18 PM EDT, 4 hours 49 minutes before

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Local storm report, May 16, 10:18 PM EDT, 4 hours 49 minutes before

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Special weather statement, May 17, 3:07 AM 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
May 16, 8:03 PM EDT	Areal Flood Advisory	CAE	Kershaw, Lexington, Richland, Saluda	117 min
May 16, 8:23 PM EDT	Severe Thunderstorm Warning	CAE	Richland	37 min
May 16, 8:29 PM EDT	Special Weather Statement	CAE	Richland	61 min
May 16, 9:05 PM EDT	Special Weather Statement	CAE	Richland	55 min
May 16, 9:35 PM EDT	Flash Flood Warning	CAE	Richland	76 min
May 16, 9:42 PM EDT	River Flood Advisory	CAE	Lexington, Richland	9 hr
May 16, 9:55 PM EDT	River Flood Warning	CAE	Calhoun, Lexington, Richland	13 hr
May 17, 3:53 AM EDT	Areal Flood Advisory	CAE	Aiken, Barnwell	112 min
May 17, 12:07 PM EDT	Special Weather Statement	CAE	Chesterfield	23 min
May 17, 12:32 PM EDT	Special Weather Statement	CAE	Fairfield	43 min
May 17, 1:01 PM EDT	Severe Thunderstorm Warning	CAE	Newberry	44 min
May 17, 1:39 PM EDT	Severe Thunderstorm Warning	CAE	Newberry, Saluda	51 min
May 17, 2:39 PM EDT	Special Weather Statement	CAE	Kershaw, Lee	51 min
May 17, 3:18 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Richland, Sumter	42 min
May 17, 4:30 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Lexington	45 min
May 17, 3:27 PM EDT	Severe Thunderstorm Warning	CAE	Lincoln	33 min

Nearby

Special Weather Statements in South Carolina, 2012 Every special weather statement in 2012

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.