Alert archive / South Carolina / Special Weather Statements in 2013

Special Weather Statement, NWS Columbia, SC

July 31, 20139 counties in South Carolina

NWS Columbia, SC issued this special weather statement at Jul 31, 2013, 8:34 PM EDT for 9 counties in South Carolina. It was in force for 86 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 31, 2013, 8:34 PM EDT (00:34 UTC)
Expired
Jul 31, 2013, 10:00 PM EDT
In force
86 min
Issued by
NWS Columbia, SC

Counties Bamberg County, SC, Calhoun County, SC, Chesterfield County, SC, Clarendon County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Orangeburg County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 67 km from the middle of the area, began a volume at 00:37 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

Newport, NC (KMHX), launched 00:00Z, 0.6 hours before the alert went out and 338 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-pSkew-T log-p diagram, Newport, NC at 00:00Z on 2013-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 201 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Newport, NC at 00:00Z on 2013-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
201 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
1037 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.2

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 31, 8:14 PM EDT, 20 minutes earlier.

Area forecast discussion, Jul 31, 8:14 PM EDT, 20 minutes before
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Hazardous weather outlook, Jul 31, 5:24 AM EDT, 15 hours 10 minutes before
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In the hours before

Special weather statement, Jul 31, 5:38 PM EDT, 2 hours 56 minutes before
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Special weather statement, Jul 31, 6:16 PM EDT, 2 hours 18 minutes before
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Special weather statement, Jul 31, 6:47 PM EDT, 1 hour 47 minutes before
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Special weather statement, Jul 31, 6:47 PM EDT, 1 hour 47 minutes before
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Special weather statement, Jul 31, 7:40 PM EDT, 54 minutes before
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Special weather statement, Jul 31, 8:34 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 3:33 PM EDTSpecial Weather StatementCAELancaster42 min
Aug 1, 5:33 PM EDTSpecial Weather StatementCAENewberry57 min
Aug 1, 6:17 PM EDTSevere Thunderstorm WarningCAEFairfield, Kershaw43 min
Aug 1, 6:42 PM EDTSevere Thunderstorm WarningCAELexington, Newberry, Richland, Saluda63 min
Aug 1, 7:37 PM EDTSpecial Weather StatementCAEFairfield53 min
Aug 1, 6:08 PM EDTSpecial Weather StatementCAEBurke52 min

Nearby

Special Weather Statements in South Carolina, 2013Every 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.