Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Columbia, SC

April 27, 2012Fairfield County, Kershaw County, South Carolina

NWS Columbia, SC issued this special weather statement at Apr 27, 2012, 4:21 PM EDT for Fairfield County, Kershaw County, South Carolina. It was in force for 54 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: Apr 27, 2012, 4:21 PM EDT (20:21 UTC)
Expired: Apr 27, 2012, 5:15 PM EDT
In force: 54 min
Issued by: NWS Columbia, SC

Counties Fairfield County, SC, Kershaw County, SC

The radar

The Columbia radar (KCAE), 75 km from the middle of the area, began a volume at 20:23 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 12:00Z, 8.4 hours before the alert went out and 172 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: 75 J/kg
Mixed-layer CIN: -239 J/kg
Mixed-layer LCL: 1255 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 4:58 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lee	47 min
Apr 27, 5:36 PM EDT	Severe Thunderstorm Warning	CAE	Lee	24 min
Apr 27, 6:30 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield	45 min
Apr 27, 7:11 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield	49 min
Apr 27, 7:52 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Sumter	23 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.