Alert archive / South Carolina / Freeze Watches in 2013

Freeze Watch 2, NWS Columbia, SC

March 25, 201316 counties in South Carolina; 5 counties in Georgia

NWS Columbia, SC issued this freeze watch at Mar 25, 2013, 2:58 AM EDT for 16 counties in South Carolina; 5 counties in Georgia. It took effect at Mar 26, 2013, 4:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Mar 25, 2013, 2:58 AM EDT (06:58 UTC)
In effect from: Mar 26, 2013, 4:00 AM EDT
Expired: Mar 25, 2013, 2:17 PM EDT
In force
Issued by: NWS Columbia, SC

All 21 counties

Burke County, GA, Columbia County, GA, Lincoln County, GA, McDuffie County, GA, Richmond County, GA, Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Chesterfield County, SC, Clarendon County, SC, Edgefield County, SC, Fairfield County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 28 km from the middle of the area, began a volume at 07:04 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, 7.0 hours before the alert went out and 294 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: 83 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 975 m above ground
0-6 km bulk shear: 103 kt
0-1 km storm-relative helicity: 210 m²/s²
0-3 km storm-relative helicity: 242 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze watch 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 freeze watch went out at Mar 25, 2:58 AM EDT, 0 minutes earlier.

Area forecast discussion, Mar 25, 2:58 AM EDT, 0 minutes before

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Hazardous weather outlook, Mar 25, 2:58 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
Mar 25, 12:41 PM EDT	River Flood Warning	CAE	Calhoun, Lexington, Richland	44 hr
Mar 25, 12:52 PM EDT	River Flood Advisory	CAE	Lexington, Richland	48 hr

Nearby

Freeze Watches in South Carolina, 2013 Freeze Watches in Georgia, 2013 Every freeze watch 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.