Alert archive / South Carolina / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 74, NWS Greenville-Spartanburg, SC

May 11, 2008Abbeville County, Anderson County, South Carolina; Elbert County, Hart County, Georgia

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 11, 2008, 2:53 AM EDT for Abbeville County, Anderson County, South Carolina; Elbert County, Hart County, Georgia. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 11, 2008, 2:53 AM EDT (06:53 UTC)
Expired: May 11, 2008, 3:26 AM EDT
In force: 33 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Elbert County, GA, Hart County, GA, Abbeville County, SC, Anderson County, SC

The radar

The Greer radar (KGSP), 79 km from the middle of the area, began a volume at 06:56 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 11, 2:37 AM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 6.9 hours before the alert went out and 194 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: 1834 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 852 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 138 m²/s²
0-3 km storm-relative helicity: 226 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 11.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at May 11, 1:42 AM EDT, 1 hour 11 minutes earlier.

Area forecast discussion, May 11, 1:42 AM EDT, 1 hour 11 minutes before

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Hazardous weather outlook, May 10, 10:27 PM EDT, 4 hours 26 minutes before

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The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 11, 4:11 AM EDT	High Wind Warning	GSP	Avery, Buncombe, Burke, Caldwell, Graham, Haywood and 11 more	38 hr
May 11, 4:11 AM EDT	Lake Wind Advisory	GSP	Alexander, Avery, Buncombe, Burke, Cabarrus, Caldwell and 22 more	38 hr
May 11, 4:11 AM EDT	Wind Advisory	GSP	Alexander, Burke, Cabarrus, Caldwell, Catawba, Cleveland and 16 more	34 hr
May 11, 2:00 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Iredell, Mecklenburg, Rowan	60 min
May 11, 3:37 PM EDT	Severe Thunderstorm Warning	GSP	Burke, McDowell	41 min
May 11, 4:10 PM EDT	Tornado Warning	GSP	Burke, Cleveland, McDowell, Rutherford	50 min
May 11, 4:40 PM EDT	Tornado Warning	GSP	Catawba, Cleveland, Lincoln	44 min
May 11, 5:09 PM EDT	Tornado Warning	GSP	Catawba, Gaston, Lincoln	36 min
May 11, 5:31 PM EDT	Tornado Warning	GSP	Cabarrus, Iredell, Lincoln, Mecklenburg	53 min
May 11, 6:08 PM EDT	Tornado Warning	GSP	Cabarrus	35 min
May 11, 7:28 PM EDT	Severe Thunderstorm Warning	GSP	Rowan	62 min
May 11, 3:37 AM EDT	Severe Thunderstorm Warning	GSP	Anderson, Oconee, Pickens	23 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2008 Severe Thunderstorm Warnings in Georgia, 2008 Every severe thunderstorm warning in 2008

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.