Alert archive / Georgia / Tornado Watches in 2010

Tornado Watch 759

November 30, 201085 counties in Georgia; 16 counties in North Carolina; 21 counties in South Carolina

The Storm Prediction Center issued this tornado watch at Nov 30, 2010, 2:34 PM EST for 85 counties in Georgia; 16 counties in North Carolina; 21 counties in South Carolina. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Nov 30, 2010, 2:34 PM EST (19:34 UTC)
Expired: Nov 30, 2010, 10:00 PM EST
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1 in
Strongest gust expected: 60 kt

All 122 counties

Baldwin County, GA, Banks County, GA, Barrow County, GA, Bibb County, GA, Bleckley County, GA, Burke County, GA, Butts County, GA, Chattahoochee County, GA, Clarke County, GA, Clayton County, GA, Columbia County, GA, Crawford County, GA, Crisp County, GA, Dawson County, GA, DeKalb County, GA, Dodge County, GA, Dooly County, GA, Elbert County, GA, Emanuel County, GA, Fayette County, GA, Forsyth County, GA, Franklin County, GA, Fulton County, GA, Glascock County, GA, Greene County, GA, Gwinnett County, GA, Habersham County, GA, Hall County, GA, Hancock County, GA, Harris County, GA, Hart County, GA, Henry County, GA, Houston County, GA, Jackson County, GA, Jasper County, GA, Jefferson County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Laurens County, GA, Lincoln County, GA, Lumpkin County, GA, Macon County, GA, Madison County, GA, Marion County, GA, McDuffie County, GA, Meriwether County, GA, Monroe County, GA, Montgomery County, GA, Morgan County, GA, Muscogee County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Peach County, GA, Pike County, GA, Pulaski County, GA, Putnam County, GA, Rabun County, GA, Richmond County, GA, Rockdale County, GA, Schley County, GA, Spalding County, GA, Stephens County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taliaferro County, GA, Taylor County, GA, Telfair County, GA, Toombs County, GA, Towns County, GA, Treutlen County, GA, Twiggs County, GA, Union County, GA, Upson County, GA, Walton County, GA, Warren County, GA, Washington County, GA, Webster County, GA, Wheeler County, GA, White County, GA, Wilcox County, GA, Wilkes County, GA, Wilkinson County, GA, Alexander County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Davie County, NC, Gaston County, NC, Iredell County, NC, Lincoln County, NC, McDowell County, NC, Mecklenburg County, NC, Polk County, NC, Rowan County, NC, Rutherford County, NC, Union County, NC, Abbeville County, SC, Aiken County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Edgefield County, SC, Fairfield County, SC, Greenville County, SC, Greenwood County, SC, Lancaster County, SC, Laurens County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Oconee County, SC, Pickens County, SC, Richland County, SC, Saluda County, SC, Spartanburg County, SC, Union County, SC, York County, SC

The radar

The Greer radar (KGSP), 111 km from the middle of the area, began a volume at 19:35 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 50%
One or more EF2 to EF5 tornadoes: 30%
Ten or more severe wind reports: 40%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 10%
One or more hailstones of 2 inches or more: 5%
Six or more combined severe hail and wind reports: 70%

Warnings issued inside it

33 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Nov 30, 4:03 PM EST	Severe Thunderstorm Warning	FFC	Butts, Henry, Lamar, Newton, Spalding	42 min
Nov 30, 4:12 PM EST	Tornado Warning	FFC	Butts, Henry, Newton	33 min
Nov 30, 4:22 PM EST	Severe Thunderstorm Warning	FFC	Gwinnett, Newton, Walton	23 min
Nov 30, 4:25 PM EST	Severe Thunderstorm Warning	GSP	Habersham, Rabun, Stephens	65 min
Nov 30, 4:37 PM EST	Severe Thunderstorm Warning	FFC	Morgan, Newton, Walton	38 min
Nov 30, 4:43 PM EST	Severe Thunderstorm Warning	FFC	Barrow, Jackson	47 min
Nov 30, 4:52 PM EST	Severe Thunderstorm Warning	FFC	Banks	23 min
Nov 30, 5:04 PM EST	Severe Thunderstorm Warning	GSP	Franklin, Stephens	41 min
Nov 30, 5:15 PM EST	Severe Thunderstorm Warning	FFC	Clarke, Morgan, Oconee, Walton	45 min
Nov 30, 5:33 PM EST	Tornado Warning	GSP	Stephens	27 min
Nov 30, 5:42 PM EST	Severe Thunderstorm Warning	FFC	Jasper, Morgan, Putnam	48 min
Nov 30, 6:07 PM EST	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Oconee, Pickens	53 min
Nov 30, 6:23 PM EST	Severe Thunderstorm Warning	FFC	Clarke, Greene, Oconee, Oglethorpe	37 min
Nov 30, 6:35 PM EST	Severe Thunderstorm Warning	GSP	Elbert, Franklin, Hart	40 min
Nov 30, 6:50 PM EST	Tornado Warning	GSP	Hart	25 min
Nov 30, 7:02 PM EST	Severe Thunderstorm Warning	FFC	Baldwin, Jones	28 min
Nov 30, 7:10 PM EST	Severe Thunderstorm Warning	FFC	Bibb, Houston, Twiggs, Wilkinson	50 min
Nov 30, 7:10 PM EST	Severe Thunderstorm Warning	GSP	Hart	50 min
Nov 30, 7:15 PM EST	Severe Thunderstorm Warning	GSP	Elbert	45 min
Nov 30, 7:15 PM EST	Flash Flood Warning	GSP	Henderson, Polk, Rutherford, Transylvania	6 hr
Nov 30, 7:43 PM EST	Tornado Warning	GSP	Greenville, Pickens	20 min
Nov 30, 7:47 PM EST	Tornado Warning	FFC	Hancock	28 min
Nov 30, 7:49 PM EST	Flash Flood Warning	GSP	Avery, Buncombe, Burke, McDowell, Mitchell, Yancey	6 hr
Nov 30, 7:57 PM EST	Severe Thunderstorm Warning	GSP	Polk	63 min
Nov 30, 7:59 PM EST	Tornado Warning	GSP	Elbert	31 min
Nov 30, 8:31 PM EST	Severe Thunderstorm Warning	GSP	Elbert	59 min
Nov 30, 8:39 PM EST	Severe Thunderstorm Warning	CAE	Lincoln	51 min
Nov 30, 8:53 PM EST	Severe Thunderstorm Warning	FFC	Glascock, Jefferson, Warren, Washington	37 min
Nov 30, 9:02 PM EST	Tornado Warning	GSP	Abbeville, Anderson, Greenville, Greenwood, Laurens	28 min
Nov 30, 9:15 PM EST	Severe Thunderstorm Warning	CAE	Columbia, Lincoln, McDuffie, Richmond	45 min
Nov 30, 9:21 PM EST	Severe Thunderstorm Warning	GSP	Abbeville, Greenville, Greenwood, Laurens, Spartanburg, Union	54 min
Nov 30, 9:37 PM EST	Tornado Warning	GSP	Laurens, Spartanburg	38 min
Nov 30, 9:58 PM EST	Severe Thunderstorm Warning	CAE	Burke, Richmond	47 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.6 hours before the alert went out and 175 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: 125 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 477 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 400 m²/s²
0-3 km storm-relative helicity: 407 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 30, 8:00 AM EST	Mesoscale Discussion	SPC	Calhoun, Chattahoochee, Clay, Early, Harris, Marion and 14 more	60 min
Nov 30, 8:43 AM EST	Tornado Watch	SPC	Baker, Bartow, Bibb, Butts, Calhoun, Carroll and 68 more	8 hr
Nov 30, 10:38 AM EST	Mesoscale Discussion	SPC	Barrow, Bartow, Butts, Carroll, Catoosa, Chattooga and 38 more	97 min
Nov 30, 1:17 PM EST	Mesoscale Discussion	SPC	Baldwin, Banks, Barrow, Bibb, Bleckley, Butts and 65 more	118 min
Nov 30, 2:15 PM EST	Mesoscale Discussion	SPC	Appling, Atkinson, Bacon, Brantley, Bryan, Bulloch and 27 more	2 hr
Nov 30, 4:24 PM EST	Mesoscale Discussion	SPC	Baldwin, Banks, Barrow, Bibb, Bleckley, Burke and 54 more	96 min

Nearby

Tornado Watches in Georgia, 2010 Tornado Watches in South Carolina, 2010 Tornado Watches in North Carolina, 2010 Every tornado watch in 2010

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.