Alert archive / Georgia / Tornado Watches in 2010

Tornado Watch 37

March 28, 201040 counties in Georgia; 12 counties in North Carolina; 23 counties in South Carolina

The Storm Prediction Center issued this tornado watch at Mar 28, 2010, 3:47 PM EDT for 40 counties in Georgia; 12 counties in North Carolina; 23 counties in South Carolina. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Mar 28, 2010, 3:47 PM EDT (19:47 UTC)
Expired: Mar 28, 2010, 11:00 PM EDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 60 kt

All 75 counties

Banks County, GA, Barrow County, GA, Burke County, GA, Clarke County, GA, Columbia County, GA, Dawson County, GA, Elbert County, GA, Fannin County, GA, Forsyth County, GA, Franklin County, GA, Gilmer County, GA, Glascock County, GA, Greene County, GA, Gwinnett County, GA, Habersham County, GA, Hall County, GA, Hancock County, GA, Hart County, GA, Jackson County, GA, Jefferson County, GA, Lincoln County, GA, Lumpkin County, GA, Madison County, GA, McDuffie County, GA, Morgan County, GA, Oconee County, GA, Oglethorpe County, GA, Pickens County, GA, Putnam County, GA, Rabun County, GA, Richmond County, GA, Stephens County, GA, Taliaferro County, GA, Towns County, GA, Union County, GA, Walton County, GA, Warren County, GA, Washington County, GA, White County, GA, Wilkes County, GA, Cabarrus County, NC, Catawba County, NC, Cleveland County, NC, Davie County, NC, Gaston County, NC, Iredell County, NC, Lincoln 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, Chesterfield County, SC, Edgefield County, SC, Fairfield County, SC, Greenville County, SC, Greenwood County, SC, Kershaw 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), 46 km from the middle of the area, began a volume at 19:48 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: 40%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 30%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 70%
One or more hailstones of 2 inches or more: 50%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Mar 28, 4:17 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Davie, Iredell, Mecklenburg, Rowan	48 min
Mar 28, 4:50 PM EDT	Severe Thunderstorm Warning	CAE	Columbia	40 min
Mar 28, 4:59 PM EDT	Tornado Warning	CAE	Columbia	46 min
Mar 28, 5:29 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Davie, Rowan	61 min
Mar 28, 5:42 PM EDT	Tornado Warning	GSP	Cabarrus, Gaston, Iredell, Mecklenburg, Rowan	48 min
Mar 28, 5:48 PM EDT	Tornado Warning	GSP	Rowan	27 min
Mar 28, 6:07 PM EDT	Severe Thunderstorm Warning	GSP	Polk, Rutherford	53 min
Mar 28, 6:16 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Pickens	59 min
Mar 28, 6:30 PM EDT	Tornado Warning	GSP	Rowan	30 min
Mar 28, 6:41 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Spartanburg	64 min
Mar 28, 6:47 PM EDT	Severe Thunderstorm Warning	GSP	Catawba, Cleveland, Gaston, Iredell, Lincoln, Mecklenburg	58 min
Mar 28, 6:59 PM EDT	Severe Thunderstorm Warning	FFC	Putnam	31 min
Mar 28, 7:05 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Jones, Putnam	25 min
Mar 28, 7:06 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Rutherford	54 min
Mar 28, 7:10 PM EDT	Severe Thunderstorm Warning	FFC	Greene, Hancock, Taliaferro, Wilkes	50 min
Mar 28, 7:15 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, Spartanburg, York	60 min
Mar 28, 7:19 PM EDT	Tornado Warning	GSP	Cherokee, Spartanburg, York	41 min
Mar 28, 7:25 PM EDT	Tornado Warning	GSP	Cleveland, Rutherford	35 min
Mar 28, 7:25 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Laurens, Spartanburg	65 min
Mar 28, 7:37 PM EDT	Severe Thunderstorm Warning	FFC	Oglethorpe, Wilkes	38 min
Mar 28, 7:47 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Hancock, Putnam	58 min
Mar 28, 7:52 PM EDT	Tornado Warning	GSP	Catawba, Gaston, Lincoln, Mecklenburg	38 min
Mar 28, 7:55 PM EDT	Severe Thunderstorm Warning	GSP	Elbert	53 min
Mar 28, 7:56 PM EDT	Severe Thunderstorm Warning	GSP	Davie, Iredell, Rowan	49 min
Mar 28, 8:08 PM EDT	Tornado Warning	GSP	Gaston, Mecklenburg	52 min
Mar 28, 8:09 PM EDT	Severe Thunderstorm Warning	FFC	Glascock, Hancock, Warren	66 min
Mar 28, 8:12 PM EDT	Tornado Warning	FFC	Glascock, Hancock, Warren, Washington	48 min
Mar 28, 8:14 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, Chester, Spartanburg, Union, York	61 min
Mar 28, 8:31 PM EDT	Severe Thunderstorm Warning	GSP	Laurens, Spartanburg	59 min
Mar 28, 8:38 PM EDT	Tornado Warning	GSP	Cabarrus, Gaston, Mecklenburg, Rowan	52 min
Mar 28, 8:40 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Greenville, Greenwood, Laurens	65 min
Mar 28, 8:42 PM EDT	Tornado Warning	FFC	Glascock, Warren	48 min
Mar 28, 8:47 PM EDT	Severe Thunderstorm Warning	FFC	Hancock, Warren	28 min
Mar 28, 8:54 PM EDT	Severe Thunderstorm Warning	FFC	Greene, Putnam	51 min
Mar 28, 8:56 PM EDT	Tornado Warning	CAE	Columbia, McDuffie, Richmond	49 min
Mar 28, 8:56 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, York	64 min
Mar 28, 9:06 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Jones, Putnam	41 min
Mar 28, 9:16 PM EDT	Severe Thunderstorm Warning	FFC	Glascock, Warren	29 min
Mar 28, 9:19 PM EDT	Severe Thunderstorm Warning	GSP	Elbert	70 min
Mar 28, 9:25 PM EDT	Severe Thunderstorm Warning	GSP	Mecklenburg, Union	65 min
Mar 28, 9:32 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Hancock, Putnam	58 min
Mar 28, 9:32 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, Greenville, Laurens, Spartanburg, Union, York	73 min
Mar 28, 9:41 PM EDT	Tornado Warning	FFC	Hancock	49 min
Mar 28, 9:45 PM EDT	Severe Thunderstorm Warning	CAE	Columbia	45 min
Mar 28, 10:06 PM EDT	Tornado Warning	FFC	Hancock, Warren	39 min
Mar 28, 10:08 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Rowan	39 min
Mar 28, 10:20 PM EDT	Tornado Warning	CAE	Aiken, Edgefield	40 min
Mar 28, 10:31 PM EDT	Severe Thunderstorm Warning	FFC	Greene, Hancock, Taliaferro, Warren, Wilkes	59 min
Mar 28, 10:40 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Greene, Hancock, Putnam	50 min
Mar 28, 10:43 PM EDT	Severe Thunderstorm Warning	GSP	Laurens, Union	24 min
Mar 28, 10:48 PM EDT	Severe Thunderstorm Warning	CAE	Columbia, Lincoln, McDuffie	42 min
Mar 28, 10:53 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield, Saluda	37 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, 7.8 hours before the alert went out and 223 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: 30 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 478 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 535 m²/s²
0-3 km storm-relative helicity: 588 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 28, 3:21 PM EDT	Mesoscale Discussion	SPC	Banks, Clarke, Elbert, Franklin, Habersham, Hall and 8 more	114 min
Mar 28, 7:19 PM EDT	Mesoscale Discussion	SPC	Baldwin, Banks, Barrow, Bibb, Burke, Butts and 60 more	86 min
Mar 28, 7:37 PM EDT	Tornado Watch	SPC	Alamance, Anson, Caswell, Chatham, Davidson, Durham and 13 more	4 hr

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.