Alert archive / Georgia / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 63
The Storm Prediction Center issued this severe thunderstorm watch at Mar 20, 2003, 12:20 AM EST for 44 counties in Georgia; 25 counties in South Carolina. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 20, 2003, 12:20 AM EST (05:20 UTC)
- Expired
- Mar 20, 2003, 4:00 AM EST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 69 counties
Banks County, GA, Barrow County, GA, Butts County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Columbia County, GA, Coweta County, GA, DeKalb County, GA, Douglas County, GA, Elbert 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, Hart County, GA, Heard County, GA, Henry County, GA, Jackson County, GA, Jasper County, GA, Lincoln County, GA, Lumpkin County, GA, Madison County, GA, McDuffie County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Putnam County, GA, Richmond County, GA, Rockdale County, GA, Spalding County, GA, Stephens County, GA, Taliaferro County, GA, Walton County, GA, Warren County, GA, White County, GA, Wilkes County, GA, Abbeville County, SC, Aiken County, SC, Anderson County, SC, Barnwell County, SC, Calhoun County, SC, Chester County, SC, Chesterfield County, SC, Darlington County, SC, Edgefield County, SC, Fairfield County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, Marlboro County, SC, McCormick County, SC, Newberry County, SC, Oconee County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC, Union County, SC
The radar
The Greer radar (KGSP), 129 km from the middle of the area, began a volume at 05:22 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.
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 12:20 AM EST | Tornado Warning | FFC | Walton | 25 min |
| Mar 20, 12:27 AM EST | Severe Thunderstorm Warning | CAE | Aiken, Barnwell | 33 min |
| Mar 20, 12:39 AM EST | Severe Thunderstorm Warning | CAE | Orangeburg | 66 min |
| Mar 20, 1:10 AM EST | Flash Flood Warning | FFC | Clayton, Coweta, Fayette, Henry, Spalding | 3 hr |
| Mar 20, 1:55 AM EST | Flash Flood Warning | GSP | Franklin, Stephens | 3 hr |
| Mar 20, 1:59 AM EST | Severe Thunderstorm Warning | GSP | Oconee, Pickens | 46 min |
| Mar 20, 3:19 AM EST | Flash Flood Warning | FFC | Banks, Barrow, Jackson, Walton | 116 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 00:00Z, 5.3 hours before the alert went out and 162 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.
- Mixed-layer CAPE
- 753 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 467 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 168 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 2.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 19, 7:04 PM EST | Mesoscale Discussion | SPC | Appling, Bacon, Brantley, Bryan, Bulloch, Camden and 15 more | 116 min |
| Mar 19, 7:15 PM EST | Tornado Watch | SPC | Appling, Bacon, Bryan, Bulloch, Candler, Chatham and 11 more | 4 hr |
| Mar 19, 8:58 PM EST | Mesoscale Discussion | SPC | Burke, Columbia, Glascock, Jefferson, Jenkins, Lincoln and 6 more | 3 hr |
| Mar 19, 9:41 PM EST | Mesoscale Discussion | SPC | Clay, Early | 3 hr |
| Mar 19, 10:25 PM EST | Tornado Watch | SPC | Baker, Baldwin, Bibb, Calhoun, Chattahoochee, Clay and 30 more | 6 hr |
| Mar 19, 11:16 PM EST | Mesoscale Discussion | SPC | Baldwin, Banks, Barrow, Bartow, Butts, Carroll and 50 more | 2 hr |
| Mar 20, 12:52 AM EST | Mesoscale Discussion | SPC | Atkinson, Bacon, Baker, Ben Hill, Berrien, Bibb and 52 more | 2 hr |
| Mar 20, 3:06 AM EST | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 46 more | 54 min |
| Mar 20, 3:40 AM EST | Tornado Watch | SPC | Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 50 more | 5 hr |
| Mar 20, 6:12 AM EST | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Brooks and 40 more | 2 hr |
| Mar 20, 8:40 AM EST | Tornado Watch | SPC | Appling, Atkinson, Bacon, Berrien, Brantley, Brooks and 20 more | 6 hr |
| Mar 20, 11:09 AM EST | Mesoscale Discussion | SPC | Atkinson, Berrien, Brantley, Brooks, Clinch, Colquitt and 6 more | 2 hr |
| Mar 20, 1:33 PM EST | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Berrien, Brantley, Brooks and 10 more | 117 min |
| Mar 20, 2:35 PM EST | Tornado Watch | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 34 more | 6 hr |
| Mar 20, 4:21 PM EST | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 36 more | 114 min |
| Mar 20, 6:57 PM EST | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 37 more | 2 hr |
| Mar 20, 2:16 AM EST | Mesoscale Discussion | SPC | Georgetown, Horry, Marion, Williamsburg | 119 min |
| Mar 20, 5:48 AM EST | Mesoscale Discussion | SPC | Calhoun, Clarendon, Darlington, Dillon, Florence, Horry and 5 more | 117 min |
| Mar 20, 10:10 AM EST | Tornado Watch | SPC | Georgetown, Horry | 5 hr |
| Mar 20, 10:40 AM EST | Mesoscale Discussion | SPC | Horry | 2 hr |
Nearby
Severe Thunderstorm Watches in Georgia, 2003Severe Thunderstorm Watches in South Carolina, 2003Every severe thunderstorm watch in 2003
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.