Alert archive / Georgia / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 129
The Storm Prediction Center issued this severe thunderstorm watch at Apr 19, 2013, 11:37 AM CDT for 12 counties in Florida; 79 counties in Georgia; 12 counties in South Carolina. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 19, 2013, 11:37 AM CDT (16:37 UTC)
- Expired
- Apr 19, 2013, 6:04 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 65 kt
All 103 counties
Bay County, FL, Calhoun County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Taylor County, FL, Wakulla County, FL, Baker County, GA, Baldwin County, GA, Ben Hill County, GA, Berrien County, GA, Bibb County, GA, Bleckley County, GA, Brooks County, GA, Burke County, GA, Butts County, GA, Calhoun County, GA, Clarke County, GA, Colquitt County, GA, Columbia County, GA, Cook County, GA, Crawford County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Emanuel County, GA, Glascock County, GA, Grady County, GA, Greene County, GA, Hancock County, GA, Henry County, GA, Houston County, GA, Irwin County, GA, Jasper County, GA, Jefferson County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Lanier County, GA, Laurens County, GA, Lee County, GA, Lincoln County, GA, Lowndes County, GA, Macon County, GA, Marion County, GA, McDuffie County, GA, Miller County, GA, Mitchell County, GA, Monroe County, GA, Montgomery County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Peach County, GA, Pulaski County, GA, Putnam County, GA, Randolph County, GA, Richmond County, GA, Schley County, GA, Seminole County, GA, Spalding County, GA, Sumter County, GA, Taliaferro County, GA, Taylor County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Turner County, GA, Twiggs County, GA, Upson County, GA, Walton County, GA, Warren County, GA, Washington County, GA, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Wilkes County, GA, Wilkinson County, GA, Worth County, GA, Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Clarendon County, SC, Edgefield County, SC, Lexington County, SC, McCormick County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC
The radar
The Robins AFB radar (KJGX), 48 km from the middle of the area, began a volume at 16:38 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
- 20%
- One or more EF2 to EF5 tornadoes
- 10%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 12:10 PM CDT | Severe Thunderstorm Warning | FFC | Jasper, Morgan, Newton, Walton | 35 min |
| Apr 19, 12:21 PM CDT | Tornado Warning | FFC | Morgan, Walton | 24 min |
| Apr 19, 12:33 PM CDT | Severe Thunderstorm Warning | FFC | Clarke, Greene, Madison, Oconee, Oglethorpe, Wilkes | 42 min |
| Apr 19, 12:36 PM CDT | Severe Thunderstorm Warning | FFC | Houston, Peach, Twiggs | 39 min |
| Apr 19, 1:47 PM CDT | Severe Thunderstorm Warning | CAE | Columbia, Richmond | 43 min |
| Apr 19, 1:51 PM CDT | Severe Thunderstorm Warning | CAE | Columbia, Lincoln, McDuffie | 24 min |
| Apr 19, 2:18 PM CDT | Severe Thunderstorm Warning | TAE | Berrien, Brooks, Cook, Lanier, Lowndes | 42 min |
| Apr 19, 2:22 PM CDT | Severe Thunderstorm Warning | CAE | Burke, Columbia, Lincoln, McDuffie, Richmond | 38 min |
| Apr 19, 2:55 PM CDT | Severe Thunderstorm Warning | CAE | Chesterfield, Fairfield, Kershaw, Lancaster, Richland | 35 min |
| Apr 19, 3:05 PM CDT | Severe Thunderstorm Warning | CAE | Burke, Columbia, Richmond | 40 min |
| Apr 19, 3:46 PM CDT | Severe Thunderstorm Warning | CAE | Chesterfield, Kershaw, Lancaster, Lee, Richland, Sumter | 44 min |
| Apr 19, 3:57 PM CDT | Severe Thunderstorm Warning | CAE | Bamberg, Calhoun, Lexington, Orangeburg, Richland | 48 min |
| Apr 19, 4:36 PM CDT | Severe Thunderstorm Warning | CAE | Calhoun, Chesterfield, Clarendon, Kershaw, Lee, Orangeburg and 2 more | 39 min |
| Apr 19, 5:15 PM CDT | Severe Thunderstorm Warning | CAE | Clarendon, Orangeburg, Sumter | 45 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, 4.6 hours before the alert went out and 136 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
- 292 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 572 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 252 m²/s²
- 0-3 km storm-relative helicity
- 286 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 10:42 AM CDT | Mesoscale Discussion | SPC | Bay, Calhoun, Franklin, Gadsden, Gulf, Hamilton and 9 more | 3 hr |
| Apr 19, 12:57 PM CDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Calhoun, Clay, Columbia and 17 more | 2 hr |
| Apr 19, 3:29 PM CDT | Mesoscale Discussion | SPC | Hamilton, Jefferson, Lafayette, Madison, Taylor, Wakulla | 2 hr |
| Apr 19, 5:37 PM CDT | Mesoscale Discussion | SPC | Hamilton, Madison, Taylor | 113 min |
| Apr 19, 1:52 AM CDT | Mesoscale Discussion | SPC | Bartow, Carroll, Catoosa, Chattooga, Dade, Fannin and 10 more | 83 min |
| Apr 19, 1:00 PM CDT | Tornado Watch | SPC | Elbert, Hart | 7 hr |
| Apr 19, 1:36 PM CDT | Severe Thunderstorm Watch | SPC | Appling, Atkinson, Bacon, Brantley, Bryan, Bulloch and 20 more | 7 hr |
| Apr 19, 11:35 AM CDT | Mesoscale Discussion | SPC | Abbeville, Anderson, Cherokee, Chester, Chesterfield, Darlington and 16 more | 115 min |
| Apr 19, 3:48 PM CDT | Mesoscale Discussion | SPC | Chester, Chesterfield, Darlington, Dillon, Fairfield, Florence and 9 more | 57 min |
| Apr 19, 5:27 PM CDT | Severe Thunderstorm Watch | SPC | Georgetown, Horry | 4 hr |
| Apr 19, 5:54 PM CDT | Mesoscale Discussion | SPC | Dillon | 66 min |
Nearby
Severe Thunderstorm Watches in Georgia, 2013Severe Thunderstorm Watches in Florida, 2013Severe Thunderstorm Watches in South Carolina, 2013Every severe thunderstorm 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.