Alert archive / Georgia / Severe Thunderstorm Watches in 2011
Severe Thunderstorm Watch 68
The Storm Prediction Center issued this severe thunderstorm watch at Mar 27, 2011, 8:55 AM CDT for 23 counties in Alabama; 93 counties in Georgia; 8 counties in South Carolina. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 27, 2011, 8:55 AM CDT (13:55 UTC)
- Expired
- Mar 27, 2011, 4:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
All 124 counties
Autauga County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Chambers County, AL, Chilton County, AL, Coffee County, AL, Coosa County, AL, Crenshaw County, AL, Dale County, AL, Dallas County, AL, Elmore County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Montgomery County, AL, Perry County, AL, Pike County, AL, Russell County, AL, Tallapoosa County, AL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Baldwin County, GA, Ben Hill County, GA, Berrien County, GA, Bibb County, GA, Bleckley County, GA, Brantley County, GA, Brooks County, GA, Bryan County, GA, Bulloch County, GA, Calhoun County, GA, Camden County, GA, Candler County, GA, Charlton County, GA, Chatham County, GA, Chattahoochee County, GA, Clay County, GA, Clinch County, GA, Coffee County, GA, Colquitt 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, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glynn County, GA, Grady County, GA, Harris County, GA, Houston County, GA, Irwin County, GA, Jeff Davis County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Lanier County, GA, Laurens County, GA, Lee County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, Macon County, GA, Marion County, GA, McIntosh County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Monroe County, GA, Montgomery County, GA, Muscogee County, GA, Peach County, GA, Pierce County, GA, Pike County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Screven County, GA, Seminole County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Tattnall County, GA, Taylor County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Troup County, GA, Turner County, GA, Twiggs County, GA, Upson County, GA, Ware County, GA, Washington County, GA, Wayne County, GA, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Wilkinson County, GA, Worth County, GA, Allendale County, SC, Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC
The radar
The Robins AFB radar (KJGX), 97 km from the middle of the area, began a volume at 13:55 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
- 5%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
58 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 9:30 AM CDT | Severe Thunderstorm Warning | FFC | Meriwether, Talbot, Upson | 30 min |
| Mar 27, 9:33 AM CDT | Severe Thunderstorm Warning | FFC | Bibb, Crawford, Monroe | 42 min |
| Mar 27, 9:57 AM CDT | Severe Thunderstorm Warning | FFC | Bibb, Crawford, Monroe, Upson | 48 min |
| Mar 27, 10:02 AM CDT | Severe Thunderstorm Warning | BMX | Autauga, Chilton, Coosa, Elmore | 28 min |
| Mar 27, 11:48 AM CDT | Severe Thunderstorm Warning | FFC | Johnson, Laurens | 42 min |
| Mar 27, 11:57 AM CDT | Severe Thunderstorm Warning | CHS | Jasper | 45 min |
| Mar 27, 12:12 PM CDT | Severe Thunderstorm Warning | BMX | Russell | 48 min |
| Mar 27, 12:14 PM CDT | Severe Thunderstorm Warning | FFC | Emanuel, Treutlen | 46 min |
| Mar 27, 12:29 PM CDT | Severe Thunderstorm Warning | CHS | Beaufort, Colleton, Jasper | 45 min |
| Mar 27, 12:38 PM CDT | Severe Thunderstorm Warning | FFC | Chattahoochee, Stewart | 37 min |
| Mar 27, 12:40 PM CDT | Severe Thunderstorm Warning | TAE | Dale, Henry | 50 min |
| Mar 27, 12:41 PM CDT | Severe Thunderstorm Warning | CHS | Bulloch, Candler | 64 min |
| Mar 27, 12:45 PM CDT | Severe Thunderstorm Warning | TAE | Grady, Thomas | 45 min |
| Mar 27, 12:48 PM CDT | Severe Thunderstorm Warning | CHS | Effingham | 26 min |
| Mar 27, 12:51 PM CDT | Severe Thunderstorm Warning | MOB | Crenshaw | 24 min |
| Mar 27, 12:55 PM CDT | Severe Thunderstorm Warning | JAX | Bacon, Pierce, Ware | 20 min |
| Mar 27, 12:57 PM CDT | Severe Thunderstorm Warning | CHS | Beaufort | 63 min |
| Mar 27, 1:01 PM CDT | Severe Thunderstorm Warning | FFC | Emanuel, Laurens, Montgomery, Toombs, Treutlen, Wheeler | 44 min |
| Mar 27, 1:05 PM CDT | Tornado Warning | JAX | Pierce | 40 min |
| Mar 27, 1:13 PM CDT | Severe Thunderstorm Warning | CHS | Bulloch, Candler, Effingham, Screven | 62 min |
| Mar 27, 1:13 PM CDT | Severe Thunderstorm Warning | TAE | Berrien, Cook, Lanier | 47 min |
| Mar 27, 1:22 PM CDT | Severe Thunderstorm Warning | FFC | Marion, Schley, Sumter, Webster | 53 min |
| Mar 27, 1:29 PM CDT | Severe Thunderstorm Warning | BMX | Barbour | 31 min |
| Mar 27, 1:30 PM CDT | Severe Thunderstorm Warning | TAE | Clay, Quitman, Randolph | 45 min |
| Mar 27, 1:31 PM CDT | Severe Thunderstorm Warning | TAE | Henry | 44 min |
| Mar 27, 1:32 PM CDT | Severe Thunderstorm Warning | CHS | Bulloch, Candler, Evans, Tattnall | 58 min |
| Mar 27, 1:32 PM CDT | Severe Thunderstorm Warning | FFC | Dooly, Pulaski | 43 min |
| Mar 27, 1:33 PM CDT | Severe Thunderstorm Warning | TAE | Dale, Henry, Houston | 42 min |
| Mar 27, 1:38 PM CDT | Severe Thunderstorm Warning | JAX | Brantley, Wayne | 39 min |
| Mar 27, 1:41 PM CDT | Severe Thunderstorm Warning | CHS | Bulloch, Chatham, Effingham | 64 min |
| Mar 27, 1:52 PM CDT | Severe Thunderstorm Warning | FFC | Bleckley, Dodge | 53 min |
| Mar 27, 1:58 PM CDT | Severe Thunderstorm Warning | CHS | Chatham | 62 min |
| Mar 27, 2:01 PM CDT | Severe Thunderstorm Warning | FFC | Laurens, Montgomery, Treutlen, Wheeler | 59 min |
| Mar 27, 2:05 PM CDT | Severe Thunderstorm Warning | CHS | Bryan, Bulloch, Effingham, Evans | 55 min |
| Mar 27, 2:11 PM CDT | Severe Thunderstorm Warning | FFC | Crisp, Dooly | 49 min |
| Mar 27, 2:12 PM CDT | Severe Thunderstorm Warning | CHS | Bryan, Bulloch, Chatham, Effingham, Evans, Liberty | 63 min |
| Mar 27, 2:13 PM CDT | Severe Thunderstorm Warning | TAE | Henry, Houston | 47 min |
| Mar 27, 2:18 PM CDT | Severe Thunderstorm Warning | TAE | Brooks, Lanier, Lowndes | 42 min |
| Mar 27, 2:26 PM CDT | Severe Thunderstorm Warning | CHS | Beaufort | 33 min |
| Mar 27, 2:34 PM CDT | Severe Thunderstorm Warning | FFC | Dodge, Wilcox | 56 min |
| Mar 27, 2:38 PM CDT | Severe Thunderstorm Warning | TAE | Coffee | 22 min |
| Mar 27, 2:45 PM CDT | Severe Thunderstorm Warning | CHS | Bryan, Bulloch, Evans, Liberty, Long, Tattnall | 60 min |
| Mar 27, 2:51 PM CDT | Severe Thunderstorm Warning | FFC | Dodge, Montgomery, Telfair, Toombs, Wheeler | 54 min |
| Mar 27, 2:56 PM CDT | Severe Thunderstorm Warning | TAE | Baker, Early, Miller, Mitchell | 50 min |
| Mar 27, 2:58 PM CDT | Severe Thunderstorm Warning | TAE | Lanier, Lowndes | 32 min |
| Mar 27, 2:59 PM CDT | Severe Thunderstorm Warning | TAE | Coffee, Dale, Geneva, Houston | 46 min |
| Mar 27, 3:01 PM CDT | Severe Thunderstorm Warning | JAX | Clinch, Echols, Ware | 13 min |
| Mar 27, 3:02 PM CDT | Severe Thunderstorm Warning | CHS | Chatham | 58 min |
| Mar 27, 3:03 PM CDT | Tornado Warning | TAE | Baker, Miller, Mitchell | 27 min |
| Mar 27, 3:05 PM CDT | Severe Thunderstorm Warning | TAE | Berrien, Brooks, Cook, Lowndes | 40 min |
| Mar 27, 3:11 PM CDT | Severe Thunderstorm Warning | CHS | Bryan, Chatham, Effingham, Evans, Liberty | 64 min |
| Mar 27, 3:20 PM CDT | Severe Thunderstorm Warning | CHS | Bulloch, Candler, Evans, Tattnall | 34 min |
| Mar 27, 3:26 PM CDT | Severe Thunderstorm Warning | FFC | Dodge, Telfair, Wilcox | 25 min |
| Mar 27, 3:29 PM CDT | Severe Thunderstorm Warning | JAX | Appling, Jeff Davis | 33 min |
| Mar 27, 3:35 PM CDT | Severe Thunderstorm Warning | TAE | Dale, Geneva, Henry, Houston | 40 min |
| Mar 27, 3:36 PM CDT | Severe Thunderstorm Warning | TAE | Coffee, Dale, Geneva, Houston | 39 min |
| Mar 27, 3:37 PM CDT | Severe Thunderstorm Warning | CHS | Bryan, Bulloch, Evans, Liberty, Long, Tattnall | 53 min |
| Mar 27, 3:53 PM CDT | Severe Thunderstorm Warning | CHS | Chatham | 48 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
Jacksonville, FL (KJAX), launched 12:00Z, 1.9 hours before the alert went out and 220 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
- 199 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 999 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 231 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.7
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 26, 7:47 PM CDT | Tornado Watch | SPC | Bibb, Blount, Calhoun, Chambers, Cherokee, Chilton and 17 more | 7 hr |
| Mar 26, 11:21 PM CDT | Mesoscale Discussion | SPC | Bibb, Blount, Calhoun, Chambers, Cherokee, Chilton and 17 more | 54 min |
| Mar 27, 7:33 AM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Chambers, Chilton, Clay, Coosa and 16 more | 117 min |
| Mar 27, 10:51 AM CDT | Mesoscale Discussion | SPC | Barbour, Coffee, Covington, Crenshaw, Dale, Geneva and 3 more | 84 min |
| Mar 27, 2:49 PM CDT | Mesoscale Discussion | SPC | Baldwin, Coffee, Covington, Dale, Geneva, Henry and 1 more | 56 min |
| Mar 27, 3:27 PM CDT | Severe Thunderstorm Watch | SPC | Coffee, Covington, Dale, Escambia, Geneva, Henry and 1 more | 5 hr |
| Mar 27, 6:24 PM CDT | Mesoscale Discussion | SPC | Baldwin, Coffee, Conecuh, Covington, Dale, Escambia and 4 more | 2 hr |
| Mar 26, 7:55 PM CDT | Mesoscale Discussion | SPC | Banks, Barrow, Bartow, Catoosa, Chattooga, Cherokee and 36 more | 95 min |
| Mar 26, 8:19 PM CDT | Severe Thunderstorm Watch | SPC | Banks, Barrow, Bartow, Burke, Catoosa, Chattooga and 39 more | 8 hr |
| Mar 26, 10:10 PM CDT | Mesoscale Discussion | SPC | Bryan, Bulloch, Candler, Chatham, Effingham, Evans and 3 more | 65 min |
| Mar 26, 11:43 PM CDT | Mesoscale Discussion | SPC | Banks, Barrow, Bartow, Burke, Catoosa, Chattooga and 38 more | 62 min |
| Mar 27, 2:03 AM CDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Ben Hill, Bibb, Bleckley and 40 more | 57 min |
| Mar 27, 2:25 AM CDT | Tornado Watch | SPC | Appling, Baldwin, Bibb, Bleckley, Bryan, Bulloch and 46 more | 3 hr |
Nearby
Severe Thunderstorm Watches in Georgia, 2011Severe Thunderstorm Watches in Alabama, 2011Severe Thunderstorm Watches in South Carolina, 2011Every severe thunderstorm watch in 2011
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.