Alert archive / Georgia / Severe Thunderstorm Watches in 2012
Severe Thunderstorm Watch 148
The Storm Prediction Center issued this severe thunderstorm watch at Apr 5, 2012, 1:58 PM CDT for 5 counties in Alabama; 12 counties in Florida; 42 counties in Georgia. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 5, 2012, 1:58 PM CDT (18:58 UTC)
- Expired
- Apr 5, 2012, 7:40 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 59 counties
Coffee County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Leon County, FL, Liberty County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Ben Hill County, GA, Calhoun County, GA, Chattahoochee County, GA, Clay County, GA, Colquitt County, GA, Crawford County, GA, Crisp County, GA, Decatur County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Grady County, GA, Harris County, GA, Houston County, GA, Irwin County, GA, Lee County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Muscogee County, GA, Peach County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Seminole County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Troup County, GA, Turner County, GA, Upson County, GA, Webster County, GA, Wilcox County, GA, Worth County, GA
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
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 2:26 PM CDT | Severe Thunderstorm Warning | TAE | Coffee | 34 min |
| Apr 5, 2:41 PM CDT | Severe Thunderstorm Warning | TAE | Dale | 49 min |
| Apr 5, 3:27 PM CDT | Severe Thunderstorm Warning | TAE | Dale, Henry, Houston | 48 min |
| Apr 5, 4:06 PM CDT | Severe Thunderstorm Warning | TAE | Calhoun, Clay, Early, Miller | 54 min |
| Apr 5, 5:02 PM CDT | Severe Thunderstorm Warning | TAE | Baker, Mitchell | 28 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, 7.0 hours before the alert went out and 169 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
- 145 J/kg
- Mixed-layer CIN
- -139 J/kg
- Mixed-layer LCL
- 871 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- -41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 7:36 AM CDT | Mesoscale Discussion | SPC | Choctaw, Greene, Hale, Marengo, Perry, Pickens and 2 more | 54 min |
| Apr 5, 9:14 AM CDT | Severe Thunderstorm Watch | SPC | Autauga, Barbour, Bibb, Bullock, Butler, Chambers and 34 more | 8 hr |
| Apr 5, 10:41 AM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Butler, Chilton, Choctaw, Clarke and 15 more | 94 min |
| Apr 5, 12:09 PM CDT | Mesoscale Discussion | SPC | Colbert, Cullman, Franklin, Lauderdale, Lawrence, Limestone and 4 more | 96 min |
| Apr 5, 1:12 PM CDT | Mesoscale Discussion | SPC | Barbour, Bullock, Chambers, Clay, Coffee, Covington and 11 more | 93 min |
| Apr 5, 1:21 PM CDT | Severe Thunderstorm Watch | SPC | Colbert, DeKalb, Franklin, Jackson, Lauderdale, Lawrence and 4 more | 8 hr |
| Apr 5, 3:06 PM CDT | Mesoscale Discussion | SPC | Colbert, DeKalb, Franklin, Jackson, Lauderdale, Lawrence and 4 more | 54 min |
| Apr 5, 3:46 PM CDT | Mesoscale Discussion | SPC | Blount, Calhoun, Cullman, Etowah, Fayette, Jefferson and 7 more | 59 min |
| Apr 5, 3:49 PM CDT | Mesoscale Discussion | SPC | Geneva, Henry, Houston | 86 min |
| Apr 5, 6:14 PM CDT | Severe Thunderstorm Watch | SPC | Autauga, Bibb, Blount, Bullock, Calhoun, Chambers and 21 more | 3 hr |
| Apr 5, 6:15 PM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Blount, Bullock, Calhoun, Chambers and 23 more | 45 min |
| Apr 4, 9:03 PM CDT | Mesoscale Discussion | SPC | Charlotte, Collier, DeSoto, Hillsborough, Lee, Manatee and 2 more | 57 min |
| Apr 5, 1:10 AM CDT | Mesoscale Discussion | SPC | Miami-Dade, Monroe | 3 hr |
| Apr 5, 12:03 PM CDT | Mesoscale Discussion | SPC | Banks, Burke, Clarke, Columbia, Effingham, Elbert and 24 more | 87 min |
| Apr 5, 12:47 PM CDT | Severe Thunderstorm Watch | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 17 more | 7 hr |
| Apr 5, 12:54 PM CDT | Mesoscale Discussion | SPC | Bartow, Catoosa, Chattooga, Cherokee, Dade, Dawson and 11 more | 96 min |
| Apr 5, 2:37 PM CDT | Mesoscale Discussion | SPC | Burke, Chatham, Columbia, Effingham, Elbert, Franklin and 11 more | 53 min |
| Apr 5, 5:35 PM CDT | Mesoscale Discussion | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 12 more | 85 min |
Nearby
Severe Thunderstorm Watches in Georgia, 2012Severe Thunderstorm Watches in Florida, 2012Severe Thunderstorm Watches in Alabama, 2012Every severe thunderstorm watch in 2012
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.