Alert archive / Georgia / Tornado Watches in 2020
Tornado Watch 15
The Storm Prediction Center issued this tornado watch at Jan 11, 2020, 12:42 PM CST for 4 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 11, 2020, 12:42 PM CST (18:42 UTC)
- Expired
- Jan 11, 2020, 8:00 PM CST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 65 kt
All 114 counties
Barbour County, AL, Bullock County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, DeKalb County, AL, Elmore County, AL, Etowah County, AL, Jackson County, AL, Lee County, AL, Macon County, AL, Marshall County, AL, Montgomery County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Talladega County, AL, Tallapoosa County, AL, Banks County, GA, Barrow County, GA, Bartow County, GA, Bibb County, GA, Butts County, GA, Carroll County, GA, Catoosa County, GA, Chattahoochee County, GA, Chattooga County, GA, Cherokee County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Crawford County, GA, Crisp County, GA, Dade County, GA, Dawson County, GA, DeKalb County, GA, Dooly County, GA, Douglas County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Gwinnett County, GA, Hall County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Houston County, GA, Jackson County, GA, Jasper County, GA, Jones County, GA, Lamar County, GA, Lumpkin County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Monroe County, GA, Murray County, GA, Muscogee County, GA, Newton County, GA, Paulding County, GA, Peach County, GA, Pickens County, GA, Pike County, GA, Polk County, GA, Rockdale County, GA, Schley County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Towns County, GA, Troup County, GA, Union County, GA, Upson County, GA, Walker County, GA, Walton County, GA, Webster County, GA, White County, GA, Whitfield County, GA, Cherokee County, NC, Clay County, NC, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Coffee County, TN, Cumberland County, TN, Franklin County, TN, Grundy County, TN, Hamilton County, TN, Knox County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Polk County, TN, Rhea County, TN, Roane County, TN, Sequatchie County, TN, Sevier County, TN, Van Buren County, TN, Warren County, TN, White County, TN
The radar
The Atlanta radar (KFFC), 85 km from the middle of the area, began a volume at 18:43 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
- 70%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 90%
- 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
- 95%
Warnings issued inside it
60 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 1:01 PM CST | Severe Thunderstorm Warning | HUN | Cullman, Marshall, Morgan | 39 min |
| Jan 11, 1:07 PM CST | Tornado Warning | HUN | Cullman, Marshall, Morgan | 23 min |
| Jan 11, 1:09 PM CST | Severe Thunderstorm Warning | BMX | Etowah | 81 min |
| Jan 11, 1:24 PM CST | Tornado Warning | HUN | Jackson, Madison, Marshall | 36 min |
| Jan 11, 1:28 PM CST | Severe Thunderstorm Warning | HUN | DeKalb, Jackson, Marshall | 62 min |
| Jan 11, 1:40 PM CST | Severe Thunderstorm Warning | BMX | Calhoun, Coosa, Talladega | 80 min |
| Jan 11, 1:41 PM CST | Severe Thunderstorm Warning | BMX | Cherokee | 79 min |
| Jan 11, 1:47 PM CST | Tornado Warning | HUN | Jackson | 28 min |
| Jan 11, 1:54 PM CST | Severe Thunderstorm Warning | HUN | Franklin | 21 min |
| Jan 11, 1:56 PM CST | Severe Thunderstorm Warning | MRX | Hamilton, Marion, Sequatchie | 64 min |
| Jan 11, 2:00 PM CST | Severe Thunderstorm Warning | FFC | Catoosa, Chattooga, Dade, Floyd, Walker, Whitfield | 45 min |
| Jan 11, 2:02 PM CST | Severe Thunderstorm Warning | OHX | Grundy, Van Buren, Warren | 28 min |
| Jan 11, 2:09 PM CST | Severe Thunderstorm Warning | BMX | Elmore, Montgomery | 62 min |
| Jan 11, 2:10 PM CST | Tornado Warning | HUN | DeKalb | 20 min |
| Jan 11, 2:11 PM CST | Severe Thunderstorm Warning | BMX | Clay | 61 min |
| Jan 11, 2:13 PM CST | Tornado Warning | HUN | Jackson | 15 min |
| Jan 11, 2:23 PM CST | Severe Thunderstorm Warning | BMX | Cleburne | 63 min |
| Jan 11, 2:27 PM CST | Severe Thunderstorm Warning | BMX | Tallapoosa | 66 min |
| Jan 11, 2:39 PM CST | Tornado Warning | MRX | Bledsoe, Hamilton, Marion, Sequatchie | 20 min |
| Jan 11, 2:40 PM CST | Severe Thunderstorm Warning | BMX | Bullock, Macon, Pike | 80 min |
| Jan 11, 2:42 PM CST | Severe Thunderstorm Warning | FFC | Bartow, Catoosa, Chattooga, Floyd, Gordon, Murray and 2 more | 48 min |
| Jan 11, 2:48 PM CST | Severe Thunderstorm Warning | BMX | Randolph | 72 min |
| Jan 11, 2:49 PM CST | Severe Thunderstorm Warning | MRX | Bledsoe, Bradley, Hamilton, McMinn, Meigs, Polk and 2 more | 56 min |
| Jan 11, 2:53 PM CST | Severe Thunderstorm Warning | FFC | Carroll, Haralson, Polk | 52 min |
| Jan 11, 3:07 PM CST | Severe Thunderstorm Warning | BMX | Chambers, Lee, Russell | 73 min |
| Jan 11, 3:13 PM CST | Severe Thunderstorm Warning | MRX | Loudon, McMinn, Meigs, Monroe, Polk | 47 min |
| Jan 11, 3:16 PM CST | Severe Thunderstorm Warning | FFC | Carroll, Heard | 44 min |
| Jan 11, 3:16 PM CST | Severe Thunderstorm Warning | MRX | Anderson, Meigs, Morgan, Rhea, Roane | 44 min |
| Jan 11, 3:18 PM CST | Tornado Warning | MRX | McMinn, Meigs, Rhea, Roane | 27 min |
| Jan 11, 3:19 PM CST | Severe Thunderstorm Warning | FFC | Bartow, Cherokee, Fannin, Gilmer, Gordon, Murray and 3 more | 41 min |
| Jan 11, 3:27 PM CST | Tornado Warning | BMX | Chambers, Tallapoosa | 18 min |
| Jan 11, 3:31 PM CST | Tornado Warning | MRX | Polk | 29 min |
| Jan 11, 3:32 PM CST | Severe Thunderstorm Warning | OHX | Cumberland | 18 min |
| Jan 11, 3:38 PM CST | Severe Thunderstorm Warning | MRX | Cherokee | 52 min |
| Jan 11, 3:42 PM CST | Severe Thunderstorm Warning | BMX | Barbour, Russell | 78 min |
| Jan 11, 3:47 PM CST | Severe Thunderstorm Warning | FFC | Chattahoochee, Coweta, Harris, Heard, Meriwether, Muscogee and 2 more | 43 min |
| Jan 11, 3:50 PM CST | Severe Thunderstorm Warning | MRX | Blount, Jefferson, Knox, Loudon, Monroe, Sevier | 40 min |
| Jan 11, 3:51 PM CST | Severe Thunderstorm Warning | FFC | Bartow, Carroll, Cherokee, Clayton, Cobb, Douglas and 2 more | 39 min |
| Jan 11, 3:53 PM CST | Severe Thunderstorm Warning | FFC | Dawson, Fannin, Gilmer, Lumpkin, Pickens, Union | 52 min |
| Jan 11, 3:56 PM CST | Severe Thunderstorm Warning | MRX | Anderson, Campbell, Claiborne, Grainger, Hamblen, Jefferson and 3 more | 49 min |
| Jan 11, 4:02 PM CST | Tornado Warning | FFC | Harris, Muscogee | 28 min |
| Jan 11, 4:23 PM CST | Severe Thunderstorm Warning | MRX | Blount, Hamblen, Jefferson, Knox, Monroe, Sevier | 52 min |
| Jan 11, 4:24 PM CST | Severe Thunderstorm Warning | FFC | Clayton, DeKalb, Fayette, Forsyth, Fulton, Gwinnett and 1 more | 51 min |
| Jan 11, 4:27 PM CST | Severe Thunderstorm Warning | FFC | Dawson, Hall, Lumpkin, Towns, Union, White | 48 min |
| Jan 11, 4:29 PM CST | Severe Thunderstorm Warning | FFC | Clayton, Coweta, Fayette, Harris, Henry, Lamar and 5 more | 46 min |
| Jan 11, 4:34 PM CST | Severe Thunderstorm Warning | FFC | Chattahoochee, Marion, Stewart, Talbot | 41 min |
| Jan 11, 4:34 PM CST | Severe Thunderstorm Warning | MRX | Cherokee, Clay | 41 min |
| Jan 11, 4:37 PM CST | Tornado Warning | BMX | Barbour | 23 min |
| Jan 11, 4:37 PM CST | Severe Thunderstorm Warning | MRX | Claiborne, Grainger, Hancock, Hawkins, Knox, Union | 53 min |
| Jan 11, 4:57 PM CST | Severe Thunderstorm Warning | FFC | Chattahoochee, Marion, Stewart, Webster | 48 min |
| Jan 11, 5:08 PM CST | Severe Thunderstorm Warning | FFC | Crawford, Lamar, Monroe, Taylor, Upson | 52 min |
| Jan 11, 5:10 PM CST | Severe Thunderstorm Warning | FFC | Banks, Barrow, Gwinnett, Hall, Jackson, Walton | 50 min |
| Jan 11, 5:12 PM CST | Severe Thunderstorm Warning | FFC | Butts, DeKalb, Henry, Jasper, Newton, Rockdale and 2 more | 48 min |
| Jan 11, 5:17 PM CST | Severe Thunderstorm Warning | FFC | Chattahoochee, Marion, Taylor | 43 min |
| Jan 11, 5:41 PM CST | Severe Thunderstorm Warning | FFC | Macon, Marion, Schley, Sumter, Taylor, Webster | 34 min |
| Jan 11, 5:52 PM CST | Severe Thunderstorm Warning | FFC | Jasper, Morgan, Putnam | 38 min |
| Jan 11, 5:58 PM CST | Severe Thunderstorm Warning | FFC | Bibb, Crawford, Houston, Peach, Taylor, Twiggs | 47 min |
| Jan 11, 6:14 PM CST | Severe Thunderstorm Warning | FFC | Dooly, Houston, Macon, Peach, Sumter, Twiggs | 46 min |
| Jan 11, 6:43 PM CST | Severe Thunderstorm Warning | FFC | Baldwin, Bibb, Jones, Twiggs, Washington, Wilkinson | 47 min |
| Jan 11, 6:54 PM CST | Severe Thunderstorm Warning | FFC | Bleckley, Dodge, Houston, Laurens, Pulaski, Twiggs and 1 more | 51 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, 6.7 hours before the alert went out and 91 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
- 13 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 557 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 417 m²/s²
- 0-3 km storm-relative helicity
- 450 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 6:12 AM CST | Mesoscale Discussion | SPC | Colbert, Lauderdale, Limestone, Madison | 93 min |
| Jan 11, 6:57 AM CST | Tornado Watch | SPC | Colbert, Cullman, Fayette, Franklin, Lamar, Lauderdale and 7 more | 7 hr |
| Jan 11, 7:39 AM CST | Mesoscale Discussion | SPC | Choctaw, Clarke, Greene, Hale, Marengo, Mobile and 3 more | 96 min |
| Jan 11, 7:57 AM CST | Tornado Watch | SPC | Autauga, Baldwin, Bibb, Blount, Butler, Chilton and 22 more | 9 hr |
| Jan 11, 9:28 AM CST | Mesoscale Discussion | SPC | Blount, Cullman, DeKalb, Fayette, Jackson, Lawrence and 7 more | 92 min |
| Jan 11, 9:54 AM CST | Mesoscale Discussion | SPC | Choctaw, Greene, Marengo, Pickens, Sumter, Washington | 96 min |
| Jan 11, 11:50 AM CST | Mesoscale Discussion | SPC | Bibb, Blount, Chilton, Choctaw, Clarke, Cullman and 15 more | 85 min |
| Jan 11, 12:20 PM CST | Mesoscale Discussion | SPC | Blount, Calhoun, Chambers, Cherokee, Clay, Cleburne and 9 more | 85 min |
| Jan 11, 1:15 PM CST | Mesoscale Discussion | SPC | Blount, Calhoun, Cherokee, Chilton, DeKalb, Etowah and 6 more | 90 min |
| Jan 11, 2:26 PM CST | Mesoscale Discussion | SPC | Barbour, Bullock, Butler, Coffee, Covington, Crenshaw and 10 more | 94 min |
| Jan 11, 2:44 PM CST | Tornado Watch | SPC | Coffee, Dale, Geneva, Henry, Houston | 5 hr |
| Jan 11, 3:16 PM CST | Mesoscale Discussion | SPC | Bullock, Chambers, Clay, Cleburne, Lee, Macon and 3 more | 89 min |
| Jan 11, 5:21 PM CST | Mesoscale Discussion | SPC | Houston | 114 min |
| Jan 11, 3:48 PM CST | Mesoscale Discussion | SPC | Banks, Elbert, Franklin, Habersham, Hart, Madison and 2 more | 117 min |
| Jan 11, 4:38 PM CST | Tornado Watch | SPC | Baldwin, Bleckley, Burke, Clarke, Columbia, Dodge and 34 more | 6 hr |
| Jan 11, 5:36 PM CST | Mesoscale Discussion | SPC | Baldwin, Banks, Barrow, Bibb, Bleckley, Butts and 63 more | 84 min |
| Jan 10, 11:58 PM CST | Tornado Watch | SPC | Crockett, Dyer, Fayette, Gibson, Haywood, Lake and 4 more | 7 hr |
| Jan 11, 3:52 AM CST | Mesoscale Discussion | SPC | Crockett, Dyer, Fayette, Hardeman, Haywood, Lauderdale and 3 more | 83 min |
| Jan 11, 4:17 AM CST | Tornado Watch | SPC | Benton, Carroll, Chester, Decatur, Hardeman, Hardin and 5 more | 6 hr |
| Jan 11, 5:06 AM CST | Mesoscale Discussion | SPC | Fayette, Hardeman, McNairy | 54 min |
| Jan 11, 8:20 AM CST | Mesoscale Discussion | SPC | Bledsoe, Cannon, Clay, Cumberland, DeKalb, Fentress and 11 more | 55 min |
Nearby
Tornado Watches in Georgia, 2020Tornado Watches in Tennessee, 2020Tornado Watches in Alabama, 2020Every tornado watch in 2020
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.