Alert archive / Georgia / Tornado Watches in 2020
Tornado Watch 17
The Storm Prediction Center issued this tornado watch at Jan 11, 2020, 5:38 PM EST for 40 counties in Georgia; 28 counties in North Carolina; 16 counties in South Carolina. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 11, 2020, 5:38 PM EST (22:38 UTC)
- Expired
- Jan 12, 2020, 12:00 AM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 60 kt
All 84 counties
Baldwin County, GA, Bleckley County, GA, Burke County, GA, Clarke County, GA, Columbia County, GA, Dodge County, GA, Elbert County, GA, Emanuel County, GA, Franklin County, GA, Glascock County, GA, Greene County, GA, Habersham County, GA, Hancock County, GA, Hart County, GA, Jefferson County, GA, Johnson County, GA, Laurens County, GA, Lincoln County, GA, Madison County, GA, McDuffie County, GA, Montgomery County, GA, Morgan County, GA, Oconee County, GA, Oglethorpe County, GA, Pulaski County, GA, Putnam County, GA, Rabun County, GA, Richmond County, GA, Stephens County, GA, Taliaferro County, GA, Telfair County, GA, Toombs County, GA, Treutlen County, GA, Twiggs County, GA, Warren County, GA, Washington County, GA, Wheeler County, GA, Wilcox County, GA, Wilkes County, GA, Wilkinson County, GA, Alexander County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Davie County, NC, Gaston County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Iredell County, NC, Jackson County, NC, Lincoln County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mecklenburg County, NC, Mitchell County, NC, Polk County, NC, Rowan County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Union County, NC, Yancey County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Edgefield County, SC, Greenville County, SC, Greenwood County, SC, Laurens County, SC, McCormick County, SC, Newberry County, SC, Oconee County, SC, Pickens County, SC, Saluda County, SC, Spartanburg County, SC, Union County, SC, York County, SC
The radar
The Greer radar (KGSP), 59 km from the middle of the area, began a volume at 22:40 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 10%
- 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
42 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 5:42 PM EST | Severe Thunderstorm Warning | GSP | Graham, Macon, Swain | 50 min |
| Jan 11, 5:59 PM EST | Severe Thunderstorm Warning | GSP | Habersham, Rabun, Stephens | 61 min |
| Jan 11, 6:10 PM EST | Severe Thunderstorm Warning | GSP | Haywood, Jackson, Macon, Swain | 41 min |
| Jan 11, 6:31 PM EST | Severe Thunderstorm Warning | GSP | Buncombe, Haywood, Jackson, Madison, Transylvania | 44 min |
| Jan 11, 6:42 PM EST | Severe Thunderstorm Warning | GSP | Franklin, Hart, Rabun, Stephens | 48 min |
| Jan 11, 6:52 PM EST | Severe Thunderstorm Warning | FFC | Jasper, Morgan, Putnam | 38 min |
| Jan 11, 6:58 PM EST | Severe Thunderstorm Warning | FFC | Bibb, Crawford, Houston, Peach, Taylor, Twiggs | 47 min |
| Jan 11, 7:02 PM EST | Severe Thunderstorm Warning | GSP | Buncombe, Haywood, Henderson, Transylvania | 43 min |
| Jan 11, 7:13 PM EST | Severe Thunderstorm Warning | GSP | Greenville, Pickens | 62 min |
| Jan 11, 7:14 PM EST | Severe Thunderstorm Warning | FFC | Dooly, Houston, Macon, Peach, Sumter, Twiggs | 46 min |
| Jan 11, 7:32 PM EST | Severe Thunderstorm Warning | GSP | Buncombe, Henderson, McDowell, Polk, Rutherford, Yancey | 31 min |
| Jan 11, 7:39 PM EST | Severe Thunderstorm Warning | GSP | Elbert, Franklin, Hart | 51 min |
| Jan 11, 7:43 PM EST | Severe Thunderstorm Warning | FFC | Baldwin, Bibb, Jones, Twiggs, Washington, Wilkinson | 47 min |
| Jan 11, 7:53 PM EST | Severe Thunderstorm Warning | GSP | Burke, McDowell, Mitchell, Polk, Rutherford, Yancey | 52 min |
| Jan 11, 7:54 PM EST | Severe Thunderstorm Warning | FFC | Bleckley, Dodge, Houston, Laurens, Pulaski, Twiggs and 1 more | 51 min |
| Jan 11, 7:54 PM EST | Tornado Warning | GSP | Hart | 36 min |
| Jan 11, 8:01 PM EST | Severe Thunderstorm Warning | FFC | Wilkes | 29 min |
| Jan 11, 8:02 PM EST | Severe Thunderstorm Warning | GSP | Avery, Burke, Caldwell | 43 min |
| Jan 11, 8:07 PM EST | Tornado Warning | FFC | Wilkes | 13 min |
| Jan 11, 8:13 PM EST | Severe Thunderstorm Warning | CAE | Lincoln | 32 min |
| Jan 11, 8:20 PM EST | Severe Thunderstorm Warning | FFC | Baldwin, Glascock, Hancock, Jefferson, Taliaferro, Warren and 2 more | 40 min |
| Jan 11, 8:21 PM EST | Severe Thunderstorm Warning | GSP | Elbert | 39 min |
| Jan 11, 8:22 PM EST | Severe Thunderstorm Warning | GSP | Alexander, Burke, Caldwell, Catawba, Cleveland, Lincoln and 2 more | 53 min |
| Jan 11, 8:25 PM EST | Severe Thunderstorm Warning | CAE | Columbia, Lincoln, McDuffie | 35 min |
| Jan 11, 8:29 PM EST | Severe Thunderstorm Warning | GSP | Anderson, Greenville, Laurens, Pickens, Spartanburg | 45 min |
| Jan 11, 8:34 PM EST | Tornado Warning | GSP | Abbeville, Greenwood, Laurens | 26 min |
| Jan 11, 8:51 PM EST | Severe Thunderstorm Warning | CAE | Columbia, Lincoln, McDuffie | 39 min |
| Jan 11, 8:53 PM EST | Severe Thunderstorm Warning | CAE | Burke, Columbia, McDuffie, Richmond | 52 min |
| Jan 11, 8:56 PM EST | Severe Thunderstorm Warning | GSP | Greenwood, Laurens, Spartanburg, Union | 49 min |
| Jan 11, 8:57 PM EST | Severe Thunderstorm Warning | GSP | Alexander, Catawba, Cleveland, Gaston, Iredell, Lincoln | 48 min |
| Jan 11, 8:59 PM EST | Severe Thunderstorm Warning | GSP | Cherokee, Spartanburg, Union | 46 min |
| Jan 11, 9:12 PM EST | Severe Thunderstorm Warning | CAE | Fairfield, Newberry, Saluda | 48 min |
| Jan 11, 9:21 PM EST | Severe Thunderstorm Warning | GSP | Cherokee, Chester, Union, York | 39 min |
| Jan 11, 9:32 PM EST | Severe Thunderstorm Warning | CAE | Aiken, Edgefield, Fairfield, Lexington, Newberry, Richland and 1 more | 43 min |
| Jan 11, 9:36 PM EST | Flash Flood Warning | GSP | McDowell | 3 hr |
| Jan 11, 9:36 PM EST | Tornado Warning | GSP | Chester, Union, York | 24 min |
| Jan 11, 9:37 PM EST | Tornado Warning | CAE | Fairfield, Newberry | 23 min |
| Jan 11, 9:41 PM EST | Severe Thunderstorm Warning | GSP | Cabarrus, Catawba, Davie, Gaston, Iredell, Lincoln and 2 more | 49 min |
| Jan 11, 9:46 PM EST | Severe Thunderstorm Warning | CAE | Burke, Richmond | 44 min |
| Jan 11, 9:55 PM EST | Severe Thunderstorm Warning | GSP | Mecklenburg, Union | 65 min |
| Jan 11, 10:19 PM EST | Severe Thunderstorm Warning | GSP | Cabarrus, Davie, Mecklenburg, Rowan | 41 min |
| Jan 11, 10:31 PM EST | Tornado Warning | GSP | Union | 17 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, 10.6 hours before the alert went out and 219 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
The text
As transmitted.
149 WWUS20 KWNS 112235 SEL7 SPC WW 112235 GAZ000-NCZ000-SCZ000-120500- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 17 NWS Storm Prediction Center Norman OK 535 PM EST Sat Jan 11 2020 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of East and Northeast Georgia Western North Carolina Western South Carolina * Effective this Saturday afternoon from 535 PM until Midnight EST. * Primary threats include... A couple tornadoes possible Scattered damaging wind gusts to 70 mph possible SUMMARY...A well-organized/fast-moving line of storms will continue to steadily progress east-northeastward across the region this evening. Damaging winds and a couple of tornadoes will be possible within a weak instability/high shear scenario. The tornado watch area is approximately along and 50 statute miles east and west of a line from 30 miles east northeast of Hot Springs NC to 50 miles west southwest of Vidalia GA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. && OTHER WATCH INFORMATION...CONTINUE...WW 15...WW 16... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 26045. ...Guyer
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 10:28 AM EST | Mesoscale Discussion | SPC | Catoosa, Dade, Walker | 92 min |
| Jan 11, 1:20 PM EST | Mesoscale Discussion | SPC | Bartow, Carroll, Catoosa, Chattooga, Cherokee, Cobb and 17 more | 85 min |
| Jan 11, 1:42 PM EST | Tornado Watch | SPC | Banks, Barrow, Bartow, Bibb, Butts, Carroll and 61 more | 7 hr |
| Jan 11, 3:26 PM EST | Mesoscale Discussion | SPC | Baker, Calhoun, Clay, Decatur, Early, Miller and 4 more | 94 min |
| Jan 11, 3:44 PM EST | Tornado Watch | SPC | Baker, Calhoun, Clay, Decatur, Dougherty, Early and 9 more | 5 hr |
| Jan 11, 4:16 PM EST | Mesoscale Discussion | SPC | Bartow, Carroll, Chattahoochee, Cherokee, Clayton, Cobb and 36 more | 89 min |
| Jan 11, 4:48 PM EST | Mesoscale Discussion | SPC | Banks, Elbert, Franklin, Habersham, Hart, Madison and 2 more | 117 min |
| Jan 11, 6:21 PM EST | Mesoscale Discussion | SPC | Baker, Brooks, Calhoun, Colquitt, Cook, Decatur and 13 more | 114 min |
| Jan 11, 6:36 PM EST | Mesoscale Discussion | SPC | Baldwin, Banks, Barrow, Bibb, Bleckley, Butts and 63 more | 84 min |
| Jan 11, 12:58 AM EST | Tornado Watch | SPC | Crockett, Dyer, Fayette, Gibson, Haywood, Lake and 4 more | 7 hr |
| Jan 11, 4:52 AM EST | Mesoscale Discussion | SPC | Crockett, Dyer, Fayette, Hardeman, Haywood, Lauderdale and 3 more | 83 min |
| Jan 11, 5:17 AM EST | Tornado Watch | SPC | Benton, Carroll, Chester, Decatur, Hardeman, Hardin and 5 more | 6 hr |
| Jan 11, 6:06 AM EST | Mesoscale Discussion | SPC | Fayette, Hardeman, McNairy | 54 min |
| Jan 11, 7:12 AM EST | Mesoscale Discussion | SPC | Benton, Cheatham, Davidson, Dickson, Giles, Hickman and 14 more | 93 min |
| Jan 11, 7:57 AM EST | Tornado Watch | SPC | Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 34 more | 7 hr |
| Jan 11, 9:20 AM EST | Mesoscale Discussion | SPC | Bledsoe, Cannon, Clay, Cumberland, DeKalb, Fentress and 11 more | 55 min |
Nearby
Tornado Watches in Georgia, 2020Tornado Watches in North Carolina, 2020Tornado Watches in South Carolina, 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.