Alert archive / Georgia / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 130
The Storm Prediction Center issued this severe thunderstorm watch at Apr 5, 2017, 11:50 PM EDT for 30 counties in Georgia; 11 counties in North Carolina; 20 counties in South Carolina. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 5, 2017, 11:50 PM EDT (03:50 UTC)
- Expired
- Apr 6, 2017, 6:19 AM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 61 counties
Baldwin County, GA, Bleckley County, GA, Burke County, GA, Clarke County, GA, Columbia County, GA, Elbert County, GA, Franklin County, GA, Glascock County, GA, Greene County, GA, Hancock County, GA, Hart County, GA, Houston County, GA, Jefferson County, GA, Johnson County, GA, Laurens County, GA, Lincoln County, GA, Macon County, GA, Madison County, GA, McDuffie County, GA, Oconee County, GA, Oglethorpe County, GA, Peach County, GA, Richmond County, GA, Schley County, GA, Taliaferro County, GA, Twiggs County, GA, Warren County, GA, Washington County, GA, Wilkes County, GA, Wilkinson County, GA, Alexander County, NC, Cabarrus County, NC, Catawba County, NC, Cleveland County, NC, Davie County, NC, Gaston County, NC, Iredell County, NC, Lincoln County, NC, Mecklenburg County, NC, Rowan County, NC, Union County, NC, Abbeville County, SC, Aiken County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Edgefield County, SC, Fairfield County, SC, Greenville County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Richland County, SC, Saluda County, SC, Spartanburg County, SC, Union County, SC, York County, SC
The radar
The Greer radar (KGSP), 93 km from the middle of the area, began a volume at 03:54 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
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 11:55 PM EDT | Severe Thunderstorm Warning | FFC | Greene, Morgan, Newton, Oconee, Walton | 20 min |
| Apr 5, 11:55 PM EDT | Severe Thunderstorm Warning | GSP | Elbert, Hart | 50 min |
| Apr 6, 12:24 AM EDT | Severe Thunderstorm Warning | GSP | Abbeville, Anderson, Greenville, Laurens, Pickens, Spartanburg | 51 min |
| Apr 6, 12:30 AM EDT | Severe Thunderstorm Warning | GSP | Burke, Caldwell, Catawba, Cleveland, Lincoln, Rutherford | 45 min |
| Apr 6, 12:39 AM EDT | Severe Thunderstorm Warning | GSP | Elbert, Hart | 30 min |
| Apr 6, 12:52 AM EDT | Severe Thunderstorm Warning | GSP | Alexander, Catawba, Iredell, Lincoln | 38 min |
| Apr 6, 1:00 AM EDT | Severe Thunderstorm Warning | GSP | Cherokee, Chester, Laurens, Spartanburg, Union, York | 32 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 00:00Z, 3.8 hours before the alert went out and 196 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
- 723 J/kg
- Mixed-layer CIN
- -120 J/kg
- Mixed-layer LCL
- 594 m above ground
- 0-6 km bulk shear
- 93 kt
- 0-1 km storm-relative helicity
- 354 m²/s²
- 0-3 km storm-relative helicity
- 356 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 9.8
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 9:58 PM EDT | Tornado Watch | SPC | Bibb, Butts, Chattahoochee, Clayton, Coweta, Crawford and 27 more | 3 hr |
| Apr 5, 11:15 PM EDT | Mesoscale Discussion | SPC | Charlton, Echols | 2 hr |
| Apr 5, 11:34 PM EDT | Mesoscale Discussion | SPC | Elbert, Lincoln, Wilkes | 56 min |
| Apr 6, 12:15 AM EDT | Tornado Watch | SPC | Brantley, Camden, Charlton, Clinch, Echols, Glynn and 1 more | 6 hr |
| Apr 6, 2:54 AM EDT | Mesoscale Discussion | SPC | Burke, Columbia, Dodge, Emanuel, Jefferson, Jenkins and 4 more | 96 min |
| Apr 6, 3:12 AM EDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Berrien, Brantley, Brooks and 12 more | 2 hr |
| Apr 6, 12:51 AM EDT | Mesoscale Discussion | SPC | Alamance, Anson, Caswell, Chatham, Davidson, Durham and 15 more | 114 min |
| Apr 6, 5:59 AM EDT | Mesoscale Discussion | SPC | Alamance, Bertie, Camden, Caswell, Chatham, Chowan and 32 more | 91 min |
| Apr 6, 7:06 AM EDT | Tornado Watch | SPC | Alamance, Bertie, Camden, Chatham, Chowan, Cumberland and 31 more | 8 hr |
| Apr 6, 10:38 AM EDT | Mesoscale Discussion | SPC | Bertie, Chowan, Edgecombe, Gates, Greene, Halifax and 8 more | 67 min |
Nearby
Severe Thunderstorm Watches in Georgia, 2017Severe Thunderstorm Watches in South Carolina, 2017Severe Thunderstorm Watches in North Carolina, 2017Every severe thunderstorm watch in 2017
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.