Alert archive / South Carolina / Severe Thunderstorm Watches in 2020
Severe Thunderstorm Watch 202
The Storm Prediction Center issued this severe thunderstorm watch at May 22, 2020, 1:18 PM EDT for 15 counties in Georgia; 14 counties in North Carolina; 24 counties in South Carolina. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 22, 2020, 1:18 PM EDT (17:18 UTC)
- Expired
- May 22, 2020, 7:20 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 53 counties
Banks County, GA, Clarke County, GA, Elbert County, GA, Franklin County, GA, Habersham County, GA, Hall County, GA, Hart County, GA, Jackson County, GA, Lincoln County, GA, Madison County, GA, Oglethorpe County, GA, Rabun County, GA, Stephens County, GA, White County, GA, Wilkes County, GA, Burke County, NC, Cabarrus County, NC, Catawba County, NC, Cleveland County, NC, Davie County, NC, Gaston County, NC, Iredell County, NC, Lincoln County, NC, McDowell County, NC, Mecklenburg County, NC, Polk County, NC, Rowan County, NC, Rutherford County, NC, Union County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Edgefield County, SC, Fairfield County, SC, Greenville County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Oconee County, SC, Pickens County, SC, Richland County, SC, Saluda County, SC, Spartanburg County, SC, Sumter County, SC, Union County, SC, York County, SC
The radar
The Greer radar (KGSP), 11 km from the middle of the area, began a volume at 17:20 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
36 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 1:48 PM EDT | Severe Thunderstorm Warning | GSP | Greenville, Oconee, Pickens | 42 min |
| May 22, 1:53 PM EDT | Severe Thunderstorm Warning | FFC | Banks, Jackson, Madison | 52 min |
| May 22, 2:01 PM EDT | Severe Thunderstorm Warning | GSP | Franklin | 44 min |
| May 22, 2:10 PM EDT | Severe Thunderstorm Warning | FFC | Jackson, Madison | 50 min |
| May 22, 2:24 PM EDT | Severe Thunderstorm Warning | GSP | Anderson, Greenville, Laurens, Pickens, Spartanburg | 51 min |
| May 22, 2:26 PM EDT | Severe Thunderstorm Warning | GSP | Elbert, Franklin, Hart | 49 min |
| May 22, 2:42 PM EDT | Severe Thunderstorm Warning | GSP | Elbert, Hart | 48 min |
| May 22, 2:58 PM EDT | Severe Thunderstorm Warning | GSP | Cleveland, Polk, Rutherford | 47 min |
| May 22, 3:23 PM EDT | Severe Thunderstorm Warning | CAE | Aiken, Edgefield | 52 min |
| May 22, 3:25 PM EDT | Severe Thunderstorm Warning | GSP | Abbeville, Greenwood | 50 min |
| May 22, 3:31 PM EDT | Tornado Warning | GSP | Cleveland, Gaston | 29 min |
| May 22, 3:34 PM EDT | Severe Thunderstorm Warning | GSP | Cleveland, Gaston | 26 min |
| May 22, 3:35 PM EDT | Severe Thunderstorm Warning | CAE | Lincoln | 55 min |
| May 22, 3:37 PM EDT | Severe Thunderstorm Warning | GSP | Cherokee, Chester, Union, York | 38 min |
| May 22, 3:44 PM EDT | Severe Thunderstorm Warning | GSP | Elbert | 31 min |
| May 22, 3:49 PM EDT | Severe Thunderstorm Warning | CAE | Fairfield, Newberry | 56 min |
| May 22, 3:51 PM EDT | Severe Thunderstorm Warning | GSP | Gaston, Mecklenburg, Union | 24 min |
| May 22, 3:53 PM EDT | Tornado Warning | GSP | Gaston, Mecklenburg | 26 min |
| May 22, 4:01 PM EDT | Severe Thunderstorm Warning | CAE | Lancaster | 44 min |
| May 22, 4:11 PM EDT | Severe Thunderstorm Warning | CAE | Calhoun, Lexington, Orangeburg, Richland | 34 min |
| May 22, 4:12 PM EDT | Severe Thunderstorm Warning | GSP | Cabarrus, Gaston, Iredell, Lincoln, Mecklenburg, Union | 33 min |
| May 22, 4:13 PM EDT | Severe Thunderstorm Warning | CAE | Aiken, Lexington | 32 min |
| May 22, 4:17 PM EDT | Severe Thunderstorm Warning | GSP | Chester | 13 min |
| May 22, 4:21 PM EDT | Severe Thunderstorm Warning | GSP | Greenwood | 24 min |
| May 22, 4:24 PM EDT | Tornado Warning | GSP | Chester | 7 min |
| May 22, 4:30 PM EDT | Severe Thunderstorm Warning | GSP | Union | 30 min |
| May 22, 4:31 PM EDT | Severe Thunderstorm Warning | CAE | Chesterfield, Fairfield, Kershaw, Lancaster | 59 min |
| May 22, 4:36 PM EDT | Severe Thunderstorm Warning | CAE | Edgefield, Fairfield, Lexington, McCormick, Newberry, Richland and 1 more | 54 min |
| May 22, 4:55 PM EDT | Severe Thunderstorm Warning | CAE | Calhoun, Orangeburg, Richland | 50 min |
| May 22, 5:09 PM EDT | Severe Thunderstorm Warning | CAE | Chesterfield | 37 min |
| May 22, 5:10 PM EDT | Severe Thunderstorm Warning | CAE | Kershaw, Richland | 50 min |
| May 22, 5:29 PM EDT | Severe Thunderstorm Warning | CAE | Aiken, Edgefield, Lexington, Newberry, Richland, Saluda | 31 min |
| May 22, 5:52 PM EDT | Severe Thunderstorm Warning | CAE | Calhoun, Clarendon, Richland, Sumter | 38 min |
| May 22, 5:59 PM EDT | Severe Thunderstorm Warning | CAE | Kershaw, Lexington, Richland, Sumter | 46 min |
| May 22, 6:09 PM EDT | Severe Thunderstorm Warning | CAE | Clarendon, Lee, Sumter | 51 min |
| May 22, 6:38 PM EDT | Severe Thunderstorm Warning | CAE | Calhoun, Clarendon, Orangeburg, Sumter | 52 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 5.3 hours before the alert went out and 249 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 786 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -44 m²/s²
- 0-3 km storm-relative helicity
- 30 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 |
|---|---|---|---|---|
| May 22, 12:43 PM EDT | Mesoscale Discussion | SPC | Elbert, Franklin, Hart, Madison, Oglethorpe, Stephens | 62 min |
| May 22, 3:49 PM EDT | Mesoscale Discussion | SPC | Anson, Bladen, Cabarrus, Columbus, Cumberland, Duplin and 11 more | 86 min |
| May 22, 4:14 PM EDT | Severe Thunderstorm Watch | SPC | Anson, Bladen, Brunswick, Chatham, Columbus, Cumberland and 23 more | 5 hr |
| May 22, 6:40 PM EDT | Mesoscale Discussion | SPC | Bladen, Columbus, Cumberland, Duplin, Greene, Harnett and 14 more | 95 min |
Nearby
Severe Thunderstorm Watches in South Carolina, 2020Severe Thunderstorm Watches in Georgia, 2020Severe Thunderstorm Watches in North Carolina, 2020Every severe thunderstorm 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.