Alert archive / Georgia / Mesoscale Discussions in 2018
Mesoscale Discussion 1126
The Storm Prediction Center issued this mesoscale discussion at Jul 21, 2018, 8:28 PM CDT for 4 counties in Alabama; 81 counties in Georgia; 11 counties in South Carolina. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2018, 8:28 PM CDT (01:28 UTC)
- Expired
- Jul 21, 2018, 10:00 PM CDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
All 96 counties
Chambers County, AL, Henry County, AL, Lee County, AL, Russell County, AL, Baker County, GA, Baldwin County, GA, Banks County, GA, Barrow County, GA, Bibb County, GA, Butts County, GA, Calhoun County, GA, Carroll County, GA, Chattahoochee County, GA, Clarke County, GA, Clay County, GA, Clayton County, GA, Cobb County, GA, Columbia County, GA, Coweta County, GA, Crawford County, GA, Crisp County, GA, Decatur County, GA, DeKalb County, GA, Dooly County, GA, Dougherty County, GA, Douglas County, GA, Early County, GA, Elbert County, GA, Fayette County, GA, Forsyth County, GA, Franklin County, GA, Fulton County, GA, Glascock County, GA, Grady County, GA, Greene County, GA, Gwinnett County, GA, Hall County, GA, Hancock County, GA, Harris County, GA, Hart County, GA, Heard County, GA, Henry County, GA, Houston County, GA, Jackson County, GA, Jasper County, GA, Jones County, GA, Lamar County, GA, Lee County, GA, Lincoln County, GA, Macon County, GA, Madison County, GA, Marion County, GA, McDuffie County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Monroe County, GA, Morgan County, GA, Muscogee County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Peach County, GA, Pike County, GA, Putnam County, GA, Quitman County, GA, Randolph County, GA, Rockdale County, GA, Schley County, GA, Seminole County, GA, Spalding County, GA, Stephens County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taliaferro County, GA, Taylor County, GA, Terrell County, GA, Troup County, GA, Upson County, GA, Walton County, GA, Warren County, GA, Webster County, GA, Wilkes County, GA, Worth County, GA, Abbeville County, SC, Anderson 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
The radar
The Robins AFB radar (KJGX), 39 km from the middle of the area, began a volume at 01:30 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.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.5 hours before the alert went out and 99 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
- 2306 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 902 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.5
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 10:29 PM CDT | Mesoscale Discussion | SPC | Butler, Coffee, Conecuh, Covington, Crenshaw, Escambia and 2 more | 2 hr |
| Jul 22, 10:15 AM CDT | Severe Thunderstorm Watch | SPC | Coffee, Dale, Geneva, Henry, Houston | 10 hr |
| Jul 22, 11:27 AM CDT | Mesoscale Discussion | SPC | Butler, Clarke, Coffee, Conecuh, Covington, Crenshaw and 6 more | 63 min |
| Jul 22, 11:57 AM CDT | Severe Thunderstorm Watch | SPC | Baldwin, Butler, Clarke, Conecuh, Covington, Crenshaw and 5 more | 7 hr |
| Jul 22, 12:58 PM CDT | Mesoscale Discussion | SPC | Butler, Clarke, Coffee, Conecuh, Covington, Crenshaw and 6 more | 62 min |
| Jul 22, 1:56 PM CDT | Mesoscale Discussion | SPC | Baldwin, Bullock, Butler, Choctaw, Clarke, Coffee and 16 more | 2 hr |
| Jul 22, 3:05 PM CDT | Mesoscale Discussion | SPC | Houston | 115 min |
| Jul 22, 6:39 PM CDT | Mesoscale Discussion | SPC | Brooks, Colquitt, Cook, Echols, Lanier, Lowndes and 1 more | 66 min |
| Jul 22, 2:35 AM CDT | Mesoscale Discussion | SPC | Berkeley, Georgetown, Horry, Williamsburg | 2 hr |
Nearby
Mesoscale Discussions in Georgia, 2018Mesoscale Discussions in South Carolina, 2018Mesoscale Discussions in Alabama, 2018Every mesoscale discussion in 2018
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.