Alert archive / Georgia / Mesoscale Discussions in 2020
Mesoscale Discussion 91
The Storm Prediction Center issued this mesoscale discussion at Feb 6, 2020, 11:45 AM EST for 8 counties in Florida; 63 counties in Georgia; 11 counties in South Carolina. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Feb 6, 2020, 11:45 AM EST (16:45 UTC)
- Expired
- Feb 6, 2020, 1:15 PM EST
- In force
- 90 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 95%
All 82 counties
Gadsden County, FL, Hamilton County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Taylor County, FL, Wakulla County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Baldwin County, GA, Ben Hill County, GA, Berrien County, GA, Bleckley County, GA, Brooks County, GA, Bulloch County, GA, Burke County, GA, Candler County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Columbia County, GA, Cook County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glascock County, GA, Grady County, GA, Hancock County, GA, Houston County, GA, Irwin County, GA, Jeff Davis County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Lanier County, GA, Laurens County, GA, Lee County, GA, Long County, GA, Lowndes County, GA, McDuffie County, GA, Mitchell County, GA, Montgomery County, GA, Pierce County, GA, Pulaski County, GA, Richmond County, GA, Screven County, GA, Tattnall County, GA, Telfair County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Turner County, GA, Twiggs County, GA, Ware County, GA, Warren County, GA, Washington County, GA, Wayne County, GA, Wheeler County, GA, Wilcox County, GA, Wilkinson County, GA, Worth County, GA, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Edgefield County, SC, Hampton County, SC, Lexington County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC
The radar
The Robins AFB radar (KJGX), 70 km from the middle of the area, began a volume at 16:47 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 4.8 hours before the alert went out and 199 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
- 732 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 514 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 297 m²/s²
- 0-3 km storm-relative helicity
- 391 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 5.3
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 |
|---|---|---|---|---|
| Feb 6, 3:02 AM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Escambia, Gulf, Holmes, Jackson and 4 more | 88 min |
| Feb 6, 4:27 AM EST | Tornado Watch | SPC | Bay, Calhoun, Escambia, Gulf, Holmes, Jackson and 4 more | 9 hr |
| Feb 6, 11:00 AM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Holmes, Jackson, Okaloosa, Santa Rosa and 2 more | 2 hr |
| Feb 6, 12:17 PM EST | Tornado Watch | SPC | Baker, Bay, Calhoun, Columbia, Dixie, Franklin and 15 more | 8 hr |
| Feb 6, 2:32 PM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Columbia, Franklin, Gadsden, Gulf and 11 more | 58 min |
| Feb 6, 4:29 PM EST | Mesoscale Discussion | SPC | Baker, Calhoun, Columbia, Franklin, Gadsden, Gulf and 9 more | 2 hr |
| Feb 6, 5:30 PM EST | Tornado Watch | SPC | Alachua, Baker, Bradford, Citrus, Clay, Columbia and 11 more | 7 hr |
| Feb 5, 7:33 PM EST | Mesoscale Discussion | SPC | Catoosa, Dade | 117 min |
| Feb 6, 7:40 AM EST | Mesoscale Discussion | SPC | Carroll, Clayton, Cobb, Coweta, DeKalb, Douglas and 11 more | 95 min |
| Feb 6, 9:50 AM EST | Mesoscale Discussion | SPC | Clarke, Columbia, Elbert, Greene, Hart, Lincoln and 6 more | 55 min |
| Feb 6, 10:12 AM EST | Tornado Watch | SPC | Baldwin, Banks, Barrow, Clarke, Columbia, Elbert and 21 more | 7 hr |
| Feb 6, 1:08 PM EST | Mesoscale Discussion | SPC | Abbeville, Chester, Chesterfield, Fairfield, Greenwood, Lancaster and 3 more | 97 min |
| Feb 6, 4:00 PM EST | Mesoscale Discussion | SPC | Dillon, Florence, Georgetown, Horry, Marion, Williamsburg | 60 min |
| Feb 6, 4:23 PM EST | Tornado Watch | SPC | Darlington, Dillon, Florence, Georgetown, Horry, Marion and 2 more | 9 hr |
Nearby
Mesoscale Discussions in Georgia, 2020Mesoscale Discussions in South Carolina, 2020Mesoscale Discussions in Florida, 2020Every mesoscale discussion 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.