Alert archive / Georgia / Mesoscale Discussions in 2017
Mesoscale Discussion 707
The Storm Prediction Center issued this mesoscale discussion at May 12, 2017, 1:06 PM CDT for 5 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 12, 2017, 1:06 PM CDT (18:06 UTC)
- Expired
- May 12, 2017, 3:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 103 counties
Blount County, AL, Calhoun County, AL, Cherokee County, AL, Clay County, AL, Cleburne County, AL, Cullman County, AL, DeKalb County, AL, Etowah County, AL, Jackson County, AL, Marshall County, AL, Randolph County, AL, St. Clair County, AL, Talladega County, AL, Banks County, GA, Barrow County, GA, Bartow County, GA, Butts County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Dade County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Elbert County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Franklin County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Gwinnett County, GA, Habersham County, GA, Hall County, GA, Haralson County, GA, Hart County, GA, Heard County, GA, Henry County, GA, Jackson County, GA, Lumpkin County, GA, Madison County, GA, Morgan County, GA, Murray County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Rabun County, GA, Rockdale County, GA, Spalding County, GA, Stephens County, GA, Towns County, GA, Union County, GA, Walker County, GA, Walton County, GA, White County, GA, Whitfield County, GA, Buncombe County, NC, Burke County, NC, Cherokee County, NC, Clay County, NC, Cleveland County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Jackson County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mitchell County, NC, Polk County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Yancey County, NC, Anderson County, SC, Greenville County, SC, Oconee County, SC, Pickens County, SC, Spartanburg County, SC, Blount County, TN, Bradley County, TN, Cocke County, TN, Grundy County, TN, Hamilton County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Polk County, TN, Rhea County, TN, Sequatchie County, TN, Sevier County, TN
The radar
The Atlanta radar (KFFC), 151 km from the middle of the area, began a volume at 18:06 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 12:00Z, 6.1 hours before the alert went out and 148 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
- 1299 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| May 12, 9:56 AM CDT | Mesoscale Discussion | SPC | Washington | 3 hr |
| May 12, 10:35 AM CDT | Severe Thunderstorm Watch | SPC | Baldwin, Escambia, Mobile | 5 hr |
| May 12, 10:56 AM CDT | Mesoscale Discussion | SPC | Bibb, Blount, Calhoun, Cherokee, Chilton, Clay and 16 more | 3 hr |
| May 12, 1:42 PM CDT | Mesoscale Discussion | SPC | Baldwin, Barbour, Butler, Coffee, Conecuh, Covington and 8 more | 108 min |
| May 11, 9:12 PM CDT | Mesoscale Discussion | SPC | Beaufort, Edgecombe, Franklin, Greene, Johnston, Lenoir and 6 more | 63 min |
| May 12, 5:33 PM CDT | Mesoscale Discussion | SPC | Berkeley, Chester, Chesterfield, Clarendon, Darlington, Fairfield and 13 more | 2 hr |
Nearby
Mesoscale Discussions in Georgia, 2017Mesoscale Discussions in North Carolina, 2017Mesoscale Discussions in Tennessee, 2017Every mesoscale discussion 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.