Alert archive / Georgia / Mesoscale Discussions in 2015
Mesoscale Discussion 1272
The Storm Prediction Center issued this mesoscale discussion at Jul 1, 2015, 5:20 PM CDT for 6 states. It was in force for 55 min.
The area
The outline as issued.
The facts
- Issued
- Jul 1, 2015, 5:20 PM CDT (22:20 UTC)
- Expired
- Jul 1, 2015, 6:15 PM CDT
- In force
- 55 min
- Issued by
- the Storm Prediction Center
All 75 counties
Blount County, AL, Calhoun County, AL, Cherokee County, AL, Clay County, AL, Cleburne County, AL, Etowah County, AL, Jefferson County, AL, Marion County, AL, Randolph County, AL, St. Clair County, AL, Talladega County, AL, Walker County, AL, Winston County, AL, Banks County, GA, Barrow County, GA, Bartow County, GA, Butts County, GA, Carroll County, GA, Cherokee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Dawson County, GA, DeKalb County, GA, Douglas 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, Heard County, GA, Henry County, GA, Jackson County, GA, Jasper County, GA, Lamar County, GA, Lumpkin County, GA, Meriwether County, GA, Monroe County, GA, Morgan County, GA, Murray County, GA, Newton County, GA, Oconee County, GA, Paulding County, GA, Pickens County, GA, Pike County, GA, Polk County, GA, Rabun County, GA, Rockdale County, GA, Spalding County, GA, Stephens County, GA, Towns County, GA, Troup County, GA, Union County, GA, Upson County, GA, Walton County, GA, White County, GA, Whitfield County, GA, Itawamba County, MS, Cherokee County, NC, Clay County, NC, Graham County, NC, Macon County, NC, Swain County, NC, Oconee County, SC, Blount County, TN, Monroe County, TN, Polk County, TN
The radar
The Northeast Alabama radar (KHTX), 95 km from the middle of the area, began a volume at 22:24 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, 10.3 hours before the alert went out and 136 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
- 124 J/kg
- Mixed-layer CIN
- -91 J/kg
- Mixed-layer LCL
- 722 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 11:29 AM CDT | Mesoscale Discussion | SPC | DeKalb, Jackson, Lauderdale, Limestone, Madison, Morgan | 61 min |
| Jul 1, 11:45 AM CDT | Severe Thunderstorm Watch | SPC | DeKalb, Jackson, Lauderdale, Lawrence, Limestone, Madison and 2 more | 6 hr |
| Jul 1, 3:04 PM CDT | Mesoscale Discussion | SPC | Blount, Calhoun, Cherokee, Cleburne, Cullman, DeKalb and 7 more | 116 min |
Nearby
Mesoscale Discussions in Georgia, 2015Mesoscale Discussions in Alabama, 2015Mesoscale Discussions in North Carolina, 2015Every mesoscale discussion in 2015
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.