Alert archive / Georgia / Mesoscale Discussions in 2017
Mesoscale Discussion 896
The Storm Prediction Center issued this mesoscale discussion at May 28, 2017, 6:29 AM EDT for 27 counties in Georgia. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 28, 2017, 6:29 AM EDT (10:29 UTC)
- Expired
- May 28, 2017, 8:30 AM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Baldwin County, GA, Bibb County, GA, Butts County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, DeKalb County, GA, Fayette County, GA, Fulton County, GA, Greene County, GA, Gwinnett County, GA, Hancock County, GA, Henry County, GA, Jasper County, GA, Jones County, GA, Lamar County, GA, Monroe County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Pike County, GA, Putnam County, GA, Rockdale County, GA, Spalding County, GA, Twiggs County, GA, Walton County, GA, Wilkinson County, GA
The radar
The Atlanta radar (KFFC), 43 km from the middle of the area, began a volume at 10:29 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, 10.5 hours before the alert went out and 37 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
- 930 J/kg
- Mixed-layer CIN
- -238 J/kg
- Mixed-layer LCL
- 1118 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
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 27, 10:07 PM EDT | Severe Thunderstorm Watch | SPC | Banks, Bartow, Catoosa, Chattooga, Cherokee, Dade and 17 more | 8 hr |
| May 27, 11:16 PM EDT | Mesoscale Discussion | SPC | Elbert, Franklin, Habersham, Hart, Rabun, Stephens | 89 min |
| May 28, 12:13 AM EDT | Severe Thunderstorm Watch | SPC | Elbert, Franklin, Habersham, Hart, Rabun, Stephens | 3 hr |
| May 28, 3:11 AM EDT | Mesoscale Discussion | SPC | Carroll, Floyd, Haralson, Heard, Polk | 2 hr |
| May 28, 3:53 AM EDT | Severe Thunderstorm Watch | SPC | Butts, Carroll, Clayton, Cobb, Coweta, DeKalb and 16 more | 4 hr |
Nearby
Mesoscale Discussions in Georgia, 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.