Alert archive / Georgia / Mesoscale Discussions in 2008
Mesoscale Discussion 959
The Storm Prediction Center issued this mesoscale discussion at May 20, 2008, 9:05 PM EDT for 28 counties in Georgia. It was in force for 55 min.
The area
The outline as issued.
The facts
- Issued
- May 20, 2008, 9:05 PM EDT (01:05 UTC)
- Expired
- May 20, 2008, 10:00 PM EDT
- In force
- 55 min
- Issued by
- the Storm Prediction Center
All 28 counties
Baldwin County, GA, Bibb County, GA, Bleckley County, GA, Burke County, GA, Crawford County, GA, Dodge County, GA, Dooly County, GA, Emanuel County, GA, Glascock County, GA, Harris County, GA, Houston County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Laurens County, GA, Macon County, GA, Marion County, GA, Peach County, GA, Pulaski County, GA, Schley County, GA, Talbot County, GA, Taylor County, GA, Treutlen County, GA, Twiggs County, GA, Upson County, GA, Washington County, GA, Wilkinson County, GA
The radar
The Robins AFB radar (KJGX), 20 km from the middle of the area, began a volume at 01:08 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 00:00Z, 1.1 hours before the alert went out and 113 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
- 1497 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1479 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 221 m²/s²
- 0-3 km storm-relative helicity
- 270 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 8.0
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 |
|---|---|---|---|---|
| May 20, 9:42 PM EDT | Severe Thunderstorm Watch | SPC | Baldwin, Bibb, Bleckley, Bryan, Bulloch, Candler and 38 more | 4 hr |
| May 21, 12:09 AM EDT | Mesoscale Discussion | SPC | Appling, Ben Hill, Bryan, Crisp, Evans, Jeff Davis and 10 more | 66 min |
| May 21, 2:04 PM EDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 35 more | 86 min |
| May 21, 2:26 PM EDT | Severe Thunderstorm Watch | SPC | Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 35 more | 8 hr |
| May 21, 5:50 PM EDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Baker, Berrien, Brantley and 25 more | 55 min |
Nearby
Mesoscale Discussions in Georgia, 2008Every mesoscale discussion in 2008
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.