Alert archive / Georgia / Mesoscale Discussions in 2006
Mesoscale Discussion 853
The Storm Prediction Center issued this mesoscale discussion at May 13, 2006, 7:57 PM EDT for 28 counties in Georgia; Cherokee County, Clay County, Graham County, North Carolina; 7 counties in Tennessee. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- May 13, 2006, 7:57 PM EDT (23:57 UTC)
- Expired
- May 13, 2006, 9:00 PM EDT
- In force
- 63 min
- Issued by
- the Storm Prediction Center
All 38 counties
Banks County, GA, Bartow County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Cobb County, GA, Dade County, GA, Dawson County, GA, Fannin County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Gwinnett County, GA, Habersham County, GA, Hall County, GA, Lumpkin County, GA, Murray County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Rabun County, GA, Towns County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA, Cherokee County, NC, Clay County, NC, Graham County, NC, Bradley County, TN, Hamilton County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Polk County, TN, Sequatchie County, TN
The radar
The Atlanta radar (KFFC), 143 km from the middle of the area, began a volume at 23:59 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
Nashville Metro, TN (KBNA), launched 12:00Z, 12.0 hours before the alert went out and 249 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
- 1781 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 13, 2:37 PM EDT | Mesoscale Discussion | SPC | Decatur, Early, Miller, Seminole | 113 min |
| May 13, 6:59 PM EDT | Severe Thunderstorm Watch | SPC | Bedford, Coffee, Franklin, Giles, Grundy, Lawrence and 6 more | 6 hr |
Nearby
Mesoscale Discussions in Georgia, 2006Mesoscale Discussions in Tennessee, 2006Mesoscale Discussions in North Carolina, 2006Every mesoscale discussion in 2006
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.