Alert archive / Georgia / Mesoscale Discussions in 2009
Mesoscale Discussion 2004
The Storm Prediction Center issued this mesoscale discussion at Sep 9, 2009, 11:39 AM CDT for 5 states. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Sep 9, 2009, 11:39 AM CDT (16:39 UTC)
- Expired
- Sep 9, 2009, 1:15 PM CDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
All 89 counties
DeKalb County, AL, Jackson County, AL, Madison County, AL, Marshall County, AL, Banks County, GA, Bartow County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Dade County, GA, Dawson County, GA, Elbert County, GA, Fannin County, GA, Floyd County, GA, Forsyth County, GA, Franklin County, GA, Gilmer County, GA, Gordon County, GA, Habersham County, GA, Hall County, GA, Hart County, GA, Jackson County, GA, Lumpkin County, GA, Madison County, GA, Murray County, GA, Pickens County, GA, Rabun County, GA, Stephens County, GA, Towns County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA, Alexander County, NC, Ashe County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Catawba County, NC, Cherokee County, NC, Clay County, NC, Cleveland County, NC, Gaston County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Iredell County, NC, Jackson County, NC, Lincoln County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mecklenburg County, NC, Mitchell County, NC, Polk County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Watauga County, NC, Wilkes County, NC, Yancey County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Fairfield County, SC, Greenville County, SC, Greenwood County, SC, Laurens County, SC, Newberry County, SC, Oconee County, SC, Pickens County, SC, Spartanburg County, SC, Union County, SC, York County, SC, Bradley County, TN, Carter County, TN, Franklin County, TN, Hamilton County, TN, Johnson County, TN, Lincoln County, TN, Marion County, TN, McMinn County, TN, Monroe County, TN, Moore County, TN, Polk County, TN, Sequatchie County, TN, Unicoi County, TN
The radar
The Greer radar (KGSP), 93 km from the middle of the area, began a volume at 16:40 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, 4.7 hours before the alert went out and 224 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
- 591 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 1104 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 |
|---|---|---|---|---|
| Sep 9, 11:39 AM CDT | Mesoscale Discussion | SPC | DeKalb, Jackson, Madison, Marshall | 96 min |
Nearby
Mesoscale Discussions in Georgia, 2009Mesoscale Discussions in North Carolina, 2009Mesoscale Discussions in South Carolina, 2009Every mesoscale discussion in 2009
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.