Alert archive / Georgia / Mesoscale Discussions in 2013
Mesoscale Discussion 576
The Storm Prediction Center issued this mesoscale discussion at Apr 28, 2013, 6:09 PM EDT for 38 counties in Georgia; 7 counties in South Carolina. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- Apr 28, 2013, 6:09 PM EDT (22:09 UTC)
- Expired
- Apr 28, 2013, 7:15 PM EDT
- In force
- 66 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 45 counties
Baldwin County, GA, Bibb County, GA, Bleckley County, GA, Burke County, GA, Butts County, GA, Columbia County, GA, Crawford County, GA, Emanuel County, GA, Glascock County, GA, Greene County, GA, Hancock County, GA, Houston County, GA, Jasper County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Laurens County, GA, Macon County, GA, McDuffie County, GA, Meriwether County, GA, Monroe County, GA, Peach County, GA, Pike County, GA, Pulaski County, GA, Putnam County, GA, Richmond County, GA, Spalding County, GA, Talbot County, GA, Taliaferro County, GA, Taylor County, GA, Treutlen County, GA, Twiggs County, GA, Upson County, GA, Warren County, GA, Washington County, GA, Wilkinson County, GA, Aiken County, SC, Barnwell County, SC, Calhoun County, SC, Edgefield County, SC, Lexington County, SC, Richland County, SC, Saluda County, SC
The radar
The Robins AFB radar (KJGX), 100 km from the middle of the area, began a volume at 22:10 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, 10.2 hours before the alert went out and 181 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
- 511 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 308 m²/s²
- 0-3 km storm-relative helicity
- 379 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 |
|---|---|---|---|---|
| Apr 27, 9:56 PM EDT | Mesoscale Discussion | SPC | Catoosa, Chattooga, Dade, Walker | 64 min |
| Apr 28, 1:37 PM EDT | Mesoscale Discussion | SPC | Bibb, Bleckley, Butts, Chattahoochee, Clay, Coweta and 33 more | 83 min |
Nearby
Mesoscale Discussions in Georgia, 2013Mesoscale Discussions in South Carolina, 2013Every mesoscale discussion in 2013
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.