Alert archive / Georgia / Mesoscale Discussions in 2013
Mesoscale Discussion 574
The Storm Prediction Center issued this mesoscale discussion at Apr 28, 2013, 12:37 PM CDT for 16 counties in Alabama; 39 counties in Georgia. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Apr 28, 2013, 12:37 PM CDT (17:37 UTC)
- Expired
- Apr 28, 2013, 2:00 PM CDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 55 counties
Barbour County, AL, Bullock County, AL, Butler County, AL, Chambers County, AL, Conecuh County, AL, Crenshaw County, AL, Elmore County, AL, Henry County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Russell County, AL, Tallapoosa County, AL, Bibb County, GA, Bleckley County, GA, Butts County, GA, Chattahoochee County, GA, Clay County, GA, Coweta County, GA, Crawford County, GA, Crisp County, GA, Dooly County, GA, Fayette County, GA, Harris County, GA, Houston County, GA, Jasper County, GA, Jones County, GA, Lamar County, GA, Lee County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Monroe County, GA, Muscogee County, GA, Peach County, GA, Pike County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Terrell County, GA, Troup County, GA, Twiggs County, GA, Upson County, GA, Webster County, GA, Wilcox County, GA, Wilkinson County, GA
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 5.6 hours before the alert went out and 187 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, 8:56 PM CDT | Mesoscale Discussion | SPC | Blount, Calhoun, Cherokee, Cleburne, Colbert, Cullman and 12 more | 64 min |
| Apr 27, 10:25 PM CDT | Mesoscale Discussion | SPC | Colbert, Lauderdale | 2 hr |
| Apr 28, 5:09 PM CDT | Mesoscale Discussion | SPC | Baldwin, Bibb, Bleckley, Burke, Butts, Columbia and 32 more | 66 min |
Nearby
Mesoscale Discussions in Georgia, 2013Mesoscale Discussions in Alabama, 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.