Alert archive / Georgia / Mesoscale Discussions in 2012
Mesoscale Discussion 2225
The Storm Prediction Center issued this mesoscale discussion at Dec 25, 2012, 8:49 PM CST for 15 counties in Alabama; 11 counties in Florida; 21 counties in Georgia. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- Dec 25, 2012, 8:49 PM CST (02:49 UTC)
- Expired
- Dec 25, 2012, 9:45 PM CST
- In force
- 56 min
- Issued by
- the Storm Prediction Center
All 47 counties
Barbour County, AL, Bullock County, AL, Coffee County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Macon County, AL, Montgomery County, AL, Pike County, AL, Russell County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Liberty County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Calhoun County, GA, Chattahoochee County, GA, Clay County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Harris County, GA, Lee County, GA, Macon County, GA, Marion County, GA, Miller County, GA, Muscogee County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Seminole County, GA, Stewart County, GA, Sumter County, GA, Terrell County, GA, Webster County, GA
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, 2.8 hours before the alert went out and 183 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
- 520 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 178 m²/s²
- 0-3 km storm-relative helicity
- 596 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 |
|---|---|---|---|---|
| Dec 25, 6:05 PM CST | Mesoscale Discussion | SPC | Bibb, Chambers, Chilton, Clay, Coosa, Elmore and 5 more | 85 min |
| Dec 25, 7:08 PM CST | Mesoscale Discussion | SPC | Autauga, Baldwin, Butler, Chilton, Clarke, Clay and 14 more | 67 min |
| Dec 25, 9:23 PM CST | Tornado Watch | SPC | Baldwin, Barbour, Bullock, Chambers, Coffee, Covington and 12 more | 6 hr |
| Dec 25, 11:10 PM CST | Mesoscale Discussion | SPC | Barbour, Dale, Geneva, Henry, Houston, Lee and 1 more | 95 min |
| Dec 26, 2:55 AM CST | Mesoscale Discussion | SPC | Calhoun, Gadsden, Gulf, Liberty | 65 min |
Nearby
Mesoscale Discussions in Georgia, 2012Mesoscale Discussions in Alabama, 2012Mesoscale Discussions in Florida, 2012Every mesoscale discussion in 2012
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.