Alert archive / Georgia / Mesoscale Discussions in 2006

Mesoscale Discussion 23

January 2, 200612 counties in Alabama; 26 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Jan 2, 2006, 3:20 PM CST for 12 counties in Alabama; 26 counties in Georgia. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued
Jan 2, 2006, 3:20 PM CST (21:20 UTC)
Expired
Jan 2, 2006, 4:45 PM CST
In force
85 min
Issued by
the Storm Prediction Center
All 38 counties

Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Clay County, AL, Cleburne County, AL, Etowah County, AL, Lee County, AL, Macon County, AL, Randolph County, AL, Russell County, AL, Talladega County, AL, Tallapoosa County, AL, Bartow County, GA, Carroll County, GA, Chattooga County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, DeKalb County, GA, Douglas County, GA, Fayette County, GA, Floyd County, GA, Fulton County, GA, Gordon County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Lamar County, GA, Meriwether County, GA, Muscogee County, GA, Paulding County, GA, Pike County, GA, Polk County, GA, Rockdale County, GA, Spalding County, GA, Talbot County, GA, Troup County, GA

The radar

The Atlanta radar (KFFC), 60 km from the middle of the area, began a volume at 21:23 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.3 hours before the alert went out and 66 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.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2006-01-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 96 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2006-01-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
96 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
590 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
148 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 1, 8:26 PM CSTMesoscale DiscussionSPCBarbour, Butler, Coffee, Conecuh, Covington, Crenshaw and 7 more2 hr
Jan 2, 3:01 AM CSTMesoscale DiscussionSPCColbert, Lauderdale59 min
Jan 2, 6:45 AM CSTMesoscale DiscussionSPCCoffee, Covington, Dale, Geneva, Houston30 min
Jan 2, 7:10 AM CSTTornado WatchSPCBarbour, Butler, Coffee, Conecuh, Covington, Crenshaw and 6 more5 hr
Jan 2, 9:47 AM CSTMesoscale DiscussionSPCAutauga, Bibb, Blount, Bullock, Calhoun, Chambers and 23 more88 min
Jan 2, 11:11 AM CSTMesoscale DiscussionSPCColbert, DeKalb, Franklin, Jackson, Lauderdale, Lawrence and 3 more94 min
Jan 2, 10:43 AM CSTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Brantley, Camden, Charlton and 17 more92 min
Jan 2, 12:23 PM CSTTornado WatchSPCAppling, Atkinson, Bacon, Berrien, Brantley, Brooks and 20 more7 hr
Jan 2, 3:47 PM CSTTornado WatchSPCBanks, Barrow, Bartow, Bibb, Bleckley, Butts and 53 more5 hr
Jan 2, 5:16 PM CSTMesoscale DiscussionSPCBurke, Columbia, Emanuel, Glascock, Hancock, Jefferson and 11 more89 min
Jan 2, 5:58 PM CSTTornado WatchSPCBaldwin, Bulloch, Burke, Candler, Columbia, Emanuel and 17 more5 hr

Nearby

Mesoscale Discussions in Georgia, 2006Mesoscale Discussions in Alabama, 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.