Alert archive / Georgia / Mesoscale Discussions in 2008

Mesoscale Discussion 413

March 15, 20085 states

The Storm Prediction Center issued this mesoscale discussion at Mar 15, 2008, 2:57 AM CDT for 5 states. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
Mar 15, 2008, 2:57 AM CDT (07:57 UTC)
Expired
Mar 15, 2008, 4:30 AM CDT
In force
93 min
Issued by
the Storm Prediction Center
All 68 counties

Cherokee County, AL, Cleburne County, AL, Randolph County, AL, Banks County, GA, Barrow County, GA, Bartow County, GA, Butts County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Dade County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Elbert County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Franklin County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Greene County, GA, Gwinnett County, GA, Habersham County, GA, Hall County, GA, Haralson County, GA, Hart County, GA, Heard County, GA, Henry County, GA, Jackson County, GA, Jasper County, GA, Lincoln County, GA, Lumpkin County, GA, Madison County, GA, McDuffie County, GA, Morgan County, GA, Murray County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Putnam County, GA, Rabun County, GA, Rockdale County, GA, Spalding County, GA, Stephens County, GA, Taliaferro County, GA, Towns County, GA, Union County, GA, Walker County, GA, Walton County, GA, Warren County, GA, White County, GA, Whitfield County, GA, Wilkes County, GA, Cherokee County, NC, Clay County, NC, Oconee County, SC, Polk County, TN

The radar

The Atlanta radar (KFFC), 84 km from the middle of the area, began a volume at 07:59 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 00:00Z, 8.0 hours before the alert went out and 82 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 00:00Z on 2008-03-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 733 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 00:00Z on 2008-03-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 square meters per square second.1939587897117Sfc1 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
733 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
984 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
212 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.6

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
Mar 14, 7:11 PM CDTMesoscale DiscussionSPCAutauga, Barbour, Blount, Bullock, Calhoun, Chambers and 18 more64 min
Mar 15, 12:39 AM CDTMesoscale DiscussionSPCBlount, Calhoun, Cherokee, Clay, Cleburne, Colbert and 22 more66 min
Mar 15, 12:56 AM CDTSevere Thunderstorm WatchSPCAutauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 38 more6 hr
Mar 15, 4:30 AM CDTMesoscale DiscussionSPCColbert, Franklin, Marion90 min
Mar 15, 6:58 AM CDTMesoscale DiscussionSPCBlount, Cherokee, Colbert, Cullman, DeKalb, Etowah and 11 more62 min
Mar 15, 7:02 AM CDTSevere Thunderstorm WatchSPCBlount, Calhoun, Cherokee, Cleburne, Colbert, Cullman and 16 more4 hr
Mar 15, 9:38 AM CDTMesoscale DiscussionSPCCalhoun, Cherokee, Cleburne, DeKalb, Etowah, Randolph and 1 more67 min
Mar 15, 10:02 AM CDTTornado WatchSPCAutauga, Bullock, Calhoun, Chambers, Cherokee, Chilton and 15 more8 hr
Mar 15, 10:23 AM CDTMesoscale DiscussionSPCColbert67 min
Mar 15, 12:22 PM CDTMesoscale DiscussionSPCBullock, Calhoun, Chambers, Clay, Cleburne, Coosa and 8 more83 min
Mar 15, 1:21 PM CDTMesoscale DiscussionSPCCalhoun, Chambers, Clay, Cleburne, Randolph84 min
Mar 15, 2:08 PM CDTMesoscale DiscussionSPCCleburne67 min
Mar 15, 2:39 PM CDTMesoscale DiscussionSPCBibb, Blount, Cullman, DeKalb, Fayette, Franklin and 12 more2 hr
Mar 14, 10:03 PM CDTMesoscale DiscussionSPCBaldwin, Butts, Clayton, Cobb, DeKalb, Douglas and 26 more57 min
Mar 15, 3:28 AM CDTSevere Thunderstorm WatchSPCBanks, Barrow, Bartow, Butts, Carroll, Chattooga and 42 more3 hr
Mar 15, 6:18 AM CDTMesoscale DiscussionSPCBurke, Columbia, Glascock, Hancock, Jefferson, Jenkins and 7 more117 min
Mar 15, 3:36 PM CDTTornado Watch PDSSPCBaldwin, Barrow, Bibb, Bleckley, Bryan, Bulloch and 73 more8 hr
Mar 15, 4:56 PM CDTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Ben Hill, Berrien, Bleckley and 40 more64 min
Mar 15, 5:17 PM CDTMesoscale DiscussionSPCBanks, Bartow, Cherokee, Cobb, Dawson, Floyd and 14 more28 min
Mar 15, 6:41 PM CDTMesoscale DiscussionSPCBaldwin, Bibb, Bleckley, Bulloch, Burke, Butts and 52 more64 min
Mar 15, 10:30 AM CDTMesoscale DiscussionSPCAnson, Bladen, Brunswick, Columbus, New Hanover, Pender and 4 more60 min
Mar 15, 5:35 PM CDTMesoscale DiscussionSPCBeaufort, Bertie, Camden, Carteret, Chowan, Craven and 17 more25 min
Mar 15, 5:59 PM CDTTornado WatchSPCBeaufort, Bertie, Camden, Carteret, Chowan, Craven and 19 more4 hr
Mar 14, 11:55 PM CDTSevere Thunderstorm WatchSPCCarroll, Chester, Crockett, Decatur, Dyer, Fayette and 14 more7 hr
Mar 15, 2:12 AM CDTMesoscale DiscussionSPCChester, Crockett, Dyer, Fayette, Gibson, Hardeman and 6 more93 min

Nearby

Mesoscale Discussions in Georgia, 2008Mesoscale Discussions in Alabama, 2008Mesoscale Discussions in North Carolina, 2008Every mesoscale discussion in 2008

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.