Alert archive / Georgia / Mesoscale Discussions in 2008

Mesoscale Discussion 425

March 15, 200820 counties in Georgia; 8 counties in South Carolina

The Storm Prediction Center issued this mesoscale discussion at Mar 15, 2008, 6:17 PM EDT for 20 counties in Georgia; 8 counties in South Carolina. It was in force for 28 min.

The area

The outline as issued.

The facts

Issued
Mar 15, 2008, 6:17 PM EDT (22:17 UTC)
Expired
Mar 15, 2008, 6:45 PM EDT
In force
28 min
Issued by
the Storm Prediction Center
All 28 counties

Banks County, GA, Bartow County, GA, Cherokee County, GA, Cobb County, GA, Dawson County, GA, Floyd County, GA, Forsyth County, GA, Franklin County, GA, Gordon County, GA, Habersham County, GA, Hall County, GA, Haralson County, GA, Hart County, GA, Lumpkin County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Rabun County, GA, Stephens County, GA, White County, GA, Anderson County, SC, Cherokee County, SC, Greenville County, SC, Oconee County, SC, Pickens County, SC, Spartanburg County, SC, Union County, SC, York County, SC

The radar

The Greer radar (KGSP), 108 km from the middle of the area, began a volume at 22:19 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, 10.3 hours before the alert went out and 168 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 2008-03-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 33 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 2008-03-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 196 square meters per square second.1939587897Sfc1 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
33 J/kg
Mixed-layer CIN
-342 J/kg
Mixed-layer LCL
1103 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
196 m²/s²
0-3 km storm-relative helicity
459 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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, 8:11 PM EDTMesoscale DiscussionSPCBartow, Butts, Carroll, Catoosa, Chattahoochee, Chattooga and 46 more64 min
Mar 14, 11:03 PM EDTMesoscale DiscussionSPCBaldwin, Butts, Clayton, Cobb, DeKalb, Douglas and 26 more57 min
Mar 15, 1:39 AM EDTMesoscale DiscussionSPCBartow, Carroll, Catoosa, Chattooga, Dade, Floyd and 7 more66 min
Mar 15, 3:57 AM EDTMesoscale DiscussionSPCBanks, Barrow, Bartow, Butts, Carroll, Catoosa and 55 more93 min
Mar 15, 4:28 AM EDTSevere Thunderstorm WatchSPCBanks, Barrow, Bartow, Butts, Carroll, Chattooga and 42 more3 hr
Mar 15, 7:18 AM EDTMesoscale DiscussionSPCBurke, Columbia, Glascock, Hancock, Jefferson, Jenkins and 7 more117 min
Mar 15, 10:38 AM EDTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bartow, Butts, Carroll and 43 more67 min
Mar 15, 11:02 AM EDTTornado WatchSPCBaldwin, Banks, Barrow, Bartow, Bibb, Burke and 73 more8 hr
Mar 15, 1:22 PM EDTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bartow, Bibb, Burke and 67 more83 min
Mar 15, 2:21 PM EDTMesoscale DiscussionSPCBaldwin, Banks, Barrow, Bartow, Bibb, Burke and 57 more84 min
Mar 15, 3:08 PM EDTMesoscale DiscussionSPCBarrow, Carroll, Clarke, Clayton, Cobb, DeKalb and 11 more67 min
Mar 15, 3:39 PM EDTMesoscale DiscussionSPCCatoosa, Chattooga, Dade, Gordon, Murray, Walker and 1 more2 hr
Mar 15, 4:36 PM EDTTornado Watch PDSSPCBaldwin, Barrow, Bibb, Bleckley, Bryan, Bulloch and 73 more8 hr
Mar 15, 5:56 PM EDTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Ben Hill, Berrien, Bleckley and 40 more64 min
Mar 15, 7:41 PM EDTMesoscale DiscussionSPCBaldwin, Bibb, Bleckley, Bulloch, Burke, Butts and 52 more64 min
Mar 15, 11:30 AM EDTMesoscale DiscussionSPCBerkeley, Charleston, Chesterfield, Clarendon, Darlington, Dillon and 7 more60 min

Nearby

Mesoscale Discussions in Georgia, 2008Mesoscale Discussions in South 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.