Alert archive / Georgia / Mesoscale Discussions in 2005

Mesoscale Discussion 450

March 31, 200542 counties in Georgia; 6 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2005, 12:44 AM EST for 42 counties in Georgia; 6 counties in Tennessee. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Mar 31, 2005, 12:44 AM EST (05:44 UTC)
Expired
Mar 31, 2005, 2:15 AM EST
In force
91 min
Issued by
the Storm Prediction Center
All 48 counties

Bartow County, GA, Carroll County, GA, Catoosa County, GA, Chattahoochee County, GA, Chattooga County, GA, Cherokee County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Gwinnett County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Lamar County, GA, Lumpkin County, GA, Marion County, GA, Meriwether County, GA, Murray County, GA, Muscogee County, GA, Paulding County, GA, Pickens County, GA, Pike County, GA, Polk County, GA, Schley County, GA, Spalding County, GA, Talbot County, GA, Taylor County, GA, Troup County, GA, Upson County, GA, Walker County, GA, Whitfield County, GA, Bradley County, TN, Hamilton County, TN, McMinn County, TN, Meigs County, TN, Polk County, TN, Rhea County, TN

The radar

The Atlanta radar (KFFC), 51 km from the middle of the area, began a volume at 05:47 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, 5.7 hours before the alert went out and 53 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 2005-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2005-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2888 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
66 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 31, 1:53 AM ESTMesoscale DiscussionSPCChattahoochee, Harris, Marion, Muscogee, Talbot97 min
Mar 31, 2:15 AM ESTSevere Thunderstorm WatchSPCCarroll, Clay, Early, Haralson, Harris, Heard and 6 more7 hr
Mar 31, 3:08 AM ESTMesoscale DiscussionSPCCatoosa, Chattooga, Dade, Walker, Whitfield97 min
Mar 31, 6:34 AM ESTMesoscale DiscussionSPCCarroll, Haralson, Heard, Troup116 min
Mar 31, 7:53 AM ESTMesoscale DiscussionSPCBaldwin, Bibb, Bleckley, Burke, Butts, Carroll and 60 more67 min
Mar 31, 8:30 AM ESTSevere Thunderstorm WatchSPCBaldwin, Bibb, Bleckley, Calhoun, Chattahoochee, Clay and 42 more8 hr
Mar 31, 11:32 AM ESTMesoscale DiscussionSPCBaldwin, Bibb, Bleckley, Chattahoochee, Clay, Crawford and 26 more88 min
Mar 31, 3:15 PM ESTMesoscale DiscussionSPCAtkinson, Bacon, Baker, Berrien, Brantley, Brooks and 18 more2 hr
Mar 30, 8:56 PM ESTMesoscale DiscussionSPCBenton, Carroll, Chester, Crockett, Decatur, Dickson and 26 more94 min
Mar 30, 10:50 PM ESTSevere Thunderstorm WatchSPCBedford, Bledsoe, Coffee, Franklin, Giles, Grundy and 10 more6 hr

Nearby

Mesoscale Discussions in Georgia, 2005Mesoscale Discussions in Tennessee, 2005Every mesoscale discussion in 2005

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.