Alert archive / Georgia / Mesoscale Discussions in 2003

Mesoscale Discussion 122

February 22, 200310 counties in Alabama; 50 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Feb 22, 2003, 2:47 AM CST for 10 counties in Alabama; 50 counties in Georgia. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Feb 22, 2003, 2:47 AM CST (08:47 UTC)
Expired
Feb 22, 2003, 5:45 AM CST
In force
3 hr
Issued by
the Storm Prediction Center
All 60 counties

Calhoun County, AL, Cherokee County, AL, Cleburne County, AL, DeKalb County, AL, Etowah County, AL, Jackson County, AL, Madison County, AL, Marshall County, AL, Randolph County, AL, St. Clair 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, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Gwinnett County, GA, Habersham County, GA, Hall County, GA, Haralson County, GA, Heard County, GA, Henry County, GA, Jackson County, GA, Jasper County, GA, Lumpkin County, GA, Madison County, GA, Morgan County, GA, Murray County, GA, Newton County, GA, Oconee County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Rabun County, GA, Rockdale County, GA, Spalding County, GA, Stephens County, GA, Towns County, GA, Union County, GA, Walker County, GA, Walton County, GA, White County, GA, Whitfield County, GA

The radar

The Atlanta radar (KFFC), 113 km from the middle of the area, began a volume at 08:47 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, 8.8 hours before the alert went out and 115 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 2003-02-22Temperature 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 2003-02-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
565 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
104 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
Feb 21, 7:26 PM CSTMesoscale DiscussionSPCBaldwin, Clarke, Mobile, Washington2 hr
Feb 21, 8:15 PM CSTTornado WatchSPCBaldwin, Butler, Clarke, Conecuh, Covington, Crenshaw and 4 more6 hr
Feb 21, 9:03 PM CSTMesoscale DiscussionSPCAutauga, Bibb, Blount, Chilton, Choctaw, Coosa and 22 more3 hr
Feb 21, 9:30 PM CSTSevere Thunderstorm WatchSPCAutauga, Bibb, Calhoun, Chilton, Choctaw, Clay and 20 more7 hr
Feb 21, 10:22 PM CSTMesoscale DiscussionSPCBaldwin, Butler, Clarke, Conecuh, Covington, Crenshaw and 4 more113 min
Feb 21, 10:40 PM CSTMesoscale DiscussionSPCAutauga, Bibb, Calhoun, Chilton, Choctaw, Clay and 20 more2 hr
Feb 21, 11:14 PM CSTMesoscale DiscussionSPCBlount, Calhoun, Cherokee, Cleburne, Cullman, DeKalb and 16 more4 hr
Feb 21, 11:40 PM CSTTornado WatchSPCBarbour, Bullock, Coffee, Dale, Geneva, Henry and 5 more6 hr
Feb 22, 12:35 AM CSTTornado WatchSPCAutauga, Baldwin, Bibb, Bullock, Butler, Calhoun and 37 more5 hr
Feb 22, 3:35 AM CSTTornado WatchSPCBlount, Calhoun, Chambers, Cherokee, Chilton, Clay and 12 more2 hr
Feb 22, 3:51 AM CSTMesoscale DiscussionSPCAutauga, Baldwin, Barbour, Bibb, Bullock, Butler and 43 more114 min
Feb 22, 5:19 AM CSTMesoscale DiscussionSPCBarbour, Henry, Houston, Russell56 min
Feb 22, 5:50 AM CSTTornado WatchSPCHenry, Houston5 hr
Feb 22, 9:14 AM CSTMesoscale DiscussionSPCDeKalb, Jackson, Marshall2 hr
Feb 22, 10:35 AM CSTTornado WatchSPCDeKalb, Jackson5 hr
Feb 21, 6:18 PM CSTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 20 more3 hr
Feb 22, 9:59 AM CSTMesoscale DiscussionSPCAppling, Brantley, Bryan, Bulloch, Camden, Charlton and 12 more61 min
Feb 22, 10:55 AM CSTTornado WatchSPCBrantley, Bryan, Bulloch, Camden, Charlton, Chatham and 9 more5 hr
Feb 22, 12:33 PM CSTMesoscale DiscussionSPCCatoosa, Colquitt, Dade, Lee, Murray, Schley and 3 more117 min
Feb 22, 12:49 PM CSTMesoscale DiscussionSPCCamden, Chatham, Glynn, McIntosh116 min
Feb 22, 2:31 PM CSTMesoscale DiscussionSPCCatoosa, Murray, Walker, Whitfield119 min

Nearby

Mesoscale Discussions in Georgia, 2003Mesoscale Discussions in Alabama, 2003Every mesoscale discussion in 2003

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.