Alert archive / Georgia / Mesoscale Discussions in 2003

Mesoscale Discussion 1046

May 17, 200326 counties in Alabama; 38 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at May 17, 2003, 10:45 AM CDT for 26 counties in Alabama; 38 counties in Georgia. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
May 17, 2003, 10:45 AM CDT (15:45 UTC)
Expired
May 17, 2003, 12:15 PM CDT
In force
90 min
Issued by
the Storm Prediction Center
All 64 counties

Autauga County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Calhoun County, AL, Chambers County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coffee County, AL, Coosa County, AL, Crenshaw County, AL, Dale County, AL, Dallas County, AL, Elmore County, AL, Henry County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Montgomery County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Talladega County, AL, Tallapoosa County, AL, Wilcox County, AL, Bibb County, GA, Butts County, GA, Calhoun County, GA, Carroll County, GA, Chattahoochee County, GA, Clay County, GA, Clayton County, GA, Coweta County, GA, Crawford County, GA, Dooly County, GA, Douglas County, GA, Fayette County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Houston County, GA, Lamar County, GA, Lee County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Monroe County, GA, Muscogee County, GA, Peach County, GA, Pike County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Terrell County, GA, Troup County, GA, Upson County, GA, Webster County, GA

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, 3.8 hours before the alert went out and 138 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 2003-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1351 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 2003-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.193958Sfc1 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
1351 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
593 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.5

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
May 16, 11:41 PM CDTMesoscale DiscussionSPCColbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 6 more94 min
May 17, 12:55 AM CDTSevere Thunderstorm WatchSPCBlount, Colbert, Cullman, Franklin, Lauderdale, Lawrence and 6 more4 hr
May 17, 2:37 AM CDTMesoscale DiscussionSPCBlount, Cullman, Franklin, Lamar, Lawrence, Limestone and 5 more53 min
May 17, 7:48 AM CDTMesoscale DiscussionSPCBibb, Chilton, Choctaw, Clarke, Dallas, Fayette and 14 more57 min
May 17, 9:20 AM CDTTornado WatchSPCBibb, Blount, Cherokee, Choctaw, Colbert, Cullman and 25 more6 hr
May 17, 1:50 PM CDTMesoscale DiscussionSPCAutauga, Barbour, Bibb, Bullock, Butler, Calhoun and 33 more115 min
May 17, 2:25 PM CDTTornado WatchSPCAutauga, Bibb, Blount, Butler, Calhoun, Cherokee and 28 more8 hr
May 17, 1:00 PM CDTTornado WatchSPCBaldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 85 more6 hr
May 17, 5:13 PM CDTMesoscale DiscussionSPCBanks, Barrow, Bulloch, Burke, Candler, Cherokee and 39 more2 hr

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.