Alert archive / Georgia / Mesoscale Discussions in 2003
Mesoscale Discussion 950
The Storm Prediction Center issued this mesoscale discussion at May 11, 2003, 3:00 PM CDT for 20 counties in Alabama; 46 counties in Georgia; 22 counties in South Carolina. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 11, 2003, 3:00 PM CDT (20:00 UTC)
- Expired
- May 11, 2003, 5:00 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 88 counties
Autauga County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Crenshaw County, AL, Dallas County, AL, Elmore County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Russell County, AL, Washington County, AL, Wilcox County, AL, Baldwin County, GA, Bibb County, GA, Bleckley County, GA, Burke County, GA, Chattahoochee County, GA, Columbia County, GA, Crawford County, GA, Dooly County, GA, Emanuel County, GA, Glascock County, GA, Hancock County, GA, Harris County, GA, Houston County, GA, Jasper County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Laurens County, GA, Macon County, GA, Marion County, GA, McDuffie County, GA, Meriwether County, GA, Monroe County, GA, Muscogee County, GA, Peach County, GA, Pike County, GA, Pulaski County, GA, Putnam County, GA, Quitman County, GA, Richmond County, GA, Schley County, GA, Screven County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taliaferro County, GA, Taylor County, GA, Treutlen County, GA, Twiggs County, GA, Upson County, GA, Warren County, GA, Washington County, GA, Webster County, GA, Wilkinson County, GA, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Berkeley County, SC, Calhoun County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Edgefield County, SC, Florence County, SC, Georgetown County, SC, Hampton County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC, Williamsburg County, SC
The radar
The Atlanta radar (KFFC), 99 km from the middle of the area, began a volume at 20:02 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, 8.0 hours before the alert went out and 100 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.
- Mixed-layer CAPE
- 515 J/kg
- Mixed-layer CIN
- -104 J/kg
- Mixed-layer LCL
- 604 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 216 m²/s²
- 0-3 km storm-relative helicity
- 209 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
033 ACUS11 KWNS 112001 SWOMCD SPC MCD 112000 SCZ000-NCZ000-GAZ000-ALZ000-MSZ000-112200- MESOSCALE DISCUSSION 0950 NWS STORM PREDICTION CENTER NORMAN OK 0300 PM CDT SUN MAY 11 2003 AREAS AFFECTED...SRN/CENTRAL AL AND GA...SRN/ERN SC CONCERNING...SEVERE THUNDERSTORM WATCH 359... VALID 112000Z - 112200Z SCATTERED THUNDERSTORMS WILL CONTINUE TO INTENSIFY FROM SWRN AL ENEWD ITO CENTRAL GA ALONG AND AHEAD OF OUTFLOW BOUNDARY/CONVERGENCE TROUGH. SEVERE THUNDERSTORMS HAVE EXHIBITED MODERATELY STRONG ROTATION SUGGESTING THAT LARGE HAIL WILL REMAIN POSSIBLE. ADDITIONALLY...IF CONVECTIVE CLUSTER OF SWRN/CENTRAL AL CAN BECOME BETTER ORGANIZED...THEN THE DAMAGING WIND THREAT WOULD INCREASE. STORM MOTIONS WILL CONTINUE TO TAKE MOST OF THIS ACTIVITY ENEWD INTO PORTIONS OF FAR ECENTRAL GA...SRN AND ERN SOUTH CAROLINA. ENVIRONMENTAL CONDITIONS OVER THIS AREA REMAINS FAVORABLE FOR SEVERE THUNDERSTORMS. THUS A NEW WW WILL LIKELY BE NEEDED IN THIS AREA SHORTLY. ..CROSBIE.. 05/11/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...RAH...ILM...CHS...CAE...FFC...TAE...BMX...MOB... 31118847 32188838 32828542 34687932 33027915 32378247
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 11:20 PM CDT | Tornado Watch | SPC | Colbert, Franklin, Lauderdale | 6 hr |
| May 11, 1:46 AM CDT | Mesoscale Discussion | SPC | Colbert, Lauderdale | 89 min |
| May 11, 3:10 AM CDT | Mesoscale Discussion | SPC | Bibb, Blount, Cullman, DeKalb, Fayette, Greene and 17 more | 95 min |
| May 11, 3:20 AM CDT | Severe Thunderstorm Watch | SPC | Blount, Cullman, Fayette, Jackson, Jefferson, Lamar and 8 more | 5 hr |
| May 11, 5:22 AM CDT | Mesoscale Discussion | SPC | Blount, Cullman, Fayette, Jackson, Jefferson, Lamar and 8 more | 83 min |
| May 11, 12:20 PM CDT | Mesoscale Discussion | SPC | Baldwin, Barbour, Bullock, Butler, Clarke, Coffee and 18 more | 115 min |
| May 11, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | Autauga, Barbour, Bullock, Butler, Chambers, Chilton and 20 more | 6 hr |
Nearby
Mesoscale Discussions in Georgia, 2003Mesoscale Discussions in South Carolina, 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.