Alert archive / Georgia / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 359

May 11, 200326 counties in Alabama; 44 counties in Georgia

The Storm Prediction Center issued this severe thunderstorm watch at May 11, 2003, 1:15 PM CDT for 26 counties in Alabama; 44 counties in Georgia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 11, 2003, 1:15 PM CDT (18:15 UTC)
Expired: May 11, 2003, 7:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 70 counties

Autauga County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Chambers County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Coosa 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, Perry County, AL, Pike County, AL, Russell County, AL, Sumter County, AL, Tallapoosa County, AL, Washington County, AL, Wilcox County, AL, Baldwin County, GA, Bibb County, GA, Bleckley County, GA, Butts County, GA, Chattahoochee County, GA, Crawford County, GA, Dodge County, GA, Dooly County, GA, Glascock County, GA, Hancock County, GA, Harris County, GA, Houston County, GA, Jasper County, GA, Jefferson 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, Schley County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taliaferro County, GA, Taylor County, GA, Treutlen County, GA, Troup County, GA, Twiggs County, GA, Upson County, GA, Warren County, GA, Washington County, GA, Webster County, GA, Wilkinson County, GA

Warnings issued inside it

7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 11, 2:47 PM CDT	Severe Thunderstorm Warning	FFC	Taylor	28 min
May 11, 2:52 PM CDT	Severe Thunderstorm Warning	FFC	Washington	38 min
May 11, 3:12 PM CDT	Severe Thunderstorm Warning	FFC	Jefferson	48 min
May 11, 3:56 PM CDT	Severe Thunderstorm Warning	FFC	Washington	34 min
May 11, 4:08 PM CDT	Severe Thunderstorm Warning	FFC	Jefferson	22 min
May 11, 4:52 PM CDT	Severe Thunderstorm Warning	BMX	Russell	23 min
May 11, 5:02 PM CDT	Severe Thunderstorm Warning	FFC	Chattahoochee	28 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.3 hours before the alert went out and 109 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1001 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 659 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 314 m²/s²
0-3 km storm-relative helicity: 374 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 12.1

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.

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, 3:00 PM CDT	Mesoscale Discussion	SPC	Autauga, Barbour, Bullock, Butler, Choctaw, Clarke and 14 more	2 hr

Nearby

Severe Thunderstorm Watches in Georgia, 2003 Severe Thunderstorm Watches in Alabama, 2003 Every severe thunderstorm watch 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.