Alert archive / Georgia / Mesoscale Discussions in 2003
Mesoscale Discussion 235
The Storm Prediction Center issued this mesoscale discussion at Mar 13, 2003, 9:39 AM EST for 30 counties in Florida; 74 counties in Georgia; 4 counties in South Carolina. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 13, 2003, 9:39 AM EST (14:39 UTC)
- Expired
- Mar 13, 2003, 11:45 AM EST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 108 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Citrus County, FL, Clay County, FL, Columbia County, FL, Dixie County, FL, Duval County, FL, Flagler County, FL, Gadsden County, FL, Gilchrist County, FL, Hamilton County, FL, Hernando County, FL, Jefferson County, FL, Lafayette County, FL, Lake County, FL, Leon County, FL, Levy County, FL, Madison County, FL, Marion County, FL, Nassau County, FL, Pasco County, FL, Putnam County, FL, Saint Johns County, FL, Sumter County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Volusia County, FL, Wakulla County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Baldwin County, GA, Ben Hill County, GA, Berrien County, GA, Bibb County, GA, Bleckley County, GA, Brantley County, GA, Brooks County, GA, Bryan County, GA, Bulloch County, GA, Burke County, GA, Calhoun County, GA, Camden County, GA, Candler County, GA, Charlton County, GA, Chatham County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glynn County, GA, Grady County, GA, Houston County, GA, Irwin County, GA, Jeff Davis County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Lanier County, GA, Laurens County, GA, Lee County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, Macon County, GA, McIntosh County, GA, Miller County, GA, Mitchell County, GA, Montgomery County, GA, Peach County, GA, Pierce County, GA, Pulaski County, GA, Schley County, GA, Screven County, GA, Sumter County, GA, Tattnall County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Turner County, GA, Twiggs County, GA, Ware County, GA, Washington County, GA, Wayne County, GA, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Wilkinson County, GA, Worth County, GA, Allendale County, SC, Beaufort County, SC, Hampton County, SC, Jasper County, SC
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 2.7 hours before the alert went out and 130 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
- 407 J/kg
- Mixed-layer CIN
- -146 J/kg
- Mixed-layer LCL
- 1235 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 13, 2:58 AM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Escambia, Gadsden, Gulf, Holmes and 6 more | 3 hr |
| Mar 13, 9:55 AM EST | Tornado Watch | SPC | Alachua, Baker, Bradford, Clay, Columbia, Dixie and 10 more | 6 hr |
| Mar 13, 10:39 AM EST | Mesoscale Discussion | SPC | Escambia, Okaloosa, Santa Rosa | 2 hr |
| Mar 13, 3:15 PM EST | Mesoscale Discussion | SPC | Escambia, Holmes, Okaloosa, Santa Rosa, Walton | 2 hr |
| Mar 13, 4:10 PM EST | Severe Thunderstorm Watch | SPC | Calhoun, Escambia, Gadsden, Holmes, Jackson, Okaloosa and 3 more | 5 hr |
| Mar 13, 6:33 PM EST | Mesoscale Discussion | SPC | Escambia | 87 min |
| Mar 13, 6:55 PM EST | Severe Thunderstorm Watch | SPC | Bay, Calhoun, Gadsden, Gulf, Holmes, Jackson and 7 more | 5 hr |
| Mar 13, 11:10 AM EST | Severe Thunderstorm Watch | SPC | Bartow, Floyd, Haralson, Polk | 6 hr |
| Mar 13, 1:55 PM EST | Mesoscale Discussion | SPC | Fannin, Gilmer, Habersham, Murray, Rabun, Stephens and 4 more | 2 hr |
Nearby
Mesoscale Discussions in Georgia, 2003Mesoscale Discussions in Florida, 2003Mesoscale Discussions in South Carolina, 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.