Alert archive / Georgia / Mesoscale Discussions in 2003
Mesoscale Discussion 314
The Storm Prediction Center issued this mesoscale discussion at Mar 20, 2003, 6:57 PM EST for 11 counties in Florida; 43 counties in Georgia; 9 counties in South Carolina. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 20, 2003, 6:57 PM EST (23:57 UTC)
- Expired
- Mar 20, 2003, 9:00 PM EST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 63 counties
Baker County, FL, Columbia County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Madison County, FL, Nassau County, FL, Suwannee County, FL, Taylor County, FL, Wakulla County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Ben Hill County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Bryan County, GA, Bulloch 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, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glynn County, GA, Grady County, GA, Irwin County, GA, Jeff Davis County, GA, Jenkins County, GA, Lanier County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, McIntosh County, GA, Montgomery County, GA, Pierce County, GA, Screven County, GA, Tattnall County, GA, Telfair County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Ware County, GA, Wayne County, GA, Wheeler County, GA, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Charleston County, SC, Colleton County, SC, Dorchester 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, 12.0 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.
- Mixed-layer CAPE
- 1354 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 703 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 242 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 9.3
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 19, 9:41 PM EST | Mesoscale Discussion | SPC | Escambia, Holmes, Jackson, Okaloosa, Santa Rosa, Walton and 1 more | 3 hr |
| Mar 19, 10:25 PM EST | Tornado Watch | SPC | Bay, Calhoun, Gulf, Holmes, Jackson, Okaloosa and 3 more | 6 hr |
| Mar 20, 12:52 AM EST | Mesoscale Discussion | SPC | Calhoun, Gadsden, Hamilton, Jackson, Jefferson, Lafayette and 5 more | 2 hr |
| Mar 20, 3:06 AM EST | Mesoscale Discussion | SPC | Calhoun, Gadsden, Jackson, Leon, Liberty | 54 min |
| Mar 20, 3:40 AM EST | Tornado Watch | SPC | Bay, Calhoun, Franklin, Gadsden, Gulf, Hamilton and 7 more | 5 hr |
| Mar 20, 6:12 AM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Gadsden, Gulf, Hamilton, Jefferson and 5 more | 2 hr |
| Mar 20, 2:35 PM EST | Tornado Watch | SPC | Columbia, Gadsden, Hamilton, Jefferson, Leon, Liberty and 1 more | 6 hr |
| Mar 20, 4:21 PM EST | Mesoscale Discussion | SPC | Baker, Hamilton, Jefferson, Madison, Nassau | 114 min |
| Mar 19, 7:04 PM EST | Mesoscale Discussion | SPC | Appling, Bacon, Brantley, Bryan, Bulloch, Camden and 15 more | 116 min |
| Mar 19, 7:15 PM EST | Tornado Watch | SPC | Appling, Bacon, Bryan, Bulloch, Candler, Chatham and 11 more | 4 hr |
| Mar 19, 8:58 PM EST | Mesoscale Discussion | SPC | Burke, Columbia, Glascock, Jefferson, Jenkins, Lincoln and 6 more | 3 hr |
| Mar 19, 11:16 PM EST | Mesoscale Discussion | SPC | Baldwin, Banks, Barrow, Bartow, Butts, Carroll and 50 more | 2 hr |
| Mar 20, 12:20 AM EST | Severe Thunderstorm Watch | SPC | Banks, Barrow, Butts, Clarke, Clayton, Cobb and 38 more | 4 hr |
| Mar 20, 8:40 AM EST | Tornado Watch | SPC | Appling, Atkinson, Bacon, Berrien, Brantley, Brooks and 20 more | 6 hr |
| Mar 20, 11:09 AM EST | Mesoscale Discussion | SPC | Atkinson, Berrien, Brantley, Brooks, Clinch, Colquitt and 6 more | 2 hr |
| Mar 20, 1:33 PM EST | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Berrien, Brantley, Brooks and 10 more | 117 min |
| Mar 20, 2:16 AM EST | Mesoscale Discussion | SPC | Georgetown, Horry, Marion, Williamsburg | 119 min |
| Mar 20, 5:48 AM EST | Mesoscale Discussion | SPC | Calhoun, Clarendon, Darlington, Dillon, Florence, Horry and 5 more | 117 min |
| Mar 20, 10:10 AM EST | Tornado Watch | SPC | Georgetown, Horry | 5 hr |
| Mar 20, 10:40 AM EST | Mesoscale Discussion | SPC | Horry | 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.