Alert archive / Georgia / Mesoscale Discussions in 2003
Mesoscale Discussion 311
The Storm Prediction Center issued this mesoscale discussion at Mar 20, 2003, 4:21 PM EST for 5 counties in Florida; 42 counties in Georgia; 7 counties in South Carolina. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Mar 20, 2003, 4:21 PM EST (21:21 UTC)
- Expired
- Mar 20, 2003, 6:15 PM EST
- In force
- 114 min
- Issued by
- the Storm Prediction Center
All 54 counties
Baker County, FL, Hamilton County, FL, Jefferson County, FL, Madison County, FL, Nassau 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, Irwin County, GA, Jeff Davis County, GA, Lanier County, GA, Laurens 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, Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC
The radar
The Charleston,SC radar (KCLX), 114 km from the middle of the area, began a volume at 21:24 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
Jacksonville, FL (KJAX), launched 12:00Z, 9.4 hours before the alert went out and 151 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, 6:57 PM EST | Mesoscale Discussion | SPC | Baker, Columbia, Hamilton, Jefferson, Lafayette, Leon and 5 more | 2 hr |
| 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 South Carolina, 2003Mesoscale Discussions in Florida, 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.