Alert archive / Georgia / Mesoscale Discussions in 2003
Mesoscale Discussion 316
The Storm Prediction Center issued this mesoscale discussion at Mar 21, 2003, 2:16 AM EST for 4 states. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- Mar 21, 2003, 2:16 AM EST (07:16 UTC)
- Expired
- Mar 21, 2003, 3:15 AM EST
- In force
- 59 min
- Issued by
- the Storm Prediction Center
All 58 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Clay County, FL, Columbia County, FL, Dixie County, FL, Duval County, FL, Gilchrist County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Madison County, FL, Nassau County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Appling County, GA, Bacon County, GA, Brantley County, GA, Bryan County, GA, Camden County, GA, Charlton County, GA, Chatham County, GA, Clinch County, GA, Echols County, GA, Effingham County, GA, Glynn County, GA, Lanier County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, McIntosh County, GA, Pierce County, GA, Ware County, GA, Wayne County, GA, Bladen County, NC, Brunswick County, NC, Columbus County, NC, Duplin County, NC, Jones County, NC, Lenoir County, NC, New Hanover County, NC, Onslow County, NC, Pender County, NC, Sampson County, NC, Wayne County, NC, Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC, Florence County, SC, Georgetown County, SC, Hampton County, SC, Horry County, SC, Jasper County, SC, Marion County, SC, Williamsburg County, SC
The radar
The Charleston,SC radar (KCLX), 86 km from the middle of the area, began a volume at 07:20 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
Charleston AFB, SC (KCHS), launched 00:00Z, 7.3 hours before the alert went out and 141 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
- 105 J/kg
- Mixed-layer CIN
- -262 J/kg
- Mixed-layer LCL
- 1149 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 20, 9:00 PM EST | Severe Thunderstorm Watch | SPC | Columbia, Franklin, Gadsden, Gulf, Hamilton, Jefferson and 7 more | 6 hr |
| Mar 21, 10:51 AM EST | Mesoscale Discussion | SPC | Manatee, Orange, Osceola, Polk, Seminole | 114 min |
| Mar 20, 8:12 PM EST | Mesoscale Discussion | SPC | Beaufort, Bladen, Brunswick, Carteret, Columbus, Craven and 11 more | 3 hr |
| Mar 21, 11:20 AM EST | Mesoscale Discussion | SPC | Bertie, Gates, Greene, Hertford, Lenoir, Martin and 1 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; radar from the NEXRAD Level II archive.