Alert archive / South Carolina / Mesoscale Discussions in 2009
Mesoscale Discussion 2189
The Storm Prediction Center issued this mesoscale discussion at Dec 2, 2009, 5:44 PM EST for 17 counties in Georgia; 16 counties in North Carolina; 31 counties in South Carolina. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Dec 2, 2009, 5:44 PM EST (22:44 UTC)
- Expired
- Dec 2, 2009, 7:15 PM EST
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 64 counties
Bryan County, GA, Bulloch County, GA, Burke County, GA, Candler County, GA, Chatham County, GA, Columbia County, GA, Effingham County, GA, Evans County, GA, Jenkins County, GA, Liberty County, GA, Lincoln County, GA, Long County, GA, McDuffie County, GA, McIntosh County, GA, Richmond County, GA, Screven County, GA, Tattnall County, GA, Bladen County, NC, Brunswick County, NC, Columbus County, NC, Craven County, NC, Cumberland County, NC, Duplin County, NC, Hoke County, NC, Jones County, NC, Lenoir County, NC, New Hanover County, NC, Onslow County, NC, Pender County, NC, Robeson County, NC, Sampson County, NC, Scotland County, NC, Wayne County, NC, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Chesterfield County, SC, Clarendon County, SC, Colleton County, SC, Darlington County, SC, Dillon County, SC, Dorchester County, SC, Edgefield County, SC, Florence County, SC, Georgetown County, SC, Hampton County, SC, Horry County, SC, Jasper County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, Marion County, SC, Marlboro County, SC, McCormick County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC, Williamsburg County, SC
The radar
The Columbia radar (KCAE), 91 km from the middle of the area, began a volume at 22:46 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 10.7 hours before the alert went out and 66 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 438 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 368 m²/s²
- 0-3 km storm-relative helicity
- 626 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Dec 2, 4:11 AM EST | Tornado Watch | SPC | Baker, Calhoun, Clay, Decatur, Dougherty, Early and 8 more | 6 hr |
| Dec 2, 6:02 AM EST | Mesoscale Discussion | SPC | Baker, Calhoun, Clay, Decatur, Dougherty, Early and 8 more | 58 min |
| Dec 2, 9:52 AM EST | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 37 more | 83 min |
| Dec 2, 10:32 AM EST | Tornado Watch | SPC | Appling, Atkinson, Bacon, Baker, Baldwin, Ben Hill and 59 more | 6 hr |
| Dec 2, 12:48 PM EST | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 37 more | 117 min |
| Dec 2, 1:31 PM EST | Mesoscale Discussion | SPC | Baldwin, Bleckley, Bryan, Bulloch, Burke, Candler and 23 more | 89 min |
| Dec 2, 2:08 PM EST | Tornado Watch | SPC | Bryan, Bulloch, Burke, Candler, Chatham, Columbia and 11 more | 8 hr |
| Dec 2, 2:46 PM EST | Tornado Watch | SPC | Appling, Bacon, Brantley, Camden, Charlton, Clinch and 5 more | 7 hr |
| Dec 2, 6:39 PM EST | Mesoscale Discussion | SPC | Brantley, Camden, Charlton, Glynn, Pierce, Wayne | 96 min |
| Dec 2, 1:08 PM EST | Mesoscale Discussion | SPC | Brunswick, New Hanover | 2 hr |
| Dec 2, 6:59 PM EST | Tornado Watch | SPC | Beaufort, Bladen, Brunswick, Carteret, Columbus, Craven and 26 more | 8 hr |
Nearby
Mesoscale Discussions in South Carolina, 2009Mesoscale Discussions in Georgia, 2009Mesoscale Discussions in North Carolina, 2009Every mesoscale discussion in 2009
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.