Alert archive / Georgia / Mesoscale Discussions in 2011
Mesoscale Discussion 179
The Storm Prediction Center issued this mesoscale discussion at Feb 28, 2011, 6:42 PM EST for 27 counties in Georgia; 12 counties in North Carolina; 14 counties in South Carolina. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- Feb 28, 2011, 6:42 PM EST (23:42 UTC)
- Expired
- Feb 28, 2011, 8:15 PM EST
- In force
- 93 min
- Issued by
- the Storm Prediction Center
All 53 counties
Baldwin County, GA, Bibb County, GA, Butts County, GA, Columbia County, GA, Crawford County, GA, Glascock County, GA, Greene County, GA, Hancock County, GA, Jasper County, GA, Jefferson County, GA, Jones County, GA, Lamar County, GA, Lincoln County, GA, McDuffie County, GA, Monroe County, GA, Morgan County, GA, Oglethorpe County, GA, Pike County, GA, Putnam County, GA, Richmond County, GA, Taliaferro County, GA, Twiggs County, GA, Upson County, GA, Warren County, GA, Washington County, GA, Wilkes County, GA, Wilkinson County, GA, Anson County, NC, Chatham County, NC, Harnett County, NC, Hoke County, NC, Johnston County, NC, Lee County, NC, Montgomery County, NC, Moore County, NC, Richmond County, NC, Stanly County, NC, Union County, NC, Wake County, NC, Abbeville County, SC, Aiken County, SC, Chester County, SC, Chesterfield County, SC, Edgefield County, SC, Fairfield County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Richland County, SC, Saluda County, SC
The radar
The Columbia radar (KCAE), 43 km from the middle of the area, began a volume at 23:46 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.7 hours before the alert went out and 266 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
- 948 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 425 m²/s²
- 0-3 km storm-relative helicity
- 499 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 |
|---|---|---|---|---|
| Feb 28, 1:29 PM EST | Tornado Watch | SPC | Banks, Barrow, Bartow, Carroll, Catoosa, Chattooga and 48 more | 7 hr |
| Feb 28, 4:36 PM EST | Mesoscale Discussion | SPC | Banks, Barrow, Bartow, Butts, Carroll, Chattahoochee and 51 more | 84 min |
| Feb 28, 5:04 PM EST | Severe Thunderstorm Watch | SPC | Baldwin, Bibb, Burke, Butts, Chattahoochee, Columbia and 33 more | 5 hr |
| Feb 28, 12:25 PM EST | Mesoscale Discussion | SPC | Graham, Swain | 95 min |
Nearby
Mesoscale Discussions in Georgia, 2011Mesoscale Discussions in South Carolina, 2011Mesoscale Discussions in North Carolina, 2011Every mesoscale discussion in 2011
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.