Alert archive / Georgia / Mesoscale Discussions in 2011
Mesoscale Discussion 295
The Storm Prediction Center issued this mesoscale discussion at Mar 27, 2011, 2:49 PM CDT for 7 counties in Alabama; 16 counties in Florida; 50 counties in Georgia. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- Mar 27, 2011, 2:49 PM CDT (19:49 UTC)
- Expired
- Mar 27, 2011, 3:45 PM CDT
- In force
- 56 min
- Issued by
- the Storm Prediction Center
All 73 counties
Baldwin County, AL, Coffee County, AL, Covington County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Gadsden County, FL, Hamilton County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Okaloosa County, FL, Santa Rosa County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Bryan County, GA, Calhoun County, GA, Charlton County, GA, Chatham County, GA, Clay County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Crisp County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Echols County, GA, Evans County, GA, Glynn County, GA, Grady County, GA, Irwin County, GA, Jeff Davis County, GA, Lanier County, GA, Lee County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, McIntosh County, GA, Miller County, GA, Mitchell County, GA, Montgomery County, GA, Pierce County, GA, Seminole County, GA, Tattnall County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Turner County, GA, Ware County, GA, Wayne County, GA, Wheeler County, GA, Wilcox County, GA, Worth County, GA
The radar
The Tallahassee radar (KTLH), 83 km from the middle of the area, began a volume at 19:52 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
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 7.8 hours before the alert went out and 82 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
- 1068 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 620 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 6.0
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 |
|---|---|---|---|---|
| Mar 26, 7:47 PM CDT | Tornado Watch | SPC | Bibb, Blount, Calhoun, Chambers, Cherokee, Chilton and 17 more | 7 hr |
| Mar 26, 11:21 PM CDT | Mesoscale Discussion | SPC | Bibb, Blount, Calhoun, Chambers, Cherokee, Chilton and 17 more | 54 min |
| Mar 27, 7:33 AM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Chambers, Chilton, Clay, Coosa and 16 more | 117 min |
| Mar 27, 8:55 AM CDT | Severe Thunderstorm Watch | SPC | Autauga, Barbour, Bullock, Butler, Chambers, Chilton and 17 more | 7 hr |
| Mar 27, 10:51 AM CDT | Mesoscale Discussion | SPC | Barbour, Coffee, Covington, Crenshaw, Dale, Geneva and 3 more | 84 min |
| Mar 27, 3:27 PM CDT | Severe Thunderstorm Watch | SPC | Coffee, Covington, Dale, Escambia, Geneva, Henry and 1 more | 5 hr |
| Mar 27, 6:24 PM CDT | Mesoscale Discussion | SPC | Baldwin, Coffee, Conecuh, Covington, Dale, Escambia and 4 more | 2 hr |
| Mar 26, 7:55 PM CDT | Mesoscale Discussion | SPC | Banks, Barrow, Bartow, Catoosa, Chattooga, Cherokee and 36 more | 95 min |
| Mar 26, 8:19 PM CDT | Severe Thunderstorm Watch | SPC | Banks, Barrow, Bartow, Burke, Catoosa, Chattooga and 39 more | 8 hr |
| Mar 26, 10:10 PM CDT | Mesoscale Discussion | SPC | Bryan, Bulloch, Candler, Chatham, Effingham, Evans and 3 more | 65 min |
| Mar 26, 11:43 PM CDT | Mesoscale Discussion | SPC | Banks, Barrow, Bartow, Burke, Catoosa, Chattooga and 38 more | 62 min |
| Mar 27, 2:03 AM CDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Ben Hill, Bibb, Bleckley and 40 more | 57 min |
| Mar 27, 2:25 AM CDT | Tornado Watch | SPC | Appling, Baldwin, Bibb, Bleckley, Bryan, Bulloch and 46 more | 3 hr |
Nearby
Mesoscale Discussions in Georgia, 2011Mesoscale Discussions in Florida, 2011Mesoscale Discussions in Alabama, 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.