Alert archive / Georgia / Mesoscale Discussions in 2009
Mesoscale Discussion 366
The Storm Prediction Center issued this mesoscale discussion at Apr 2, 2009, 10:06 AM CDT for 4 counties in Alabama; 22 counties in Florida; 65 counties in Georgia. It was in force for 54 min.
The area
The outline as issued.
The facts
- Issued
- Apr 2, 2009, 10:06 AM CDT (15:06 UTC)
- Expired
- Apr 2, 2009, 11:00 AM CDT
- In force
- 54 min
- Issued by
- the Storm Prediction Center
All 91 counties
Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Baker County, FL, Bay County, FL, Calhoun County, FL, Columbia County, FL, Dixie County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Hamilton County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Okaloosa County, FL, Suwannee County, FL, Taylor 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, Bleckley County, GA, Brantley County, GA, Brooks County, GA, Bryan County, GA, Calhoun County, GA, Camden County, GA, Charlton County, GA, Chattahoochee County, GA, Clay County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Echols County, GA, Evans County, GA, Glynn County, GA, Grady County, GA, Houston County, GA, Irwin County, GA, Jeff Davis County, GA, Lanier County, GA, Laurens County, GA, Lee County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, Macon County, GA, Marion County, GA, McIntosh County, GA, Miller County, GA, Mitchell County, GA, Montgomery County, GA, Pierce County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Seminole County, GA, Stewart County, GA, Sumter 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, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Worth County, GA
The radar
The Tallahassee radar (KTLH), 39 km from the middle of the area, began a volume at 15:06 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, 3.1 hours before the alert went out and 41 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
- 1561 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 484 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 297 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 6.4
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 |
|---|---|---|---|---|
| Apr 2, 3:12 AM CDT | Mesoscale Discussion | SPC | Chambers, Clay, Cleburne, Lee, Randolph, Tallapoosa | 63 min |
| Apr 2, 5:57 AM CDT | Mesoscale Discussion | SPC | Baldwin, Barbour, Bullock, Butler, Coffee, Conecuh and 9 more | 63 min |
| Apr 2, 6:29 AM CDT | Tornado Watch | SPC | Baldwin, Barbour, Bullock, Butler, Choctaw, Clarke and 19 more | 8 hr |
| Apr 2, 1:09 PM CDT | Mesoscale Discussion | SPC | Autauga, Baldwin, Bibb, Blount, Butler, Calhoun and 45 more | 66 min |
| Apr 2, 1:33 PM CDT | Tornado Watch | SPC | Autauga, Baldwin, Bibb, Blount, Butler, Chilton and 36 more | 5 hr |
| Apr 2, 2:00 PM CDT | Tornado Watch | SPC | Coffee, Dale, Geneva, Henry, Houston | 7 hr |
| Apr 2, 3:42 PM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Blount, Butler, Chilton, Coffee and 29 more | 63 min |
| Apr 2, 5:25 PM CDT | Mesoscale Discussion | SPC | Calhoun, Cherokee, Cleburne, DeKalb | 95 min |
| Apr 2, 6:02 PM CDT | Tornado Watch | SPC | Autauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 38 more | 7 hr |
| Apr 1, 11:52 PM CDT | Mesoscale Discussion | SPC | Bay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 7 more | 113 min |
| Apr 2, 7:31 AM CDT | Tornado Watch | SPC | Alachua, Baker, Bradford, Clay, Columbia, Duval and 6 more | 6 hr |
| Apr 2, 12:17 PM CDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Clay, Columbia, Dixie and 13 more | 58 min |
| Apr 2, 6:28 PM CDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Clay, Columbia, Duval and 8 more | 92 min |
Nearby
Mesoscale Discussions in Georgia, 2009Mesoscale Discussions in Florida, 2009Mesoscale Discussions in Alabama, 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.