Alert archive / Georgia / Mesoscale Discussions in 2009
Mesoscale Discussion 133
The Storm Prediction Center issued this mesoscale discussion at Feb 18, 2009, 10:55 PM CST for 4 states. It was in force for 95 min.
The area
The outline as issued.
The facts
- Issued
- Feb 18, 2009, 10:55 PM CST (04:55 UTC)
- Expired
- Feb 19, 2009, 12:30 AM CST
- In force
- 95 min
- Issued by
- the Storm Prediction Center
All 136 counties
Barbour County, AL, Bullock County, AL, Butler County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Macon County, AL, Pike County, AL, Russell County, AL, Bay County, FL, Calhoun 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, Walton County, FL, Washington County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Baldwin County, GA, Ben Hill County, GA, Berrien County, GA, Bibb County, GA, Bleckley County, GA, Brantley County, GA, Brooks County, GA, Bryan County, GA, Bulloch County, GA, Burke County, GA, Calhoun County, GA, Candler County, GA, Charlton County, GA, Chatham County, GA, Chattahoochee County, GA, Clay County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Crawford County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glascock County, GA, Grady County, GA, Hancock County, GA, Harris County, GA, Houston County, GA, Irwin County, GA, Jeff Davis County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones 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, Monroe County, GA, Montgomery County, GA, Muscogee County, GA, Peach County, GA, Pierce County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Richmond County, GA, Schley County, GA, Screven County, GA, Seminole County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Tattnall County, GA, Taylor County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Turner County, GA, Twiggs County, GA, Upson County, GA, Ware County, GA, Washington County, GA, Wayne County, GA, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Wilkinson County, GA, Worth County, GA, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Clarendon County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Horry County, SC, Jasper County, SC, Orangeburg County, SC, Williamsburg County, SC
The radar
The Robins AFB radar (KJGX), 65 km from the middle of the area, began a volume at 04:56 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
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 4.9 hours before the alert went out and 194 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
- 185 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 831 m above ground
- 0-6 km bulk shear
- 94 kt
- 0-1 km storm-relative helicity
- 479 m²/s²
- 0-3 km storm-relative helicity
- 475 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 2.4
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 |
|---|---|---|---|---|
| Feb 18, 7:14 PM CST | Mesoscale Discussion | SPC | Autauga, Bibb, Bullock, Butler, Calhoun, Chambers and 27 more | 61 min |
| Feb 18, 7:42 PM CST | Severe Thunderstorm Watch | SPC | Autauga, Baldwin, Barbour, Bibb, Bullock, Butler and 31 more | 5 hr |
| Feb 18, 7:58 PM CST | Mesoscale Discussion | SPC | Barbour, Henry, Lee, Russell | 92 min |
| Feb 18, 9:14 PM CST | Severe Thunderstorm Watch | SPC | Coffee, Dale, Geneva, Henry, Houston | 6 hr |
| Feb 19, 12:41 AM CST | Mesoscale Discussion | SPC | Alachua, Baker, Bay, Bradford, Calhoun, Clay and 17 more | 49 min |
| Feb 19, 12:58 AM CST | Tornado Watch | SPC | Alachua, Baker, Bay, Bradford, Calhoun, Clay and 23 more | 7 hr |
| Feb 19, 3:19 AM CST | Mesoscale Discussion | SPC | Alachua, Baker, Bay, Bradford, Clay, Columbia and 18 more | 56 min |
| Feb 19, 6:06 AM CST | Mesoscale Discussion | SPC | Alachua, Bradford, Clay, Dixie, Gilchrist, Putnam and 1 more | 54 min |
| Feb 18, 7:02 PM CST | Severe Thunderstorm Watch | SPC | Bryan, Bulloch, Candler, Chatham, Effingham, Evans and 6 more | 7 hr |
| Feb 18, 11:38 PM CST | Severe Thunderstorm Watch | SPC | Appling, Atkinson, Bacon, Brantley, Camden, Charlton and 8 more | 81 min |
| Feb 19, 1:20 AM CST | Mesoscale Discussion | SPC | Bryan, Bulloch, Candler, Chatham, Crisp, Dodge and 13 more | 25 min |
| Feb 19, 1:44 AM CST | Tornado Watch | SPC | Bryan, Chatham, Evans, Liberty, Long, McIntosh and 1 more | 3 hr |
Nearby
Mesoscale Discussions in Georgia, 2009Mesoscale Discussions in Alabama, 2009Mesoscale Discussions in South 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.