Alert archive / Georgia / Mesoscale Discussions in 2009
Mesoscale Discussion 176
The Storm Prediction Center issued this mesoscale discussion at Feb 28, 2009, 12:50 PM CST for 5 counties in Florida; 43 counties in Georgia. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Feb 28, 2009, 12:50 PM CST (18:50 UTC)
- Expired
- Feb 28, 2009, 2:15 PM CST
- In force
- 85 min
- Issued by
- the Storm Prediction Center
All 48 counties
Calhoun County, FL, Gadsden County, FL, Jackson County, FL, Leon 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, Camden County, GA, Chatham County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Decatur County, GA, Dougherty County, GA, Echols County, GA, Evans County, GA, Glynn County, GA, Grady County, GA, Irwin County, GA, Jeff Davis County, GA, Lanier 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, Thomas County, GA, Tift County, GA, Toombs County, GA, Turner County, GA, Ware County, GA, Wayne County, GA, Wheeler County, GA, Worth County, GA
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 6.8 hours before the alert went out and 111 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
- 47 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 637 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 264 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.5
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, 9:49 AM CST | Mesoscale Discussion | SPC | Bay, Calhoun, Escambia, Gadsden, Holmes, Jackson and 8 more | 86 min |
| Feb 28, 10:39 AM CST | Tornado Watch | SPC | Bay, Calhoun, Franklin, Gadsden, Gulf, Holmes and 7 more | 7 hr |
| Feb 28, 3:27 PM CST | Mesoscale Discussion | SPC | Gadsden, Hamilton, Jefferson, Leon, Madison, Nassau | 93 min |
| Feb 28, 5:43 PM CST | Tornado Watch | SPC | Baker, Bay, Calhoun, Columbia, Dixie, Duval and 18 more | 8 hr |
| Feb 27, 6:38 PM CST | Mesoscale Discussion | SPC | Chattahoochee, Clay, Muscogee, Quitman, Stewart | 97 min |
| Feb 28, 7:25 AM CST | Tornado Watch | SPC | Baldwin, Bibb, Bleckley, Butts, Chattahoochee, Crawford and 43 more | 3 hr |
Nearby
Mesoscale Discussions in Georgia, 2009Mesoscale Discussions in Florida, 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.