Alert archive / Georgia / Tornado Watches in 2008
Tornado Watch 20
The Storm Prediction Center issued this tornado watch at Jan 11, 2008, 12:55 AM EST for 45 counties in Georgia. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 11, 2008, 12:55 AM EST (05:55 UTC)
- Expired
- Jan 11, 2008, 7:00 AM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 45 counties
Baldwin County, GA, Bibb County, GA, Bleckley County, GA, Chattahoochee County, GA, Clay County, GA, Crawford County, GA, Crisp County, GA, Dodge County, GA, Dooly County, GA, Glascock County, GA, Greene County, GA, Hancock County, GA, Harris County, GA, Houston County, GA, Jasper County, GA, Jefferson County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Laurens County, GA, Lee County, GA, Macon County, GA, Marion County, GA, Monroe County, GA, Muscogee County, GA, Peach County, GA, Pulaski County, GA, Putnam County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taliaferro County, GA, Taylor County, GA, Terrell County, GA, Twiggs County, GA, Upson County, GA, Warren County, GA, Washington County, GA, Webster County, GA, Wilcox County, GA, Wilkes County, GA, Wilkinson County, GA
The radar
The Robins AFB radar (KJGX), 90 km from the middle of the area, began a volume at 05:57 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 30%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 60%
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 5.9 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
- 32 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 980 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 297 m²/s²
- 0-3 km storm-relative helicity
- 349 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 10, 7:29 PM EST | Mesoscale Discussion | SPC | Bartow, Catoosa, Chattooga, Cherokee, Dawson, Fannin and 12 more | 61 min |
| Jan 10, 8:52 PM EST | Mesoscale Discussion | SPC | Bartow, Carroll, Catoosa, Chattahoochee, Chattooga, Cherokee and 29 more | 53 min |
| Jan 10, 10:38 PM EST | Mesoscale Discussion | SPC | Chattahoochee, Harris, Meriwether, Muscogee, Stewart, Troup | 67 min |
| Jan 11, 12:18 AM EST | Mesoscale Discussion | SPC | Bibb, Bleckley, Calhoun, Chattahoochee, Clay, Crawford and 23 more | 87 min |
| Jan 11, 2:21 AM EST | Tornado Watch | SPC | Baker, Ben Hill, Berrien, Brooks, Calhoun, Clay and 16 more | 7 hr |
| Jan 11, 3:05 AM EST | Mesoscale Discussion | SPC | Baldwin, Burke, Columbia, Emanuel, Glascock, Greene and 13 more | 85 min |
| Jan 11, 4:27 AM EST | Mesoscale Discussion | SPC | Bleckley, Calhoun, Clay, Crisp, Dodge, Dooly and 14 more | 63 min |
| Jan 11, 5:30 AM EST | Mesoscale Discussion | SPC | Baker, Berrien, Brooks, Calhoun, Colquitt, Cook and 13 more | 90 min |
Nearby
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.