Alert archive / Georgia / Tornado Watches in 2008
Tornado Watch 825
The Storm Prediction Center issued this tornado watch at Aug 13, 2008, 11:00 AM EDT for 19 counties in Florida; 39 counties in Georgia; 4 counties in South Carolina. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 13, 2008, 11:00 AM EDT (15:00 UTC)
- Expired
- Aug 13, 2008, 6:00 PM EDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 62 counties
Baker County, FL, Calhoun County, FL, Columbia County, FL, Dixie County, FL, Franklin County, FL, Gadsden County, FL, Gilchrist County, FL, Gulf County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Nassau County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Wakulla 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, Charlton 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, Effingham 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, Mitchell County, GA, Pierce County, GA, Tattnall County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Ware County, GA, Wayne County, GA, Worth County, GA, Beaufort County, SC, Charleston County, SC, Colleton County, SC, Jasper County, SC
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
- 20%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 50%
Warnings issued inside it
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 1:38 PM EDT | Severe Thunderstorm Warning | JAX | Columbia, Hamilton, Suwannee | 52 min |
| Aug 13, 2:08 PM EDT | Severe Thunderstorm Warning | JAX | Baker, Columbia, Nassau | 52 min |
| Aug 13, 2:26 PM EDT | Severe Thunderstorm Warning | JAX | Duval, Nassau | 64 min |
| Aug 13, 2:38 PM EDT | Severe Thunderstorm Warning | JAX | Baker, Duval, Nassau | 52 min |
| Aug 13, 4:43 PM EDT | Severe Thunderstorm Warning | JAX | Alachua, Baker, Bradford, Clay, Gilchrist, Putnam and 1 more | 47 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 3.0 hours before the alert went out and 299 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
- 394 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 9:51 PM EDT | Mesoscale Discussion | SPC | Bay, Calhoun, Escambia, Gadsden, Gulf, Holmes and 6 more | 54 min |
| Aug 13, 3:15 AM EDT | Mesoscale Discussion | SPC | Baker, Bay, Calhoun, Columbia, Franklin, Gadsden and 16 more | 60 min |
| Aug 13, 4:02 AM EDT | Tornado Watch | SPC | Alachua, Baker, Bay, Bradford, Calhoun, Columbia and 20 more | 7 hr |
| Aug 13, 8:23 AM EDT | Mesoscale Discussion | SPC | Alachua, Baker, Bay, Bradford, Calhoun, Clay and 21 more | 97 min |
| Aug 13, 1:24 PM EDT | Mesoscale Discussion | SPC | Baker, Calhoun, Columbia, Duval, Franklin, Gadsden and 12 more | 96 min |
Nearby
Tornado Watches in Georgia, 2008Tornado Watches in Florida, 2008Tornado Watches in South Carolina, 2008Every tornado watch in 2008
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.