Alert archive / Georgia / Tornado Watches in 2018
Tornado Watch 436
The Storm Prediction Center issued this tornado watch at Dec 2, 2018, 2:48 AM CST for 5 counties in Alabama; 38 counties in Georgia. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 2, 2018, 2:48 AM CST (08:48 UTC)
- Expired
- Dec 2, 2018, 10:00 AM CST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 43 counties
Coffee County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Brooks County, GA, Calhoun County, GA, Clay 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, Grady County, GA, Irwin County, GA, Lanier County, GA, Laurens County, GA, Lee County, GA, Lowndes County, GA, Miller County, GA, Mitchell County, GA, Montgomery County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Seminole County, GA, Sumter County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Turner County, GA, Wheeler County, GA, Wilcox County, GA, Worth County, GA
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
- 20%
- One or more gusts of 65 knots or more
- 5%
- 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
- 30%
Warnings issued inside it
19 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 2, 3:01 AM CST | Severe Thunderstorm Warning | TAE | Baker, Calhoun, Dougherty, Early, Lee, Mitchell and 3 more | 44 min |
| Dec 2, 3:14 AM CST | Flash Flood Warning | TAE | Calhoun, Dougherty, Lee, Randolph, Terrell, Worth | 3 hr |
| Dec 2, 3:27 AM CST | Tornado Warning | TAE | Dougherty, Lee, Turner, Worth | 33 min |
| Dec 2, 3:43 AM CST | Severe Thunderstorm Warning | TAE | Geneva, Houston | 47 min |
| Dec 2, 3:50 AM CST | Severe Thunderstorm Warning | TAE | Ben Hill, Irwin, Tift, Turner, Worth | 40 min |
| Dec 2, 4:02 AM CST | Tornado Warning | TAE | Dale, Geneva, Henry, Houston | 28 min |
| Dec 2, 4:08 AM CST | Severe Thunderstorm Warning | TAE | Baker, Dougherty, Mitchell, Tift, Turner, Worth | 31 min |
| Dec 2, 4:20 AM CST | Severe Thunderstorm Warning | TAE | Dale, Geneva, Henry, Houston | 40 min |
| Dec 2, 7:03 AM CST | Severe Thunderstorm Warning | TAE | Houston | 42 min |
| Dec 2, 7:33 AM CST | Severe Thunderstorm Warning | TAE | Decatur, Miller, Seminole | 27 min |
| Dec 2, 7:36 AM CST | Tornado Warning | TAE | Colquitt, Mitchell, Tift, Worth | 39 min |
| Dec 2, 7:49 AM CST | Severe Thunderstorm Warning | TAE | Decatur, Miller, Seminole | 16 min |
| Dec 2, 7:57 AM CST | Severe Thunderstorm Warning | TAE | Baker, Dougherty, Miller, Mitchell | 33 min |
| Dec 2, 8:12 AM CST | Tornado Warning | TAE | Berrien, Colquitt, Cook, Tift, Worth | 35 min |
| Dec 2, 8:24 AM CST | Severe Thunderstorm Warning | TAE | Decatur, Grady, Mitchell, Seminole | 51 min |
| Dec 2, 8:27 AM CST | Severe Thunderstorm Warning | TAE | Baker, Colquitt, Dougherty, Mitchell, Tift, Turner and 1 more | 36 min |
| Dec 2, 8:50 AM CST | Severe Thunderstorm Warning | TAE | Colquitt, Decatur, Grady, Mitchell, Thomas | 40 min |
| Dec 2, 8:59 AM CST | Severe Thunderstorm Warning | TAE | Berrien, Irwin, Tift | 46 min |
| Dec 2, 9:07 AM CST | Severe Thunderstorm Warning | TAE | Brooks, Lowndes, Thomas | 23 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
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 8.8 hours before the alert went out and 141 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
- 262 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 507 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 394 m²/s²
- 0-3 km storm-relative helicity
- 472 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.5
The text
As transmitted.
428 WWUS20 KWNS 020846 SEL6 SPC WW 020846 ALZ000-GAZ000-021600- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 436 NWS Storm Prediction Center Norman OK 345 AM EST Sun Dec 2 2018 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Southeastern Alabama Southwestern and south-central Georgia * Effective this Sunday morning from 345 AM until 1100 AM EST. * Primary threats include... A couple tornadoes possible Isolated damaging wind gusts to 70 mph possible SUMMARY...A persistent band of strong-severe thunderstorms is expected to move little through midmorning local time, in a moist environment with favorable instability and vertical shear. Episodic supercell formation and intensification is possible within this belt, offering brief tornado threats as well as a risk of damaging nontornadic gusts. The tornado watch area is approximately along and 25 statute miles either side of a line from 25 miles west southwest of Dothan AL to Vidalia GA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU6). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. && AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 25030. ...Edwards
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 1, 9:18 PM CST | Mesoscale Discussion | SPC | Coffee, Dale, Geneva, Henry, Houston | 87 min |
| Dec 1, 11:27 PM CST | Mesoscale Discussion | SPC | Dale, Geneva, Henry, Houston | 93 min |
| Dec 2, 2:03 AM CST | Mesoscale Discussion | SPC | Geneva, Henry, Houston | 2 hr |
| Dec 2, 6:00 AM CST | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 29 more | 2 hr |
| Dec 2, 9:00 AM CST | Tornado Watch | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 38 more | 8 hr |
| Dec 2, 11:32 AM CST | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 35 more | 88 min |
Nearby
Tornado Watches in Georgia, 2018Tornado Watches in Alabama, 2018Every tornado watch in 2018
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.