Alert archive / Georgia / Tornado Watches in 2018
Tornado Watch 435
The Storm Prediction Center issued this tornado watch at Dec 1, 2018, 5:53 PM CST for 6 counties in Alabama; 17 counties in Florida; 32 counties in Georgia. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 1, 2018, 5:53 PM CST (23:53 UTC)
- Expired
- Dec 2, 2018, 3:00 AM CST
- In force
- 9 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 50 kt
All 55 counties
Coffee County, AL, Covington County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Okaloosa County, FL, Taylor County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, 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, 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, Quitman County, GA, Randolph County, GA, Seminole County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Wheeler County, GA, Wilcox County, GA, Worth County, GA
The radar
The Ft Rucker radar (KEOX), 71 km from the middle of the area, began a volume at 23:56 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.
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
- 20%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 50%
Warnings issued inside it
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 1, 6:20 PM CST | Flash Flood Warning | TAE | Holmes, Jackson, Washington | 4 hr |
| Dec 1, 6:40 PM CST | Flash Flood Warning | TAE | Decatur, Grady, Seminole | 4 hr |
| Dec 1, 7:36 PM CST | Flash Flood Warning | TAE | Seminole | 2 hr |
| Dec 1, 10:48 PM CST | Flash Flood Warning | TAE | Calhoun, Lee, Randolph, Terrell | 3 hr |
| Dec 1, 10:58 PM CST | Severe Thunderstorm Warning | TAE | Dale, Geneva, Henry, Houston | 47 min |
| Dec 1, 11:23 PM CST | Severe Thunderstorm Warning | TAE | Baker, Calhoun, Dougherty, Lee, Terrell | 37 min |
| Dec 1, 11:27 PM CST | Severe Thunderstorm Warning | TAE | Henry, Houston | 48 min |
| Dec 1, 11:35 PM CST | Flash Flood Warning | FFC | Crisp, Dooly, Sumter | 6 hr |
| Dec 2, 12:25 AM CST | Severe Thunderstorm Warning | TAE | Baker, Calhoun, Dougherty, Early, Terrell | 50 min |
| Dec 2, 12:40 AM CST | Tornado Warning | TAE | Calhoun, Dougherty, Lee, Terrell | 35 min |
| Dec 2, 1:01 AM CST | Severe Thunderstorm Warning | TAE | Dougherty, Lee, Worth | 44 min |
| Dec 2, 1:16 AM CST | Tornado Warning | TAE | Dougherty, Worth | 29 min |
| Dec 2, 1:24 AM CST | Severe Thunderstorm Warning | TAE | Coffee, Dale, Geneva, Henry, Houston | 51 min |
| Dec 2, 1:26 AM CST | Flash Flood Warning | FFC | Dodge, Pulaski, Wilcox | 6 hr |
| Dec 2, 1:54 AM CST | Severe Thunderstorm Warning | TAE | Dale, Henry, Houston | 51 min |
| Dec 2, 2:20 AM CST | Severe Thunderstorm Warning | TAE | Holmes, Walton | 40 min |
| Dec 2, 2:26 AM CST | Severe Thunderstorm Warning | TAE | Henry | 49 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 12:00Z, 11.9 hours before the alert went out and 93 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 976 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 259 m²/s²
- 0-3 km storm-relative helicity
- 531 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
673 WWUS20 KWNS 012350 SEL5 SPC WW 012350 ALZ000-FLZ000-GAZ000-CWZ000-020700- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 435 NWS Storm Prediction Center Norman OK 655 PM EST Sat Dec 1 2018 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of southeast Alabama portions of the Florida Panhandle and northern Florida the southwest quarter of Georgia Coastal Waters * Effective this Saturday night and Sunday morning from 655 PM until 200 AM EST. * Primary threats include... A couple tornadoes possible Isolated damaging wind gusts to 60 mph possible Isolated large hail events to 1 inch in diameter possible SUMMARY...Thunderstorms are forecast to continue over the next several hours across the watch area. A few severe storms are expected, with potential for a couple of tornadoes this evening, in addition to risk for locally damaging winds and hail. The tornado watch area is approximately along and 60 statute miles north and south of a line from 45 miles west northwest of Panama City FL to 30 miles north northeast of Valdosta GA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU5). 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. && OTHER WATCH INFORMATION...CONTINUE...WW 433...WW 434... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 50 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 25040. ...Goss
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 1, 4:31 AM CST | Mesoscale Discussion | SPC | Baldwin, Choctaw, Clarke, Conecuh, Escambia, Mobile and 2 more | 59 min |
| Dec 1, 11:16 AM CST | Tornado Watch | SPC | Coffee, Covington, Dale, Escambia, Geneva, Henry and 1 more | 7 hr |
| Dec 1, 1:35 PM CST | Mesoscale Discussion | SPC | Coffee, Covington, Dale, Geneva, Houston | 85 min |
| Dec 1, 3:07 PM CST | Mesoscale Discussion | SPC | Autauga, Bibb, Chilton, Clay, Coosa, Dallas and 10 more | 113 min |
| Dec 1, 3:38 PM CST | Mesoscale Discussion | SPC | Coffee, Covington, Dale, Geneva, Houston | 97 min |
| Dec 1, 5:28 PM CST | Mesoscale Discussion | SPC | Colbert, Cullman, Fayette, Franklin, Lamar, Lauderdale and 7 more | 62 min |
| Dec 1, 10:45 AM CST | Mesoscale Discussion | SPC | Bay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 4 more | 2 hr |
Nearby
Tornado Watches in Georgia, 2018Tornado Watches in Florida, 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; radar from the NEXRAD Level II archive.