Alert archive / Georgia / Tornado Watches in 2023

Tornado Watch 13

January 4, 202321 counties in Florida; 47 counties in Georgia; 24 counties in South Carolina

The Storm Prediction Center issued this tornado watch at Jan 4, 2023, 8:36 AM EST for 21 counties in Florida; 47 counties in Georgia; 24 counties in South Carolina. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Jan 4, 2023, 8:36 AM EST (13:36 UTC)
Expired
Jan 4, 2023, 5:45 PM EST
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt
All 92 counties

Alachua County, FL, Baker County, FL, Bradford County, FL, Clay County, FL, Columbia County, FL, Duval County, FL, Flagler County, FL, Franklin County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Madison County, FL, Marion County, FL, Nassau County, FL, Putnam County, FL, Saint Johns County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Wakulla County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Ben Hill County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Bryan County, GA, Bulloch County, GA, Burke County, GA, Camden County, GA, Candler County, GA, Charlton County, GA, Chatham County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Columbia County, GA, Cook County, GA, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glynn County, GA, Irwin County, GA, Jeff Davis County, GA, Jenkins County, GA, Lanier County, GA, Liberty County, GA, Lincoln County, GA, Long County, GA, Lowndes County, GA, McDuffie County, GA, McIntosh County, GA, Montgomery County, GA, Pierce County, GA, Richmond County, GA, Screven County, GA, Tattnall County, GA, Telfair County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Ware County, GA, Wayne County, GA, Wheeler County, GA, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Clarendon County, SC, Colleton County, SC, Dorchester County, SC, Edgefield County, SC, Fairfield County, SC, Hampton County, SC, Jasper County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC

The radar

The Moody AFB radar (KVAX), 96 km from the middle of the area, began a volume at 13:37 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
40%
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

55 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jan 4, 9:17 AM ESTSevere Thunderstorm WarningTAECalhoun, Franklin, Gulf, Liberty58 min
Jan 4, 9:21 AM ESTSevere Thunderstorm WarningCAEBurke, Columbia, McDuffie, Richmond54 min
Jan 4, 9:41 AM ESTSevere Thunderstorm WarningCAEEdgefield, Saluda39 min
Jan 4, 9:43 AM ESTSevere Thunderstorm WarningTAEBaker, Colquitt, Decatur, Grady, Mitchell, Thomas47 min
Jan 4, 9:50 AM ESTSevere Thunderstorm WarningTAEFranklin, Jefferson, Leon, Liberty, Wakulla55 min
Jan 4, 9:56 AM ESTSevere Thunderstorm WarningCAEBurke, Richmond49 min
Jan 4, 10:00 AM ESTTornado WarningCAEAiken, Edgefield, Saluda30 min
Jan 4, 10:16 AM ESTSevere Thunderstorm WarningCAEAiken, Calhoun, Fairfield, Lexington, Newberry, Richland and 1 more44 min
Jan 4, 10:20 AM ESTSevere Thunderstorm WarningCHSScreven55 min
Jan 4, 10:31 AM ESTSevere Thunderstorm WarningTAEDixie, Jefferson, Lafayette, Madison, Taylor89 min
Jan 4, 10:31 AM ESTSevere Thunderstorm WarningTAEJefferson, Madison44 min
Jan 4, 10:32 AM ESTTornado WarningCAEAiken, Calhoun, Lexington, Orangeburg28 min
Jan 4, 10:33 AM ESTTornado WarningTAEColquitt, Mitchell, Worth12 min
Jan 4, 10:35 AM ESTSevere Thunderstorm Warning Considerable damage threatCAEAiken, Bamberg, Barnwell, Calhoun, Lexington, Orangeburg and 2 more40 min
Jan 4, 10:38 AM ESTTornado WarningCAELexington22 min
Jan 4, 10:54 AM ESTTornado WarningCAECalhoun, Lexington, Orangeburg, Richland36 min
Jan 4, 10:55 AM ESTTornado WarningCAECalhoun, Lexington, Richland19 min
Jan 4, 11:01 AM ESTSevere Thunderstorm WarningTAEBerrien, Brooks, Cook, Lanier, Lowndes59 min
Jan 4, 11:08 AM ESTSevere Thunderstorm WarningCHSAllendale, Hampton30 min
Jan 4, 11:17 AM ESTSevere Thunderstorm WarningCAECalhoun, Clarendon, Kershaw, Lee, Orangeburg, Richland and 1 more58 min
Jan 4, 11:19 AM ESTSevere Thunderstorm WarningCHSEffingham, Screven41 min
Jan 4, 11:26 AM ESTTornado WarningTAEBrooks, Lowndes34 min
Jan 4, 11:31 AM ESTTornado WarningCHSEffingham16 min
Jan 4, 11:34 AM ESTSevere Thunderstorm WarningCHSColleton, Dorchester41 min
Jan 4, 11:39 AM ESTSevere Thunderstorm WarningJAXHamilton, Suwannee36 min
Jan 4, 11:42 AM ESTSevere Thunderstorm WarningJAXAtkinson, Clinch33 min
Jan 4, 12:04 PM ESTTornado WarningJAXAtkinson, Clinch26 min
Jan 4, 12:06 PM ESTSevere Thunderstorm WarningTAELanier, Lowndes24 min
Jan 4, 12:14 PM ESTSevere Thunderstorm WarningJAXColumbia, Hamilton, Suwannee46 min
Jan 4, 12:29 PM ESTTornado WarningJAXAtkinson, Ware31 min
Jan 4, 12:30 PM ESTTornado WarningJAXClinch15 min
Jan 4, 12:46 PM ESTSevere Thunderstorm WarningJAXCharlton, Clinch, Ware29 min
Jan 4, 12:51 PM ESTSevere Thunderstorm WarningJAXAppling, Bacon, Brantley, Pierce, Ware24 min
Jan 4, 1:02 PM ESTTornado WarningJAXPierce18 min
Jan 4, 1:11 PM ESTSevere Thunderstorm WarningJAXNassau34 min
Jan 4, 1:18 PM ESTSevere Thunderstorm WarningCHSBryan, Chatham, Liberty, Long, McIntosh57 min
Jan 4, 1:27 PM ESTTornado WarningJAXCamden, Charlton18 min
Jan 4, 1:32 PM ESTSevere Thunderstorm WarningJAXBaker, Columbia, Hamilton, Nassau43 min
Jan 4, 1:40 PM ESTTornado WarningJAXBaker, Columbia35 min
Jan 4, 1:47 PM ESTSevere Thunderstorm WarningJAXCamden, Charlton, Glynn28 min
Jan 4, 2:01 PM ESTTornado Warning Tornado observedJAXCamden, Glynn14 min
Jan 4, 2:12 PM ESTTornado WarningJAXCamden, Glynn18 min
Jan 4, 2:17 PM ESTSevere Thunderstorm WarningJAXBaker, Columbia, Gilchrist, Nassau, Suwannee, Union28 min
Jan 4, 2:28 PM ESTSevere Thunderstorm WarningJAXCamden, Glynn17 min
Jan 4, 2:40 PM ESTSevere Thunderstorm WarningJAXAlachua, Bradford, Columbia, Gilchrist, Union35 min
Jan 4, 2:43 PM ESTSevere Thunderstorm WarningJAXAlachua, Bradford, Columbia, Gilchrist, Union47 min
Jan 4, 2:47 PM ESTSevere Thunderstorm Warning Considerable damage threatJAXNassau28 min
Jan 4, 2:50 PM ESTSevere Thunderstorm WarningJAXBaker, Bradford, Columbia, Union25 min
Jan 4, 3:11 PM ESTSevere Thunderstorm Warning Considerable damage threatJAXBaker, Bradford, Clay, Duval, Nassau, Union49 min
Jan 4, 3:14 PM ESTSevere Thunderstorm Warning Considerable damage threatJAXAlachua, Bradford, Gilchrist, Marion46 min
Jan 4, 3:15 PM ESTSevere Thunderstorm Warning Considerable damage threatJAXDuval, Nassau45 min
Jan 4, 3:44 PM ESTSevere Thunderstorm Warning Considerable damage threatJAXBradford, Clay, Duval, Saint Johns46 min
Jan 4, 3:57 PM ESTSevere Thunderstorm Warning Considerable damage threatJAXAlachua, Bradford, Clay, Marion, Putnam48 min
Jan 4, 4:14 PM ESTSevere Thunderstorm WarningJAXDuval, Saint Johns31 min
Jan 4, 5:14 PM ESTSevere Thunderstorm WarningJAXFlagler, Saint Johns19 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

Jacksonville, FL (KJAX), launched 12:00Z, 1.6 hours before the alert went out and 179 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.

Skew-T log-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 2023-01-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 430 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 2023-01-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 193 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
430 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
615 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
193 m²/s²
0-3 km storm-relative helicity
209 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.3

Open this sounding in Storm Lab

The text

As transmitted.

286 
WWUS20 KWNS 041333
SEL3  
SPC WW 041333
FLZ000-GAZ000-SCZ000-CWZ000-041900-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 13
NWS Storm Prediction Center Norman OK
835 AM EST Wed Jan 4 2023

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Northern Florida and eastern Florida Panhandle
  Eastern and southern Georgia
  Southern and central South Carolina
  Coastal Waters

* Effective this Wednesday morning and afternoon from 835 AM
  until 200 PM EST.

* Primary threats include...
  A couple tornadoes possible
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...A line of strong-severe thunderstorms should proceed
eastward out of tornado watch 12 and across this area, offering
damaging winds and the potential for a couple tornadoes before it
weakens later today.

The tornado watch area is approximately along and 60 statute miles
east and west of a line from 40 miles southeast of Tallahassee FL to
35 miles north northeast of Columbia SC. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU3).

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 12...

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 450. Mean
storm motion vector 24035.

...Edwards

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 4, 3:06 AM ESTMesoscale DiscussionSPCEscambia, Holmes, Okaloosa, Santa Rosa, Walton, Washington114 min
Jan 4, 3:59 AM ESTTornado WatchSPCBay, Calhoun, Escambia, Gadsden, Gulf, Holmes and 6 more7 hr
Jan 4, 8:07 AM ESTMesoscale DiscussionSPCBay, Calhoun, Franklin, Gadsden, Gulf, Hamilton and 9 more113 min
Jan 4, 12:36 PM ESTMesoscale DiscussionSPCBaker, Columbia, Hamilton, Lafayette, Nassau, Suwannee and 2 more114 min
Jan 4, 3:26 PM ESTMesoscale DiscussionSPCAlachua, Bradford, Clay, Duval, Flagler, Marion and 4 more94 min
Jan 4, 10:21 AM ESTMesoscale DiscussionSPCAiken, Bamberg, Barnwell, Berkeley, Calhoun, Clarendon and 14 more114 min
Jan 4, 11:19 AM ESTTornado WatchSPCDarlington, Dillon, Florence, Georgetown, Horry, Marion and 2 more4 hr
Jan 4, 12:52 PM ESTMesoscale DiscussionSPCGeorgetown, Horry, Marion, Williamsburg113 min

Nearby

Tornado Watches in Georgia, 2023Tornado Watches in South Carolina, 2023Tornado Watches in Florida, 2023Every tornado watch in 2023

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.