Alert archive / Alabama / Tornado Watches in 2023

Tornado Watch 9

January 3, 202310 counties in Alabama; 10 counties in Georgia

The Storm Prediction Center issued this tornado watch at Jan 3, 2023, 3:20 PM CST for 10 counties in Alabama; 10 counties in Georgia. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jan 3, 2023, 3:20 PM CST (21:20 UTC)
Expired
Jan 3, 2023, 8:00 PM CST
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt

Counties Butler County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Baker County, GA, Calhoun County, GA, Clay County, GA, Dougherty County, GA, Early County, GA, Lee County, GA, Miller County, GA, Quitman County, GA, Randolph County, GA, Terrell County, GA

The radar

The Ft Rucker radar (KEOX), 51 km from the middle of the area, began a volume at 21:19 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
50%
One or more EF2 to EF5 tornadoes
40%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
10%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jan 3, 4:31 PM CSTSevere Thunderstorm WarningTAEHenry, Houston59 min
Jan 3, 5:21 PM CSTSevere Thunderstorm WarningTAECalhoun, Randolph, Terrell54 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

Birmingham, AL (KBMX), launched 12:00Z, 9.3 hours before the alert went out and 182 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, Birmingham, AL at 12:00Z on 2023-01-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 169 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, Birmingham, AL at 12:00Z on 2023-01-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 257 square meters per square second.1939587897Sfc1 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
169 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
620 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
257 m²/s²
0-3 km storm-relative helicity
318 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.1

Open this sounding in Storm Lab

The text

As transmitted.

022 
WWUS20 KWNS 032116
SEL9  
SPC WW 032116
ALZ000-GAZ000-040200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 9
NWS Storm Prediction Center Norman OK
320 PM CST Tue Jan 3 2023

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Southeast Alabama
  Southwest Georgia

* Effective this Tuesday afternoon and evening from 320 PM until
  800 PM CST.

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

SUMMARY...Isolated thunderstorms have been intensifying over
southeast Alabama.  These storms are in an environment favorable for
supercells, and could pose a risk of locally damaging wind gusts or
perhaps a tornado or two through early evening.

The tornado watch area is approximately along and 35 statute miles
north and south of a line from 10 miles west southwest of Evergreen
AL to 35 miles north northeast of Albany GA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).

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 7...WW 8...

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 24035.

...Hart

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 3, 7:56 AM CSTMesoscale DiscussionSPCColbert, Franklin, Lauderdale, Lawrence, Limestone, Marion2 hr
Jan 3, 9:14 AM CSTTornado WatchSPCAutauga, Bibb, Blount, Chilton, Choctaw, Clarke and 30 more8 hr
Jan 3, 11:38 AM CSTMesoscale DiscussionSPCBibb, Choctaw, Clarke, Dallas, Greene, Hale and 7 more97 min
Jan 3, 12:29 PM CSTMesoscale DiscussionSPCAutauga, Bullock, Butler, Calhoun, Chambers, Cherokee and 15 more91 min
Jan 3, 12:56 PM CSTTornado WatchSPCBarbour, Bullock, Calhoun, Chambers, Cherokee, Clay and 13 more7 hr
Jan 3, 2:07 PM CSTMesoscale DiscussionSPCAutauga, Calhoun, Chambers, Chilton, Clarke, Clay and 13 more113 min
Jan 3, 2:54 PM CSTMesoscale DiscussionSPCBarbour, Bullock, Butler, Coffee, Conecuh, Covington and 8 more2 hr
Jan 3, 5:19 PM CSTMesoscale DiscussionSPCBaldwin, Bibb, Bleckley, Butts, Crawford, Crisp and 25 more86 min

Nearby

Tornado Watches in Alabama, 2023Tornado Watches in Georgia, 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.