Alert archive / Tennessee / Tornado Watches in 2023

Tornado Watch 39

February 16, 20234 states

The Storm Prediction Center issued this tornado watch at Feb 16, 2023, 12:00 PM CST for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Feb 16, 2023, 12:00 PM CST (18:00 UTC)
Expired
Feb 16, 2023, 7:00 PM CST
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt
All 87 counties

Colbert County, AL, Cullman County, AL, Franklin County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL, Allen County, KY, Barren County, KY, Clinton County, KY, Cumberland County, KY, Logan County, KY, Metcalfe County, KY, Monroe County, KY, Simpson County, KY, Warren County, KY, Alcorn County, MS, Benton County, MS, Calhoun County, MS, Chickasaw County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Monroe County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Yalobusha County, MS, Bedford County, TN, Benton County, TN, Cannon County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, Decatur County, TN, DeKalb County, TN, Dickson County, TN, Fayette County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hardeman County, TN, Hardin County, TN, Henderson County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Macon County, TN, Madison County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Moore County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 99 km from the middle of the area, began a volume at 18:03 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
30%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Feb 16, 12:17 PM CSTSevere Thunderstorm WarningMEGBenton, Marshall19 min
Feb 16, 12:58 PM CSTTornado WarningMEGBenton, Carroll, Decatur, Henderson32 min
Feb 16, 1:19 PM CSTTornado WarningOHXHumphreys41 min
Feb 16, 1:28 PM CSTSevere Thunderstorm WarningMEGAlcorn, Benton, Tippah47 min
Feb 16, 1:35 PM CSTTornado WarningMEGAlcorn, Tippah40 min
Feb 16, 1:38 PM CSTTornado WarningMEGHardin, McNairy23 min
Feb 16, 1:50 PM CSTTornado WarningOHXDickson, Humphreys25 min
Feb 16, 2:13 PM CSTTornado WarningMEGAlcorn, Tishomingo62 min
Feb 16, 2:28 PM CSTSevere Thunderstorm WarningMEGCalhoun, Chickasaw, Pontotoc47 min
Feb 16, 2:32 PM CSTTornado WarningHUNLauderdale28 min
Feb 16, 2:59 PM CSTSevere Thunderstorm WarningOHXDavidson18 min
Feb 16, 3:02 PM CSTSevere Thunderstorm WarningHUNLauderdale13 min
Feb 16, 3:02 PM CSTTornado WarningMEGPrentiss, Tishomingo15 min
Feb 16, 3:42 PM CSTTornado WarningOHXGiles, Lawrence, Maury33 min
Feb 16, 3:45 PM CSTTornado WarningMEGItawamba, Monroe45 min
Feb 16, 4:35 PM CSTTornado WarningOHXBedford, Marshall12 min
Feb 16, 4:56 PM CSTSevere Thunderstorm WarningOHXBedford, Giles, Marshall34 min
Feb 16, 5:00 PM CSTSevere Thunderstorm WarningOHXCannon, Rutherford, Wilson30 min
Feb 16, 5:01 PM CSTSevere Thunderstorm WarningOHXGiles, Lawrence44 min
Feb 16, 5:18 PM CSTSevere Thunderstorm WarningOHXBedford, Cannon, Coffee, Rutherford27 min
Feb 16, 5:28 PM CSTSevere Thunderstorm WarningOHXCannon, DeKalb, Smith, Wilson11 min
Feb 16, 5:29 PM CSTSevere Thunderstorm WarningHUNLincoln46 min
Feb 16, 5:54 PM CSTSevere Thunderstorm WarningOHXDeKalb, Van Buren, Warren, White23 min
Feb 16, 5:55 PM CSTFlash Flood WarningHUNFranklin, Lawrence3 hr
Feb 16, 6:02 PM CSTSevere Thunderstorm WarningHUNCullman24 min
Feb 16, 6:10 PM CSTSevere Thunderstorm WarningOHXVan Buren, Warren35 min
Feb 16, 6:16 PM CSTSevere Thunderstorm WarningOHXCumberland, Putnam, White29 min
Feb 16, 6:32 PM CSTTornado WarningHUNFranklin, Lincoln, Moore14 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

Nashville Metro, TN (KBNA), launched 12:00Z, 6.0 hours before the alert went out and 88 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, Nashville Metro, TN at 12:00Z on 2023-02-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 30 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, Nashville Metro, TN at 12:00Z on 2023-02-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 411 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
30 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
546 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
411 m²/s²
0-3 km storm-relative helicity
528 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

As transmitted.

108 
WWUS20 KWNS 161759
SEL9  
SPC WW 161759
ALZ000-KYZ000-MSZ000-TNZ000-170100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 39
NWS Storm Prediction Center Norman OK
1200 PM CST Thu Feb 16 2023

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Northern Alabama
  South central Kentucky
  Northern Mississippi
  Western and middle Tennessee

* Effective this Thursday afternoon and evening from NOON until
  700 PM CST.

* Primary threats include...
  A few tornadoes and a couple intense tornadoes possible
  Scattered damaging wind gusts to 70 mph possible
  Isolated large hail events to 1 inch in diameter possible

SUMMARY...Scattered strong-severe storms will spread eastward across
northern Mississippi/western and middle Tennessee into northern
Alabama and south central Kentucky through the afternoon.  The storm
environment will support a threat of both supercells and bowing
segments capable of producing damaging winds and a few tornadoes,
one or two of which could be strong.

The tornado watch area is approximately along and 85 statute miles
east and west of a line from 45 miles north northeast of Nashville
TN to 30 miles south of Oxford MS. 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 38...

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 25040.

...Thompson

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 16, 11:33 AM CSTMesoscale DiscussionSPCColbert, Franklin, Lauderdale, Lawrence, Limestone27 min
Feb 16, 11:37 AM CSTMesoscale DiscussionSPCChoctaw, Greene, Hale, Pickens, Sumter83 min
Feb 16, 1:17 PM CSTMesoscale DiscussionSPCAutauga, Bibb, Blount, Chilton, Choctaw, Clarke and 23 more88 min
Feb 16, 1:50 PM CSTTornado WatchSPCAutauga, Bibb, Blount, Chilton, Choctaw, Clarke and 19 more6 hr
Feb 16, 2:02 PM CSTMesoscale DiscussionSPCColbert, Franklin, Lauderdale, Lawrence, Limestone, Madison and 3 more118 min
Feb 16, 2:20 PM CSTMesoscale DiscussionSPCChoctaw, Sumter55 min
Feb 16, 3:42 PM CSTMesoscale DiscussionSPCColbert, Franklin, Lauderdale, Lawrence, Limestone, Madison and 2 more2 hr
Feb 16, 5:56 PM CSTMesoscale DiscussionSPCBaldwin, Bibb, Chilton, Choctaw, Clarke, Dallas and 15 more2 hr
Feb 16, 5:57 PM CSTMesoscale DiscussionSPCJackson, Limestone, Madison, Morgan93 min
Feb 15, 11:13 PM CSTSevere Thunderstorm WatchSPCBallard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 16 more6 hr
Feb 16, 4:08 AM CSTMesoscale DiscussionSPCCalloway, Carlisle, Fulton, Graves, Hickman, McCracken67 min
Feb 16, 4:51 AM CSTTornado WatchSPCBallard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 11 more7 hr
Feb 16, 7:30 AM CSTMesoscale DiscussionSPCCalloway, Fulton, Graves, Hickman, Trigg90 min
Feb 15, 9:22 PM CSTTornado WatchSPCAlcorn, Benton, Bolivar, Carroll, Coahoma, DeSoto and 22 more8 hr
Feb 15, 10:50 PM CSTMesoscale DiscussionSPCBenton, Bolivar, Coahoma, DeSoto, Marshall, Panola and 6 more115 min
Feb 16, 7:54 AM CSTMesoscale DiscussionSPCAdams, Amite, Claiborne, Franklin, Issaquena, Jefferson and 3 more2 hr
Feb 16, 9:23 AM CSTMesoscale DiscussionSPCBenton, Bolivar, Coahoma, DeSoto, Marshall, Panola and 3 more2 hr
Feb 16, 9:59 AM CSTTornado WatchSPCAdams, Amite, Attala, Bolivar, Carroll, Choctaw and 45 more9 hr

Nearby

Tornado Watches in Tennessee, 2023Tornado Watches in Mississippi, 2023Tornado Watches in Kentucky, 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.