Alert archive / Tennessee / Tornado Warnings in 2016

Tornado Warning 24, NWS Nashville, TN

December 18, 20164 counties in Tennessee

NWS Nashville, TN issued this tornado warning at Dec 18, 2016, 1:20 AM CST for 4 counties in Tennessee. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Dec 18, 2016, 1:20 AM CST (07:20 UTC)
Expired
Dec 18, 2016, 1:45 AM CST
In force
25 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Bedford County, TN, Cannon County, TN, Coffee County, TN, Warren County, TN

The radar

The Northeast Alabama radar (KHTX), 67 km from the middle of the area, began a volume at 07:23 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Dec 17, 8:58 PM CSTTornado WatchSPC6 hr
Dec 18, 1:03 AM CSTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 7.3 hours before the alert went out and 76 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 00:00Z on 2016-12-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 26 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2016-12-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 511 square meters per square second.1939587897117Sfc1 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
26 J/kg
Mixed-layer CIN
-109 J/kg
Mixed-layer LCL
692 m above ground
0-6 km bulk shear
81 kt
0-1 km storm-relative helicity
511 m²/s²
0-3 km storm-relative helicity
473 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

193 
WFUS54 KOHX 180720
TOROHX
TNC003-015-031-177-180745-
/O.NEW.KOHX.TO.W.0024.161218T0720Z-161218T0745Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Nashville TN
120 AM CST SUN DEC 18 2016

The National Weather Service in Nashville has issued a

* Tornado Warning for...
  Southeastern Cannon County in Middle Tennessee...
  Western Warren County in Middle Tennessee...
  Southeastern Bedford County in Middle Tennessee...
  Central Coffee County in Middle Tennessee...

* Until 145 AM CST
    
* At 120 AM CST, a severe thunderstorm capable of producing a tornado
  was located 9 miles east of Shelbyville, moving northeast at 65
  mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Manchester around 130 AM CST. 
  McMinnville around 145 AM CST. 

Other locations impacted by this tornadic thunderstorm include Raus,
Summitville, Morrison, Wartrace, Normandy, Beechgrove, Centertown,
Viola and Bell Buckle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3537 8636 3552 8649 3563 8626 3563 8625
      3564 8624 3582 8587 3560 8568 3541 8625
      3541 8628 3539 8629
TIME...MOT...LOC 0720Z 244DEG 58KT 3552 8628 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

31
1 follow-up statement
195 
WWUS54 KOHX 180730
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
130 AM CST SUN DEC 18 2016

TNC003-180739-
/O.CAN.KOHX.TO.W.0024.000000T0000Z-161218T0745Z/
Bedford TN-
130 AM CST SUN DEC 18 2016

...THE TORNADO WARNING FOR SOUTHEASTERN BEDFORD COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out
of the warned area, therefore the warning has been cancelled.

A tornado watch remains in effect until 300 AM CST for Middle
Tennessee.

A severe thunderstorm watch remains in effect until 500 AM CST for
Middle Tennessee.

LAT...LON 3541 8625 3545 8625 3545 8624 3546 8625
      3551 8624 3563 8625 3564 8624 3582 8587
      3560 8568
TIME...MOT...LOC 0729Z 244DEG 58KT 3559 8610 

$$

TNC015-031-177-180745-
/O.CON.KOHX.TO.W.0024.000000T0000Z-161218T0745Z/
Cannon TN-Warren TN-Coffee TN-
130 AM CST SUN DEC 18 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 AM CST FOR
SOUTHEASTERN CANNON...WESTERN WARREN AND CENTRAL COFFEE COUNTIES...
    
At 129 AM CST, a severe thunderstorm capable of producing a tornado
was located 8 miles north of Manchester, moving northeast at 65 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  McMinnville around 145 AM CST. 

Other locations impacted by this tornadic thunderstorm include
Summitville, Morrison, Beechgrove, Centertown and Viola.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3541 8625 3545 8625 3545 8624 3546 8625
      3551 8624 3563 8625 3564 8624 3582 8587
      3560 8568
TIME...MOT...LOC 0729Z 244DEG 58KT 3559 8610 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
31

The office that day

Everything else NWS Nashville, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 17, 7:46 PM CSTSevere Thunderstorm WarningOHXHouston, Montgomery, Stewart44 min
Dec 17, 8:14 PM CSTSpecial Weather StatementOHXMontgomery31 min
Dec 17, 8:22 PM CSTSevere Thunderstorm WarningOHXMontgomery, Robertson23 min
Dec 17, 8:43 PM CSTSevere Thunderstorm WarningOHXMontgomery, Robertson32 min
Dec 17, 9:57 PM CSTSpecial Weather StatementOHXCheatham, Dickson33 min
Dec 17, 11:19 PM CSTSevere Thunderstorm WarningOHXMacon, Smith, Sumner, Trousdale, Wilson26 min
Dec 17, 11:57 PM CSTSpecial Weather StatementOHXClay33 min
Dec 18, 12:03 AM CSTSevere Thunderstorm WarningOHXLawrence, Wayne27 min
Dec 18, 12:16 AM CSTSevere Thunderstorm WarningOHXGiles, Lawrence, Marshall, Maury29 min
Dec 18, 12:30 AM CSTSpecial Weather StatementOHXJackson, Overton, Pickett45 min
Dec 18, 12:35 AM CSTSevere Thunderstorm WarningOHXClay, Fentress, Jackson, Overton, Pickett25 min
Dec 18, 12:38 AM CSTSevere Thunderstorm WarningOHXBedford, Giles, Marshall, Maury, Rutherford, Williamson22 min
Dec 18, 12:44 AM CSTSevere Thunderstorm WarningOHXBedford, Cannon, Rutherford, Wilson31 min
Dec 18, 12:49 AM CSTSevere Thunderstorm WarningOHXDeKalb, Putnam, White26 min
Dec 18, 12:56 AM CSTSevere Thunderstorm WarningOHXFentress, Pickett19 min
Dec 18, 12:59 AM CSTSevere Thunderstorm WarningOHXBedford, Cannon, Coffee, Marshall, Rutherford31 min
Dec 18, 1:04 AM CSTSevere Thunderstorm WarningOHXBedford, Giles, Marshall26 min
Dec 18, 1:42 AM CSTSevere Thunderstorm WarningOHXCoffee, Van Buren, Warren, White33 min
Dec 18, 1:59 AM CSTSpecial Weather StatementOHXCumberland31 min
Dec 18, 2:11 AM CSTSpecial Weather StatementOHXCoffee34 min
Dec 18, 2:18 AM CSTSpecial Weather StatementOHXCumberland27 min
Dec 18, 2:57 AM CSTSpecial Weather StatementOHXCumberland33 min

Nearby

Tornado Warnings in Tennessee, 2016Every tornado warning in 2016Tornadoes in 2016

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.