Alert archive / Tennessee / Tornado Warnings in 2021

Tornado Warning 55, NWS Nashville, TN

December 11, 2021Davidson County, Williamson County, Tennessee

NWS Nashville, TN issued this tornado warning at Dec 11, 2021, 2:59 AM CST for Davidson County, Williamson County, Tennessee. It was in force for 31 min. 10 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Dec 11, 2021, 2:59 AM CST (08:59 UTC)
Expired
Dec 11, 2021, 3:30 AM CST
In force
31 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Davidson County, TN, Williamson County, TN

The radar

The Nashville radar (KOHX), 45 km from the middle of the area, began a volume at 08:59 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 was reported inside it

TimeReportWhereRemark
Dec 11, 3:18 AM CSTTSTM WND DMG1 E Brentwood, TNONE-HALF DOZEN TREES SNAPPED NEAR CONCORD ROAD AND WILSON PIKE.
Dec 11, 3:20 AM CSTTSTM WND DMG2 Ese Oak Hill, TNSEVERE STRAIGHT LINE WINDS CAUSED SPORADIC WIND DAMAGE THROUGHOUT A ROUGHLY 6 MILES WIDE SWATH ACROSS MUCH OF THE SOUTHEAST NASHVILLE AREAS OF BRENTWOOD, CRIEVE HALL, THE ELLINGTON AG CENTER, NIPPERS CORNER, ANTIOCH, NASHBORO VILLAGE, AND AROUND THE NASHVILLE
Dec 11, 3:20 AM CSTTSTM WND DMG3 Nnw Brentwood, TNNUMEROUS TREES AND POWER LINES WERE BLOWN DOWN.
Dec 11, 3:23 AM CSTTSTM WND DMG2 Se Oak Hill, TNSEVERAL POWER POLES SNAPPED IN CRIEVE HALL ALONG BRENTVIEW HILLS DRIVE NEAR STALLWORTH DRIVE. TWITTER REPORT.
Dec 11, 3:28 AM CSTTSTM WND GST 78Nashville Intl Airport, TNNASHVILLE INTL AIRPORT ASOS MEASURED A PEAK WIND GUST OF 78 MPH. THIS IS THE THIRD HIGHEST WIND GUST EVER MEASURED AT THE AIRPORT.
Dec 11, 3:30 AM CSTTSTM WND DMGNashville, TNTREES AND POWER LINES WERE BLOWN DOWN ACROSS NASHVILLE AREA. AROUND 80,000 CUSTOMERS LOST POWER.
Dec 11, 3:31 AM CSTTSTM WND GST 692 Nne Brentwood, TNMESONET STATION EW9547 BRENTWOOD.
Dec 11, 3:31 AM CSTTSTM WND GST 692 Nne Brentwood, TNMESONET STATION EW9547 BRENTWOOD.
Dec 11, 3:31 AM CSTNON-TSTM WND GST 692 Nne Brentwood, TNMESONET STATION EW9547 BRENTWOOD.
Dec 11, 3:31 AM CSTNON-TSTM WND GST 692 Nne Brentwood, TNMESONET STATION EW9547 BRENTWOOD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
Dec 10, 6:21 PM CSTTornado WatchSPC10 hr
Dec 10, 10:44 PM CSTTornado WatchSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 9.0 hours before the alert went out and 36 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 2021-12-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 182 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 2021-12-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 391 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
182 J/kg
Mixed-layer CIN
-168 J/kg
Mixed-layer LCL
593 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
391 m²/s²
0-3 km storm-relative helicity
370 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

684 
WFUS54 KOHX 110859
TOROHX
TNC037-187-110930-
/O.NEW.KOHX.TO.W.0055.211211T0859Z-211211T0930Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Nashville TN
259 AM CST Sat Dec 11 2021

The National Weather Service in Nashville has issued a

* Tornado Warning for...
  Southern Davidson County in Middle Tennessee...
  Northern Williamson County in Middle Tennessee...

* Until 330 AM CST.
    
* At 259 AM CST, a severe thunderstorm capable of producing a tornado
  was located over Fairview, or 15 miles west of Franklin, moving
  east at 50 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...
  Bellevue around 315 AM CST.
  Franklin, Brentwood, Forest Hills and Belle Meade around 320 AM 
  CST.
  Nashville, Nolensville and Oak Hill around 325 AM CST.
  Antioch around 330 AM CST.

Other locations impacted by this tornadic thunderstorm include Berry
Hill, Leipers Fork and Natchez Trace At Highway 96.

Dickens Festival in Franklin will also be impacted.

This includes the following highways...
 Interstate 40 between mile markers 182 and 184, and between mile
markers 192 and 217.
 Interstate 65 between mile markers 67 and 86.
 Interstate 24 between mile markers 47 and 63.
 Interstate 840 between mile markers 7 and 16.

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 3623 8669 3601 8660 3600 8662 3599 8661
      3583 8716 3592 8721 3594 8720 3597 8721
      3598 8719 3603 8719 3605 8713 3604 8706
      3605 8705 3604 8704 3609 8704
TIME...MOT...LOC 0859Z 248DEG 45KT 3595 8712 

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

$$

10

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 11:29 PM CSTTornado Warning Tornado observedOHXStewart46 min
Dec 11, 12:03 AM CSTTornado Warning Tornado observedConsiderable damage threatOHXMontgomery, Stewart16 min
Dec 11, 12:19 AM CSTSevere Thunderstorm WarningOHXMontgomery, Stewart41 min
Dec 11, 1:28 AM CSTSevere Thunderstorm WarningOHXStewart21 min
Dec 11, 1:47 AM CSTSevere Thunderstorm Warning Considerable damage threatOHXDickson, Hickman, Houston, Humphreys, Lewis, Montgomery and 2 more73 min
Dec 11, 2:03 AM CSTTornado WarningOHXHouston, Humphreys, Stewart27 min
Dec 11, 2:07 AM CSTTornado WarningOHXDickson, Hickman, Humphreys, Perry38 min
Dec 11, 2:23 AM CSTTornado WarningOHXDickson, Houston, Montgomery, Stewart37 min
Dec 11, 2:38 AM CSTTornado WarningOHXDickson, Hickman, Humphreys37 min
Dec 11, 2:39 AM CSTTornado WarningOHXCheatham, Dickson, Montgomery14 min
Dec 11, 2:47 AM CSTSevere Thunderstorm WarningOHXCheatham, Davidson, Dickson, Hickman, Lewis, Maury and 5 more58 min
Dec 11, 2:58 AM CSTTornado WarningOHXCheatham, Davidson, Dickson, Williamson32 min
Dec 11, 3:19 AM CSTSevere Thunderstorm WarningOHXDavidson, Hickman, Lewis, Marshall, Maury, Robertson and 5 more41 min
Dec 11, 3:21 AM CSTTornado WarningOHXDavidson, Sumner, Wilson39 min
Dec 11, 3:29 AM CSTSevere Thunderstorm Warning Destructive damage threatOHXDavidson, Rutherford, Smith, Sumner, Trousdale, Williamson and 1 more46 min
Dec 11, 3:33 AM CSTTornado WarningOHXDavidson, Macon, Smith, Sumner, Trousdale, Wilson42 min
Dec 11, 3:46 AM CSTTornado WarningOHXClay, Macon, Sumner, Trousdale44 min
Dec 11, 3:48 AM CSTSevere Thunderstorm WarningOHXLewis, Perry, Wayne42 min
Dec 11, 3:50 AM CSTSevere Thunderstorm Warning Considerable damage threatOHXClay, DeKalb, Jackson, Macon, Putnam, Smith and 3 more17 min
Dec 11, 3:56 AM CSTTornado WarningOHXLewis, Perry, Wayne13 min
Dec 11, 4:07 AM CSTTornado WarningOHXClay, Jackson, Macon, Overton, Smith, Trousdale38 min
Dec 11, 4:11 AM CSTSevere Thunderstorm Warning Considerable damage threatOHXClay, Fentress, Jackson, Macon, Overton, Pickett and 4 more34 min
Dec 11, 4:33 AM CSTTornado WarningOHXClay, Fentress, Overton, Pickett42 min
Dec 11, 5:01 AM CSTSevere Thunderstorm WarningOHXGiles, Lawrence, Lewis, Marshall, Maury29 min
Dec 11, 5:21 AM CSTSevere Thunderstorm WarningOHXOverton, Putnam27 min
Dec 11, 5:39 AM CSTSevere Thunderstorm WarningOHXGiles, Lawrence, Wayne36 min
Dec 11, 5:56 AM CSTSevere Thunderstorm WarningOHXGiles, Lawrence, Marshall, Maury34 min
Dec 11, 6:13 AM CSTTornado WarningOHXGiles15 min
Dec 11, 6:58 AM CSTSevere Thunderstorm WarningOHXBedford, Coffee, Grundy, Warren32 min
Dec 11, 7:22 AM CSTSevere Thunderstorm WarningOHXCoffee, Grundy38 min
Dec 11, 7:35 AM CSTTornado WarningOHXGrundy25 min

Nearby

Tornado Warnings in Tennessee, 2021Every tornado warning in 2021Tornadoes in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.