Alert archive / Tennessee / Tornado Warnings in 2015

Tornado Warning 18, NWS Nashville, TN

December 23, 2015Cheatham County, Davidson County, Williamson County, Tennessee

NWS Nashville, TN issued this tornado warning at Dec 23, 2015, 7:08 PM CST for Cheatham County, Davidson County, Williamson County, Tennessee. It was in force for 37 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 23, 2015, 7:08 PM CST (01:08 UTC)
Expired: Dec 23, 2015, 7:45 PM CST
In force: 37 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Cheatham County, TN, Davidson County, TN, Williamson County, TN

The radar

The Nashville radar (KOHX), 45 km from the middle of the area, began a volume at 01:09 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.

Issued	Product	Office	Lasted
Dec 23, 4:49 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 1.1 hours before the alert went out and 37 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: -82 J/kg
Mixed-layer LCL: 624 m above ground
0-6 km bulk shear: 89 kt
0-1 km storm-relative helicity: 598 m²/s²
0-3 km storm-relative helicity: 698 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

841 
WFUS54 KOHX 240108 RRA
TOROHX
TNC021-037-187-240145-
/O.NEW.KOHX.TO.W.0018.151224T0108Z-151224T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
708 PM CST WED DEC 23 2015

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN WILLIAMSON COUNTY IN MIDDLE TENNESSEE...
  SOUTHWESTERN DAVIDSON COUNTY IN MIDDLE TENNESSEE...
  SOUTHEASTERN CHEATHAM COUNTY IN MIDDLE TENNESSEE...

* UNTIL 745 PM CST
    
* AT 707 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR FAIRVIEW...OR 12 MILES WEST OF FRANKLIN...
  MOVING NORTHEAST AT 40 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 720 PM CST.
  BRENTWOOD AROUND 725 PM CST.
  FOREST HILLS AND BELLE MEADE AROUND 730 PM CST.
  OAK HILL AROUND 735 PM CST.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
NATCHEZ TRACE AT HIGHWAY 96...BELLS BEND AND BERRY HILL.

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 3593 8709 3599 8717 3624 8695 3608 8665
TIME...MOT...LOC 0107Z 235DEG 36KT 3599 8706 

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

$$

WHITEHEAD

2 follow-up statements

092 
WWUS54 KOHX 240120
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
720 PM CST WED DEC 23 2015

TNC021-240129-
/O.CAN.KOHX.TO.W.0018.000000T0000Z-151224T0145Z/
CHEATHAM TN-
720 PM CST WED DEC 23 2015

...THE TORNADO WARNING FOR SOUTHEASTERN CHEATHAM 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 1100 PM CST FOR CENTRAL
TENNESSEE.

LAT...LON 3608 8665 3596 8699 3609 8704 3613 8700
      3620 8699 3624 8695
TIME...MOT...LOC 0119Z 235DEG 36KT 3606 8693 

$$

TNC037-187-240145-
/O.CON.KOHX.TO.W.0018.000000T0000Z-151224T0145Z/
WILLIAMSON TN-DAVIDSON TN-
720 PM CST WED DEC 23 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CST FOR NORTH
CENTRAL WILLIAMSON AND SOUTHWESTERN DAVIDSON COUNTIES...
    
AT 719 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED OVER BELLEVUE...OR 10 MILES NORTHWEST OF FRANKLIN...
MOVING NORTHEAST AT 40 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...
  BRENTWOOD AND FOREST HILLS AROUND 725 PM CST.
  BELLE MEADE AROUND 730 PM CST.
  OAK HILL AROUND 735 PM CST.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
NATCHEZ TRACE AT HIGHWAY 96...BELLS BEND AND BERRY HILL.

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 3608 8665 3596 8699 3609 8704 3613 8700
      3620 8699 3624 8695
TIME...MOT...LOC 0119Z 235DEG 36KT 3606 8693 

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

$$

WHITEHEAD

695 
WWUS54 KOHX 240137
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
737 PM CST WED DEC 23 2015

TNC037-187-240146-
/O.EXP.KOHX.TO.W.0018.000000T0000Z-151224T0145Z/
WILLIAMSON TN-DAVIDSON TN-
737 PM CST WED DEC 23 2015

...THE TORNADO WARNING FOR NORTH CENTRAL WILLIAMSON AND SOUTHWESTERN
DAVIDSON COUNTIES WILL EXPIRE AT 745 PM CST...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CST FOR CENTRAL
TENNESSEE.

LAT...LON 3608 8665 3596 8699 3609 8704 3613 8700
      3620 8699 3624 8695
TIME...MOT...LOC 0132Z 235DEG 36KT 3606 8693 

$$

WHITEHEAD

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 23, 6:05 PM CST	Special Weather Statement	OHX	Houston, Humphreys	25 min
Dec 23, 6:07 PM CST	Tornado Warning	OHX	Humphreys	23 min
Dec 23, 6:13 PM CST	Tornado Warning	OHX	Hickman, Lewis, Perry	32 min
Dec 23, 6:30 PM CST	Severe Thunderstorm Warning	OHX	Dickson, Houston, Humphreys, Montgomery	30 min
Dec 23, 6:35 PM CST	Tornado Warning Tornado observedConsiderable damage threat	OHX	Hickman, Maury	25 min
Dec 23, 6:48 PM CST	Tornado Warning	OHX	Wayne	27 min
Dec 23, 6:50 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Montgomery, Robertson	25 min
Dec 23, 6:56 PM CST	Tornado Warning	OHX	Cheatham, Dickson, Montgomery, Robertson	34 min
Dec 23, 6:58 PM CST	Tornado Warning	OHX	Hickman, Williamson	32 min
Dec 23, 7:08 PM CST	Tornado Warning Tornado observedConsiderable damage threat	OHX	Lawrence, Lewis, Wayne	37 min
Dec 23, 7:12 PM CST	Tornado Warning	OHX	Wayne	33 min
Dec 23, 7:24 PM CST	Special Weather Statement	OHX	Robertson	36 min
Dec 23, 7:30 PM CST	Tornado Warning	OHX	Davidson, Sumner, Wilson	30 min
Dec 23, 7:30 PM CST	Tornado Warning	OHX	Lawrence, Lewis, Maury	30 min
Dec 23, 7:33 PM CST	Tornado Warning	OHX	Lawrence, Wayne	27 min
Dec 23, 7:45 PM CST	Special Weather Statement	OHX	Sumner	45 min
Dec 23, 7:53 PM CST	Special Weather Statement	OHX	Cheatham, Dickson	37 min
Dec 23, 7:58 PM CST	Tornado Warning	OHX	Giles, Lawrence, Maury	32 min
Dec 23, 8:09 PM CST	Tornado Warning	OHX	Maury, Williamson	36 min
Dec 23, 8:12 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson	21 min
Dec 23, 8:17 PM CST	Tornado Warning	OHX	Cheatham, Davidson, Dickson	11 min
Dec 23, 8:24 PM CST	Tornado Warning	OHX	Marshall, Maury, Rutherford, Williamson	36 min
Dec 23, 8:33 PM CST	Special Weather Statement	OHX	Wayne	27 min
Dec 23, 8:44 PM CST	Severe Thunderstorm Warning	OHX	Lawrence, Lewis, Wayne	17 min
Dec 23, 8:50 PM CST	Tornado Warning	OHX	Rutherford	25 min
Dec 23, 9:11 PM CST	Special Weather Statement	OHX	Williamson	34 min
Dec 23, 9:15 PM CST	Flash Flood Warning	OHX	Lawrence, Lewis, Maury, Wayne	3 hr
Dec 23, 10:22 PM CST	Special Weather Statement	OHX	Jackson	23 min
Dec 23, 10:24 PM CST	Tornado Warning	OHX	DeKalb, Jackson, Putnam, Smith	36 min
Dec 23, 10:50 PM CST	Severe Thunderstorm Warning	OHX	Clay, Fentress, Overton, Pickett	25 min
Dec 23, 10:53 PM CST	Special Weather Statement	OHX	DeKalb, Putnam	37 min
Dec 23, 11:01 PM CST	Severe Thunderstorm Warning	OHX	DeKalb, Overton, Putnam, White	29 min
Dec 23, 11:13 PM CST	Severe Thunderstorm Warning	OHX	Fentress, Overton, Pickett	32 min
Dec 23, 11:25 PM CST	Special Weather Statement	OHX	Fentress	35 min

Nearby

Tornado Warnings in Tennessee, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.