Alert archive / Tennessee / Tornado Warnings in 2014

Tornado Warning 3, NWS Nashville, TN

February 20, 2014Davidson County, Sumner County, Wilson County, Tennessee

NWS Nashville, TN issued this tornado warning at Feb 20, 2014, 8:09 PM CST for Davidson County, Sumner County, Wilson County, Tennessee. It was in force for 36 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: Feb 20, 2014, 8:09 PM CST (02:09 UTC)
Expired: Feb 20, 2014, 8:45 PM CST
In force: 36 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Davidson County, TN, Sumner County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 23 km from the middle of the area, began a volume at 02:09 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
Feb 20, 6:49 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 2.2 hours before the alert went out and 34 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: 231 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 1039 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 346 m²/s²
0-3 km storm-relative helicity: 386 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

516 
WFUS54 KOHX 210209
TOROHX
TNC037-165-189-210245-
/O.NEW.KOHX.TO.W.0003.140221T0209Z-140221T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
809 PM CST THU FEB 20 2014

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN DAVIDSON COUNTY IN MIDDLE TENNESSEE...
  SOUTHERN SUMNER COUNTY IN MIDDLE TENNESSEE...
  NORTHWESTERN WILSON COUNTY IN MIDDLE TENNESSEE...

* UNTIL 845 PM CST

* AT 804 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
  DANGEROUS STORM WAS LOCATED NEAR HENDERSONVILLE...OR 11 MILES
  SOUTHWEST OF GALLATIN...AND MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GALLATIN...COTTONTOWN...BLEDSOE CREEK STATE PARK...CASTALIAN
  SPRINGS AND DICKERSON CHAPEL RECREATION AREA.

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

LAT...LON 3654 8640 3641 8627 3636 8627 3636 8628
      3634 8626 3630 8627 3630 8625 3633 8625
      3635 8623 3631 8617 3614 8661 3637 8677
TIME...MOT...LOC 0209Z 242DEG 43KT 3633 8656

$$

07

1 follow-up statement

651 
WWUS54 KOHX 210220
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
820 PM CST THU FEB 20 2014

TNC037-210230-
/O.CAN.KOHX.TO.W.0003.000000T0000Z-140221T0245Z/
DAVIDSON TN-
820 PM CST THU FEB 20 2014

...THE TORNADO WARNING FOR NORTHEASTERN DAVIDSON COUNTY IS
CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CST THURSDAY EVENING
FOR CENTRAL TENNESSEE. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
300 AM CST FRIDAY MORNING FOR CENTRAL TENNESSEE.

LAT...LON 3641 8627 3636 8627 3635 8628 3633 8626
      3631 8628 3630 8627 3630 8625 3633 8625
      3635 8623 3631 8617 3619 8649 3642 8667
      3654 8640
TIME...MOT...LOC 0220Z 242DEG 43KT 3639 8642

$$

TNC165-189-210245-
/O.CON.KOHX.TO.W.0003.000000T0000Z-140221T0245Z/
SUMNER TN-WILSON TN-
820 PM CST THU FEB 20 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CST FOR
NORTHWESTERN WILSON AND SOUTHERN SUMNER COUNTIES...

AT 818 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR GALLATIN...MOVING
NORTHEAST AT 50 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BLEDSOE
CREEK STATE PARK...CASTALIAN SPRINGS AND DICKERSON CHAPEL RECREATION
AREA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CST THURSDAY EVENING
FOR CENTRAL TENNESSEE. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
300 AM CST FRIDAY MORNING FOR CENTRAL TENNESSEE.

&&

LAT...LON 3641 8627 3636 8627 3635 8628 3633 8626
      3631 8628 3630 8627 3630 8625 3633 8625
      3635 8623 3631 8617 3619 8649 3642 8667
      3654 8640
TIME...MOT...LOC 0220Z 242DEG 43KT 3639 8642

$$

07

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 20, 6:34 PM CST	Severe Thunderstorm Warning	OHX	Hickman, Humphreys, Lewis, Perry	56 min
Feb 20, 6:34 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Montgomery, Robertson	26 min
Feb 20, 6:41 PM CST	Severe Thunderstorm Warning	OHX	Lawrence, Wayne	49 min
Feb 20, 6:58 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Robertson	32 min
Feb 20, 7:14 PM CST	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Humphreys	16 min
Feb 20, 7:15 PM CST	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Lewis, Marshall, Maury, Williamson	45 min
Feb 20, 7:15 PM CST	Tornado Warning	OHX	Robertson, Sumner	30 min
Feb 20, 7:25 PM CST	Severe Thunderstorm Warning	OHX	Robertson, Sumner	35 min
Feb 20, 7:28 PM CST	Severe Thunderstorm Warning	OHX	Giles, Lawrence, Lewis, Maury, Wayne	47 min
Feb 20, 7:31 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Robertson, Sumner	44 min
Feb 20, 7:56 PM CST	Tornado Warning	OHX	Davidson, Maury, Rutherford, Williamson	34 min
Feb 20, 8:07 PM CST	Severe Thunderstorm Warning	OHX	Davidson, Macon, Robertson, Rutherford, Sumner, Trousdale and 1 more	38 min
Feb 20, 8:18 PM CST	Special Weather Statement	OHX	Giles, Lawrence, Marshall, Rutherford	42 min
Feb 20, 8:23 PM CST	Severe Thunderstorm Warning	OHX	Rutherford, Wilson	37 min
Feb 20, 8:35 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Marshall, Maury, Rutherford, Williamson	25 min
Feb 20, 8:37 PM CST	Severe Thunderstorm Warning	OHX	Clay, DeKalb, Jackson, Macon, Smith, Sumner and 2 more	38 min
Feb 20, 8:52 PM CST	Special Weather Statement	OHX	Giles, Marshall	38 min
Feb 20, 9:07 PM CST	Severe Thunderstorm Warning	OHX	Giles, Marshall	38 min
Feb 20, 9:08 PM CST	Severe Thunderstorm Warning	OHX	Clay, DeKalb, Jackson, Overton, Pickett, Putnam and 2 more	37 min
Feb 20, 9:24 PM CST	Tornado Warning	OHX	Clay, Jackson, Overton	36 min
Feb 20, 9:40 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Rutherford, Warren	35 min
Feb 20, 9:41 PM CST	Severe Thunderstorm Warning	OHX	DeKalb, Putnam, White	34 min
Feb 20, 9:45 PM CST	Severe Thunderstorm Warning	OHX	DeKalb, Fentress, Overton, Pickett, Putnam, White	45 min
Feb 20, 9:47 PM CST	Tornado Warning	OHX	Clay, Overton, Pickett	13 min
Feb 20, 10:03 PM CST	Tornado Warning	OHX	Bedford, Coffee	27 min
Feb 20, 10:14 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Grundy, Van Buren, Warren	61 min
Feb 20, 10:15 PM CST	Severe Thunderstorm Warning	OHX	Cumberland, DeKalb, Putnam, White	45 min
Feb 20, 10:26 PM CST	Severe Thunderstorm Warning	OHX	Cumberland, Fentress, Overton, Pickett, Putnam	34 min
Feb 20, 10:29 PM CST	Tornado Warning	OHX	Coffee, Grundy	31 min
Feb 20, 11:19 PM CST	Special Weather Statement	OHX	Cumberland	56 min

Nearby

Tornado Warnings in Tennessee, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.