Alert archive / Tennessee / Tornado Warnings in 2014

Tornado Warning 2, NWS Nashville, TN

February 20, 20144 counties in Tennessee

NWS Nashville, TN issued this tornado warning at Feb 20, 2014, 7:56 PM CST for 4 counties in Tennessee. It was in force for 34 min. 15 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: Feb 20, 2014, 7:56 PM CST (01:56 UTC)
Expired: Feb 20, 2014, 8:30 PM CST
In force: 34 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Davidson County, TN, Maury County, TN, Rutherford County, TN, Williamson County, TN

The radar

The Nashville radar (KOHX), 57 km from the middle of the area, began a volume at 01:59 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

Time	Report	Where	Remark
Feb 20, 8:00 PM CST	TSTM WND DMG	Franklin, TN	TREES WERE BLOWN DOWN ONTO SIX VEHICLES ON MAGNOLIA DRIVE
Feb 20, 8:00 PM CST	TSTM WND DMG	Franklin, TN	TWO TREES DOWN BLOCKING DEL RIO PIKE
Feb 20, 8:00 PM CST	TSTM WND DMG	Spring Hill, TN	POWER LINES DOWN ON WILLIAMSON COUNTY AND MAURY COUNTY LINE CAUSING A FIRE
Feb 20, 8:05 PM CST	TSTM WND DMG	5 Ese Franklin, TN	LARGE TREE DOWN ACROSS PATTON ROAD IN ARRINGTON
Feb 20, 8:10 PM CST	TSTM WND DMG	5 Nw Eagleville, TN	TRAINED SPOTTER REPORTED TREES DOWN ON HORTON HIGHWAY NEAR COLLEGE GROVE
Feb 20, 8:13 PM CST	TSTM WND DMG	Nolensville, TN	3 LARGE TREES DOWN AND POWER LINE DOWN ON ROCKY FORK ROAD NEAR NOLENSVILLE ELEMENTARY SCHOOL
Feb 20, 8:16 PM CST	TSTM WND DMG	4 Ne Franklin, TN	NUMEROUS TREES...TRAFFIC LIGHTS AND POWER LINES DOWN IN THE COOL SPRINGS AREA OF FRANKLIN
Feb 20, 8:17 PM CST	TSTM WND DMG	4 Ne Franklin, TN	POWER LINES DOWN IN COOL SPRINGS AT BAKERS BRIDGE AND GALLERIA
Feb 20, 8:18 PM CST	TSTM WND DMG	Spring Hill, TN	NUMEROUS TREES DOWN ON CARTERS CREEK ROAD AT WILLIAMSON CO AND MAURY CO LINE
Feb 20, 8:20 PM CST	TSTM WND DMG	Smyrna, TN	POWER LINES DOWN ON VALLEY VIEW DRIVE
Feb 20, 8:21 PM CST	TSTM WND DMG	Leipers Fork, TN	TREE DOWN ON LEIPERS CREEK ROAD IN WATER VALLEY AREA
Feb 20, 8:23 PM CST	TSTM WND DMG	Smyrna, TN	MULTIPLE TREES AND POWER LINES WERE REPORTED DOWN. ONE TREE FELL ON A HOUSE AT 208 CUMBERLAND ROAD AND ANOTHER TREE FELL ON A HOME ON CHESTNUT STREET. A POWER POLE WAS SNAPPED AT THE NATIONAL GUARD BUILDING IN SMYRNA.
Feb 20, 8:23 PM CST	TSTM WND DMG	Smyrna, TN	MULTIPLE TREES AND POWER LINES WERE REPORTED DOWN. ONE TREE FELL ON A HOUSE AT 208 CUMBERLAND ROAD. A POWER POLE WAS SNAPPED AT THE NATIONAL GUARD BUILDING IN SMYRNA.
Feb 20, 8:23 PM CST	TSTM WND DMG	Smyrna, TN	POLE DOWN ON VEHICLE ON LONGVIEW DRIVE AT OLD NASHVILLE HIGHWAY
Feb 20, 8:30 PM CST	HAIL 1	Smyrna, TN

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.

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, 1.9 hours before the alert went out and 43 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.

968 
WFUS54 KOHX 210156
TOROHX
TNC037-119-149-187-210230-
/O.NEW.KOHX.TO.W.0002.140221T0156Z-140221T0230Z/

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

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN DAVIDSON COUNTY IN MIDDLE TENNESSEE...
  NORTHEASTERN MAURY COUNTY IN MIDDLE TENNESSEE...
  WESTERN RUTHERFORD COUNTY IN MIDDLE TENNESSEE...
  WILLIAMSON COUNTY IN MIDDLE TENNESSEE...

* UNTIL 830 PM CST

* AT 750 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 7 MILES WEST OF SPRING HILL...OR 8 MILES NORTH OF
  COLUMBIA...AND MOVING EAST NORTHEAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  FRANKLIN...SPRING HILL...BRENTWOOD...NOLENSVILLE...LA VERGNE...
  SMYRNA...THOMPSONS STATION...EAGLEVILLE...TRIUNE...ROCKVALE AND
  CHRISTIANA.

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.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

LAT...LON 3569 8639 3569 8654 3570 8663 3569 8665
      3571 8668 3570 8674 3571 8676 3570 8681
      3568 8681 3567 8707 3585 8709 3596 8695
      3609 8651
TIME...MOT...LOC 0155Z 260DEG 50KT 3575 8696

$$

21

1 follow-up statement

044 
WWUS54 KOHX 210210
SVSOHX

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

TNC119-210220-
/O.CAN.KOHX.TO.W.0002.000000T0000Z-140221T0230Z/
MAURY TN-
810 PM CST THU FEB 20 2014

...THE TORNADO WARNING FOR NORTHEASTERN MAURY COUNTY IS CANCELED...

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 3580 8677 3597 8685 3607 8651 3588 8645
TIME...MOT...LOC 0210Z 251DEG 53KT 3592 8669

$$

TNC037-149-187-210230-
/O.CON.KOHX.TO.W.0002.000000T0000Z-140221T0230Z/
RUTHERFORD TN-WILLIAMSON TN-DAVIDSON TN-
810 PM CST THU FEB 20 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CST FOR
SOUTHEASTERN DAVIDSON...EASTERN WILLIAMSON AND NORTHWESTERN
RUTHERFORD COUNTIES...

AT 808 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR TRIUNE...OR 7
MILES EAST OF FRANKLIN...MOVING EAST AT 60 MPH.

THE TORNADO WILL BE NEAR...
  NOLENSVILLE BY 815 PM CST...
  SMYRNA AND LA VERGNE BY 820 PM CST...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW. IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

&&

LAT...LON 3580 8677 3597 8685 3607 8651 3588 8645
TIME...MOT...LOC 0210Z 251DEG 53KT 3592 8669

$$

ROSE

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, 8:07 PM CST	Severe Thunderstorm Warning	OHX	Davidson, Macon, Robertson, Rutherford, Sumner, Trousdale and 1 more	38 min
Feb 20, 8:09 PM CST	Tornado Warning	OHX	Davidson, Sumner, Wilson	36 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.