Alert archive / Tennessee / Tornado Warnings in 2008

Tornado Warning 31, NWS Nashville, TN

March 19, 2008Cannon County, DeKalb County, Tennessee

NWS Nashville, TN issued this tornado warning at Mar 19, 2008, 2:01 PM CDT for Cannon County, DeKalb County, Tennessee. It was in force for 29 min. 2 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: Mar 19, 2008, 2:01 PM CDT (19:01 UTC)
Expired: Mar 19, 2008, 2:30 PM CDT
In force: 29 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon

Counties Cannon County, TN, DeKalb County, TN

The radar

The Nashville radar (KOHX), 75 km from the middle of the area, began a volume at 19:01 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
Mar 19, 2:26 PM CDT	TSTM WND DMG	7 E Woodbury, TN	NEAR SHORT MTN. TREES BLOWN DOWN. OUT BUILDINGS COLLAPSED. SOME HOMES DAMAGED
Mar 19, 2:35 PM CDT	TSTM WND DMG	Smithville, TN	TREES BLOWN DOWN IN SEVERAL LOCATIONS ACROSS DEKALB COUNTY.

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

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.0 hours before the alert went out and 72 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 518 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 623 m²/s²
0-3 km storm-relative helicity: 803 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KOHX 191901
TOROHX
TNC015-041-191930-
/O.NEW.KOHX.TO.W.0031.080319T1901Z-080319T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
201 PM CDT WED MAR 19 2008

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  CANNON COUNTY IN TENNESSEE...
  THIS INCLUDES THE CITY OF WOODBURY...
  DEKALB COUNTY IN TENNESSEE...
  THIS INCLUDES THE CITY OF SMITHVILLE...

* UNTIL 230 PM CDT

* AT 155 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR WOODBURY...
  MOVING NORTHEAST AT 50 MPH.

* THE TORNADO WILL BE NEAR...
  SMITHVILLE BY 220 PM CDT...

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 800 PM CDT WEDNESDAY EVENING
FOR MIDDLE TENNESSEE.

LAT...LON 3600 8562 3599 8565 3588 8566 3584 8578
      3586 8584 3583 8591 3578 8596 3571 8613
      3581 8619 3591 8615 3609 8571
TIME...MOT...LOC 1901Z 245DEG 45KT 3583 8608

$$

JLM

1 follow-up statement

000 
WWUS54 KOHX 191920
SVSOHX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
220 PM CDT WED MAR 19 2008

TNC015-041-191930-
/O.CON.KOHX.TO.W.0031.000000T0000Z-080319T1930Z/
CANNON TN-DEKALB TN-
218 PM CDT WED MAR 19 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR DEKALB
AND CANNON COUNTIES...

AT 217 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 8 MILES SOUTHWEST OF
SMITHVILLE...MOVING NORTHEAST AT 50 MPH.

THE TORNADO WILL BE NEAR...
  SMITHVILLE IN CENTRAL DEKALB COUNTY AT 225 PM CDT
  CENTER HILL LAKE AND RURAL EASTERN DEKALB COUNTY AT 230 PM CDT

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT WEDNESDAY EVENING
FOR CENTRAL TENNESSEE.

LAT...LON 3600 8562 3599 8565 3588 8566 3584 8578
      3586 8584 3583 8591 3578 8596 3571 8613
      3581 8619 3591 8615 3609 8571
TIME...MOT...LOC 1917Z 245DEG 45KT 3591 8585

$$

LAROSA

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 19, 2:27 AM CDT	Severe Thunderstorm Warning	OHX	Benton, Houston, Stewart	48 min
Mar 19, 2:57 AM CDT	Severe Thunderstorm Warning	OHX	Houston, Montgomery, Stewart	33 min
Mar 19, 10:15 AM CDT	River Flood Advisory	OHX	Perry	24 hr
Mar 19, 10:15 AM CDT	River Flood Advisory	OHX	Montgomery, Robertson	24 hr
Mar 19, 11:25 AM CDT	Areal Flood Advisory	OHX	Davidson, Hickman, Macon, Smith, Sumner, Trousdale and 2 more	115 days
Mar 19, 1:37 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Overton, Pickett, Putnam	38 min
Mar 19, 2:15 PM CDT	Tornado Warning	OHX	Cannon, DeKalb, Warren, White	30 min
Mar 19, 2:34 PM CDT	Severe Thunderstorm Warning	OHX	Fentress, Overton, Putnam	26 min
Mar 19, 2:45 PM CDT	River Flood Warning	OHX	Cheatham	13 hr
Mar 19, 2:49 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Van Buren, White	26 min
Mar 19, 2:52 PM CDT	Severe Thunderstorm Warning	OHX	Fentress, Pickett	23 min
Mar 19, 2:57 PM CDT	Severe Thunderstorm Warning	OHX	Grundy, Van Buren	33 min
Mar 19, 3:18 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland	27 min

Nearby

Tornado Warnings in Tennessee, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.