Alert archive / Tennessee / Tornado Warnings in 2017

Tornado Warning 33, NWS Nashville, TN

August 31, 2017Lawrence County, Wayne County, Tennessee

NWS Nashville, TN issued this tornado warning at Aug 31, 2017, 4:24 PM CDT for Lawrence County, Wayne County, Tennessee. It was in force for 21 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: Aug 31, 2017, 4:24 PM CDT (21:24 UTC)
Expired: Aug 31, 2017, 4:45 PM CDT
In force: 21 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Lawrence County, TN, Wayne County, TN

The radar

The Nashville radar (KOHX), 131 km from the middle of the area, began a volume at 21:23 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.4 hours before the alert went out and 119 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: 198 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 462 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

723 
WFUS54 KOHX 312124
TOROHX
TNC099-181-312145-
/O.NEW.KOHX.TO.W.0033.170831T2124Z-170831T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Nashville TN
424 PM CDT THU AUG 31 2017

The National Weather Service in Nashville has issued a

* Tornado Warning for...
  East central Wayne County in Middle Tennessee...
  Northwestern Lawrence County in Middle Tennessee...

* Until 445 PM CDT
    
* At 424 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles west of Lawrenceburg, moving northwest at 20
  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 tornadic thunderstorm will remain over mainly rural areas of
  east central Wayne and northwestern Lawrence Counties.

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 3537 8770 3540 8758 3540 8752 3541 8751
      3541 8748 3542 8748 3542 8745 3543 8745
      3523 8738 3519 8750
TIME...MOT...LOC 2124Z 152DEG 19KT 3526 8749 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Whitehead

1 follow-up statement

585 
WWUS54 KOHX 312136
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
436 PM CDT THU AUG 31 2017

TNC099-181-312145-
/O.CON.KOHX.TO.W.0033.000000T0000Z-170831T2145Z/
Wayne TN-Lawrence TN-
436 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR EAST
CENTRAL WAYNE AND NORTHWESTERN LAWRENCE COUNTIES...
    
At 436 PM CDT, a severe thunderstorm capable of producing a tornado
was located 11 miles northwest of Lawrenceburg, moving northwest at
20 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 tornadic thunderstorm will remain over mainly rural areas of
east central Wayne and northwestern Lawrence Counties.

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 3537 8770 3540 8758 3540 8752 3541 8751
      3541 8748 3542 8748 3542 8745 3543 8745
      3530 8744 3528 8752
TIME...MOT...LOC 2136Z 152DEG 19KT 3531 8752 

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

$$

Whitehead

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 31, 4:26 PM CDT	Tornado Warning	OHX	Perry	19 min
Aug 31, 4:43 PM CDT	Tornado Warning	OHX	Lawrence, Lewis, Maury	32 min
Aug 31, 5:13 PM CDT	Tornado Warning	OHX	Lewis, Maury	32 min
Aug 31, 5:44 PM CDT	Tornado Warning	OHX	Hickman, Lewis, Maury	31 min
Aug 31, 5:57 PM CDT	Tornado Warning	OHX	Davidson	33 min
Aug 31, 6:17 PM CDT	Areal Flood Advisory	OHX	Davidson	118 min
Aug 31, 6:37 PM CDT	Flash Flood Warning	OHX	Davidson, Robertson	7 hr
Aug 31, 6:44 PM CDT	Tornado Warning	OHX	Davidson, Robertson	16 min

Nearby

Tornado Warnings in Tennessee, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.