Alert archive / Tennessee / Tornado Warnings in 2017

Tornado Warning 36, NWS Nashville, TN

August 31, 2017Lewis County, Maury County, Tennessee

NWS Nashville, TN issued this tornado warning at Aug 31, 2017, 5:13 PM CDT for Lewis County, Maury County, Tennessee. It was in force for 32 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
Aug 31, 2017, 5:13 PM CDT (22:13 UTC)
Expired
Aug 31, 2017, 5:45 PM CDT
In force
32 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Lewis County, TN, Maury County, TN

The radar

The Nashville radar (KOHX), 93 km from the middle of the area, began a volume at 22:17 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

TimeReportWhereRemark
Aug 31, 5:15 PM CDTTORNADO3 Nw Mount Pleasant, TN7 POWER POLES DOWN ALONG WITH TREES. TDS OBSERVED ON RADAR AT TIME OF REPORT.
Aug 31, 5:20 PM CDTTORNADO2 W Mount Pleasant, TNNWS STORM SURVEY FOUND AN EF0 TORNADO. PATH LENGTH WAS 1.5 MILES...WIDTH 50 YARDS. PEAK WIND 75 MPH.

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, 10.2 hours before the alert went out and 82 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-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2017-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 198 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2017-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

556 
WFUS54 KOHX 312213
TOROHX
TNC101-119-312245-
/O.NEW.KOHX.TO.W.0036.170831T2213Z-170831T2245Z/

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

The National Weather Service in Nashville has issued a

* Tornado Warning for...
  Northeastern Lewis County in Middle Tennessee...
  Southwestern Maury County in Middle Tennessee...

* Until 545 PM CDT
    
* At 513 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Mount Pleasant, or 12 miles southwest of Columbia,
  moving northwest at 30 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
  northeastern Lewis and southwestern Maury Counties, including the
  following locations: Williamsport and Hampshire.

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 3562 8743 3566 8736 3566 8732 3567 8732
      3570 8730 3570 8726 3571 8725 3572 8726
      3572 8724 3573 8723 3550 8717 3548 8724
TIME...MOT...LOC 2213Z 150DEG 24KT 3553 8724 

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

$$

Whitehead
1 follow-up statement
466 
WWUS54 KOHX 312223
SVSOHX

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

TNC101-119-312245-
/O.CON.KOHX.TO.W.0036.000000T0000Z-170831T2245Z/
Lewis TN-Maury TN-
523 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
NORTHEASTERN LEWIS AND WEST CENTRAL MAURY COUNTIES...
        
At 523 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Mount Pleasant, or 12 miles west of Columbia, moving
northwest at 25 mph.

HAZARD...Tornado. 

SOURCE...Weather spotters reported a funnel cloud. 

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. 

Locations impacted include...
Mount Pleasant and Hampshire. 

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 3562 8743 3566 8736 3566 8732 3567 8732
      3570 8730 3570 8726 3571 8725 3572 8726
      3572 8724 3573 8723 3555 8719 3550 8727
TIME...MOT...LOC 2223Z 154DEG 22KT 3558 8726 

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

$$

Whitehead

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 4:24 PM CDTTornado WarningOHXLawrence, Wayne21 min
Aug 31, 4:26 PM CDTTornado WarningOHXPerry19 min
Aug 31, 4:43 PM CDTTornado WarningOHXLawrence, Lewis, Maury32 min
Aug 31, 5:44 PM CDTTornado WarningOHXHickman, Lewis, Maury31 min
Aug 31, 5:57 PM CDTTornado WarningOHXDavidson33 min
Aug 31, 6:17 PM CDTAreal Flood AdvisoryOHXDavidson118 min
Aug 31, 6:37 PM CDTFlash Flood WarningOHXDavidson, Robertson7 hr
Aug 31, 6:44 PM CDTTornado WarningOHXDavidson, Robertson16 min

Nearby

Tornado Warnings in Tennessee, 2017Every tornado warning in 2017Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.