Alert archive / Tennessee / Tornado Warnings in 2017

Tornado Warning 65, NWS Memphis, TN

August 31, 2017Hardin County, McNairy County, Tennessee

NWS Memphis, TN issued this tornado warning at Aug 31, 2017, 3:10 PM CDT for Hardin County, McNairy County, Tennessee. It was in force for 32 min. 3 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, 3:10 PM CDT (20:10 UTC)
Expired
Aug 31, 2017, 3:42 PM CDT
In force
32 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Tornado
Observed
Hail
0.0 in

Counties Hardin County, TN, McNairy County, TN

The radar

The Memphis radar (KNQA), 140 km from the middle of the area, began a volume at 20:10 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, 3:16 PM CDTTORNADO5 Nw Savannah, TNBRIEF TORNADO ALONG COFFEE LANDING ROAD. A SHED WAS DESTROYED.
Aug 31, 3:30 PM CDTNON-TSTM WND DMGCoffee Landing, TNONE SHED WAS DESTROYED.
Aug 31, 3:30 PM CDTNON-TSTM WND DMGCoffee Landing, TNSHED DESTROYED. POSSIBLE TORNADO.

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.

IssuedProductOfficeLasted
Aug 31, 11:13 AM CDTTornado WatchSPC11 hr

The nearest sounding before it

Little Rock, AR (KBYH), launched 12:00Z, 8.2 hours before the alert went out and 158 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, Little Rock, AR at 12:00Z on 2017-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 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, Little Rock, AR at 12:00Z on 2017-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.1939Sfc1 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
20 J/kg
Mixed-layer CIN
-77 J/kg
Mixed-layer LCL
525 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

863 
WFUS54 KMEG 312010
TORMEG
TNC071-109-312100-
/O.NEW.KMEG.TO.W.0065.170831T2010Z-170831T2100Z/

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

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  Northeastern McNairy County in western Tennessee...
  Northwestern Hardin County in western Tennessee...

* Until 400 PM CDT

* At 309 PM CDT, a confirmed tornado was located over Savannah,
  moving north at 30 mph.

  HAZARD...Damaging tornado. 

  SOURCE...Weather spotters confirmed tornado just west Savannah on 
           Coffee Landing Road. Take cover immediately as this is a 
           very dangerous storm! 

  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. 

* The tornado will be near...
  Morris Chapel around 320 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Saltillo, Five Forks, Milledgeville, Right, Walkertown, Crump,
Sibley, Phillips, Bucktown and Cerro Gordo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
storm shelter 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 3521 8813 3514 8835 3537 8848 3537 8847
      3538 8846 3538 8839 3537 8838 3538 8836
      3540 8835 3542 8823 3539 8820
TIME...MOT...LOC 2009Z 157DEG 28KT 3525 8827 

TORNADO...OBSERVED
HAIL...0.00IN

$$
3 follow-up statements
685 
WWUS54 KMEG 312020
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
320 PM CDT THU AUG 31 2017

TNC071-109-312100-
/O.CON.KMEG.TO.W.0065.000000T0000Z-170831T2100Z/
McNairy TN-Hardin TN-
320 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR
NORTHEASTERN MCNAIRY AND NORTHWESTERN HARDIN COUNTIES...
    
At 319 PM CDT, a severe thunderstorm producing a tornado was located
over Morris Chapel, or near Savannah, 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 dangerous storm will be near...
  Morris Chapel around 325 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Right,
Crump, Sibley, Milledgeville, Coffee Landing and Hinkle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter 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 3526 8823 3523 8834 3537 8848 3537 8847
      3538 8846 3538 8839 3537 8838 3538 8836
      3540 8835 3541 8827
TIME...MOT...LOC 2019Z 150DEG 24KT 3528 8832 

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

$$
779 
WWUS54 KMEG 312038
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
338 PM CDT THU AUG 31 2017

TNC071-312048-
/O.CAN.KMEG.TO.W.0065.000000T0000Z-170831T2100Z/
Hardin TN-
338 PM CDT THU AUG 31 2017

...THE TORNADO WARNING FOR NORTHWESTERN HARDIN COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 800 PM CDT for western
Tennessee.

LAT...LON 3534 8838 3529 8837 3526 8837 3537 8848
      3537 8847 3538 8846 3538 8839 3537 8838
      3538 8836
TIME...MOT...LOC 2038Z 157DEG 28KT 3542 8839 

$$

TNC109-312100-
/O.CON.KMEG.TO.W.0065.000000T0000Z-170831T2100Z/
McNairy TN-
338 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR
NORTHEASTERN MCNAIRY COUNTY...
    
At 338 PM CDT, a severe thunderstorm capable of producing a tornado 
was located near Sardis, or 14 miles east of Henderson, 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 McNairy County, including the following locations:
Milledgeville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter 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 3534 8838 3529 8837 3526 8837 3537 8848
      3537 8847 3538 8846 3538 8839 3537 8838
      3538 8836
TIME...MOT...LOC 2038Z 157DEG 28KT 3542 8839 

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

$$
160 
WWUS54 KMEG 312042
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
342 PM CDT THU AUG 31 2017

TNC109-312052-
/O.CAN.KMEG.TO.W.0065.000000T0000Z-170831T2100Z/
McNairy TN-
342 PM CDT THU AUG 31 2017

...THE TORNADO WARNING FOR NORTHEASTERN MCNAIRY COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

A tornado watch remains in effect until 800 PM CDT for western
Tennessee.

LAT...LON 3534 8838 3529 8837 3526 8837 3537 8848
      3537 8847 3538 8846 3538 8839 3537 8838
      3538 8836
TIME...MOT...LOC 2041Z 157DEG 28KT 3545 8841 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 9:13 PM CDTRiver Flood WarningMEGHardeman62 hr
Aug 31, 8:22 AM CDTFlash Flood WarningMEGDyer, Lauderdale3 hr
Aug 31, 12:01 PM CDTTornado WarningMEGFayette44 min
Aug 31, 12:03 PM CDTTornado WarningMEGFayette, Hardeman42 min
Aug 31, 12:43 PM CDTTornado WarningMEGFayette, Hardeman47 min
Aug 31, 12:49 PM CDTTornado WarningMEGShelby41 min
Aug 31, 1:24 PM CDTFlash Flood WarningMEGShelby3 hr
Aug 31, 1:49 PM CDTTornado WarningMEGFayette, Hardeman41 min
Aug 31, 2:36 PM CDTFlash Flood WarningMEGFayette, Hardeman9 hr
Aug 31, 2:47 PM CDTTornado WarningMEGHardin, McNairy43 min
Aug 31, 3:08 PM CDTFlash Flood WarningMEGShelby9 hr
Aug 31, 3:23 PM CDTTornado WarningMEGDecatur52 min
Aug 31, 3:26 PM CDTTornado WarningMEGChester, McNairy25 min
Aug 31, 3:29 PM CDTTornado WarningMEGHardeman16 min
Aug 31, 4:43 PM CDTFlash Flood WarningMEGShelby6 hr
Aug 31, 5:21 PM CDTFlash Flood WarningMEGChester, Fayette, Hardeman, Hardin, Haywood, Henderson and 3 more6 hr
Aug 31, 6:08 PM CDTFlash Flood WarningMEGBenton, Carroll, Chester, Decatur, Hardin, Henderson and 1 more6 hr

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.