Alert archive / Tennessee / Tornado Warnings in 2017

Tornado Warning 64, NWS Memphis, TN

August 31, 2017Hardin County, McNairy County, Tennessee

NWS Memphis, TN issued this tornado warning at Aug 31, 2017, 2:47 PM CDT for Hardin County, McNairy County, Tennessee. It was in force for 43 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, 2:47 PM CDT (19:47 UTC)
Expired
Aug 31, 2017, 3:30 PM CDT
In force
43 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Hardin County, TN, McNairy County, TN

The radar

The Columbus AFB radar (KGWX), 131 km from the middle of the area, began a volume at 19:51 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 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, 7.8 hours before the alert went out and 155 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.

491 
WFUS54 KMEG 311947
TORMEG
TNC071-109-312030-
/O.NEW.KMEG.TO.W.0064.170831T1947Z-170831T2030Z/

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

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  East central McNairy County in western Tennessee...
  Southwestern Hardin County in western Tennessee...

* Until 330 PM CDT
    
* At 247 PM CDT, a severe thunderstorm capable of producing a 
  tornado was located near Pineflat, or near J P Coleman State Park, 
  moving north 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...
  Pickwick Landing State Park and Pickwick Dam around 305 PM CDT. 
  Shiloh around 320 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Counce, Mount Vinson, New Lawton, Damon, Southside, Hamburg, Crump,
Tulu, Old Lawton and Pittsburg Landing.

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 3501 8820 3499 8820 3500 8835 3521 8850
      3526 8826 3501 8819
TIME...MOT...LOC 1947Z 157DEG 24KT 3493 8824 

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

$$
2 follow-up statements
589 
WWUS54 KMEG 312001
SVSMEG

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

TNC071-109-312030-
/O.CON.KMEG.TO.W.0064.000000T0000Z-170831T2030Z/
McNairy TN-Hardin TN-
301 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR EAST
CENTRAL MCNAIRY AND SOUTHWESTERN HARDIN COUNTIES...
    
At 301 PM CDT, a severe thunderstorm capable of producing a tornado 
was located just west of Pickwick Dam, or near Pickwick Landing 
State Park, 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...
  Shiloh around 315 PM CDT. 
  Adamsville around 330 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Counce, Mount Vinson, New Lawton, Damon, Southside, Hamburg, Crump,
Tulu, Old Lawton and Pittsburg Landing.

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 3500 8835 3521 8850 3525 8830 3503 8824
      3500 8832
TIME...MOT...LOC 2001Z 156DEG 28KT 3504 8830 

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

$$
095 
WWUS54 KMEG 312021
SVSMEG

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

TNC071-109-312030-
/O.CON.KMEG.TO.W.0064.000000T0000Z-170831T2030Z/
McNairy TN-Hardin TN-
321 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR EAST
CENTRAL MCNAIRY AND WEST CENTRAL HARDIN COUNTIES...
    
At 321 PM CDT, a severe thunderstorm capable of producing a tornado 
was located near Shiloh, or 9 miles southwest of 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 tornadic thunderstorm will remain over mainly rural areas of
east central McNairy and west central Hardin Counties, including the
following locations: Gilchrist, Mount Vinson, New Lawton, West
Shihloh, Hurley, Stantonville, Old Lawton and Pittsburg Landing.

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 3511 8842 3521 8850 3524 8835 3514 8832
TIME...MOT...LOC 2021Z 152DEG 25KT 3516 8838 

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

$$

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, 3:08 PM CDTFlash Flood WarningMEGShelby9 hr
Aug 31, 3:10 PM CDTTornado Warning Tornado observedMEGHardin, McNairy32 min
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.