Alert archive / Tennessee / Tornado Warnings in 2017

Tornado Warning 67, NWS Memphis, TN

August 31, 2017Chester County, McNairy County, Tennessee

NWS Memphis, TN issued this tornado warning at Aug 31, 2017, 3:26 PM CDT for Chester County, McNairy County, Tennessee. It was in force for 25 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, 3:26 PM CDT (20:26 UTC)
Expired
Aug 31, 2017, 3:51 PM CDT
In force
25 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Chester County, TN, McNairy County, TN

The radar

The Memphis radar (KNQA), 126 km from the middle of the area, began a volume at 20:29 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, 8.4 hours before the alert went out and 150 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.

899 
WFUS54 KMEG 312026
TORMEG
TNC023-109-312115-
/O.NEW.KMEG.TO.W.0067.170831T2026Z-170831T2115Z/

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

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  Northeastern McNairy County in western Tennessee...
  Chester County in western Tennessee...

* Until 415 PM CDT
    
* At 326 PM CDT, a severe thunderstorm capable of producing a 
  tornado was located near Adamsville, or 10 miles east of Selmer, 
  moving northwest at 40 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...
  Adamsville around 340 PM CDT. 
  Jacks Creek around 355 PM CDT. 
  Henderson around 400 PM CDT. 
  Mifflin around 405 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Hickory Flats, Gilchrist, Roby, New Lawton, Martin Camp,
Milledgeville, Cabo, Good Hope, Finger and Enville.

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 3540 8836 3532 8837 3522 8837 3518 8850
      3547 8872 3549 8867 3557 8861 3559 8859
      3558 8856 3554 8854 3551 8850 3548 8841
      3549 8836 3540 8835
TIME...MOT...LOC 2026Z 150DEG 34KT 3519 8841 

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

$$
2 follow-up statements
977 
WWUS54 KMEG 312044
SVSMEG

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

TNC109-312054-
/O.CAN.KMEG.TO.W.0067.000000T0000Z-170831T2115Z/
McNairy TN-
344 PM CDT THU AUG 31 2017

...THE TORNADO WARNING FOR NORTHEASTERN MCNAIRY 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 3538 8851 3539 8851 3538 8856 3537 8857
      3538 8858 3536 8863 3547 8872 3549 8867
      3559 8859 3558 8856 3554 8854 3551 8850
      3548 8841 3549 8836 3540 8836
TIME...MOT...LOC 2044Z 147DEG 50KT 3542 8859 

$$

TNC023-312115-
/O.CON.KMEG.TO.W.0067.000000T0000Z-170831T2115Z/
Chester TN-
344 PM CDT THU AUG 31 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR CENTRAL
CHESTER COUNTY...
    
At 344 PM CDT, a severe thunderstorm capable of producing a tornado 
was located near Henderson, moving northwest at 55 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...
  Mifflin around 350 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Cabo,
Roby and Enville.

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 3538 8851 3539 8851 3538 8856 3537 8857
      3538 8858 3536 8863 3547 8872 3549 8867
      3559 8859 3558 8856 3554 8854 3551 8850
      3548 8841 3549 8836 3540 8836
TIME...MOT...LOC 2044Z 147DEG 50KT 3542 8859 

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

$$
353 
WWUS54 KMEG 312051
SVSMEG

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

TNC023-312101-
/O.CAN.KMEG.TO.W.0067.000000T0000Z-170831T2115Z/
Chester TN-
351 PM CDT THU AUG 31 2017

...THE TORNADO WARNING FOR CENTRAL CHESTER COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and is no longer producing a tornado. Therefore, the warning
has been cancelled.

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

LAT...LON 3538 8851 3539 8851 3538 8856 3537 8857
      3538 8858 3536 8863 3547 8872 3549 8867
      3559 8859 3558 8856 3554 8854 3551 8850
      3548 8841 3549 8836 3540 8836
TIME...MOT...LOC 2050Z 150DEG 34KT 3548 8863 

$$

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, 3:10 PM CDTTornado Warning Tornado observedMEGHardin, McNairy32 min
Aug 31, 3:23 PM CDTTornado WarningMEGDecatur52 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.