Alert archive / Tennessee / Tornado Warnings in 2017

Tornado Warning 50, NWS Memphis, TN

August 31, 2017Fayette County, Hardeman County, Tennessee

NWS Memphis, TN issued this tornado warning at Aug 31, 2017, 12:43 PM CDT for Fayette County, Hardeman County, Tennessee. It was in force for 47 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, 12:43 PM CDT (17:43 UTC)
Expired
Aug 31, 2017, 1:30 PM CDT
In force
47 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Fayette County, TN, Hardeman County, TN

The radar

The Memphis radar (KNQA), 65 km from the middle of the area, began a volume at 17:44 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, 5.7 hours before the alert went out and 73 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.

493 
WFUS54 KMEG 311743
TORMEG
TNC047-069-311830-
/O.NEW.KMEG.TO.W.0050.170831T1743Z-170831T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
1243 PM CDT THU AUG 31 2017

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  Southeastern Fayette County in western Tennessee...
  Southwestern Hardeman County in western Tennessee...

* Until 130 PM CDT
    
* At 1243 PM CDT, a severe thunderstorm producing a tornado was
  located near Lagrange, or 17 miles south of Bolivar, moving
  northwest at 25 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...
  Lagrange around 1255 PM CDT. 
  Somerville around 130 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Williston, Saulsbury, Grand Junction, Macon, La Grange,
Pattersonville, Powers and Forty Five.

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 8902 3500 8922 3516 8956 3532 8929
TIME...MOT...LOC 1743Z 142DEG 20KT 3502 8911 

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

$$
1 follow-up statement
319 
WWUS54 KMEG 311824 RRA
SVSMEG

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

TNC047-069-311834-
/O.EXP.KMEG.TO.W.0050.000000T0000Z-170831T1830Z/
Fayette TN-Hardeman TN-
124 PM CDT THU AUG 31 2017

...THE TORNADO WARNING FOR SOUTHEASTERN FAYETTE AND SOUTHWESTERN
HARDEMAN COUNTIES WILL EXPIRE AT 130 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and is no longer producing a tornado. Therefore, the warning
will be allowed to expire.

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

LAT...LON 3500 8902 3500 8922 3516 8956 3532 8929
TIME...MOT...LOC 1824Z 142DEG 20KT 3520 8928 

$$

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, 12:49 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, 3:26 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.