Alert archive / Tennessee / Tornado Warnings in 2017

Tornado Warning 69, NWS Memphis, TN

October 7, 2017Henry County, Weakley County, Tennessee

NWS Memphis, TN issued this tornado warning at Oct 7, 2017, 5:56 PM CDT for Henry County, Weakley County, Tennessee. It was in force for 22 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: Oct 7, 2017, 5:56 PM CDT (22:56 UTC)
Expired: Oct 7, 2017, 6:18 PM CDT
In force: 22 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Henry County, TN, Weakley County, TN

The radar

The Paducah radar (KPAH), 72 km from the middle of the area, began a volume at 22:59 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.9 hours before the alert went out and 181 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 828 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 98 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

261 
WFUS54 KMEG 072256
TORMEG
TNC079-183-072330-
/O.NEW.KMEG.TO.W.0069.171007T2256Z-171007T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
556 PM CDT SAT OCT 7 2017

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  Northeastern Weakley County in west Tennessee...
  Northwestern Henry County in western Tennessee...

* Until 630 PM CDT
    
* At 556 PM CDT, a severe thunderstorm producing a tornado was
  located over Palmersville, or 15 miles northeast of Martin, moving
  northeast 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 Weakley and northwestern Henry Counties, including the
  following locations: Brundige, Crossland and Jones Mill.

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 3638 8862 3644 8870 3650 8866 3650 8833
TIME...MOT...LOC 2256Z 237DEG 27KT 3644 8861 

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

$$

JOHNSON

2 follow-up statements

251 
WWUS54 KMEG 072307
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
607 PM CDT SAT OCT 7 2017

TNC079-183-072330-
/O.CON.KMEG.TO.W.0069.000000T0000Z-171007T2330Z/
Weakley TN-Henry TN-
607 PM CDT SAT OCT 7 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
NORTHEASTERN WEAKLEY AND NORTHWESTERN HENRY COUNTIES...
    
At 607 PM CDT, a severe thunderstorm producing a tornado was located
near Palmersville, or 15 miles southwest of Murray, moving northeast
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. 

Locations impacted include...
Crossland.

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 3643 8854 3647 8862 3650 8859 3650 8833
TIME...MOT...LOC 2307Z 233DEG 26KT 3648 8853 

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

$$

JOHNSON

745 
WWUS54 KMEG 072318
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
618 PM CDT SAT OCT 7 2017

TNC079-183-072328-
/O.CAN.KMEG.TO.W.0069.000000T0000Z-171007T2330Z/
Weakley TN-Henry TN-
618 PM CDT SAT OCT 7 2017

...THE TORNADO WARNING FOR NORTHEASTERN WEAKLEY AND NORTHWESTERN
HENRY COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

LAT...LON 3643 8854 3647 8862 3650 8859 3650 8833
TIME...MOT...LOC 2312Z 237DEG 27KT 3653 8844 

$$

JOHNSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 7, 5:44 PM CDT	Special Weather Statement	MEG	Weakley	46 min

Nearby

Tornado Warnings in Tennessee, 2017 Every tornado warning in 2017 Tornadoes 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.