Alert archive / Tennessee / Tornado Warnings in 2016

Tornado Warning 20, NWS Memphis, TN

December 17, 2016Hardeman County, Tennessee

NWS Memphis, TN issued this tornado warning at Dec 17, 2016, 4:20 PM CST for Hardeman County, Tennessee. It was in force for 8 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: Dec 17, 2016, 4:20 PM CST (22:20 UTC)
Expired: Dec 17, 2016, 4:28 PM CST
In force: 8 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Tornado: Observed
Hail: 0.75 in

County Hardeman County, TN

The radar

The Memphis radar (KNQA), 88 km from the middle of the area, began a volume at 22:21 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.

Issued	Product	Office	Lasted
Dec 17, 1:42 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Little Rock, AR (KBYH), launched 12:00Z, 10.3 hours before the alert went out and 112 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: 200 J/kg
Mixed-layer CIN: -240 J/kg
Mixed-layer LCL: 834 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 320 m²/s²
0-3 km storm-relative helicity: 327 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

744 
WFUS54 KMEG 172220
TORMEG
TNC069-172245-
/O.NEW.KMEG.TO.W.0020.161217T2220Z-161217T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
420 PM CST SAT DEC 17 2016

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  Northern Hardeman County in western Tennessee...

* Until 445 PM CST

* At 420 PM CST, a confirmed tornado was located near Cloverport, or
  near Bolivar, moving northeast at 35 mph.

  HAZARD...Damaging tornado. 

  SOURCE...Weather spotters confirmed tornado. 

  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...
  Chickasaw State Forest and Silerton around 435 PM CST. 

Other locations impacted by this tornadic thunderstorm include Vildo,
Shandy, Toone and Teague.

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 3531 8880 3526 8908 3539 8915 3543 8904
      3543 8884 3539 8884 3535 8880 3533 8879
TIME...MOT...LOC 2220Z 238DEG 32KT 3535 8903 

TORNADO...OBSERVED
HAIL...<.75IN

$$

1 follow-up statement

534 
WWUS54 KMEG 172228
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
428 PM CST SAT DEC 17 2016

TNC069-172237-
/O.CAN.KMEG.TO.W.0020.000000T0000Z-161217T2245Z/
Hardeman TN-
428 PM CST SAT DEC 17 2016

...THE TORNADO WARNING FOR NORTHERN HARDEMAN 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 900 PM CST for western
Tennessee.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Memphis.

LAT...LON 3531 8880 3526 8908 3539 8915 3543 8904
      3543 8884 3539 8884 3535 8880 3533 8879
TIME...MOT...LOC 2227Z 238DEG 32KT 3539 8896 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 17, 12:16 PM CST	Winter Weather Advisory	MEG	Benton, Carroll, Chester, Crockett, Decatur, Dyer and 15 more	18 hr
Dec 17, 3:05 PM CST	Special Weather Statement	MEG	Lake	25 min
Dec 17, 3:08 PM CST	Tornado Warning	MEG	Lake	14 min
Dec 17, 4:16 PM CST	Severe Thunderstorm Warning	MEG	Hardeman	13 min
Dec 17, 4:37 PM CST	Severe Thunderstorm Warning	MEG	Chester, Henderson, Madison	21 min
Dec 17, 5:04 PM CST	Severe Thunderstorm Warning	MEG	Lake, Obion	41 min
Dec 17, 5:27 PM CST	Severe Thunderstorm Warning	MEG	Lauderdale	48 min
Dec 17, 5:51 PM CST	Severe Thunderstorm Warning	MEG	Dyer, Lauderdale	39 min

Nearby

Tornado Warnings in Tennessee, 2016 Every tornado warning in 2016 Tornadoes in 2016

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.