Alert archive / Tennessee / Tornado Warnings in 2017

Tornado Warning 32, NWS Nashville, TN

July 5, 2017Houston County, Humphreys County, Tennessee

NWS Nashville, TN issued this tornado warning at Jul 5, 2017, 8:48 PM CDT for Houston County, Humphreys County, Tennessee. It was in force for 27 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: Jul 5, 2017, 8:48 PM CDT (01:48 UTC)
Expired: Jul 5, 2017, 9:15 PM CDT
In force: 27 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Houston County, TN, Humphreys County, TN

The radar

The Ft Campbell radar (KHPX), 71 km from the middle of the area, began a volume at 01:52 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 00:00Z, 1.8 hours before the alert went out and 110 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: 487 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 889 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted.

846 
WFUS54 KOHX 060148
TOROHX
TNC083-085-060215-
/O.NEW.KOHX.TO.W.0032.170706T0148Z-170706T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Nashville TN
848 PM CDT WED JUL 5 2017

The National Weather Service in Nashville has issued a

* Tornado Warning for...
  Central Houston County in Middle Tennessee...
  North central Humphreys County in Middle Tennessee...

* Until 915 PM CDT
    
* At 848 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles northwest of Waverly, moving northeast 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...
  Erin and Tennessee Ridge around 915 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement 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 3633 8782 3630 8763 3614 8785 3619 8794
TIME...MOT...LOC 0148Z 222DEG 22KT 3621 8785 

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

$$

19

1 follow-up statement

057 
WWUS54 KOHX 060210
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
910 PM CDT WED JUL 5 2017

TNC083-085-060219-
/O.EXP.KOHX.TO.W.0032.000000T0000Z-170706T0215Z/
Houston TN-Humphreys TN-
910 PM CDT WED JUL 5 2017

...THE TORNADO WARNING FOR CENTRAL HOUSTON AND NORTH CENTRAL
HUMPHREYS COUNTIES WILL EXPIRE AT 915 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire.  However heavy rain 
and lightning are still possible with this thunderstorm.

LAT...LON 3633 8782 3630 8763 3614 8785 3619 8794
TIME...MOT...LOC 0209Z 222DEG 22KT 3630 8775 

$$

Hurley

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 7:55 PM CDT	Special Weather Statement	OHX	Dickson, Houston, Humphreys, Perry	50 min
Jul 5, 8:03 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Humphreys, Perry	42 min
Jul 5, 8:31 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Houston, Humphreys	44 min
Jul 5, 8:43 PM CDT	Severe Thunderstorm Warning	OHX	Dickson, Hickman, Humphreys, Perry	32 min
Jul 5, 9:04 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Hickman, Maury, Williamson	41 min
Jul 5, 9:09 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Houston, Humphreys, Montgomery	36 min
Jul 5, 9:18 PM CDT	Special Weather Statement	OHX	Hickman, Lewis	42 min
Jul 5, 9:38 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Hickman, Williamson	37 min
Jul 5, 9:47 PM CDT	Special Weather Statement	OHX	Cheatham, Montgomery, Robertson	43 min
Jul 6, 12:18 AM CDT	Special Weather Statement	OHX	Williamson	27 min
Jul 6, 1:06 AM CDT	Areal Flood Advisory	OHX	Bedford, Marshall, Maury, Rutherford	114 min
Jul 6, 7:01 AM CDT	Special Weather Statement	OHX	Wayne	59 min
Jul 6, 7:56 AM CDT	Special Weather Statement	OHX	Lewis	64 min
Jul 6, 8:44 AM CDT	Special Weather Statement	OHX	Maury	31 min
Jul 6, 9:01 AM CDT	Special Weather Statement	OHX	Marshall	29 min
Jul 6, 9:15 AM CDT	Special Weather Statement	OHX	Rutherford	30 min
Jul 6, 9:28 AM CDT	Special Weather Statement	OHX	Coffee	47 min
Jul 6, 10:06 AM CDT	Special Weather Statement	OHX	Grundy	39 min
Jul 6, 10:29 AM CDT	Special Weather Statement	OHX	Van Buren	46 min
Jul 6, 4:12 PM CDT	Special Weather Statement	OHX	Clay, Jackson, Overton	48 min
Jul 6, 4:51 PM CDT	Special Weather Statement	OHX	Fentress, Overton, Pickett	39 min
Jul 6, 4:54 PM CDT	Special Weather Statement	OHX	Marshall	36 min
Jul 6, 4:59 PM CDT	Special Weather Statement	OHX	Rutherford	31 min
Jul 6, 5:26 PM CDT	Special Weather Statement	OHX	Fentress, Overton	49 min
Jul 6, 5:29 PM CDT	Special Weather Statement	OHX	Cannon, Warren	46 min
Jul 6, 5:45 PM CDT	Special Weather Statement	OHX	Bedford, Marshall	45 min
Jul 6, 6:13 PM CDT	Special Weather Statement	OHX	Putnam	47 min
Jul 6, 6:27 PM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Overton, Putnam	30 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.