Alert archive / Tennessee / Tornado Warnings in 2021

Tornado Warning 17, NWS Nashville, TN

April 28, 2021Houston County, Stewart County, Tennessee

NWS Nashville, TN issued this tornado warning at Apr 28, 2021, 7:09 PM CDT for Houston County, Stewart County, Tennessee. It was in force for 36 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: Apr 28, 2021, 7:09 PM CDT (00:09 UTC)
Expired: Apr 28, 2021, 7:45 PM CDT
In force: 36 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Houston County, TN, Stewart County, TN

The radar

The Ft Campbell radar (KHPX), 69 km from the middle of the area, began a volume at 00:08 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, 0.2 hours before the alert went out and 125 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: 389 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 925 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

As transmitted.

486 
WFUS54 KOHX 290009
TOROHX
TNC083-161-290045-
/O.NEW.KOHX.TO.W.0017.210429T0009Z-210429T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Nashville TN
709 PM CDT Wed Apr 28 2021

The National Weather Service in Nashville has issued a

* Tornado Warning for...
  Southern Stewart County in Middle Tennessee...
  Northwestern Houston County in Middle Tennessee...

* Until 745 PM CDT.
    
* At 709 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Paris Landing State Park, moving east 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 dangerous storm will be near...
  Dover and Tennessee Ridge around 745 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Houston County Airport and Cumberland City.

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 3647 8805 3649 8806 3654 8779 3641 8762
      3630 8775 3631 8796 3635 8798 3637 8800
      3639 8801 3642 8804 3645 8806
TIME...MOT...LOC 0009Z 264DEG 25KT 3639 8812 

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

$$

13

1 follow-up statement

665 
WWUS54 KOHX 290027
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
727 PM CDT Wed Apr 28 2021

TNC083-161-290045-
/O.CON.KOHX.TO.W.0017.000000T0000Z-210429T0045Z/
Stewart TN-Houston TN-
727 PM CDT Wed Apr 28 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR SOUTHERN
STEWART AND NORTHWESTERN HOUSTON COUNTIES...
    
At 726 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Paris Landing State Park, moving east 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 dangerous storm will be near...
  Dover around 745 PM CDT.
  Tennessee Ridge around 750 PM CDT.
  Erin around 800 PM CDT.

Other locations impacted by this tornadic thunderstorm include 
Houston County Airport and Cumberland City. Numerous reports of 
damage have been received from Henry County. 

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 3647 8805 3649 8806 3654 8779 3641 8762
      3630 8775 3631 8796 3635 8798 3637 8800
      3639 8801 3642 8804 3645 8806
TIME...MOT...LOC 0026Z 264DEG 25KT 3640 8797 

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

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 7:39 PM CDT	Tornado Warning	OHX	Houston, Montgomery, Stewart	24 min
Apr 29, 7:04 AM CDT	Special Weather Statement	OHX	Hickman	26 min

Nearby

Tornado Warnings in Tennessee, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.