Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 7, NWS Nashville, TN

February 28, 20214 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Feb 28, 2021, 6:48 PM CST for 4 counties in Tennessee. It was in force for 42 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: Feb 28, 2021, 6:48 PM CST (00:48 UTC)
Expired: Feb 28, 2021, 7:30 PM CST
In force: 42 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cheatham County, TN, Davidson County, TN, Robertson County, TN, Sumner County, TN

The radar

The Nashville radar (KOHX), 31 km from the middle of the area, began a volume at 00:52 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Feb 28, 2:22 PM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.8 hours before the alert went out and 44 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: 419 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 979 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 220 m²/s²
0-3 km storm-relative helicity: 278 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

As transmitted.

808 
WUUS54 KOHX 010048
SVROHX
TNC021-037-147-165-010130-
/O.NEW.KOHX.SV.W.0007.210301T0048Z-210301T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
648 PM CST Sun Feb 28 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  North central Davidson County in Middle Tennessee...
  Sumner County in Middle Tennessee...
  Northeastern Cheatham County in Middle Tennessee...
  Central Robertson County in Middle Tennessee...

* Until 730 PM CST.

* At 647 PM CST, a severe thunderstorm was located near Springfield,
  moving east at 55 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Gallatin, Springfield, Hendersonville, Goodlettsville, White House,
  Millersville, Greenbrier, Coopertown, Westmoreland, Ridgetop, Cross
  Plains, Portland, Pleasant View, Orlinda, Mitchellville, Black
  Jack, Bethpage, Oak Grove, Bledsoe Creek State Park and Cottontown.

This includes the following highways...
 Interstate 65 between mile markers 99 and 121.
 Interstate 24 between mile markers 25 and 31.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM CST for Middle
Tennessee.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3665 8635 3664 8623 3634 8633 3634 8635
      3636 8636 3636 8637 3634 8638 3634 8705
      3654 8696 3664 8657 3663 8656 3664 8655
      3664 8654 3665 8651
TIME...MOT...LOC 0047Z 258DEG 49KT 3644 8689 

HAIL...0.75IN
WIND...60MPH
 
$$

Barnwell

1 follow-up statement

007 
WWUS54 KOHX 010103
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
703 PM CST Sun Feb 28 2021

TNC021-037-147-010113-
/O.CAN.KOHX.SV.W.0007.000000T0000Z-210301T0130Z/
Davidson TN-Cheatham TN-Robertson TN-
703 PM CST Sun Feb 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL DAVIDSON...
NORTHEASTERN CHEATHAM AND CENTRAL ROBERTSON COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 1000 PM CST for Middle
Tennessee.

LAT...LON 3664 8623 3634 8633 3634 8635 3636 8636
      3636 8637 3634 8638 3635 8668 3661 8658
      3663 8656 3665 8651 3665 8635
TIME...MOT...LOC 0103Z 258DEG 54KT 3649 8657 

$$

TNC165-010130-
/O.CON.KOHX.SV.W.0007.000000T0000Z-210301T0130Z/
Sumner TN-
703 PM CST Sun Feb 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CST
FOR SUMNER COUNTY...

At 703 PM CST, a severe thunderstorm was located near White House, or
9 miles northwest of Gallatin, moving east at 60 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Gallatin, Hendersonville, Goodlettsville, White House, Westmoreland,
Portland, Mitchellville, Cottontown, Bethpage, Oak Grove and Bledsoe
Creek State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM CST for Middle
Tennessee.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3664 8623 3634 8633 3634 8635 3636 8636
      3636 8637 3634 8638 3635 8668 3661 8658
      3663 8656 3665 8651 3665 8635
TIME...MOT...LOC 0103Z 258DEG 54KT 3649 8657 

HAIL...0.75IN
WIND...60MPH
 
$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 6:01 PM CST	Severe Thunderstorm Warning	OHX	Dickson, Houston, Montgomery	29 min
Feb 28, 6:23 PM CST	Special Weather Statement	OHX	Cheatham	37 min
Feb 28, 6:25 PM CST	Special Weather Statement	OHX	Houston, Humphreys	35 min
Feb 28, 6:30 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Montgomery, Robertson	30 min
Feb 28, 6:40 PM CST	Severe Thunderstorm Warning	OHX	Dickson, Houston, Humphreys, Montgomery	35 min
Feb 28, 6:42 PM CST	Flash Flood Warning	OHX	Cheatham, Davidson, Dickson, Houston, Humphreys, Montgomery and 2 more	5 hr
Feb 28, 6:47 PM CST	Tornado Warning	OHX	Dickson, Humphreys	13 min
Feb 28, 7:06 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Montgomery, Robertson	24 min
Feb 28, 7:15 PM CST	Severe Thunderstorm Warning	OHX	Macon, Robertson, Sumner, Trousdale	30 min
Feb 28, 7:24 PM CST	Flash Flood Warning	OHX	Dickson, Hickman, Humphreys, Perry	3 hr
Feb 28, 7:26 PM CST	Flash Flood Warning	OHX	Cheatham, Davidson, Macon, Smith, Sumner, Trousdale and 2 more	4 hr
Feb 28, 7:32 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Robertson, Sumner, Williamson, Wilson	43 min
Feb 28, 7:39 PM CST	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon	36 min
Feb 28, 8:05 PM CST	Severe Thunderstorm Warning	OHX	Smith, Sumner, Trousdale, Wilson	25 min
Feb 28, 8:16 PM CST	Flash Flood Warning	OHX	Clay, Jackson, Overton, Pickett	3 hr
Feb 28, 8:22 PM CST	Special Weather Statement	OHX	Rutherford, Wilson	23 min
Feb 28, 8:23 PM CST	Flash Flood Warning	OHX	Davidson, Maury, Rutherford, Smith, Williamson, Wilson	3 hr
Feb 28, 8:39 PM CST	Special Weather Statement	OHX	Fentress, Overton, Pickett, Putnam	36 min
Feb 28, 8:44 PM CST	River Flood Advisory	OHX	Cheatham, Montgomery	3 days
Feb 28, 9:35 PM CST	River Flood Advisory	OHX	Davidson, Sumner, Wilson	22 days
Feb 28, 9:38 PM CST	River Flood Advisory	OHX	Houston, Montgomery, Stewart	8 hr
Feb 28, 9:54 PM CST	Special Weather Statement	OHX	Bedford, Coffee	66 min
Feb 28, 11:05 PM CST	River Flood Advisory	OHX	Cheatham	3 hr
Feb 28, 11:09 PM CST	Areal Flood Advisory	OHX	Houston, Humphreys, Montgomery, Robertson, Stewart	3 hr
Feb 28, 11:55 PM CST	Areal Flood Advisory	OHX	Cheatham, Davidson, Dickson, Houston, Humphreys, Montgomery and 2 more	3 hr
Mar 1, 12:17 AM CST	River Flood Advisory	OHX	Hickman	26 hr
Mar 1, 12:17 AM CST	River Flood Advisory	OHX	Humphreys	4 days
Mar 1, 12:17 AM CST	River Flood Advisory	OHX	Perry	44 hr
Mar 1, 12:17 AM CST	River Flood Advisory	OHX	Montgomery, Robertson	4 hr
Mar 1, 12:43 AM CST	River Flood Advisory	OHX	Davidson	115 min
Mar 1, 2:13 AM CST	River Flood Advisory	OHX	Cheatham	7 hr
Mar 1, 2:15 AM CST	River Flood Advisory	OHX	Sumner, Trousdale, Wilson	42 hr
Mar 1, 2:15 AM CST	River Flood Advisory	OHX	Davidson	18 hr
Mar 1, 2:40 AM CST	River Flood Advisory	OHX	Hickman	12 hr
Mar 1, 3:44 AM CST	River Flood Advisory	OHX	Bedford	6 hr
Mar 1, 4:14 AM CST	River Flood Warning	OHX	Montgomery, Robertson	38 hr
Mar 1, 5:27 AM CST	River Flood Warning	OHX	Stewart	32 hr
Mar 1, 9:44 AM CST	River Flood Advisory	OHX	Giles	26 hr
Mar 1, 10:06 AM CST	River Flood Advisory	OHX	Lawrence	20 hr
Mar 1, 10:28 AM CST	River Flood Warning	OHX	Montgomery	32 hr
Mar 1, 3:08 PM CST	River Flood Advisory	OHX	Cheatham, Davidson, Williamson	21 hr

Nearby

Severe Thunderstorm Warnings in Tennessee, 2021 Every severe thunderstorm warning 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.