Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 73, NWS Nashville, TN

May 6, 20216 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 6, 2021, 4:27 PM CDT for 6 counties in Tennessee. It was in force for 33 min. 6 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 6, 2021, 4:27 PM CDT (21:27 UTC)
Expired: May 6, 2021, 5:00 PM CDT
In force: 33 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cheatham County, TN, Dickson County, TN, Houston County, TN, Montgomery County, TN, Robertson County, TN, Stewart County, TN

The radar

The Ft Campbell radar (KHPX), 32 km from the middle of the area, began a volume at 21:27 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.

What was reported inside it

Time	Report	Where	Remark
May 6, 4:29 PM CDT	TSTM WND DMG	2 N Clarksville, TN	FACEBOOK REPORT OF TREES DOWN AT SETTLEMENT DAYCARE.
May 6, 4:42 PM CDT	TSTM WND DMG	2 N Clarksville, TN	FACEBOOK REPORT OF TREES DOWN AT SETTLEMENT DAYCARE.
May 6, 4:48 PM CDT	TSTM WND DMG	Adams, TN	REPORTS OF TREESD DOWN ON OLD WASHINGTON ROAD.
May 6, 4:52 PM CDT	TSTM WND DMG	Port Royal, TN	RECEIVED A REPORT OF TREES DOWN AND A GUST TO 76 MPH ON A BACKYARD WEATHER STATION.
May 6, 4:56 PM CDT	TSTM WND DMG	4 S Coopertown, TN	* 1 FATAL * A LARGE TREE FELL ON A MOTORCYCLIST AT SOUTH WALKER RD AND MCMAHAN HOLLOW RD.
May 6, 5:08 PM CDT	TSTM WND DMG	Springfield, TN	TREES DOWN 200 BLOCK N MAIN STREET.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.5 hours before the alert went out and 67 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: 1719 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: -90 m²/s²
0-3 km storm-relative helicity: -71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

683 
WUUS54 KOHX 062127
SVROHX
TNC021-043-083-125-147-161-062200-
/O.NEW.KOHX.SV.W.0073.210506T2127Z-210506T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
427 PM CDT Thu May 6 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Northern Dickson County in Middle Tennessee...
  Montgomery County in Middle Tennessee...
  Southeastern Stewart County in Middle Tennessee...
  Northern Cheatham County in Middle Tennessee...
  Northeastern Houston County in Middle Tennessee...
  Western Robertson County in Middle Tennessee...

* Until 500 PM CDT.

* At 427 PM CDT, severe thunderstorms were located along a line
  extending from near Elkton to 6 miles north of McEwen, moving east
  at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Springfield, Ashland City, Erin, Clarksville, Coopertown, Guthrie,
  Tennessee Ridge, Pleasant View, Adams, Vanleer, Cedar Hill,
  Cumberland City, Slayden, Cheatham Dam, Palmyra, Woodlawn and
  Cunningham.

This includes Interstate 24 between mile markers 1 and 28.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3644 8689 3621 8716 3625 8783 3656 8758
      3664 8750 3665 8678
TIME...MOT...LOC 2127Z 283DEG 24KT 3673 8714 3621 8762 

HAIL...<.75IN
WIND...60MPH
 
$$

10

1 follow-up statement

629 
WWUS54 KOHX 062148
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
448 PM CDT Thu May 6 2021

TNC083-161-062157-
/O.CAN.KOHX.SV.W.0073.000000T0000Z-210506T2200Z/
Stewart TN-Houston TN-
448 PM CDT Thu May 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN STEWART AND
NORTHEASTERN HOUSTON COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3644 8689 3621 8716 3623 8753 3630 8752
      3664 8724 3665 8678
TIME...MOT...LOC 2147Z 283DEG 24KT 3670 8699 3618 8747 

$$

TNC021-043-125-147-062200-
/O.CON.KOHX.SV.W.0073.000000T0000Z-210506T2200Z/
Dickson TN-Montgomery TN-Cheatham TN-Robertson TN-
448 PM CDT Thu May 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR NORTHERN DICKSON...EASTERN MONTGOMERY...NORTHERN CHEATHAM AND
WESTERN ROBERTSON COUNTIES...

At 447 PM CDT, severe thunderstorms were located along a line
extending from 10 miles east of Guthrie to 9 miles northwest of
Dickson, moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Springfield, Ashland City, Clarksville, Coopertown, Pleasant View,
Adams, Vanleer, Cedar Hill, Slayden, Cheatham Dam and Cunningham.

This includes Interstate 24 between mile markers 5 and 28.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3644 8689 3621 8716 3623 8753 3630 8752
      3664 8724 3665 8678
TIME...MOT...LOC 2147Z 283DEG 24KT 3670 8699 3618 8747 

HAIL...<.75IN
WIND...60MPH
 
$$

10

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 3:44 PM CDT	Special Weather Statement	OHX	Stewart	46 min
May 6, 4:04 PM CDT	Severe Thunderstorm Warning	OHX	Montgomery, Stewart	26 min
May 6, 4:18 PM CDT	Special Weather Statement	OHX	Dickson, Houston, Humphreys	42 min
May 6, 4:35 PM CDT	Special Weather Statement	OHX	Hickman, Lewis, Perry, Wayne	40 min
May 6, 4:44 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Hickman, Houston, Humphreys, Montgomery and 3 more	31 min
May 6, 4:56 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Robertson, Sumner	34 min
May 6, 5:05 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Hickman, Lawrence, Lewis, Marshall, Maury and 2 more	40 min
May 6, 5:09 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Hickman, Rutherford, Smith and 4 more	36 min
May 6, 5:29 PM CDT	Severe Thunderstorm Warning	OHX	Macon, Sumner, Trousdale	31 min
May 6, 5:42 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Rutherford, Smith, Sumner, Trousdale, Williamson and 1 more	33 min
May 6, 5:45 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Giles, Lawrence, Marshall, Maury, Rutherford and 1 more	45 min
May 6, 6:00 PM CDT	Special Weather Statement	OHX	Macon, Trousdale	45 min
May 6, 6:13 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, Coffee, DeKalb, Jackson, Putnam, Rutherford and 4 more	47 min
May 6, 6:27 PM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, Grundy, Rutherford, Warren	48 min
May 6, 6:58 PM CDT	Special Weather Statement	OHX	Cumberland, DeKalb, Fentress, Jackson, Overton, Putnam and 3 more	47 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.