Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 62, NWS Nashville, TN

May 4, 2021Houston County, Humphreys County, Stewart County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 4, 2021, 4:12 AM CDT for Houston County, Humphreys County, Stewart County, Tennessee. It was in force for 48 min. 1 report 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 4, 2021, 4:12 AM CDT (09:12 UTC)
Expired: May 4, 2021, 5:00 AM CDT
In force: 48 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Houston County, TN, Humphreys County, TN, Stewart County, TN

The radar

The Ft Campbell radar (KHPX), 66 km from the middle of the area, began a volume at 09:12 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 4, 4:47 AM CDT	TSTM WND DMG	Dover, TN	NUMEROUS TREES DOWN AND POWER OUTAGES ACROSS STEWART COUNTY

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

The watch it was issued in

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

Issued	Product	Office	Lasted
May 4, 1:41 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 9.2 hours before the alert went out and 123 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: 2263 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1050 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 7.6

Open this sounding in Storm Lab

The text

As transmitted.

688 
WUUS54 KOHX 040912
SVROHX
TNC083-085-161-041000-
/O.NEW.KOHX.SV.W.0062.210504T0912Z-210504T1000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
412 AM CDT Tue May 4 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Stewart County in Middle Tennessee...
  Houston County in Middle Tennessee...
  Northeastern Humphreys County in Middle Tennessee...

* Until 500 AM CDT.

* At 412 AM CDT, severe thunderstorms were located along a line 
  extending from 8 miles northwest of Murray to Paris, 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...
  Dover, Erin, Tennessee Ridge, Big Rock, Cumberland City, Land
  Between The Lakes, Houston County Airport and Indian Mound.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3666 8785 3663 8785 3664 8765 3615 8756
      3615 8792 3617 8792 3622 8795 3626 8794
      3631 8796 3645 8806 3647 8805 3649 8806
      3652 8804 3656 8803 3668 8807
TIME...MOT...LOC 0912Z 269DEG 49KT 3671 8840 3625 8837 

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

Shamburger

1 follow-up statement

731 
WWUS54 KOHX 040922
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
422 AM CDT Tue May 4 2021

TNC083-085-161-041000-
/O.CON.KOHX.SV.W.0062.000000T0000Z-210504T1000Z/
Stewart TN-Houston TN-Humphreys TN-
422 AM CDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 AM CDT
FOR STEWART...HOUSTON AND NORTHEASTERN HUMPHREYS COUNTIES...

At 421 AM CDT, severe thunderstorms were located along a line
extending from Murray to near Springville, 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...
Dover, Erin, Tennessee Ridge, Big Rock, Cumberland City, Land Between
The Lakes, Houston County Airport and Indian Mound.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3666 8785 3663 8785 3664 8765 3615 8756
      3615 8792 3617 8792 3622 8795 3626 8794
      3631 8796 3645 8806 3647 8805 3649 8806
      3652 8804 3656 8803 3668 8807
TIME...MOT...LOC 0921Z 266DEG 53KT 3673 8821 3627 8818 

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

Shamburger

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 9:22 PM CDT	River Flood Advisory	OHX	Hickman	11 hr
May 3, 11:50 PM CDT	Special Weather Statement	OHX	Sumner	40 min
May 3, 11:56 PM CDT	Special Weather Statement	OHX	Jackson, Macon, Trousdale	34 min
May 4, 12:25 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Trousdale	35 min
May 4, 12:58 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon	47 min
May 4, 1:32 AM CDT	Special Weather Statement	OHX	Cumberland	43 min
May 4, 1:34 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Overton	26 min
May 4, 1:54 AM CDT	Special Weather Statement	OHX	Macon	51 min
May 4, 2:00 AM CDT	Special Weather Statement	OHX	Pickett	45 min
May 4, 2:07 AM CDT	Severe Thunderstorm Warning	OHX	Cumberland	23 min
May 4, 3:01 AM CDT	Special Weather Statement	OHX	Clay	29 min
May 4, 3:07 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Overton, Pickett	38 min
May 4, 4:50 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Houston, Montgomery, Robertson, Stewart	55 min
May 4, 5:02 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Hickman, Houston, Humphreys, Perry	58 min
May 4, 5:39 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Robertson, Sumner	51 min
May 4, 5:43 AM CDT	Special Weather Statement	OHX	Lewis, Perry	47 min
May 4, 5:56 AM CDT	Tornado Warning	OHX	Davidson, Robertson, Sumner	34 min
May 4, 6:00 AM CDT	Special Weather Statement	OHX	Hickman	30 min
May 4, 6:10 AM CDT	Tornado Warning	OHX	Robertson, Sumner	22 min
May 4, 6:16 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Macon, Smith, Sumner, Trousdale, Wilson	44 min
May 4, 6:21 AM CDT	Tornado Warning	OHX	Sumner, Trousdale, Wilson	24 min
May 4, 6:23 AM CDT	Special Weather Statement	OHX	Maury, Williamson	37 min
May 4, 6:28 AM CDT	Special Weather Statement	OHX	Giles, Lawrence	47 min
May 4, 6:42 AM CDT	Tornado Warning	OHX	Macon, Smith, Sumner, Trousdale	33 min
May 4, 6:52 AM CDT	Severe Thunderstorm Warning	OHX	Clay, DeKalb, Jackson, Macon, Putnam, Smith and 2 more	38 min
May 4, 6:59 AM CDT	Special Weather Statement	OHX	Cannon, Rutherford	31 min
May 4, 7:01 AM CDT	Special Weather Statement	OHX	Bedford, Giles, Marshall	29 min
May 4, 7:11 AM CDT	Tornado Warning	OHX	Jackson, Smith	34 min
May 4, 7:27 AM CDT	Tornado Warning	OHX	DeKalb, Putnam, Smith	33 min
May 4, 7:29 AM CDT	Severe Thunderstorm Warning	OHX	Clay, DeKalb, Fentress, Jackson, Overton, Pickett and 2 more	46 min
May 4, 7:35 AM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, DeKalb, Rutherford, Warren	40 min
May 4, 7:48 AM CDT	Tornado Warning	OHX	DeKalb, Putnam, White	27 min
May 4, 7:53 AM CDT	Severe Thunderstorm Warning	OHX	Coffee, Cumberland, DeKalb, Grundy, Van Buren, Warren and 1 more	37 min
May 4, 8:05 AM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Fentress, Overton, Pickett, Putnam, White	40 min
May 4, 8:07 AM CDT	Tornado Warning	OHX	Cumberland, White	23 min
May 4, 8:24 AM CDT	Tornado Warning	OHX	Cumberland, White	11 min
May 4, 8:29 AM CDT	Areal Flood Advisory	OHX	Clay, Fentress, Jackson, Overton, Pickett	2 hr
May 4, 9:32 AM CDT	River Flood Warning	OHX	Perry	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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.