Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 22, NWS Nashville, TN

March 25, 20215 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Mar 25, 2021, 8:41 PM CDT for 5 counties in Tennessee. It was in force for 34 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: Mar 25, 2021, 8:41 PM CDT (01:41 UTC)
Expired: Mar 25, 2021, 9:15 PM CDT
In force: 34 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bedford County, TN, Giles County, TN, Marshall County, TN, Maury County, TN, Rutherford County, TN

The radar

The Northeast Alabama radar (KHTX), 78 km from the middle of the area, began a volume at 01:43 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
Mar 25, 3:48 PM CDT	Tornado Watch	SPC	7 hr
Mar 25, 7:57 PM CDT	Tornado Watch	SPC	3 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 1.7 hours before the alert went out and 69 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: 290 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 615 m above ground
0-6 km bulk shear: 85 kt
0-1 km storm-relative helicity: 657 m²/s²
0-3 km storm-relative helicity: 631 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 7.4

Open this sounding in Storm Lab

The text

As transmitted.

932 
WUUS54 KOHX 260141
SVROHX
TNC003-055-117-119-149-260215-
/O.NEW.KOHX.SV.W.0022.210326T0141Z-210326T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
841 PM CDT Thu Mar 25 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Central Marshall County in Middle Tennessee...
  South central Rutherford County in Middle Tennessee...
  Southeastern Maury County in Middle Tennessee...
  Northeastern Giles County in Middle Tennessee...
  Bedford County in Middle Tennessee...

* Until 915 PM CDT.

* At 840 PM CDT, a severe thunderstorm was located over Lewisburg,
  moving east at 45 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Shelbyville, Lewisburg, Cornersville, Wartrace, Bell Buckle,
  Normandy, Belfast, Deason, Farmington, Unionville and Fosterville.

This includes Interstate 65 between mile markers 27 and 38.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1100 PM CDT for Middle
Tennessee. A Tornado Watch also remains in effect until 100 AM CDT
for Middle Tennessee.

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

&&

LAT...LON 3553 8693 3571 8638 3550 8624 3547 8625
      3546 8624 3534 8701
TIME...MOT...LOC 0140Z 254DEG 39KT 3549 8678 

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

10

1 follow-up statement

456 
WWUS54 KOHX 260155
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
855 PM CDT Thu Mar 25 2021

TNC055-119-260204-
/O.CAN.KOHX.SV.W.0022.000000T0000Z-210326T0215Z/
Maury TN-Giles TN-
855 PM CDT Thu Mar 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MAURY AND
NORTHEASTERN GILES 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 1100 PM CDT for Middle
Tennessee. A Tornado Watch also remains in effect until 100 AM CDT
for Middle Tennessee.

LAT...LON 3558 8678 3571 8638 3550 8624 3546 8625
      3535 8692
TIME...MOT...LOC 0154Z 254DEG 39KT 3553 8659 

$$

TNC003-117-149-260215-
/O.CON.KOHX.SV.W.0022.000000T0000Z-210326T0215Z/
Marshall TN-Rutherford TN-Bedford TN-
855 PM CDT Thu Mar 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR CENTRAL MARSHALL...SOUTH CENTRAL RUTHERFORD AND BEDFORD
COUNTIES...

At 854 PM CDT, a severe thunderstorm was located 8 miles west of
Shelbyville, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Shelbyville, Lewisburg, Cornersville, Wartrace, Bell Buckle, Belfast,
Deason, Farmington, Unionville and Fosterville.

This includes Interstate 65 between mile markers 26 and 30.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1100 PM CDT for Middle
Tennessee. A Tornado Watch also remains in effect until 100 AM CDT
for Middle Tennessee.

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

&&

LAT...LON 3558 8678 3571 8638 3550 8624 3546 8625
      3535 8692
TIME...MOT...LOC 0154Z 254DEG 39KT 3553 8659 

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
Mar 25, 7:04 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lewis, Maury, Williamson	26 min
Mar 25, 7:04 PM CDT	Tornado Warning	OHX	Lewis, Perry, Wayne	41 min
Mar 25, 7:12 PM CDT	Areal Flood Advisory	OHX	Lewis, Perry, Wayne	2 hr
Mar 25, 7:27 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lewis, Maury, Williamson	9 min
Mar 25, 7:36 PM CDT	Tornado Warning	OHX	Lawrence, Lewis, Maury, Wayne	39 min
Mar 25, 7:39 PM CDT	Special Weather Statement	OHX	Trousdale, Williamson	36 min
Mar 25, 7:50 PM CDT	Severe Thunderstorm Warning	OHX	Lawrence, Wayne	40 min
Mar 25, 7:52 PM CDT	Severe Thunderstorm Warning	OHX	Davidson, Williamson	38 min
Mar 25, 8:13 PM CDT	Tornado Warning	OHX	Davidson, DeKalb, Rutherford, Smith, Williamson, Wilson	32 min
Mar 25, 8:35 PM CDT	Tornado Warning	OHX	Bedford, Marshall, Maury, Rutherford, Williamson	25 min
Mar 25, 8:41 PM CDT	Tornado Warning	OHX	Smith, Trousdale, Wilson	34 min
Mar 25, 8:49 PM CDT	Tornado Warning	OHX	Rutherford	26 min
Mar 25, 9:01 PM CDT	Tornado Warning	OHX	Jackson, Macon, Smith	14 min
Mar 25, 9:09 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, DeKalb, Rutherford, Smith, Wilson	36 min
Mar 25, 9:40 PM CDT	Severe Thunderstorm Warning	OHX	DeKalb, Putnam, White	35 min
Mar 25, 9:53 PM CDT	Areal Flood Advisory	OHX	Davidson	3 hr
Mar 25, 9:54 PM CDT	River Flood Advisory	OHX	Davidson	3 hr
Mar 25, 9:57 PM CDT	River Flood Advisory	OHX	Davidson	3 hr
Mar 25, 10:22 PM CDT	Special Weather Statement	OHX	Fentress, Overton, Pickett, White	38 min
Mar 25, 10:37 PM CDT	Special Weather Statement	OHX	Cumberland	38 min
Mar 25, 10:37 PM CDT	Special Weather Statement	OHX	Grundy, Van Buren	23 min
Mar 26, 5:58 PM CDT	Flash Flood Watch	OHX	Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 32 more	42 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.