Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 131, NWS Nashville, TN

August 13, 2021Rutherford County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Aug 13, 2021, 1:05 PM CDT for Rutherford County, Tennessee. It was in force for 25 min. 3 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: Aug 13, 2021, 1:05 PM CDT (18:05 UTC)
Expired: Aug 13, 2021, 1:30 PM CDT
In force: 25 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Rutherford County, TN

The radar

The Nashville radar (KOHX), 41 km from the middle of the area, began a volume at 18:05 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
Aug 13, 1:08 PM CDT	TSTM WND DMG	4 Sw Walterhill, TN	A FEW TREES DOWN, SOME FENCING, A SMALL STORAGE SHED, AND A FEW SHINGLES ON HOMES ALONG AND OFF OF SHACKLETT ROAD. TIME ESTIMATED VIA RADAR.
Aug 13, 1:10 PM CDT	TSTM WND DMG	4 Nnw Murfreesboro, TN	TREE DOWN AT SATINWOOD AND TWISTED OAK
Aug 13, 1:10 PM CDT	TSTM WND DMG	5 N Murfreesboro, TN	TREES WERE BLOWN DOWN NORTH OF MURFREESBORO. TIME WAS ESTIMATED BASED ON RADAR.

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, 6.1 hours before the alert went out and 30 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: 1072 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 1013 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

138 
WUUS54 KOHX 131805
SVROHX
TNC149-131830-
/O.NEW.KOHX.SV.W.0131.210813T1805Z-210813T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
105 PM CDT Fri Aug 13 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Central Rutherford County in Middle Tennessee...

* Until 130 PM CDT.

* At 105 PM CDT, a severe thunderstorm was located near Murfreesboro,
  moving east at 10 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Murfreesboro, Smyrna and Walterhill. 

This includes the following highways...
 Interstate 24 between mile markers 69 and 80.
 Interstate 840 between mile markers 49 and 61.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3582 8653 3599 8656 3599 8634 3583 8629
TIME...MOT...LOC 1805Z 265DEG 8KT 3591 8644 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

13

1 follow-up statement

817 
WWUS54 KOHX 131821
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
121 PM CDT Fri Aug 13 2021

TNC149-131831-
/O.EXP.KOHX.SV.W.0131.000000T0000Z-210813T1830Z/
Rutherford TN-
121 PM CDT Fri Aug 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL RUTHERFORD COUNTY WILL
EXPIRE AT 130 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with this thunderstorm.

LAT...LON 3582 8653 3599 8656 3599 8634 3583 8629
TIME...MOT...LOC 1821Z 265DEG 8KT 3591 8640 

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 12:16 PM CDT	Special Weather Statement	OHX	Marshall	44 min
Aug 13, 12:37 PM CDT	Special Weather Statement	OHX	Giles	53 min
Aug 13, 12:57 PM CDT	Special Weather Statement	OHX	Rutherford	48 min
Aug 13, 1:20 PM CDT	Special Weather Statement	OHX	Williamson	25 min
Aug 13, 1:31 PM CDT	Special Weather Statement	OHX	Wilson	29 min
Aug 13, 1:40 PM CDT	Special Weather Statement	OHX	Williamson	50 min
Aug 13, 2:03 PM CDT	Areal Flood Advisory	OHX	Williamson	117 min
Aug 13, 2:38 PM CDT	Areal Flood Advisory	OHX	Lawrence, Wayne	2 hr
Aug 13, 2:47 PM CDT	Areal Flood Advisory	OHX	Davidson	118 min
Aug 13, 2:51 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Hickman, Williamson	39 min
Aug 13, 2:53 PM CDT	Areal Flood Advisory	OHX	Hickman, Humphreys, Perry	2 hr
Aug 13, 2:56 PM CDT	Areal Flood Advisory	OHX	Dickson, Hickman, Williamson	2 hr
Aug 13, 3:24 PM CDT	Special Weather Statement	OHX	Hickman, Lewis, Perry	51 min
Aug 13, 3:28 PM CDT	Flash Flood Warning	OHX	Hickman, Humphreys, Perry	2 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.