Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 118, NWS Nashville, TN

July 31, 2021Davidson County, Williamson County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 31, 2021, 8:24 PM CDT for Davidson County, Williamson County, Tennessee. It was in force for 36 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
Jul 31, 2021, 8:24 PM CDT (01:24 UTC)
Expired
Jul 31, 2021, 9:00 PM CDT
In force
36 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Davidson County, TN, Williamson County, TN

The radar

The Nashville radar (KOHX), 28 km from the middle of the area, began a volume at 01:25 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

TimeReportWhereRemark
Jul 31, 8:30 PM CDTTSTM WND DMG4 Nw Belle Meade, TNSEVERAL TREES DOWN IN BELLS BEND AT 3964-4001 OLD HICKORY BLVD
Jul 31, 8:42 PM CDTTSTM WND DMGOak Hill, TNTREES UPROOTED AND SOME SMALL HAIL. TREES ON A HOUSE AND THE ROAD.
Jul 31, 8:44 PM CDTTSTM WND DMG1 Nnw Oak Hill, TNDELAYED REPORT...TSPOTTER REPORT OF MULTIPLE MATURE TREES DOWN ON LEALAND LANE BETWEEN BATTERY AND STONEWALL FROM FIRST ROUND OF STORMS.

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 00:00Z, 1.4 hours before the alert went out and 24 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-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2021-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1106 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2021-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1106 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1447 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
251 m²/s²
Significant tornado parameter
0.3
Supercell composite
5.3

Open this sounding in Storm Lab

The text

As transmitted.

821 
WUUS54 KOHX 010124
SVROHX
TNC037-187-010200-
/O.NEW.KOHX.SV.W.0118.210801T0124Z-210801T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
824 PM CDT Sat Jul 31 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Southern Davidson County in Middle Tennessee...
  Northeastern Williamson County in Middle Tennessee...

* Until 900 PM CDT.

* At 822 PM CDT, a severe thunderstorm was located 7 miles southeast
  of Ashland City, moving southeast at 25 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Nashville, Brentwood, Nolensville, Forest Hills, Oak Hill, Belle
  Meade, Antioch, Berry Hill, Beaman Park, Bells Bend and Percy
  Priest Lake.

This second severe storm will affect those in downtown Nashville and 
attending Nissan Stadium, If you are in these areas you are in the 
path of this storm and should prepare for IMMINENT DANGEROUS WEATHER 
CONDITIONS. SEEK SHELTER NOW!

This includes the following highways...
 Interstate 40 between mile markers 198 and 218.
 Interstate 65 between mile markers 71 and 88.
 Interstate 24 between mile markers 47 and 62.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3629 8694 3611 8654 3592 8670 3613 8700
      3623 8698 3627 8696
TIME...MOT...LOC 0122Z 301DEG 23KT 3619 8694 

HAIL...1.00IN
WIND...60MPH
 
$$

Shamburger
1 follow-up statement
035 
WWUS54 KOHX 010143
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
843 PM CDT Sat Jul 31 2021

TNC037-187-010200-
/O.CON.KOHX.SV.W.0118.000000T0000Z-210801T0200Z/
Davidson TN-Williamson TN-
843 PM CDT Sat Jul 31 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR SOUTHERN DAVIDSON AND NORTHEASTERN WILLIAMSON COUNTIES...

At 841 PM CDT, a severe thunderstorm was located over Belle Meade, 
moving southeast at 25 mph.

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

SOURCE...Public. The public reported dime size hail on White Bridge 
         Road with this storm.

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

Locations impacted include...
Nashville, Brentwood, Nolensville, Forest Hills, Oak Hill, Belle
Meade, Antioch, Bellevue, Berry Hill and Percy Priest Lake.

This includes the following highways...
 Interstate 40 between mile markers 198 and 218.
 Interstate 65 between mile markers 71 and 88.
 Interstate 24 between mile markers 47 and 62.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3611 8654 3592 8670 3610 8696 3624 8682
TIME...MOT...LOC 0141Z 306DEG 23KT 3610 8684 

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

Shamburger

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 7:03 PM CDTSevere Thunderstorm WarningOHXRobertson27 min
Jul 31, 7:07 PM CDTSpecial Weather StatementOHXRobertson23 min
Jul 31, 7:27 PM CDTSevere Thunderstorm WarningOHXCheatham, Dickson, Montgomery20 min
Jul 31, 7:31 PM CDTSpecial Weather StatementOHXDavidson, Robertson44 min
Jul 31, 7:41 PM CDTSpecial Weather StatementOHXRobertson34 min
Jul 31, 7:51 PM CDTSpecial Weather StatementOHXCheatham, Davidson39 min
Jul 31, 7:58 PM CDTSevere Thunderstorm WarningOHXDavidson, Wilson47 min
Jul 31, 8:05 PM CDTSpecial Weather StatementOHXSumner, Trousdale40 min
Jul 31, 8:47 PM CDTAreal Flood AdvisoryOHXRobertson4 hr
Jul 31, 8:57 PM CDTSevere Thunderstorm WarningOHXDavidson, Rutherford, Williamson33 min
Jul 31, 9:10 PM CDTSevere Thunderstorm WarningOHXHouston, Montgomery, Stewart50 min
Jul 31, 9:16 PM CDTSpecial Weather StatementOHXDavidson59 min
Jul 31, 9:48 PM CDTSpecial Weather StatementOHXCheatham, Dickson27 min
Jul 31, 9:53 PM CDTAreal Flood AdvisoryOHXCheatham, Davidson, Robertson, Sumner3 hr
Jul 31, 9:57 PM CDTSevere Thunderstorm WarningOHXCheatham, Dickson, Hickman, Montgomery, Williamson33 min
Jul 31, 10:19 PM CDTSevere Thunderstorm WarningOHXCheatham, Davidson, Marshall, Maury, Williamson41 min
Jul 31, 10:24 PM CDTFlash Flood WarningOHXCheatham, Davidson, Williamson4 hr
Jul 31, 10:52 PM CDTSevere Thunderstorm WarningOHXBedford, Marshall, Maury, Rutherford, Williamson38 min
Jul 31, 10:55 PM CDTAreal Flood AdvisoryOHXDavidson, Rutherford, Wilson16 min
Jul 31, 11:10 PM CDTFlash Flood WarningOHXDavidson, Rutherford, Wilson3 hr
Jul 31, 11:24 PM CDTSevere Thunderstorm WarningOHXLewis, Perry, Wayne36 min
Jul 31, 11:26 PM CDTSevere Thunderstorm WarningOHXBedford, Cannon, Coffee, Marshall, Rutherford, Warren34 min
Jul 31, 11:36 PM CDTRiver Flood WarningOHXDavidson3 hr
Jul 31, 11:41 PM CDTRiver Flood AdvisoryOHXDavidson3 hr
Jul 31, 11:55 PM CDTSevere Thunderstorm WarningOHXBedford, Cannon, Coffee, Grundy, Rutherford, Van Buren and 1 more53 min
Aug 1, 2:40 AM CDTSpecial Weather StatementOHXWayne50 min
Aug 1, 3:43 AM CDTSpecial Weather StatementOHXWayne47 min
Aug 1, 4:29 AM CDTSpecial Weather StatementOHXLawrence, Wayne46 min
Aug 1, 6:47 AM CDTSpecial Weather StatementOHXGiles, Lawrence43 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2021Every 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.