Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 112, NWS Nashville, TN

July 26, 2021Marshall County, Maury County, Williamson County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 26, 2021, 5:55 PM CDT for Marshall County, Maury County, Williamson County, Tennessee. It was in force for 16 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: Jul 26, 2021, 5:55 PM CDT (22:55 UTC)
Expired: Jul 26, 2021, 6:11 PM CDT
In force: 16 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Marshall County, TN, Maury County, TN, Williamson County, TN

The radar

The Nashville radar (KOHX), 60 km from the middle of the area, began a volume at 22:59 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.9 hours before the alert went out and 46 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: 1186 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 939 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: -6 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

230 
WUUS54 KOHX 262255
SVROHX
TNC117-119-187-262330-
/O.NEW.KOHX.SV.W.0112.210726T2255Z-210726T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
555 PM CDT Mon Jul 26 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  North central Marshall County in Middle Tennessee...
  Northeastern Maury County in Middle Tennessee...
  Southeastern Williamson County in Middle Tennessee...

* Until 630 PM CDT.

* At 555 PM CDT, a severe thunderstorm was located over Thompson's
  Station, or near Franklin, moving southeast at 15 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Franklin, Columbia, Spring Hill, Thompson's Station and I-65 East
  Of Columbia.

This includes the following highways...
 Interstate 65 between mile markers 42 and 67.
 Interstate 840 between mile markers 23 and 37.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3557 8693 3588 8701 3595 8682 3577 8666
      3577 8667 3575 8668 3575 8670 3572 8670
      3572 8669 3570 8667 3569 8664 3567 8664
TIME...MOT...LOC 2255Z 333DEG 14KT 3584 8690 

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

27

1 follow-up statement

227 
WWUS54 KOHX 262311
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
611 PM CDT Mon Jul 26 2021

TNC117-119-187-262321-
/O.CAN.KOHX.SV.W.0112.000000T0000Z-210726T2330Z/
Marshall TN-Maury TN-Williamson TN-
611 PM CDT Mon Jul 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MARSHALL...
NORTHEASTERN MAURY AND SOUTHEASTERN WILLIAMSON COUNTIES IS
CANCELLED...
                
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 has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 3557 8693 3588 8701 3595 8682 3577 8666
      3577 8667 3575 8668 3575 8670 3572 8670
      3572 8669 3570 8667 3569 8664 3567 8664
TIME...MOT...LOC 2310Z 333DEG 14KT 3578 8686 

$$

27

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 10:57 AM CDT	Areal Flood Advisory	OHX	Davidson, Rutherford, Williamson	2 hr
Jul 26, 12:16 PM CDT	Special Weather Statement	OHX	Marshall	44 min
Jul 26, 12:34 PM CDT	Areal Flood Advisory	OHX	Lawrence, Wayne	116 min
Jul 26, 1:20 PM CDT	Special Weather Statement	OHX	Bedford	25 min
Jul 26, 3:38 PM CDT	Special Weather Statement	OHX	Smith	52 min
Jul 26, 4:26 PM CDT	Special Weather Statement	OHX	Cumberland	34 min
Jul 26, 4:55 PM CDT	Areal Flood Advisory	OHX	Cumberland	2 hr
Jul 26, 5:11 PM CDT	Special Weather Statement	OHX	Cumberland	34 min
Jul 26, 5:48 PM CDT	Special Weather Statement	OHX	Williamson	42 min
Jul 26, 6:20 PM CDT	Special Weather Statement	OHX	Coffee	40 min
Jul 26, 6:29 PM CDT	Severe Thunderstorm Warning	OHX	Coffee	31 min
Jul 26, 6:33 PM CDT	Special Weather Statement	OHX	Van Buren	27 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.