Alert archive / Tennessee / Special Weather Statements in 2021

Special Weather Statement, NWS Nashville, TN

March 31, 20217 counties in Tennessee

NWS Nashville, TN issued this special weather statement at Mar 31, 2021, 12:39 AM CDT for 7 counties in Tennessee. It was in force for 66 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 31, 2021, 12:39 AM CDT (05:39 UTC)
Expired: Mar 31, 2021, 1:45 AM CDT
In force: 66 min
Issued by: NWS Nashville, TN

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

The radar

The Northeast Alabama radar (KHTX), 80 km from the middle of the area, began a volume at 05:39 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 00:00Z, 5.7 hours before the alert went out and 85 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2196 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

388 
WWUS84 KOHX 310539
SPSOHX

Special Weather Statement
National Weather Service Nashville TN
1239 AM CDT Wed Mar 31 2021
 
TNZ059>062-075-094-095-310645-
Lawrence TN-Rutherford TN-Williamson TN-Bedford TN-Maury TN-Giles TN-
Marshall TN-
1239 AM CDT Wed Mar 31 2021

...SIGNIFICANT WEATHER ADVISORY FOR MARSHALL...RUTHERFORD...
NORTHEASTERN LAWRENCE...MAURY...WILLIAMSON...GILES AND BEDFORD
COUNTIES UNTIL 145 AM CDT...

At 1238 AM CDT, Doppler radar was tracking strong thunderstorms 
along a line extending from Franklin to Lawrenceburg. Movement was 
east at 45 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Murfreesboro, Franklin, Columbia, Shelbyville, Lewisburg,
Lawrenceburg, Pulaski, Smyrna, Brentwood, La Vergne, Spring Hill,
Nolensville, Mount Pleasant, Thompson's Station, Walterhill, Chapel
Hill, Cornersville, Eagleville, Bell Buckle and Ethridge.

This includes the following highways...
 Interstate 65 between mile markers 10 and 69.
 Interstate 24 between mile markers 68 and 91.
 Interstate 840 between mile markers 15 and 59.

LAT...LON 3514 8744 3597 8704 3596 8616 3534 8647
      3536 8648 3537 8659 3533 8660 3531 8668
      3525 8675 3526 8683 3513 8683
TIME...MOT...LOC 0538Z 250DEG 41KT 3594 8685 3518 8725 

$$

Shamburger

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 10:53 PM CDT	River Flood Advisory	OHX	Maury	10 hr
Mar 30, 11:04 PM CDT	Special Weather Statement	OHX	Cheatham, Dickson, Houston, Humphreys	41 min
Mar 30, 11:12 PM CDT	Special Weather Statement	OHX	Wayne	48 min
Mar 30, 11:40 PM CDT	Areal Flood Advisory	OHX	Dickson, Hickman, Humphreys, Perry	2 hr
Mar 30, 11:44 PM CDT	Special Weather Statement	OHX	Cheatham, Davidson, Williamson	46 min
Mar 30, 11:53 PM CDT	Areal Flood Advisory	OHX	Cheatham, Davidson, Williamson	3 hr
Mar 30, 11:58 PM CDT	Special Weather Statement	OHX	Lewis, Maury	47 min
Mar 30, 11:59 PM CDT	Special Weather Statement	OHX	Giles, Lawrence	46 min
Mar 31, 12:09 AM CDT	Areal Flood Advisory	OHX	Lawrence, Wayne	79 min
Mar 31, 12:28 AM CDT	Areal Flood Advisory	OHX	Rutherford, Sumner, Trousdale, Wilson	3 hr
Mar 31, 1:28 AM CDT	Flash Flood Warning	OHX	Lawrence, Wayne	8 hr
Mar 31, 2:13 AM CDT	Flash Flood Warning	OHX	Giles, Marshall, Maury	7 hr
Mar 31, 2:55 AM CDT	Areal Flood Advisory	OHX	Cheatham, Davidson, Rutherford, Williamson, Wilson	3 hr
Mar 31, 3:35 AM CDT	River Flood Warning	OHX	Davidson	2 hr
Mar 31, 4:19 AM CDT	Areal Flood Advisory	OHX	Bedford, Coffee	5 hr
Mar 31, 7:23 AM CDT	River Flood Advisory	OHX	Hickman	2 hr
Mar 31, 8:17 AM CDT	River Flood Advisory	OHX	Giles	5 hr
Mar 31, 8:42 AM CDT	River Flood Advisory	OHX	Lawrence	4 hr
Mar 31, 9:29 AM CDT	River Flood Advisory	OHX	Davidson, Williamson	17 hr
Mar 31, 1:02 PM CDT	River Flood Advisory	OHX	Perry, Wayne	25 hr
Mar 31, 1:05 PM CDT	River Flood Advisory	OHX	Bedford, Marshall	11 hr
Mar 31, 1:10 PM CDT	River Flood Warning	OHX	Lawrence	16 hr
Mar 31, 1:19 PM CDT	River Flood Warning	OHX	Giles	15 hr
Mar 31, 1:22 PM CDT	River Flood Advisory	OHX	Grundy	7 hr
Mar 31, 1:39 PM CDT	Freeze Warning	OHX	Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 32 more	19 hr
Mar 31, 1:39 PM CDT	Hard Freeze Warning	OHX	Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 32 more	43 hr
Mar 31, 5:23 PM CDT	River Flood Advisory	OHX	Cheatham, Montgomery	52 hr

Nearby

Special Weather Statements in Tennessee, 2021 Every special weather statement 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.