Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 70, NWS Nashville, TN

May 4, 20217 counties in Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at May 4, 2021, 7:53 AM CDT for 7 counties in Tennessee. It was in force for 37 min. 2 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: May 4, 2021, 7:53 AM CDT (12:53 UTC)
Expired: May 4, 2021, 8:30 AM CDT
In force: 37 min
Issued by: NWS Nashville, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Grundy County, TN, Van Buren County, TN, Warren County, TN, White County, TN

The radar

The Northeast Alabama radar (KHTX), 84 km from the middle of the area, began a volume at 12:52 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
May 4, 8:04 AM CDT	TSTM WND DMG	3 E Manchester, TN	NUMEROUS TREES WERE BLOWN DOWN ALONG JONES VALLEY ROAD
May 4, 8:05 AM CDT	TSTM WND DMG	2 Ese Manchester, TN	TREES AND POWER LINES WERE BLOWN DOWN ON HICKERSON ROAD

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 4, 5:13 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 0.9 hours before the alert went out and 264 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: 590 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 753 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 207 m²/s²
0-3 km storm-relative helicity: 213 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

As transmitted.

708 
WUUS54 KOHX 041253
SVROHX
TNC031-035-041-061-175-177-185-041330-
/O.NEW.KOHX.SV.W.0070.210504T1253Z-210504T1330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
753 AM CDT Tue May 4 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Southwestern Cumberland County in Middle Tennessee...
  Southeastern De Kalb County in Middle Tennessee...
  Van Buren County in Middle Tennessee...
  Warren County in Middle Tennessee...
  Central Coffee County in Middle Tennessee...
  Northern Grundy County in Middle Tennessee...
  White County in Middle Tennessee...

* Until 830 AM CDT.

* At 753 AM CDT, severe thunderstorms were located along a line
  extending from 6 miles southeast of Smithville to near Tullahoma,
  moving east at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  McMinnville, Crossville, Manchester, Sparta, Spencer, Tullahoma,
  Gruetli-Laager, Altamont, Coalmont, Morrison, Palmer, Pleasant
  Hill, Doyle, Beersheba Springs, Centertown, Viola, Virgin Falls
  State Natural Area, Rock Island State Park, Summitville and Fall
  Creek Falls State Park.

This includes Interstate 24 between mile markers 109 and 123.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3577 8520 3576 8527 3572 8527 3557 8542
      3553 8561 3549 8554 3543 8554 3541 8549
      3538 8550 3534 8604 3536 8616 3533 8620
      3534 8626 3592 8578 3599 8503
TIME...MOT...LOC 1253Z 260DEG 43KT 3588 8577 3541 8616 

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

13

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 9:22 PM CDT	River Flood Advisory	OHX	Hickman	11 hr
May 3, 11:50 PM CDT	Special Weather Statement	OHX	Sumner	40 min
May 3, 11:56 PM CDT	Special Weather Statement	OHX	Jackson, Macon, Trousdale	34 min
May 4, 12:25 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon, Trousdale	35 min
May 4, 12:58 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Jackson, Macon	47 min
May 4, 1:32 AM CDT	Special Weather Statement	OHX	Cumberland	43 min
May 4, 1:34 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Overton	26 min
May 4, 1:54 AM CDT	Special Weather Statement	OHX	Macon	51 min
May 4, 2:00 AM CDT	Special Weather Statement	OHX	Pickett	45 min
May 4, 2:07 AM CDT	Severe Thunderstorm Warning	OHX	Cumberland	23 min
May 4, 3:01 AM CDT	Special Weather Statement	OHX	Clay	29 min
May 4, 3:07 AM CDT	Severe Thunderstorm Warning	OHX	Clay, Overton, Pickett	38 min
May 4, 4:12 AM CDT	Severe Thunderstorm Warning	OHX	Houston, Humphreys, Stewart	48 min
May 4, 4:50 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Houston, Montgomery, Robertson, Stewart	55 min
May 4, 5:02 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Hickman, Houston, Humphreys, Perry	58 min
May 4, 5:39 AM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Robertson, Sumner	51 min
May 4, 5:43 AM CDT	Special Weather Statement	OHX	Lewis, Perry	47 min
May 4, 5:56 AM CDT	Tornado Warning	OHX	Davidson, Robertson, Sumner	34 min
May 4, 6:00 AM CDT	Special Weather Statement	OHX	Hickman	30 min
May 4, 6:10 AM CDT	Tornado Warning	OHX	Robertson, Sumner	22 min
May 4, 6:16 AM CDT	Severe Thunderstorm Warning	OHX	Davidson, Macon, Smith, Sumner, Trousdale, Wilson	44 min
May 4, 6:21 AM CDT	Tornado Warning	OHX	Sumner, Trousdale, Wilson	24 min
May 4, 6:23 AM CDT	Special Weather Statement	OHX	Maury, Williamson	37 min
May 4, 6:28 AM CDT	Special Weather Statement	OHX	Giles, Lawrence	47 min
May 4, 6:42 AM CDT	Tornado Warning	OHX	Macon, Smith, Sumner, Trousdale	33 min
May 4, 6:52 AM CDT	Severe Thunderstorm Warning	OHX	Clay, DeKalb, Jackson, Macon, Putnam, Smith and 2 more	38 min
May 4, 6:59 AM CDT	Special Weather Statement	OHX	Cannon, Rutherford	31 min
May 4, 7:01 AM CDT	Special Weather Statement	OHX	Bedford, Giles, Marshall	29 min
May 4, 7:11 AM CDT	Tornado Warning	OHX	Jackson, Smith	34 min
May 4, 7:27 AM CDT	Tornado Warning	OHX	DeKalb, Putnam, Smith	33 min
May 4, 7:29 AM CDT	Severe Thunderstorm Warning	OHX	Clay, DeKalb, Fentress, Jackson, Overton, Pickett and 2 more	46 min
May 4, 7:35 AM CDT	Severe Thunderstorm Warning	OHX	Bedford, Cannon, Coffee, DeKalb, Rutherford, Warren	40 min
May 4, 7:48 AM CDT	Tornado Warning	OHX	DeKalb, Putnam, White	27 min
May 4, 8:05 AM CDT	Severe Thunderstorm Warning	OHX	Cumberland, Fentress, Overton, Pickett, Putnam, White	40 min
May 4, 8:07 AM CDT	Tornado Warning	OHX	Cumberland, White	23 min
May 4, 8:24 AM CDT	Tornado Warning	OHX	Cumberland, White	11 min
May 4, 8:29 AM CDT	Areal Flood Advisory	OHX	Clay, Fentress, Jackson, Overton, Pickett	2 hr
May 4, 9:32 AM CDT	River Flood Warning	OHX	Perry	21 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.