Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 66, NWS Nashville, TN
NWS Nashville, TN issued this severe thunderstorm warning at May 4, 2021, 6:16 AM CDT for 6 counties in Tennessee. It was in force for 44 min. 12 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, 6:16 AM CDT (11:16 UTC)
- Expired
- May 4, 2021, 7:00 AM CDT
- In force
- 44 min
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Davidson County, TN, Macon County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 19 km from the middle of the area, began a volume at 11:20 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, 6:29 AM CDT | TSTM WND DMG | Gallatin, TN | TREES DOWN IN PORTIONS OF GALLATIN |
| May 4, 6:31 AM CDT | TORNADO | 3 Se Gallatin, TN | THIS EF-0 TORNADO BEGAN ON THE SOUTHEAST SIDE OF GALLATIN NEAR COLES FERRY ROAD AND MOVED EASTWARD, BLOWING DOWN NUMEROUS TREES ON STEAM PLANT ROAD, NEWTON LANE, HIDDEN COVE ROAD, CAIRO ROAD, AND LAKEVIEW ROAD. TREES CONTINUED TO BE BLOWN DOWN AS THE TORNADO P |
| May 4, 6:32 AM CDT | TSTM WND DMG | 1 E Hermitage, TN | REPORT OF TREE AND LIMBS DOWN IN TULIP GROVE NEIGHBORHOOD. |
| May 4, 6:38 AM CDT | TORNADO | 2 N Castalian Springs, TN | AN EF-0 TORNADO TOUCHED DOWN ALONG ROCK SPRINGS ROAD SOUTH OF CHENAULT LANE, HEAVILY DAMAGING A BARN AND BLOWING DOWN NUMEROUS TREES. THE TORNADO THEN MOVED EAST ACROSS LAUDERDALE LANE AND HOMER SCOTT ROAD, CONTINUING TO BLOW DOWN TREES. TURNING MORE SOUTHEAST |
| May 4, 6:39 AM CDT | TSTM WND DMG | 3 Ene Castalian Springs, TN | REPORT OF SEVERAL TREES DOWN. FRONT PORCH OVERHANG COLLAPSED ALONG WITH COLUMNS |
| May 4, 6:41 AM CDT | TSTM WND DMG | 4 Se Castalian Springs, TN | SEVERE STRAIGHT-LINE WINDS BLEW DOWN NUMEROUS TREES AND DESTROYED SEVERAL BARNS IN THE AREA AROUND HIGHWAY 231 AND DAVENPORT LANE. |
| May 4, 6:45 AM CDT | TSTM WND DMG | Hartsville, TN | THE WEST TROUSDALE TORNADO DISSIPATED INTO A LARGE DOWNBURST THAT CAUSED WIDESPREAD STRAIGHT-LINE WIND DAMAGE ALONG HIGHWAY 25 AS WELL AS IN AND AROUND THE CITY OF HARTSVILLE. |
| May 4, 6:53 AM CDT | TSTM WND DMG | Lafayette, TN | TREES AND POWERLINES DOWN...SOME ROOFS DAMAGED AS WELL |
| May 4, 6:54 AM CDT | TORNADO | 2 E Hartsville, TN | AN EF-0 TORNADO TOUCHED DOWN JUST WEST OF THE CATO COMMUNITY AND MOVED SOUTHEAST, DAMAGING A BUSINESS AT HIGHWAY 10 AND FORT BLOUNT ROAD. THE TORNADO CONTINUED THROUGH RURAL AREAS BLOWING DOWN TREES ALONG GLASGOW BRANCH ROAD AND LICK CREEK ROAD BEFORE LIFTING. |
| May 4, 6:55 AM CDT | TSTM WND DMG | 4 Sw Lebanon, TN | FENCES AND A SCOREBOARD WERE DAMAGED AT WILSON CENTRAL HIGH SCHOOL. |
| May 4, 6:55 AM CDT | TSTM WND DMG | Hartsville, TN | MULTIPLE TREES AND POWERLINES DOWN...SOME RESIDENTIAL DAMAGE ON 231N...DAMAGE TO BARN ON DAVENPORT LANE...MULTIPLE ROADS BLOCKED |
| May 4, 6:56 AM CDT | TORNADO | 1 Wnw Lafayette, TN | THIS SMALL, WEAK TORNADO TOUCHED DOWN ON BRATTOWNTOWN CIRCLE ON THE WEST SIDE OF LAFAYETTE AND MOVED SOUTHEAST, KNOCKING DOWN SEVERAL TREES AND PARTIALLY BLOWING THE ROOF OFF A CONVENIENCE STORE ON HIGHWAY 52. LAFAYETTE EMS PERSONNEL CAPTURED THE TORNADO ON VI |
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
Nashville Metro, TN (KBNA), launched 00:00Z, 11.3 hours before the alert went out and 25 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.
- Mixed-layer CAPE
- 2263 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1050 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 119 m²/s²
- 0-3 km storm-relative helicity
- 193 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 7.6
The text
As transmitted.
972
WUUS54 KOHX 041116
SVROHX
TNC037-111-159-165-169-189-041200-
/O.NEW.KOHX.SV.W.0066.210504T1116Z-210504T1200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
616 AM CDT Tue May 4 2021
The National Weather Service in Nashville has issued a
* Severe Thunderstorm Warning for...
Northwestern Smith County in Middle Tennessee...
Southeastern Davidson County in Middle Tennessee...
Eastern Sumner County in Middle Tennessee...
Wilson County in Middle Tennessee...
Macon County in Middle Tennessee...
Trousdale County in Middle Tennessee...
* Until 700 AM CDT.
* At 615 AM CDT, severe thunderstorms were located along a line
extending from near Portland to Forest Hills, moving east at 45
mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Gallatin, Lebanon, Lafayette, Hartsville, Hendersonville, La
Vergne, Mount Juliet, Westmoreland, Watertown, Hermitage, Rural
Hill, Belinda City, Antioch, Green Hill, Tuckers Crossroads,
Bethpage, Dixon Springs, Oak Grove, Bledsoe Creek State Park and
Dickerson Chapel Recreation Area.
This includes the following highways...
Interstate 40 between mile markers 218 and 249.
Interstate 840 between mile markers 67 and 76.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3662 8585 3605 8616 3606 8644 3610 8652
3606 8653 3609 8655 3606 8656 3606 8669
3665 8640
TIME...MOT...LOC 1115Z 271DEG 38KT 3656 8659 3607 8683
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$
SchaperThe 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, 6:21 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, 7:53 AM CDT | Severe Thunderstorm Warning | OHX | Coffee, Cumberland, DeKalb, Grundy, Van Buren, Warren and 1 more | 37 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, 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.