Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 63, NWS Nashville, TN
NWS Nashville, TN issued this severe thunderstorm warning at May 4, 2021, 4:50 AM CDT for 6 counties in Tennessee. It was in force for 55 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
- May 4, 2021, 4:50 AM CDT (09:50 UTC)
- Expired
- May 4, 2021, 5:45 AM CDT
- In force
- 55 min
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Cheatham County, TN, Dickson County, TN, Houston County, TN, Montgomery County, TN, Robertson County, TN, Stewart County, TN
The radar
The Ft Campbell radar (KHPX), 37 km from the middle of the area, began a volume at 09:54 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, 5:19 AM CDT | TSTM WND DMG | 7 Ne Slayden, TN | A SWATH OF TREES WAS SNAPPED AND UPROOTED NEAR THE INTERSECTION OF HIGHWAY 48 AND GRAYS CHAPEL ROAD |
| May 4, 5:30 AM CDT | TSTM WND DMG | 11 Se Clarksville, TN | SEVERAL TREES WERE BLOWN DOWN AT 3567 TANNAHILL COURT |
| May 4, 5:43 AM CDT | TSTM WND DMG | Cedar Hill, TN | NUMEROUS TREES DOWN AND POWER OUTAGES ACROSS ROBERTSON COUNTY |
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, 1:41 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 9.8 hours before the alert went out and 69 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.
422 WUUS54 KOHX 040950 SVROHX TNC021-043-083-125-147-161-041045- /O.NEW.KOHX.SV.W.0063.210504T0950Z-210504T1045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Nashville TN 450 AM CDT Tue May 4 2021 The National Weather Service in Nashville has issued a * Severe Thunderstorm Warning for... Northern Dickson County in Middle Tennessee... Montgomery County in Middle Tennessee... Eastern Stewart County in Middle Tennessee... Northern Cheatham County in Middle Tennessee... Northeastern Houston County in Middle Tennessee... Western Robertson County in Middle Tennessee... * Until 545 AM CDT. * At 450 AM CDT, severe thunderstorms were located along a line extending from 9 miles southeast of Cadiz to Tennessee Ridge, moving east at 55 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Springfield, Oak Grove, Ashland City, Erin, Fort Campbell, Clarksville, Coopertown, Guthrie, Tennessee Ridge, Big Rock, Pleasant View, Adams, Vanleer, Cedar Hill, Cumberland City, Slayden, Cheatham Dam, Palmyra, Woodlawn and Indian Mound. This includes Interstate 24 between mile markers 1 and 29. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3625 8698 3625 8783 3664 8777 3665 8691 TIME...MOT...LOC 0950Z 262DEG 46KT 3678 8768 3629 8776 HAIL...0.75IN WIND...60MPH $$ Shamburger
2 follow-up statements
282
WWUS54 KOHX 041010
SVSOHX
Severe Weather Statement
National Weather Service Nashville TN
510 AM CDT Tue May 4 2021
TNC161-041019-
/O.CAN.KOHX.SV.W.0063.000000T0000Z-210504T1045Z/
Stewart TN-
510 AM CDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN STEWART COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 800 AM CDT for
Middle Tennessee.
LAT...LON 3625 8698 3625 8758 3664 8750 3665 8691
TIME...MOT...LOC 1009Z 268DEG 43KT 3664 8741 3630 8748
$$
TNC021-043-083-125-147-041045-
/O.CON.KOHX.SV.W.0063.000000T0000Z-210504T1045Z/
Dickson TN-Montgomery TN-Cheatham TN-Houston TN-Robertson TN-
510 AM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT
FOR NORTHERN DICKSON...MONTGOMERY...NORTHERN CHEATHAM...EAST CENTRAL
HOUSTON AND WESTERN ROBERTSON COUNTIES...
At 509 AM CDT, severe thunderstorms were located along a line
extending from Oak Grove to Slayden, moving east at 50 mph.
HAZARD...70 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Springfield, Ashland City, Clarksville, Coopertown, Guthrie, Pleasant
View, Adams, Vanleer, Cedar Hill, Slayden, Cheatham Dam, Palmyra,
Woodlawn and Cunningham.
This includes Interstate 24 between mile markers 1 and 29.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3625 8698 3625 8758 3664 8750 3665 8691
TIME...MOT...LOC 1009Z 268DEG 43KT 3664 8741 3630 8748
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...70MPH
$$
Shamburger040 WWUS54 KOHX 041027 SVSOHX Severe Weather Statement National Weather Service Nashville TN 527 AM CDT Tue May 4 2021 TNC083-041036- /O.CAN.KOHX.SV.W.0063.000000T0000Z-210504T1045Z/ Houston TN- 527 AM CDT Tue May 4 2021 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL HOUSTON COUNTY IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch also remains in effect until 1100 AM CDT for Middle Tennessee. LAT...LON 3625 8698 3625 8743 3664 8729 3665 8691 TIME...MOT...LOC 1026Z 267DEG 42KT 3663 8718 3628 8730 $$ TNC021-043-125-147-041045- /O.CON.KOHX.SV.W.0063.000000T0000Z-210504T1045Z/ Dickson TN-Montgomery TN-Cheatham TN-Robertson TN- 527 AM CDT Tue May 4 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT FOR NORTHEASTERN DICKSON...EASTERN MONTGOMERY...NORTHERN CHEATHAM AND WESTERN ROBERTSON COUNTIES... At 526 AM CDT, severe thunderstorms were located along a line extending from Guthrie to Cumberland Furnace, moving east at 50 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Springfield, Ashland City, Clarksville, Coopertown, Guthrie, Pleasant View, Adams, Cedar Hill and Cheatham Dam. This includes Interstate 24 between mile markers 3 and 29. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3625 8698 3625 8743 3664 8729 3665 8691 TIME...MOT...LOC 1026Z 267DEG 42KT 3663 8718 3628 8730 TORNADO...POSSIBLE HAIL...0.75IN WIND...60MPH $$ Shamburger
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, 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, 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.