Alert archive / Tennessee / Flash Flood Watches in 2021
Flash Flood Watch 7, NWS Nashville, TN
NWS Nashville, TN issued this flash flood watch at Aug 29, 2021, 4:12 AM CDT for 38 counties in Tennessee. It took effect at Aug 30, 2021, 7:00 PM CDT. It was in force for 23 hr.
The area
The counties it named.
The facts
- Issued
- Aug 29, 2021, 4:12 AM CDT (09:12 UTC)
- In effect from
- Aug 30, 2021, 7:00 PM CDT
- Expired
- Aug 31, 2021, 6:00 PM CDT
- In force
- 23 hr
- Issued by
- NWS Nashville, TN
- Flood severity
- None
All 38 counties
Bedford County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Giles County, TN, Grundy County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Lawrence County, TN, Lewis County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, Montgomery County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 30 km from the middle of the area, began a volume at 09:13 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, 9.2 hours before the alert went out and 20 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
- 566 J/kg
- Mixed-layer CIN
- -118 J/kg
- Mixed-layer LCL
- 1144 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
408 WGUS64 KOHX 290912 FFAOHX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Nashville TN 412 AM CDT Sun Aug 29 2021 TNZ005>010-023>031-056>062-075-093>095-292300- /O.NEW.KOHX.FF.A.0007.210831T0000Z-210901T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Houston-Humphreys- Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson-Perry- Hickman-Lewis-Williamson-Maury-Marshall-Rutherford-Bedford-Wayne- Lawrence-Giles- Including the cities of Goodlettsville, Carthage, Smyrna, McEwen, Clarksville, Pulaski, La Vergne, Springfield, Linden, Waverly, Columbia, Brentwood, Nashville, Kingston Springs, Ashland City, Dickson, Waynesboro, Hendersonville, Murfreesboro, New Johnsonville, Lafayette, Franklin, Gainesboro, Hartsville, Lewisburg, Tennessee Ridge, Centerville, Dover, Lawrenceburg, Lobelville, Mount Juliet, Lebanon, Clifton, Celina, South Carthage, Hohenwald, Gordonsville, Shelbyville, Erin, and Gallatin 412 AM CDT Sun Aug 29 2021 ...FLASH FLOOD WATCH IN EFFECT FROM MONDAY EVENING THROUGH LATE TUESDAY NIGHT... The National Weather Service in Nashville has issued a * Flash Flood Watch for a portion of Middle Tennessee, including the following areas, Bedford, Cheatham, Clay, Davidson, Dickson, Giles, Hickman, Houston, Humphreys, Jackson, Lawrence, Lewis, Macon, Marshall, Maury, Montgomery, Perry, Robertson, Rutherford, Smith, Stewart, Sumner, Trousdale, Wayne, Williamson and Wilson. * From Monday evening through late Tuesday night. * Widespread heavy rainfall associated with the remnants of Hurricane Ida are expected to effect portions of Middle TN beginning Monday evening through late Tuesday night. Rainfall amounts between 2" to 4" can be expected with locally higher amounts possible. Prolonged heavy rainfall could lead to flash flooding issues. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Adcock
6 follow-up statements
983 WGUS64 KOHX 292220 FFAOHX Flood Watch National Weather Service Nashville TN 520 PM CDT Sun Aug 29 2021 TNZ005>010-023>031-056>062-075-093>095-300915- /O.CON.KOHX.FF.A.0007.210831T0000Z-210901T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Houston-Humphreys- Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson-Perry- Hickman-Lewis-Williamson-Maury-Marshall-Rutherford-Bedford-Wayne- Lawrence-Giles- Including the cities of Goodlettsville, Carthage, Smyrna, McEwen, Clarksville, Pulaski, La Vergne, Springfield, Linden, Waverly, Columbia, Brentwood, Nashville, Kingston Springs, Ashland City, Dickson, Waynesboro, Hendersonville, Murfreesboro, New Johnsonville, Lafayette, Franklin, Gainesboro, Hartsville, Lewisburg, Tennessee Ridge, Centerville, Dover, Lawrenceburg, Lobelville, Mount Juliet, Lebanon, Clifton, Celina, South Carthage, Hohenwald, Gordonsville, Shelbyville, Erin, and Gallatin 520 PM CDT Sun Aug 29 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM MONDAY EVENING THROUGH LATE TUESDAY NIGHT... The Flash Flood Watch continues for * A portion of Middle Tennessee, including the following areas, Bedford, Cheatham, Clay, Davidson, Dickson, Giles, Hickman, Houston, Humphreys, Jackson, Lawrence, Lewis, Macon, Marshall, Maury, Montgomery, Perry, Robertson, Rutherford, Smith, Stewart, Sumner, Trousdale, Wayne, Williamson and Wilson. * From Monday evening through late Tuesday night. * Widespread heavy rainfall associated with the remnants of Hurricane Ida are expected to effect portions of Middle TN beginning Monday evening through late Tuesday night. Rainfall amounts between 2" to 4" can be expected with locally higher amounts possible. Prolonged heavy rainfall could lead to flash flooding issues. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 27
640 WGUS64 KOHX 300832 FFAOHX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Nashville TN 332 AM CDT Mon Aug 30 2021 TNZ011-032>034-063>066-077>080-302215- /O.EXA.KOHX.FF.A.0007.210831T0000Z-210901T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pickett-Putnam-Overton-Fentress-Cannon-De Kalb-White-Cumberland- Coffee-Warren-Grundy-Van Buren- Including the cities of Byrdstown, Crossville, Woodbury, McMinnville, Sparta, Cookeville, Coalmont, Livingston, Manchester, Smithville, Altamont, Jamestown, Allardt, Spencer, and Tullahoma 332 AM CDT Mon Aug 30 2021 ...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH LATE TUESDAY NIGHT... The National Weather Service in Nashville has expanded the * Flash Flood Watch to include a portion of Middle Tennessee, including the following areas, Cannon, Coffee, Cumberland, De Kalb, Fentress, Grundy, Overton, Pickett, Putnam, Van Buren, Warren and White. * From this evening through late Tuesday night. * Widespread heavy rainfall associated with the remnants of Hurricane Ida are expected to effect portions of Middle TN beginning tonight through late Tuesday night. Rainfall amounts between 2" to 5" can be expected with locally higher amounts possible. Prolonged heavy rainfall could lead to flash flooding issues. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ TNZ005>010-023>031-056>062-075-093>095-302215- /O.CON.KOHX.FF.A.0007.210831T0000Z-210901T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Houston-Humphreys- Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson-Perry- Hickman-Lewis-Williamson-Maury-Marshall-Rutherford-Bedford-Wayne- Lawrence-Giles- Including the cities of Goodlettsville, Carthage, Smyrna, McEwen, Clarksville, Pulaski, La Vergne, Springfield, Linden, Waverly, Columbia, Brentwood, Nashville, Kingston Springs, Ashland City, Dickson, Waynesboro, Hendersonville, Murfreesboro, New Johnsonville, Lafayette, Franklin, Gainesboro, Hartsville, Lewisburg, Tennessee Ridge, Centerville, Dover, Lawrenceburg, Lobelville, Mount Juliet, Lebanon, Clifton, Celina, South Carthage, Hohenwald, Gordonsville, Shelbyville, Erin, and Gallatin 332 AM CDT Mon Aug 30 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH LATE TUESDAY NIGHT... The Flash Flood Watch continues for * A portion of Middle Tennessee, including the following areas, Bedford, Cheatham, Clay, Davidson, Dickson, Giles, Hickman, Houston, Humphreys, Jackson, Lawrence, Lewis, Macon, Marshall, Maury, Montgomery, Perry, Robertson, Rutherford, Smith, Stewart, Sumner, Trousdale, Wayne, Williamson and Wilson. * From this evening through late Tuesday night. * Widespread heavy rainfall associated with the remnants of Hurricane Ida are expected to effect portions of Middle TN beginning tonight through late Tuesday night. Rainfall amounts between 2" to 5" can be expected with locally higher amounts possible. Prolonged heavy rainfall could lead to flash flooding issues. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Adcock
917 WGUS64 KOHX 301920 FFAOHX Flood Watch National Weather Service Nashville TN 220 PM CDT Mon Aug 30 2021 TNZ005>011-023>034-056>066-075-077>080-093>095-310900- /O.CON.KOHX.FF.A.0007.210831T0000Z-210901T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Pickett-Houston- Humphreys-Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson- Putnam-Overton-Fentress-Perry-Hickman-Lewis-Williamson-Maury- Marshall-Rutherford-Cannon-De Kalb-White-Cumberland-Bedford-Coffee- Warren-Grundy-Van Buren-Wayne-Lawrence-Giles- Including the cities of Goodlettsville, Crossville, Carthage, Smyrna, Lawrenceburg, McEwen, Clarksville, Pulaski, La Vergne, Coalmont, Altamont, Jamestown, Springfield, Linden, Waverly, Lewisburg, Columbia, Brentwood, Tullahoma, Woodbury, McMinnville, Nashville, Spencer, Kingston Springs, Ashland City, Dickson, Waynesboro, South Carthage, Sparta, Smithville, Murfreesboro, Cookeville, New Johnsonville, Livingston, Lafayette, Franklin, Gainesboro, Hartsville, Allardt, Tennessee Ridge, Centerville, Dover, Byrdstown, Lobelville, Mount Juliet, Manchester, Lebanon, Clifton, Celina, Hendersonville, Hohenwald, Gordonsville, Shelbyville, Erin, and Gallatin 220 PM CDT Mon Aug 30 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH LATE TUESDAY NIGHT... The Flash Flood Watch continues for * A portion of Middle Tennessee, including the following areas, Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland, Davidson, De Kalb, Dickson, Fentress, Giles, Grundy, Hickman, Houston, Humphreys, Jackson, Lawrence, Lewis, Macon, Marshall, Maury, Montgomery, Overton, Perry, Pickett, Putnam, Robertson, Rutherford, Smith, Stewart, Sumner, Trousdale, Van Buren, Warren, Wayne, White, Williamson and Wilson. * From 7 PM CDT this evening through late Tuesday night. * Widespread heavy rainfall associated with the remnants of Hurricane Ida are expected to effect portions of Middle TN beginning tonight through late Tuesday night. Rainfall amounts between 2" to 5" can be expected with locally higher amounts possible. Prolonged heavy rainfall could lead to flash flooding issues. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 21
765 WGUS64 KOHX 310832 FFAOHX Flood Watch National Weather Service Nashville TN 332 AM CDT Tue Aug 31 2021 TNZ005>011-023>034-056>066-075-077>080-093>095-312015- /O.CON.KOHX.FF.A.0007.000000T0000Z-210901T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Pickett-Houston- Humphreys-Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson- Putnam-Overton-Fentress-Perry-Hickman-Lewis-Williamson-Maury- Marshall-Rutherford-Cannon-De Kalb-White-Cumberland-Bedford-Coffee- Warren-Grundy-Van Buren-Wayne-Lawrence-Giles- Including the cities of Goodlettsville, Crossville, Carthage, Smyrna, Lawrenceburg, McEwen, Clarksville, Pulaski, La Vergne, Coalmont, Altamont, Jamestown, Springfield, Linden, Waverly, Lewisburg, Columbia, Brentwood, Tullahoma, Woodbury, McMinnville, Nashville, Spencer, Kingston Springs, Ashland City, Dickson, Waynesboro, South Carthage, Sparta, Smithville, Murfreesboro, Cookeville, New Johnsonville, Livingston, Lafayette, Franklin, Gainesboro, Hartsville, Allardt, Tennessee Ridge, Centerville, Dover, Byrdstown, Lobelville, Mount Juliet, Manchester, Lebanon, Clifton, Celina, Hendersonville, Hohenwald, Gordonsville, Shelbyville, Erin, and Gallatin 332 AM CDT Tue Aug 31 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... The Flash Flood Watch continues for * A portion of Middle Tennessee, including the following areas, Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland, Davidson, De Kalb, Dickson, Fentress, Giles, Grundy, Hickman, Houston, Humphreys, Jackson, Lawrence, Lewis, Macon, Marshall, Maury, Montgomery, Overton, Perry, Pickett, Putnam, Robertson, Rutherford, Smith, Stewart, Sumner, Trousdale, Van Buren, Warren, Wayne, White, Williamson and Wilson. * Through late tonight. * Widespread heavy rainfall associated with the Tropical Depression Ida will continue to move across Middle Tennessee through late tonight. Additional rainfall amounts between 2" to 4" expected with locally higher amounts possible. Prolonged heavy rainfall could lead to flash flooding issues. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ JB Wright
486 WGUS64 KOHX 311823 FFAOHX Flood Watch National Weather Service Nashville TN 123 PM CDT Tue Aug 31 2021 TNZ005-006-023>025-056>058-060-093>095-311930- /O.CAN.KOHX.FF.A.0007.000000T0000Z-210901T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Stewart-Montgomery-Houston-Humphreys-Dickson-Perry-Hickman-Lewis- Maury-Wayne-Lawrence-Giles- Including the cities of Linden, Waverly, Columbia, Lawrenceburg, Lobelville, McEwen, Clifton, Clarksville, Erin, New Johnsonville, Pulaski, Hohenwald, Dickson, Waynesboro, Centerville, Tennessee Ridge, and Dover 123 PM CDT Tue Aug 31 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for a portion of Middle Tennessee, including the following areas, Dickson, Giles, Hickman, Houston, Humphreys, Lawrence, Lewis, Maury, Montgomery, Perry, Stewart and Wayne has been cancelled. The Flash Flood threat has diminished with rain moving out of the area this afternoon. Some minor flooding will be possible, but the Flash Flood Watch has been cancelled. $$ TNZ007>011-026>034-059-061>066-075-077>080-010600- /O.CON.KOHX.FF.A.0007.000000T0000Z-210901T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Robertson-Sumner-Macon-Clay-Pickett-Cheatham-Davidson-Wilson- Trousdale-Smith-Jackson-Putnam-Overton-Fentress-Williamson-Marshall- Rutherford-Cannon-De Kalb-White-Cumberland-Bedford-Coffee-Warren- Grundy-Van Buren- Including the cities of Goodlettsville, Crossville, Carthage, Smyrna, La Vergne, Cookeville, Coalmont, Altamont, Jamestown, Springfield, Murfreesboro, Lewisburg, Brentwood, Tullahoma, Woodbury, McMinnville, Nashville, Kingston Springs, Ashland City, Hendersonville, Sparta, Livingston, Lafayette, Franklin, Gainesboro, Hartsville, Allardt, Spencer, Byrdstown, Mount Juliet, Manchester, Lebanon, Celina, South Carthage, Smithville, Gordonsville, Shelbyville, and Gallatin 123 PM CDT Tue Aug 31 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY... The Flash Flood Watch continues for * A portion of Middle Tennessee, including the following areas, Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland, Davidson, De Kalb, Fentress, Grundy, Jackson, Macon, Marshall, Overton, Pickett, Putnam, Robertson, Rutherford, Smith, Sumner, Trousdale, Van Buren, Warren, White, Williamson and Wilson. * Until 1 AM CDT Wednesday. * Widespread heavy rainfall associated with the Tropical Depression Ida will continue to move across Middle Tennessee through late tonight. Additional rainfall amounts between 1" to 2" will be possible. Prolonged heavy rainfall could lead to flash flooding issues. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Barnwell
951 WGUS64 KOHX 312300 FFAOHX Flood Watch National Weather Service Nashville TN 600 PM CDT Tue Aug 31 2021 TNZ007>011-026>034-059-061>066-075-077>080-010000- /O.CAN.KOHX.FF.A.0007.000000T0000Z-210901T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Robertson-Sumner-Macon-Clay-Pickett-Cheatham-Davidson-Wilson- Trousdale-Smith-Jackson-Putnam-Overton-Fentress-Williamson-Marshall- Rutherford-Cannon-De Kalb-White-Cumberland-Bedford-Coffee-Warren- Grundy-Van Buren- Including the cities of Goodlettsville, Crossville, Carthage, Smyrna, La Vergne, Cookeville, Coalmont, Altamont, Jamestown, Springfield, Murfreesboro, Lewisburg, Brentwood, Tullahoma, Woodbury, McMinnville, Nashville, Kingston Springs, Ashland City, Hendersonville, Sparta, Livingston, Lafayette, Franklin, Gainesboro, Hartsville, Allardt, Spencer, Byrdstown, Mount Juliet, Manchester, Lebanon, Celina, South Carthage, Smithville, Gordonsville, Shelbyville, and Gallatin 600 PM CDT Tue Aug 31 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for a portion of Middle Tennessee, including the following areas, Bedford, Cannon, Cheatham, Clay, Coffee, Cumberland, Davidson, De Kalb, Fentress, Grundy, Jackson, Macon, Marshall, Overton, Pickett, Putnam, Robertson, Rutherford, Smith, Sumner, Trousdale, Van Buren, Warren, White, Williamson and Wilson has been cancelled. The Flash Flood Watch is cancelled. Please continue to heed remaining road closures. $$ 13
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 5:26 PM CDT | Special Weather Statement | OHX | Williamson | 34 min |
| Aug 29, 6:32 PM CDT | Special Weather Statement | OHX | Lawrence, Wayne | 43 min |
| Aug 29, 6:35 PM CDT | Areal Flood Advisory | OHX | Lawrence, Wayne | 55 min |
Nearby
Flash Flood Watches in Tennessee, 2021Every flash flood watch 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.