Alert archive / Tennessee / Heat Advisories in 2021
Heat Advisory 2, NWS Nashville, TN
NWS Nashville, TN issued this heat advisory at Jul 28, 2021, 2:30 PM CDT for 26 counties in Tennessee. It took effect at Jul 29, 2021, 11:00 AM CDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Jul 28, 2021, 2:30 PM CDT (19:30 UTC)
- In effect from
- Jul 29, 2021, 11:00 AM CDT
- Expired
- Jul 29, 2021, 6:43 PM CDT
- In force
- 8 hr
- Issued by
- NWS Nashville, TN
All 26 counties
Bedford County, TN, Cheatham County, TN, Clay County, TN, Davidson County, TN, Dickson County, TN, Giles 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, Perry County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Wayne County, TN, Williamson County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 41 km from the middle of the area, began a volume at 19:32 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 12:00Z, 7.5 hours before the alert went out and 31 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
- 338 J/kg
- Mixed-layer CIN
- -187 J/kg
- Mixed-layer LCL
- 1407 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
226 WWUS74 KOHX 281930 NPWOHX URGENT - WEATHER MESSAGE National Weather Service Nashville TN 230 PM CDT Wed Jul 28 2021 TNZ005>008-023>028-056>062-093>095-290330- /O.NEW.KOHX.HT.Y.0002.210729T1600Z-210730T0000Z/ Stewart-Montgomery-Robertson-Sumner-Houston-Humphreys-Dickson- Cheatham-Davidson-Wilson-Perry-Hickman-Lewis-Williamson-Maury- Marshall-Rutherford-Wayne-Lawrence-Giles- Including the cities of Dover, Clarksville, Springfield, Hendersonville, Gallatin, Goodlettsville, Erin, Tennessee Ridge, Waverly, New Johnsonville, McEwen, Dickson, Ashland City, Kingston Springs, Nashville, Lebanon, Mount Juliet, Linden, Lobelville, Centerville, Hohenwald, Franklin, Brentwood, Columbia, Lewisburg, Murfreesboro, Smyrna, La Vergne, Clifton, Waynesboro, Lawrenceburg, and Pulaski 230 PM CDT Wed Jul 28 2021 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 7 PM CDT THURSDAY... * WHAT...Heat index values up to 106 expected. * WHERE...Portions of Middle Tennessee. * WHEN...From 11 AM to 7 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ 10
5 follow-up statements
309 WWUS74 KOHX 290348 NPWOHX URGENT - WEATHER MESSAGE National Weather Service Nashville TN 1048 PM CDT Wed Jul 28 2021 TNZ005>008-023>028-056>062-093>095-291200- /O.CON.KOHX.HT.Y.0002.210729T1600Z-210730T0000Z/ Stewart-Montgomery-Robertson-Sumner-Houston-Humphreys-Dickson- Cheatham-Davidson-Wilson-Perry-Hickman-Lewis-Williamson-Maury- Marshall-Rutherford-Wayne-Lawrence-Giles- Including the cities of Dover, Clarksville, Springfield, Hendersonville, Gallatin, Goodlettsville, Erin, Tennessee Ridge, Waverly, New Johnsonville, McEwen, Dickson, Ashland City, Kingston Springs, Nashville, Lebanon, Mount Juliet, Linden, Lobelville, Centerville, Hohenwald, Franklin, Brentwood, Columbia, Lewisburg, Murfreesboro, Smyrna, La Vergne, Clifton, Waynesboro, Lawrenceburg, and Pulaski 1048 PM CDT Wed Jul 28 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM TO 7 PM CDT THURSDAY... * WHAT...Heat index values up to 106 expected. * WHERE...Portions of Middle Tennessee. * WHEN...From 11 AM to 7 PM CDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
915 WWUS74 KOHX 290823 NPWOHX URGENT - WEATHER MESSAGE National Weather Service Nashville TN 323 AM CDT Thu Jul 29 2021 TNZ009-010-029>031-075-291300- /O.NEW.KOHX.FG.Y.0006.210729T0823Z-210729T1300Z/ /O.EXA.KOHX.HT.Y.0002.210729T1600Z-210730T0000Z/ Macon-Clay-Trousdale-Smith-Jackson-Bedford- Including the cities of Lafayette, Celina, Hartsville, Carthage, South Carthage, Gordonsville, Gainesboro, and Shelbyville 323 AM CDT Thu Jul 29 2021 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING... ...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT THIS EVENING... * WHAT...For the Dense Fog Advisory, visibility less than one quarter of a mile in dense fog. For the Heat Advisory, heat index values up to around 105 expected. * WHERE...Macon, Clay, Trousdale, Smith, Jackson and Bedford Counties. * WHEN...For the Dense Fog Advisory, until 8 AM CDT this morning. For the Heat Advisory, from 11 AM this morning to 7 PM CDT this evening. * IMPACTS...Hazardous driving conditions due to low visibility. Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ TNZ005>008-023>028-056>062-093>095-291300- /O.NEW.KOHX.FG.Y.0006.210729T0823Z-210729T1300Z/ /O.CON.KOHX.HT.Y.0002.210729T1600Z-210730T0000Z/ Stewart-Montgomery-Robertson-Sumner-Houston-Humphreys-Dickson- Cheatham-Davidson-Wilson-Perry-Hickman-Lewis-Williamson-Maury- Marshall-Rutherford-Wayne-Lawrence-Giles- Including the cities of Dover, Clarksville, Springfield, Hendersonville, Gallatin, Goodlettsville, Erin, Tennessee Ridge, Waverly, New Johnsonville, McEwen, Dickson, Ashland City, Kingston Springs, Nashville, Lebanon, Mount Juliet, Linden, Lobelville, Centerville, Hohenwald, Franklin, Brentwood, Columbia, Lewisburg, Murfreesboro, Smyrna, La Vergne, Clifton, Waynesboro, Lawrenceburg, and Pulaski 323 AM CDT Thu Jul 29 2021 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING... ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT THIS EVENING... * WHAT...For the Dense Fog Advisory, visibility less than one quarter of a mile in dense fog. For the Heat Advisory, heat index values to around 106 expected. * WHERE...Portions of Middle Tennessee. * WHEN...For the Dense Fog Advisory, until 8 AM CDT this morning. For the Heat Advisory, from 11 AM this morning to 7 PM CDT this evening. * IMPACTS...Hazardous driving conditions due to low visibility. Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ TNZ011-032>034-063>066-077>080-291300- /O.NEW.KOHX.FG.Y.0006.210729T0823Z-210729T1300Z/ Pickett-Putnam-Overton-Fentress-Cannon-De Kalb-White-Cumberland- Coffee-Warren-Grundy-Van Buren- Including the cities of Byrdstown, Cookeville, Livingston, Jamestown, Allardt, Woodbury, Smithville, Sparta, Crossville, Tullahoma, Manchester, McMinnville, Altamont, Coalmont, and Spencer 323 AM CDT Thu Jul 29 2021 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Visibility less than one quarter of a mile in dense fog. * WHERE...Portions of Middle Tennessee including the Cumberland Plateau Region. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Hazardous driving conditions due to low visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ JB Wright
852 WWUS74 KOHX 291247 NPWOHX URGENT - WEATHER MESSAGE National Weather Service Nashville TN 747 AM CDT Thu Jul 29 2021 TNZ005>010-023>031-056>062-075-093>095-300000- /O.CAN.KOHX.FG.Y.0006.000000T0000Z-210729T1300Z/ /O.CON.KOHX.HT.Y.0002.210729T1600Z-210730T0000Z/ 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 Dover, Clarksville, Springfield, Hendersonville, Gallatin, Goodlettsville, Lafayette, Celina, Erin, Tennessee Ridge, Waverly, New Johnsonville, McEwen, Dickson, Ashland City, Kingston Springs, Nashville, Lebanon, Mount Juliet, Hartsville, Carthage, South Carthage, Gordonsville, Gainesboro, Linden, Lobelville, Centerville, Hohenwald, Franklin, Brentwood, Columbia, Lewisburg, Murfreesboro, Smyrna, La Vergne, Shelbyville, Clifton, Waynesboro, Lawrenceburg, and Pulaski 747 AM CDT Thu Jul 29 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT THIS EVENING... ...DENSE FOG ADVISORY IS CANCELLED... * WHAT...Heat index values up to around 105 expected. * WHERE...West of the Cumberland Plateau. * WHEN...From 11 AM this morning to 7 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ TNZ011-032>034-063>066-077>080-291400- /O.CAN.KOHX.FG.Y.0006.000000T0000Z-210729T1300Z/ Pickett-Putnam-Overton-Fentress-Cannon-De Kalb-White-Cumberland- Coffee-Warren-Grundy-Van Buren- Including the cities of Byrdstown, Cookeville, Livingston, Jamestown, Allardt, Woodbury, Smithville, Sparta, Crossville, Tullahoma, Manchester, McMinnville, Altamont, Coalmont, and Spencer 747 AM CDT Thu Jul 29 2021 ...DENSE FOG ADVISORY IS CANCELLED... While a few spots by area waterways may continue to have fog until around 9 am CDT, the dense fog is lifting. $$ 27
513 WWUS74 KOHX 291858 NPWOHX URGENT - WEATHER MESSAGE National Weather Service Nashville TN 158 PM CDT Thu Jul 29 2021 TNZ056>062-075-093>095-300000- /O.NEW.KOHX.HT.Y.0003.210730T1600Z-210730T2300Z/ /O.CON.KOHX.HT.Y.0002.000000T0000Z-210730T0000Z/ Perry-Hickman-Lewis-Williamson-Maury-Marshall-Rutherford-Bedford- Wayne-Lawrence-Giles- Including the cities of Linden, Lobelville, Centerville, Hohenwald, Franklin, Brentwood, Columbia, Lewisburg, Murfreesboro, Smyrna, La Vergne, Shelbyville, Clifton, Waynesboro, Lawrenceburg, and Pulaski 158 PM CDT Thu Jul 29 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 6 PM CDT FRIDAY... * WHAT...For this afternoon's Heat Advisory, heat index values up to 109. For the tommorrow's Heat Advisory, heat index values up to 107 expected. * WHERE...Portions of Middle Tennessee. * WHEN...For this afternoon's Heat Advisory, until 7 PM CDT this evening. For tomorrow's Heat Advisory, from 11 AM to 6 PM CDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ TNZ005>010-023>031-300000- /O.CON.KOHX.HT.Y.0002.000000T0000Z-210730T0000Z/ Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Houston-Humphreys- Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson- Including the cities of Dover, Clarksville, Springfield, Hendersonville, Gallatin, Goodlettsville, Lafayette, Celina, Erin, Tennessee Ridge, Waverly, New Johnsonville, McEwen, Dickson, Ashland City, Kingston Springs, Nashville, Lebanon, Mount Juliet, Hartsville, Carthage, South Carthage, Gordonsville, and Gainesboro 158 PM CDT Thu Jul 29 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Heat index values up to around 105 to 110 expected. * WHERE...West of the Cumberland Plateau. * WHEN...From 11 AM this morning to 7 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ 27
127 WWUS74 KOHX 292343 NPWOHX URGENT - WEATHER MESSAGE National Weather Service Nashville TN 643 PM CDT Thu Jul 29 2021 TNZ056>062-075-093>095-301200- /O.CAN.KOHX.HT.Y.0002.000000T0000Z-210730T0000Z/ /O.CON.KOHX.HT.Y.0003.210730T1600Z-210730T2300Z/ Perry-Hickman-Lewis-Williamson-Maury-Marshall-Rutherford-Bedford- Wayne-Lawrence-Giles- Including the cities of Linden, Lobelville, Centerville, Hohenwald, Franklin, Brentwood, Columbia, Lewisburg, Murfreesboro, Smyrna, La Vergne, Shelbyville, Clifton, Waynesboro, Lawrenceburg, and Pulaski 643 PM CDT Thu Jul 29 2021 ...HEAT ADVISORY IN EFFECT ON FRIDAY FROM 11 AM TO 6 PM CDT... ...HEAT ADVISORY FOR TODAY HAS BEEN CANCELLED... * WHAT...Heat index values as high as 107 expected. * WHERE...Southwest portions of Middle Tennessee. * WHEN...From 11 AM to 6 PM CDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ TNZ005>010-023>031-300045- /O.CAN.KOHX.HT.Y.0002.000000T0000Z-210730T0000Z/ Stewart-Montgomery-Robertson-Sumner-Macon-Clay-Houston-Humphreys- Dickson-Cheatham-Davidson-Wilson-Trousdale-Smith-Jackson- Including the cities of Dover, Clarksville, Springfield, Hendersonville, Gallatin, Goodlettsville, Lafayette, Celina, Erin, Tennessee Ridge, Waverly, New Johnsonville, McEwen, Dickson, Ashland City, Kingston Springs, Nashville, Lebanon, Mount Juliet, Hartsville, Carthage, South Carthage, Gordonsville, and Gainesboro 643 PM CDT Thu Jul 29 2021 ...HEAT ADVISORY FOR TODAY HAS BEEN CANCELLED... Temperatures will continue to fall this evening with heat index values dropping, and the heat advisory has been cancelled. $$ Shamburger
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 2:47 AM CDT | Dense Fog Advisory | OHX | Bedford, Cannon, Coffee, Cumberland, DeKalb, Fentress and 17 more | 5 hr |
Nearby
Heat Advisories in Tennessee, 2021Every heat advisory 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.