Alert archive / Tennessee / Frost Advisories in 2021
Frost Advisory 7, NWS Morristown, TN
NWS Morristown, TN issued this frost advisory at Nov 2, 2021, 2:55 AM CDT for 12 counties in Tennessee. It took effect at Nov 2, 2021, 11:00 PM CDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Nov 2, 2021, 2:55 AM CDT (07:55 UTC)
- In effect from
- Nov 2, 2021, 11:00 PM CDT
- Expired
- Nov 3, 2021, 9:00 AM CDT
- In force
- 10 hr
- Issued by
- NWS Morristown, TN
Counties Bledsoe County, TN, Campbell County, TN, Claiborne County, TN, Cocke County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Jefferson County, TN, Morgan County, TN, Scott County, TN, Sevier County, TN, Union County, TN
The radar
The Knoxville radar (KMRX), 37 km from the middle of the area, began a volume at 07:59 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, 7.9 hours before the alert went out and 251 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1822 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
313 WWUS74 KMRX 020755 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 355 AM EDT Tue Nov 2 2021 TNZ015>018-044>047-VAZ001-002-005-006-008-022000- /O.NEW.KMRX.FZ.W.0006.211103T0400Z-211103T1400Z/ Hancock-Hawkins-Sullivan-Johnson-Washington-Unicoi- Northwest Carter-Southeast Carter-Lee-Wise-Scott-Russell- Including the cities of Evanston, Sneedville, Treadway, Kyles Ford, Mooresburg, Kingsport, Bristol TN, South Holston Dam, Doeville, Mountain City, Neva, Shady Valley, Trade, Laurel Bloomery, Johnson City, Erwin, Unicoi, Limestone Cove, Elizabethton, Hampton, Rose Hill, Big Stone Gap, Norton, Wise, Coeburn, Appalachia, Pardee, Hiltons, Hansonville, Lebanon, Dye, Castlewood, Honaker, Rosedale, Benhams, Bristol VA, and Abingdon 355 AM EDT Tue Nov 2 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Portions of east Tennessee and southwest Virginia. * WHEN...From midnight tonight to 10 AM EDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Those that have in-ground sprinkler systems should drain them and cover above-ground pipes to protect them from freezing. && $$ TNZ041-043-072-074-022000- /O.NEW.KMRX.FZ.W.0006.211103T0400Z-211103T1400Z/ Cocke Smoky Mountains-Southeast Greene-Blount Smoky Mountains- Sevier Smoky Mountains- Including the cities of Hartford, Cedar Creek, Cades Cove, Elkmont, and Gatlinburg 355 AM EDT Tue Nov 2 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 32 expected. * WHERE...Cocke Smoky Mountains, Southeast Greene, Blount Smoky Mountains and Sevier Smoky Mountains Counties. * WHEN...From midnight tonight to 10 AM EDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Those that have in-ground sprinkler systems should drain them and cover above-ground pipes to protect them from freezing. && $$ TNZ012>014-035-042-082-022000- /O.NEW.KMRX.FR.Y.0007.211103T0400Z-211103T1400Z/ Scott-Campbell-Claiborne-Morgan-Northwest Greene-Bledsoe- Including the cities of Big South Fork National, Oneida, Smokey Junction, Elgin, Huntsville, Norma, Slick Rock, Fincastle, La Follette, Elk Valley, Jellico, White Oak, Caryville, Royal Blue, Lone Mountain, Sandlick, Springdale, Arthur, Harrogate-Shawanee, Clairfield, Howard Quarter, Pine Orchard, High Point, Petros, Greeneville, Old Cumberland, Palio, Melvine, Mount Crest, Pikeville, and Brayton 355 AM EDT Tue Nov 2 2021 /255 AM CDT Tue Nov 2 2021/ ...FROST ADVISORY IN EFFECT FROM MIDNIGHT EDT /11 PM CDT/ TONIGHT TO 10 AM EDT /9 AM CDT/ WEDNESDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of east Tennessee. * WHEN...From midnight EDT /11 PM CDT/ tonight to 10 AM EDT /9 AM CDT/ Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ TNZ037>040-070-073-022000- /O.NEW.KMRX.FR.Y.0007.211103T0400Z-211103T1400Z/ Union-Grainger-Hamblen-Northwest Cocke-Jefferson-North Sevier- Including the cities of Maynardville, Norris Lake, Paulette, Rose Hill, Sharps Chapel, Luttrell, Bean Station, Alpha, Morristown, Russellville, Bybee, Newport, Jefferson City, Strawberry Plains, Chestnut Hill, Dandridge, White Pine, Harrisburg, Kodak, McMahan, Sevierville, Seymour, and Pigeon Forge 355 AM EDT Tue Nov 2 2021 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT WEDNESDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of east Tennessee. * WHEN...From midnight tonight to 10 AM EDT Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
3 follow-up statements
798 WWUS74 KMRX 021932 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 332 PM EDT Tue Nov 2 2021 TNZ015>018-044>047-VAZ001-002-005-006-008-030345- /O.CON.KMRX.FZ.W.0006.211103T0400Z-211103T1400Z/ Hancock-Hawkins-Sullivan-Johnson-Washington-Unicoi- Northwest Carter-Southeast Carter-Lee-Wise-Scott-Russell- Including the cities of Evanston, Sneedville, Treadway, Kyles Ford, Mooresburg, Kingsport, Bristol TN, South Holston Dam, Doeville, Mountain City, Neva, Shady Valley, Trade, Laurel Bloomery, Johnson City, Erwin, Unicoi, Limestone Cove, Elizabethton, Hampton, Rose Hill, Big Stone Gap, Norton, Wise, Coeburn, Appalachia, Pardee, Hiltons, Hansonville, Lebanon, Dye, Castlewood, Honaker, Rosedale, Benhams, Bristol VA, and Abingdon 332 PM EDT Tue Nov 2 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Portions of east Tennessee and southwest Virginia. * WHEN...From midnight tonight to 10 AM EDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Those that have in-ground sprinkler systems should drain them and cover above-ground pipes to protect them from freezing. && $$ TNZ041-043-072-074-030345- /O.CON.KMRX.FZ.W.0006.211103T0400Z-211103T1400Z/ Cocke Smoky Mountains-Southeast Greene-Blount Smoky Mountains- Sevier Smoky Mountains- Including the cities of Hartford, Cedar Creek, Cades Cove, Elkmont, and Gatlinburg 332 PM EDT Tue Nov 2 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 32 expected. * WHERE...Cocke Smoky Mountains, Southeast Greene, Blount Smoky Mountains and Sevier Smoky Mountains Counties. * WHEN...From midnight tonight to 10 AM EDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Those that have in-ground sprinkler systems should drain them and cover above-ground pipes to protect them from freezing. && $$ TNZ012>014-035-042-082-030345- /O.CON.KMRX.FR.Y.0007.211103T0400Z-211103T1400Z/ Scott-Campbell-Claiborne-Morgan-Northwest Greene-Bledsoe- Including the cities of Big South Fork National, Oneida, Smokey Junction, Elgin, Huntsville, Norma, Slick Rock, Fincastle, La Follette, Elk Valley, Jellico, White Oak, Caryville, Royal Blue, Lone Mountain, Sandlick, Springdale, Arthur, Harrogate-Shawanee, Clairfield, Howard Quarter, Pine Orchard, High Point, Petros, Greeneville, Old Cumberland, Palio, Melvine, Mount Crest, Pikeville, and Brayton 332 PM EDT Tue Nov 2 2021 /232 PM CDT Tue Nov 2 2021/ ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT EDT /11 PM CDT/ TONIGHT TO 10 AM EDT /9 AM CDT/ WEDNESDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of east Tennessee. * WHEN...From midnight EDT /11 PM CDT/ tonight to 10 AM EDT /9 AM CDT/ Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ TNZ037>040-070-073-030345- /O.CON.KMRX.FR.Y.0007.211103T0400Z-211103T1400Z/ Union-Grainger-Hamblen-Northwest Cocke-Jefferson-North Sevier- Including the cities of Maynardville, Norris Lake, Paulette, Rose Hill, Sharps Chapel, Luttrell, Bean Station, Alpha, Morristown, Russellville, Bybee, Newport, Jefferson City, Strawberry Plains, Chestnut Hill, Dandridge, White Pine, Harrisburg, Kodak, McMahan, Sevierville, Seymour, and Pigeon Forge 332 PM EDT Tue Nov 2 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT WEDNESDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of east Tennessee. * WHEN...From midnight tonight to 10 AM EDT Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
759 WWUS74 KMRX 030354 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 1154 PM EDT Tue Nov 2 2021 TNZ015>018-044>047-VAZ001-002-005-006-008-031200- /O.CON.KMRX.FZ.W.0006.211103T0400Z-211103T1400Z/ Hancock-Hawkins-Sullivan-Johnson-Washington-Unicoi- Northwest Carter-Southeast Carter-Lee-Wise-Scott-Russell- Including the cities of Evanston, Sneedville, Treadway, Kyles Ford, Mooresburg, Kingsport, Bristol TN, South Holston Dam, Doeville, Mountain City, Neva, Shady Valley, Trade, Laurel Bloomery, Johnson City, Erwin, Unicoi, Limestone Cove, Elizabethton, Hampton, Rose Hill, Big Stone Gap, Norton, Wise, Coeburn, Appalachia, Pardee, Hiltons, Hansonville, Lebanon, Dye, Castlewood, Honaker, Rosedale, Benhams, Bristol VA, and Abingdon 1154 PM EDT Tue Nov 2 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Portions of east Tennessee and southwest Virginia. * WHEN...From midnight tonight to 10 AM EDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Those that have in-ground sprinkler systems should drain them and cover above-ground pipes to protect them from freezing. && $$ TNZ041-043-072-074-031200- /O.CON.KMRX.FZ.W.0006.211103T0400Z-211103T1400Z/ Cocke Smoky Mountains-Southeast Greene-Blount Smoky Mountains- Sevier Smoky Mountains- Including the cities of Hartford, Cedar Creek, Cades Cove, Elkmont, and Gatlinburg 1154 PM EDT Tue Nov 2 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 32 expected. * WHERE...Cocke Smoky Mountains, Southeast Greene, Blount Smoky Mountains and Sevier Smoky Mountains Counties. * WHEN...From midnight tonight to 10 AM EDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Those that have in-ground sprinkler systems should drain them and cover above-ground pipes to protect them from freezing. && $$ TNZ012>014-035-042-082-031200- /O.CON.KMRX.FR.Y.0007.211103T0400Z-211103T1400Z/ Scott-Campbell-Claiborne-Morgan-Northwest Greene-Bledsoe- Including the cities of Big South Fork National, Oneida, Smokey Junction, Elgin, Huntsville, Norma, Slick Rock, Fincastle, La Follette, Elk Valley, Jellico, White Oak, Caryville, Royal Blue, Lone Mountain, Sandlick, Springdale, Arthur, Harrogate-Shawanee, Clairfield, Howard Quarter, Pine Orchard, High Point, Petros, Greeneville, Old Cumberland, Palio, Melvine, Mount Crest, Pikeville, and Brayton 1154 PM EDT Tue Nov 2 2021 /1054 PM CDT Tue Nov 2 2021/ ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT /9 AM CDT/ WEDNESDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of east Tennessee. * WHEN...From midnight EDT /11 PM CDT/ tonight to 10 AM EDT /9 AM CDT/ Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ TNZ037>040-070-073-031200- /O.CON.KMRX.FR.Y.0007.211103T0400Z-211103T1400Z/ Union-Grainger-Hamblen-Northwest Cocke-Jefferson-North Sevier- Including the cities of Maynardville, Norris Lake, Paulette, Rose Hill, Sharps Chapel, Luttrell, Bean Station, Alpha, Morristown, Russellville, Bybee, Newport, Jefferson City, Strawberry Plains, Chestnut Hill, Dandridge, White Pine, Harrisburg, Kodak, McMahan, Sevierville, Seymour, and Pigeon Forge 1154 PM EDT Tue Nov 2 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT WEDNESDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of east Tennessee. * WHEN...From midnight tonight to 10 AM EDT Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
981 WWUS74 KMRX 030802 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 402 AM EDT Wed Nov 3 2021 TNZ016>018-041-043>047-072-074-VAZ008-030915- /O.CAN.KMRX.FZ.W.0006.000000T0000Z-211103T1400Z/ Hawkins-Sullivan-Johnson-Cocke Smoky Mountains-Southeast Greene- Washington-Unicoi-Northwest Carter-Southeast Carter- Blount Smoky Mountains-Sevier Smoky Mountains- 402 AM EDT Wed Nov 3 2021 ...FREEZE WARNING IS CANCELLED... Cloud cover has kept temperatures above freezing, so the freeze warning this morning has been canceled. Patchy frost will still be possible this morning. $$ TNZ038>040-042-070-073-030915- /O.CAN.KMRX.FR.Y.0007.000000T0000Z-211103T1400Z/ Grainger-Hamblen-Northwest Cocke-Northwest Greene-Jefferson- North Sevier- 402 AM EDT Wed Nov 3 2021 ...FROST ADVISORY IS CANCELLED... Cloud cover has kept temperatures warm enough to limit frost formation, so the frost advisory has been canceled. $$ TNZ015-VAZ001-002-005-006-031700- /O.NEW.KMRX.FZ.W.0007.211104T0400Z-211104T1400Z/ /O.CON.KMRX.FZ.W.0006.000000T0000Z-211103T1400Z/ Hancock-Lee-Wise-Scott-Russell- Including the cities of Evanston, Sneedville, Kyles Ford, Rose Hill, Big Stone Gap, Norton, Wise, Coeburn, Appalachia, Pardee, Hiltons, Hansonville, Lebanon, Dye, Castlewood, Honaker, and Rosedale 402 AM EDT Wed Nov 3 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT THURSDAY... * WHAT...sub-freezing temperatures as low as 30 expected. * WHERE...In Tennessee, Hancock County. In Virginia, Lee, Wise, Scott and Russell Counties. * WHEN...For the first Freeze Warning, until 10 AM EDT this morning. For the second Freeze Warning, from midnight tonight to 10 AM EDT Thursday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Those that have in-ground sprinkler systems should drain them and cover above-ground pipes to protect them from freezing. && $$ TNZ012>014-035-031700- /O.NEW.KMRX.FZ.W.0007.211104T0400Z-211104T1400Z/ /O.CON.KMRX.FR.Y.0007.000000T0000Z-211103T1400Z/ Scott-Campbell-Claiborne-Morgan- Including the cities of Big South Fork National, Oneida, Smokey Junction, Elgin, Huntsville, Norma, Slick Rock, Fincastle, La Follette, Elk Valley, Jellico, White Oak, Caryville, Royal Blue, Lone Mountain, Sandlick, Springdale, Arthur, Harrogate-Shawanee, Clairfield, Howard Quarter, Pine Orchard, High Point, and Petros 402 AM EDT Wed Nov 3 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT THURSDAY... * WHAT...sub-freezing temperatures as low as 32 expected. * WHERE...Scott, Campbell, Claiborne and Morgan Counties. * WHEN...For the Freeze Warning, from midnight tonight to 10 AM EDT Thursday. For the Frost Advisory, until 10 AM EDT this morning. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Those that have in-ground sprinkler systems should drain them and cover above-ground pipes to protect them from freezing. && $$ TNZ037-082-031400- /O.CON.KMRX.FR.Y.0007.000000T0000Z-211103T1400Z/ Union-Bledsoe- Including the cities of Maynardville, Norris Lake, Paulette, Rose Hill, Sharps Chapel, Luttrell, Old Cumberland, Palio, Melvine, Mount Crest, Pikeville, and Brayton 402 AM EDT Wed Nov 3 2021 /302 AM CDT Wed Nov 3 2021/ ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT /9 AM CDT/ THIS MORNING... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Union and Bledsoe Counties. * WHEN...Until 10 AM EDT /9 AM CDT/ this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 2, 2:55 AM CDT | Freeze Warning | MRX | Blount, Carter, Cocke, Greene, Hancock, Hawkins and 5 more | 30 hr |
Nearby
Frost Advisories in Tennessee, 2021Every frost 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.