Alert archive / Tennessee / Frost Advisories in 2021
Frost Advisory 8, NWS Morristown, TN
NWS Morristown, TN issued this frost advisory at Nov 3, 2021, 4:02 PM EDT for Anderson County, Union County, Tennessee; Washington County, City of Bristol, Virginia. It took effect at Nov 4, 2021, 12:00 AM EDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Nov 3, 2021, 4:02 PM EDT (20:02 UTC)
- In effect from
- Nov 4, 2021, 12:00 AM EDT
- Expired
- Nov 4, 2021, 10:00 AM EDT
- In force
- 10 hr
- Issued by
- NWS Morristown, TN
Counties Anderson County, TN, Union County, TN, City of Bristol, VA, Washington County, VA
The radar
The Knoxville radar (KMRX), 43 km from the middle of the area, began a volume at 20:01 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.0 hours before the alert went out and 285 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
- 1747 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- -66 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
328 WWUS74 KMRX 032002 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 402 PM EDT Wed Nov 3 2021 TNZ012>015-035-VAZ001-002-005-006-040415- /O.CON.KMRX.FZ.W.0007.211104T0400Z-211104T1400Z/ Scott-Campbell-Claiborne-Hancock-Morgan-Lee-Wise-Russell- 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, Evanston, Sneedville, Kyles Ford, Pine Orchard, High Point, Petros, Rose Hill, Big Stone Gap, Norton, Wise, Coeburn, Appalachia, Pardee, Hiltons, Hansonville, Lebanon, Dye, Castlewood, Honaker, and Rosedale 402 PM EDT Wed Nov 3 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT THURSDAY... * WHAT...Sub-freezing temperatures as low as 32 expected. * WHERE...Portions of east Tennessee and southwest Virginia. * WHEN...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. && $$ TNZ036-037-VAZ008-040415- /O.NEW.KMRX.FR.Y.0008.211104T0400Z-211104T1400Z/ Anderson-Union-Washington- Including the cities of Clinton, Maynardville, Norris Lake, Paulette, Rose Hill, Sharps Chapel, Luttrell, Benhams, Bristol VA, and Abingdon 402 PM EDT Wed Nov 3 2021 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT THURSDAY... * WHAT...Temperatures as low as 36 will result in frost formation. * WHERE...In Tennessee, Anderson and Union Counties. In Virginia, Washington County. * WHEN...From midnight tonight to 10 AM EDT Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
2 follow-up statements
620 WWUS74 KMRX 040145 AAA NPWMRX URGENT - WEATHER MESSAGE...UPDATED National Weather Service Morristown TN 945 PM EDT Wed Nov 3 2021 TNZ012>015-035-VAZ001-002-005-006-041000- /O.CON.KMRX.FZ.W.0007.211104T0400Z-211104T1400Z/ Scott-Campbell-Claiborne-Hancock-Morgan-Lee-Wise-Russell- 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, Evanston, Sneedville, Kyles Ford, Pine Orchard, High Point, Petros, Rose Hill, Big Stone Gap, Norton, Wise, Coeburn, Appalachia, Pardee, Hiltons, Hansonville, Lebanon, Dye, Castlewood, Honaker, and Rosedale 945 PM EDT Wed Nov 3 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT THURSDAY... * WHAT...Sub-freezing temperatures as low as 32 expected. * WHERE...Portions of east Tennessee and southwest Virginia. * WHEN...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. && $$ TNZ036-037-VAZ008-041000- /O.CON.KMRX.FR.Y.0008.211104T0400Z-211104T1400Z/ Anderson-Union-Washington- Including the cities of Clinton, Maynardville, Norris Lake, Paulette, Rose Hill, Sharps Chapel, Luttrell, Benhams, Bristol VA, and Abingdon 945 PM EDT Wed Nov 3 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THURSDAY... * WHAT...Temperatures as low as 36 will result in frost formation. * WHERE...In Tennessee, Anderson and Union Counties. In Virginia, Washington County. * WHEN...From midnight tonight to 10 AM EDT Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
321 WWUS74 KMRX 040659 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 259 AM EDT Thu Nov 4 2021 TNZ012>015-035-VAZ001-002-005-006-041800- /O.NEW.KMRX.FZ.W.0008.211105T0400Z-211105T1400Z/ /O.CON.KMRX.FZ.W.0007.000000T0000Z-211104T1400Z/ Scott-Campbell-Claiborne-Hancock-Morgan-Lee-Wise-Russell- 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, Evanston, Sneedville, Treadway, Kyles Ford, Pine Orchard, High Point, Petros, Rose Hill, Big Stone Gap, Norton, Wise, Coeburn, Appalachia, Pardee, Hiltons, Hansonville, Lebanon, Dye, Castlewood, Honaker, and Rosedale 259 AM EDT Thu Nov 4 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT FRIDAY... * WHAT...For the first Freeze Warning, sub-freezing temperatures as low as 31. For the second Freeze Warning, sub-freezing temperatures as low as 28 expected. * WHERE...Portions of east Tennessee and southwest Virginia. * WHEN...For the first Freeze Warning, until 10 AM EDT this morning. For the second Freeze Warning, from midnight tonight to 10 AM EDT Friday. * 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. && $$ TNZ037-VAZ008-041800- /O.NEW.KMRX.FZ.W.0008.211105T0400Z-211105T1400Z/ /O.CON.KMRX.FR.Y.0008.000000T0000Z-211104T1400Z/ Union-Washington- Including the cities of Maynardville, Norris Lake, Paulette, Rose Hill, Sharps Chapel, Luttrell, Benhams, Bristol VA, and Abingdon 259 AM EDT Thu Nov 4 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM EDT FRIDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 28 expected. For the Frost Advisory, temperatures as low as 36 will result in frost formation. * WHERE...In Tennessee, Union County. In Virginia, Washington County. * WHEN...For the Freeze Warning, from midnight tonight to 10 AM EDT Friday. For the Frost Advisory, until 10 AM EDT this morning. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. Those that have in-ground sprinkler systems should drain them and cover above-ground pipes to protect them from freezing. && $$ TNZ016>018-038-039-041>047-072-074-081-082-087-041800- /O.NEW.KMRX.FZ.W.0008.211105T0400Z-211105T1400Z/ Hawkins-Sullivan-Johnson-Grainger-Hamblen-Cocke Smoky Mountains- Northwest Greene-Southeast Greene-Washington-Unicoi- Northwest Carter-Southeast Carter-Blount Smoky Mountains- Sevier Smoky Mountains-Sequatchie-Bledsoe-Southeast Monroe- Including the cities of Mooresburg, Kingsport, Bristol TN, South Holston Dam, Doeville, Mountain City, Neva, Shady Valley, Trade, Laurel Bloomery, Bean Station, Alpha, Morristown, Russellville, Hartford, Greeneville, Cedar Creek, Johnson City, Erwin, Unicoi, Limestone Cove, Elizabethton, Hampton, Cades Cove, Elkmont, Gatlinburg, Cagle, Dunlap, Cartwright, Lone Oak, Old Cumberland, Palio, Melvine, Mount Crest, Pikeville, Brayton, Citico, and Coker Creek 259 AM EDT Thu Nov 4 2021 /159 AM CDT Thu Nov 4 2021/ ...FREEZE WARNING IN EFFECT FROM MIDNIGHT EDT /11 PM CDT/ TONIGHT TO 10 AM EDT /9 AM CDT/ FRIDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Portions of east Tennessee. * WHEN...From midnight EDT /11 PM CDT/ tonight to 10 AM EDT /9 AM CDT/ Friday. * 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. && $$ TNZ036-041800- /O.NEW.KMRX.FR.Y.0009.211105T0600Z-211105T1400Z/ /O.CON.KMRX.FR.Y.0008.000000T0000Z-211104T1400Z/ Anderson- Including the cities of Oak Ridge and Clinton 259 AM EDT Thu Nov 4 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...FROST ADVISORY IN EFFECT FROM 2 AM TO 10 AM EDT FRIDAY... * WHAT...For the first Frost Advisory, temperatures as low as 36 will result in frost formation. For the second Frost Advisory, temperatures as low as 33 will result in frost formation. * WHERE...Anderson County. * WHEN...For the first Frost Advisory, until 10 AM EDT this morning. For the second Frost Advisory, from 2 AM to 10 AM EDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ TNZ040-067>071-073-083>086-041800- /O.NEW.KMRX.FR.Y.0009.211105T0600Z-211105T1400Z/ Northwest Cocke-Roane-Loudon-Knox-Jefferson-Northwest Blount- North Sevier-Rhea-Meigs-McMinn-Northwest Monroe- Including the cities of Bybee, Newport, Harriman, Eagle Furnace, Rockwood, Bradbury, Fairview, Kingston, Oliver Springs, Lenoir City, Loudon, Bearden, Knoxville, Lake Forest, Jefferson City, Strawberry Plains, Chestnut Hill, Dandridge, White Pine, Maryville, Alcoa, Harrisburg, Kodak, McMahan, Sevierville, Seymour, Pigeon Forge, Dayton, Evensville, Old Washington, Grandview, Spring City, Big Spring, Athens, Clear Water, Dentville, Etowah, Sweetwater, Madisonville, and Bullet Creek 259 AM EDT Thu Nov 4 2021 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 10 AM EDT FRIDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of east Tennessee. * WHEN...From 2 AM to 10 AM EDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NCZ060-061-TNZ098>102-041800- /O.NEW.KMRX.FR.Y.0009.211105T0800Z-211105T1400Z/ Cherokee-Clay-Marion-Hamilton-Bradley-West Polk-East Polk- Including the cities of Andrews, Marble, Topton, Hiawasse Dam, Murphy, Unaka, Violet, Shooting Creek, Brasstown, Hayesville, Tusquitee, South Pittsburg, Haletown (Guild), Jasper, Martin Springs, Whitwell, Powells Crossroads, Monteagle, Chattanooga, Cleveland, Tasso, Conasauga, Archville, Benton, Parksville, Reliance, Big Frog Mountain, Ducktown, and Turtletown 259 AM EDT Thu Nov 4 2021 /159 AM CDT Thu Nov 4 2021/ ...FROST ADVISORY IN EFFECT FROM 4 AM EDT /3 AM CDT/ TO 10 AM EDT /9 AM CDT/ FRIDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of east Tennessee and southwest North Carolina. * WHEN...From 4 AM EDT /3 AM CDT/ to 10 AM EDT /9 AM CDT/ Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 3, 4:02 AM EDT | Freeze Warning | MRX | Campbell, Claiborne, Hancock, Morgan, Scott | 30 hr |
Nearby
Frost Advisories in Tennessee, 2021Frost Advisories in Virginia, 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.