Alert archive / North Carolina / Freeze Warnings in 2021
Freeze Warning 9, NWS Morristown, TN
NWS Morristown, TN issued this freeze warning at Nov 6, 2021, 4:43 PM EDT for Polk County, Tennessee; Cherokee County, Clay County, North Carolina. It took effect at Nov 7, 2021, 3:00 AM EST. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Nov 6, 2021, 4:43 PM EDT (20:43 UTC)
- In effect from
- Nov 7, 2021, 3:00 AM EST
- Expired
- Nov 7, 2021, 9:00 AM EST
- In force
- 6 hr
- Issued by
- NWS Morristown, TN
Counties Cherokee County, NC, Clay County, NC, Polk County, TN
The radar
The Knoxville radar (KMRX), 135 km from the middle of the area, began a volume at 20:47 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.7 hours before the alert went out and 196 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
- 1459 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
168 WWUS74 KMRX 062043 AAA NPWMRX URGENT - WEATHER MESSAGE...UPDATED National Weather Service Morristown TN 443 PM EDT Sat Nov 6 2021 NCZ060-061-TNZ102-070445- /O.UPG.KMRX.FR.Y.0011.211107T0800Z-211107T1400Z/ /O.NEW.KMRX.FZ.W.0009.211107T0800Z-211107T1400Z/ Cherokee-Clay-East Polk- Including the cities of Andrews, Marble, Topton, Hiawasse Dam, Murphy, Unaka, Violet, Shooting Creek, Brasstown, Hayesville, Tusquitee, Big Frog Mountain, Ducktown, and Turtletown 443 PM EDT Sat Nov 6 2021 ...FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM EST SUNDAY... * WHAT...Sub-freezing temperatures as low as 29 degrees expected. * WHERE...In Tennessee, East Polk County. In North Carolina, Cherokee and Clay Counties. * WHEN...From 3 AM to 9 AM EST Sunday. * IMPACTS...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. && $$ TNZ036>040-067>071-073-081>086-098>101-070445- /O.CON.KMRX.FR.Y.0011.211107T0800Z-211107T1400Z/ Anderson-Union-Grainger-Hamblen-Northwest Cocke-Roane-Loudon-Knox- Jefferson-Northwest Blount-North Sevier-Sequatchie-Bledsoe-Rhea- Meigs-McMinn-Northwest Monroe-Marion-Hamilton-Bradley-West Polk- Including the cities of Oak Ridge, Clinton, Maynardville, Norris Lake, Paulette, Rose Hill, Sharps Chapel, Luttrell, Bean Station, Alpha, Morristown, Russellville, Bybee, Newport, Harriman, Eagle Furnace, Rockwood, Bradbury, Fairview, Kingston, Oliver Springs, Lenoir City, Loudon, Bearden, Knoxville, Lake Forest, Jefferson City, Strawberry Plains, Chestnut Hill, Dandridge, White Pine, Maryville, Alcoa, Harrisburg, Kodak, McMahan, Sevierville, Seymour, Pigeon Forge, Cagle, Dunlap, Cartwright, Lone Oak, Old Cumberland, Palio, Melvine, Mount Crest, Pikeville, Brayton, Dayton, Evensville, Old Washington, Grandview, Spring City, Big Spring, Athens, Clear Water, Dentville, Etowah, Sweetwater, Madisonville, Bullet Creek, South Pittsburg, Haletown (Guild), Jasper, Martin Springs, Whitwell, Powells Crossroads, Monteagle, Chattanooga, Cleveland, Tasso, Conasauga, Archville, Benton, Parksville, and Reliance 443 PM EDT Sat Nov 6 2021 /343 PM CDT Sat Nov 6 2021/ ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM EST /2 AM CST/ TO 9 AM EST /8 AM CST/ SUNDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Much of central and southern sections of east Tennessee of east Tennessee. * WHEN...From 3 AM EST /2 AM CST/ to 9 AM EST /8 AM CST/ Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
2 follow-up statements
022 WWUS74 KMRX 070124 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 924 PM EDT Sat Nov 6 2021 NCZ060-061-TNZ102-071000- /O.CON.KMRX.FZ.W.0009.211107T0800Z-211107T1400Z/ Cherokee-Clay-East Polk- Including the cities of Andrews, Marble, Topton, Hiawasse Dam, Murphy, Unaka, Violet, Shooting Creek, Brasstown, Hayesville, Tusquitee, Big Frog Mountain, Ducktown, and Turtletown 924 PM EDT Sat Nov 6 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM EST SUNDAY... * WHAT...Sub-freezing temperatures as low as 29 degrees expected. * WHERE...In Tennessee, East Polk County. In North Carolina, Cherokee and Clay Counties. * WHEN...From 3 AM to 9 AM EST Sunday. * IMPACTS...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. && $$ TNZ036>040-067>071-073-081>086-098>101-071000- /O.CON.KMRX.FR.Y.0011.211107T0800Z-211107T1400Z/ Anderson-Union-Grainger-Hamblen-Northwest Cocke-Roane-Loudon-Knox- Jefferson-Northwest Blount-North Sevier-Sequatchie-Bledsoe-Rhea- Meigs-McMinn-Northwest Monroe-Marion-Hamilton-Bradley-West Polk- Including the cities of Oak Ridge, Clinton, Maynardville, Norris Lake, Paulette, Rose Hill, Sharps Chapel, Luttrell, Bean Station, Alpha, Morristown, Russellville, Bybee, Newport, Harriman, Eagle Furnace, Rockwood, Bradbury, Fairview, Kingston, Oliver Springs, Lenoir City, Loudon, Bearden, Knoxville, Lake Forest, Jefferson City, Strawberry Plains, Chestnut Hill, Dandridge, White Pine, Maryville, Alcoa, Harrisburg, Kodak, McMahan, Sevierville, Seymour, Pigeon Forge, Cagle, Dunlap, Cartwright, Lone Oak, Old Cumberland, Palio, Melvine, Mount Crest, Pikeville, Brayton, Dayton, Evensville, Old Washington, Grandview, Spring City, Big Spring, Athens, Clear Water, Dentville, Etowah, Sweetwater, Madisonville, Bullet Creek, South Pittsburg, Haletown (Guild), Jasper, Martin Springs, Whitwell, Powells Crossroads, Monteagle, Chattanooga, Cleveland, Tasso, Conasauga, Archville, Benton, Parksville, and Reliance 924 PM EDT Sat Nov 6 2021 /824 PM CDT Sat Nov 6 2021/ ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM EST /2 AM CST/ TO 9 AM EST /8 AM CST/ SUNDAY... * WHAT...Temperatures as low as 33 will result in frost formation. Isolated locations could drop at or below freezing. * WHERE...Much of central and southern sections of east Tennessee. * WHEN...From 3 AM EST /2 AM CST/ to 9 AM EST /8 AM CST/ Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
103 WWUS74 KMRX 070803 NPWMRX URGENT - WEATHER MESSAGE National Weather Service Morristown TN 303 AM EST Sun Nov 7 2021 NCZ060-061-TNZ102-071400- /O.CON.KMRX.FZ.W.0009.000000T0000Z-211107T1400Z/ Cherokee-Clay-East Polk- Including the cities of Andrews, Marble, Topton, Hiawasse Dam, Murphy, Unaka, Violet, Shooting Creek, Brasstown, Hayesville, Tusquitee, Big Frog Mountain, Ducktown, and Turtletown 303 AM EST Sun Nov 7 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING... * WHAT...Sub-freezing temperatures as low as 29 degrees expected. * WHERE...In Tennessee, East Polk County. In North Carolina, Cherokee and Clay Counties. * WHEN...Until 9 AM EST this morning. * IMPACTS...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. && $$ TNZ036>040-067>071-073-081>086-098>101-071400- /O.CON.KMRX.FR.Y.0011.000000T0000Z-211107T1400Z/ Anderson-Union-Grainger-Hamblen-Northwest Cocke-Roane-Loudon-Knox- Jefferson-Northwest Blount-North Sevier-Sequatchie-Bledsoe-Rhea- Meigs-McMinn-Northwest Monroe-Marion-Hamilton-Bradley-West Polk- Including the cities of Oak Ridge, Clinton, Maynardville, Norris Lake, Paulette, Rose Hill, Sharps Chapel, Luttrell, Bean Station, Alpha, Morristown, Russellville, Bybee, Newport, Harriman, Eagle Furnace, Rockwood, Bradbury, Fairview, Kingston, Oliver Springs, Lenoir City, Loudon, Bearden, Knoxville, Lake Forest, Jefferson City, Strawberry Plains, Chestnut Hill, Dandridge, White Pine, Maryville, Alcoa, Harrisburg, Kodak, McMahan, Sevierville, Seymour, Pigeon Forge, Cagle, Dunlap, Cartwright, Lone Oak, Old Cumberland, Palio, Melvine, Mount Crest, Pikeville, Brayton, Dayton, Evensville, Old Washington, Grandview, Spring City, Big Spring, Athens, Clear Water, Dentville, Etowah, Sweetwater, Madisonville, Bullet Creek, South Pittsburg, Haletown (Guild), Jasper, Martin Springs, Whitwell, Powells Crossroads, Monteagle, Chattanooga, Cleveland, Tasso, Conasauga, Archville, Benton, Parksville, and Reliance 303 AM EST Sun Nov 7 2021 /203 AM CST Sun Nov 7 2021/ ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST /8 AM CST/ THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. Isolated locations could drop at or below freezing. * WHERE...Much of central and southern sections of east Tennessee. * WHEN...Until 9 AM EST /8 AM CST/ this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 6, 2:59 PM EDT | Frost Advisory | MRX | Anderson, Bledsoe, Blount, Bradley, Cocke, Grainger and 15 more | 19 hr |
Nearby
Freeze Warnings in North Carolina, 2021Freeze Warnings in Tennessee, 2021Every freeze 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.