Alert archive / Tennessee / Frost Advisories in 2021

Frost Advisory 7, NWS Morristown, TN

November 2, 202112 counties in Tennessee

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.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2021-11-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2021-11-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

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.

IssuedProductOfficeCountiesLasted
Nov 2, 2:55 AM CDTFreeze WarningMRXBlount, Carter, Cocke, Greene, Hancock, Hawkins and 5 more30 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.