Alert archive / Tennessee / Wind Advisories in 2021

Wind Advisory 14, NWS Morristown, TN

May 9, 202133 counties in Tennessee; 7 counties in Virginia

NWS Morristown, TN issued this wind advisory at May 9, 2021, 3:36 AM EDT for 33 counties in Tennessee; 7 counties in Virginia. It took effect at May 9, 2021, 11:00 AM EDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
May 9, 2021, 3:36 AM EDT (07:36 UTC)
In effect from
May 9, 2021, 11:00 AM EDT
Expired
May 9, 2021, 8:00 PM EDT
In force
9 hr
Issued by
NWS Morristown, TN
All 40 counties

Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Carter County, TN, Claiborne County, TN, Cocke County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hamilton County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Polk County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Sevier County, TN, Sullivan County, TN, Unicoi County, TN, Union County, TN, Washington County, TN, City of Bristol, VA, City of Norton, VA, Lee County, VA, Russell County, VA, Scott County, VA, Washington County, VA, Wise County, VA

The radar

The Knoxville radar (KMRX), 23 km from the middle of the area, began a volume at 07:36 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, 7.6 hours before the alert went out and 266 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 2021-05-09Temperature 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 2021-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 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
1439 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
312 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

927 
WWUS74 KMRX 090736
NPWMRX

URGENT - WEATHER MESSAGE
National Weather Service Morristown TN
336 AM EDT Sun May 9 2021

TNZ012>018-035>047-067>074-081>087-098>101-VAZ001-002-005-006-008-
091545-
/O.NEW.KMRX.WI.Y.0014.210509T1500Z-210510T0000Z/
Scott-Campbell-Claiborne-Hancock-Hawkins-Sullivan-Johnson-Morgan-
Anderson-Union-Grainger-Hamblen-Northwest Cocke-
Cocke Smoky Mountains-Northwest Greene-Southeast Greene-
Washington-Unicoi-Northwest Carter-Southeast Carter-Roane-Loudon-
Knox-Jefferson-Northwest Blount-Blount Smoky Mountains-
North Sevier-Sevier Smoky Mountains-Sequatchie-Bledsoe-Rhea-Meigs-
McMinn-Northwest Monroe-Southeast Monroe-Marion-Hamilton-Bradley-
West Polk-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, Mooresburg, Kingsport, 
Bristol TN, South Holston Dam, Doeville, Mountain City, Neva, 
Shady Valley, Trade, Laurel Bloomery, Pine Orchard, High Point, 
Petros, Oak Ridge, Clinton, Maynardville, Norris Lake, Paulette, 
Rose Hill, Sharps Chapel, Luttrell, Bean Station, Alpha, 
Morristown, Russellville, Bybee, Newport, Hartford, Greeneville, 
Cedar Creek, Johnson City, Erwin, Unicoi, Limestone Cove, 
Elizabethton, Hampton, 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, 
Happy Valley, Maryville, Alcoa, Cades Cove, Harrisburg, Kodak, 
McMahan, Sevierville, Seymour, Pigeon Forge, Elkmont, Gatlinburg,
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, Citico, Coker Creek, South Pittsburg, 
Haletown (Guild), Jasper, Martin Springs, Whitwell, 
Powells Crossroads, Monteagle, Chattanooga, Cleveland, Tasso, 
Conasauga, Archville, Benton, Parksville, Reliance, 
Big Stone Gap, Norton, Wise, Coeburn, Appalachia, Pardee, 
Hiltons, Hansonville, Lebanon, Dye, Castlewood, Honaker, 
Rosedale, Benhams, Bristol VA, and Abingdon
336 AM EDT Sun May 9 2021 /236 AM CDT Sun May 9 2021/

...WIND ADVISORY IN EFFECT FROM 11 AM EDT /10 AM CDT/ THIS
MORNING TO 8 PM EDT /7 PM CDT/ THIS EVENING...

* WHAT...Southwest winds 15 to 25 mph with gusts up to 40 mph 
  expected.

* WHERE...Portions of east Tennessee and southwest Virginia.

* WHEN...From 11 AM EDT /10 AM CDT/ this morning to 8 PM EDT /7 
  PM CDT/ this evening.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$
1 follow-up statement
137 
WWUS74 KMRX 091437
NPWMRX

URGENT - WEATHER MESSAGE
National Weather Service Morristown TN
1037 AM EDT Sun May 9 2021

TNZ012>018-035>047-067>074-081>087-098>101-VAZ001-002-005-006-008-
100000-
/O.CON.KMRX.WI.Y.0014.210509T1500Z-210510T0000Z/
Scott-Campbell-Claiborne-Hancock-Hawkins-Sullivan-Johnson-Morgan-
Anderson-Union-Grainger-Hamblen-Northwest Cocke-
Cocke Smoky Mountains-Northwest Greene-Southeast Greene-
Washington-Unicoi-Northwest Carter-Southeast Carter-Roane-Loudon-
Knox-Jefferson-Northwest Blount-Blount Smoky Mountains-
North Sevier-Sevier Smoky Mountains-Sequatchie-Bledsoe-Rhea-Meigs-
McMinn-Northwest Monroe-Southeast Monroe-Marion-Hamilton-Bradley-
West Polk-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, Mooresburg, Kingsport, 
Bristol TN, South Holston Dam, Doeville, Mountain City, Neva, 
Shady Valley, Trade, Laurel Bloomery, Pine Orchard, High Point, 
Petros, Oak Ridge, Clinton, Maynardville, Norris Lake, Paulette, 
Rose Hill, Sharps Chapel, Luttrell, Bean Station, Alpha, 
Morristown, Russellville, Bybee, Newport, Hartford, Greeneville, 
Cedar Creek, Johnson City, Erwin, Unicoi, Limestone Cove, 
Elizabethton, Hampton, 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, 
Happy Valley, Maryville, Alcoa, Cades Cove, Harrisburg, Kodak, 
McMahan, Sevierville, Seymour, Pigeon Forge, Elkmont, Gatlinburg,
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, Citico, Coker Creek, South Pittsburg, 
Haletown (Guild), Jasper, Martin Springs, Whitwell, 
Powells Crossroads, Monteagle, Chattanooga, Cleveland, Tasso, 
Conasauga, Archville, Benton, Parksville, Reliance, 
Big Stone Gap, Norton, Wise, Coeburn, Appalachia, Pardee, 
Hiltons, Hansonville, Lebanon, Dye, Castlewood, Honaker, 
Rosedale, Benhams, Bristol VA, and Abingdon
1037 AM EDT Sun May 9 2021 /937 AM CDT Sun May 9 2021/

...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT /7 PM CDT/ THIS
EVENING...

* WHAT...Southwest winds 15 to 25 mph with gusts up to 40 mph 
  expected.

* WHERE...Portions of east Tennessee and southwest Virginia.

* WHEN...From 11 AM EDT /10 AM CDT/ this morning to 8 PM EDT /7 
  PM CDT/ this evening.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 9, 6:00 PM EDTSpecial Weather StatementMRXAnderson, Grainger, Hamblen, Knox, Union45 min
May 9, 6:05 PM EDTSevere Thunderstorm WarningMRXClaiborne, Grainger, Hamblen, Jefferson, Union40 min
May 9, 6:40 PM EDTSpecial Weather StatementMRXCocke, Hamblen50 min

Nearby

Wind Advisories in Tennessee, 2021Wind Advisories in Virginia, 2021Every wind 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.