Alert archive / Tennessee / Wind Chill Advisories in 2021

Wind Chill Advisory 1, NWS Nashville, TN

February 15, 202112 counties in Tennessee

NWS Nashville, TN issued this wind chill advisory at Feb 15, 2021, 8:15 PM CST for 12 counties in Tennessee. It took effect at Feb 16, 2021, 12:00 AM CST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Feb 15, 2021, 8:15 PM CST (02:15 UTC)
In effect from
Feb 16, 2021, 12:00 AM CST
Expired
Feb 16, 2021, 9:00 AM CST
In force
9 hr
Issued by
NWS Nashville, TN

Counties Dickson County, TN, Giles County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lawrence County, TN, Lewis County, TN, Maury County, TN, Montgomery County, TN, Perry County, TN, Stewart County, TN, Wayne County, TN

The radar

The Nashville radar (KOHX), 99 km from the middle of the area, began a volume at 02:16 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, 2.3 hours before the alert went out and 90 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 2021-02-16Temperature 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 2021-02-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 142 square meters per square second.1939587897117136156Sfc1 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
480 m above ground
0-6 km bulk shear
107 kt
0-1 km storm-relative helicity
142 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

210 
WWUS44 KOHX 160215
WSWOHX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Nashville TN
815 PM CST Mon Feb 15 2021

TNZ005-006-023>025-056>058-060-093>095-161200-
/O.CAN.KOHX.WS.W.0001.000000T0000Z-210216T1200Z/
/O.NEW.KOHX.WC.Y.0001.210216T0600Z-210216T1500Z/
Stewart-Montgomery-Houston-Humphreys-Dickson-Perry-Hickman-Lewis-
Maury-Wayne-Lawrence-Giles-
Including the cities of Dover, Clarksville, Erin, 
Tennessee Ridge, Waverly, New Johnsonville, McEwen, Dickson, 
Linden, Lobelville, Centerville, Hohenwald, Columbia, Clifton, 
Waynesboro, Lawrenceburg, and Pulaski
815 PM CST Mon Feb 15 2021

...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
CST TUESDAY...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  10 below zero.

* WHERE...Western Middle Tennessee.

* WHEN...From midnight tonight to 9 AM CST Tuesday.

* IMPACTS...The cold wind chills could result in hypothermia if
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$

TNZ007-008-026-027-059-061-160315-
/O.CAN.KOHX.WS.W.0001.000000T0000Z-210216T1200Z/
Robertson-Sumner-Cheatham-Davidson-Williamson-Marshall-
Including the cities of Springfield, Hendersonville, Gallatin, 
Goodlettsville, Ashland City, Kingston Springs, Nashville, 
Franklin, Brentwood, and Lewisburg
815 PM CST Mon Feb 15 2021

...WINTER STORM WARNING IS CANCELLED...

Heavy snow and mixed precipitation has moved out of the area, so
the warning has been cancelled. However, travel is still very
dangerous across the area and will remain into the day Tuesday as
temperatures stay below freezing.

$$

TNZ009-028>030-062-075-161200-
/O.CON.KOHX.WS.W.0001.000000T0000Z-210216T1200Z/
Macon-Wilson-Trousdale-Smith-Rutherford-Bedford-
Including the cities of Lafayette, Lebanon, Mount Juliet, 
Hartsville, Carthage, South Carthage, Gordonsville, Murfreesboro,
Smyrna, La Vergne, and Shelbyville
815 PM CST Mon Feb 15 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM CST
TUESDAY...

* WHAT...Snow. Additional snow accumulations of up to one inch, 
  with additional ice accumulations up to a tenth of an inch.

* WHERE...Central areas of Middle Tennessee.

* WHEN...Until 6 AM CST Tuesday.

* IMPACTS...Power outages and tree damage are possible due to 
  the ice. Travel could be nearly impossible.

* ADDITIONAL DETAILS...Light snow and freezing rain will be
  possible during the evening. Very cold air following the storm 
  will make travel conditions slow to improve through Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

TNZ010-011-031>034-063>066-077>080-161200-
/O.CON.KOHX.WS.W.0001.000000T0000Z-210216T1200Z/
Clay-Pickett-Jackson-Putnam-Overton-Fentress-Cannon-De Kalb-White-
Cumberland-Coffee-Warren-Grundy-Van Buren-
Including the cities of Celina, Byrdstown, Gainesboro, 
Cookeville, Livingston, Jamestown, Allardt, Woodbury, Smithville,
Sparta, Crossville, Tullahoma, Manchester, McMinnville, Altamont,
Coalmont, and Spencer
815 PM CST Mon Feb 15 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM CST
TUESDAY...

* WHAT...Heavy mixed precipitation. Additional snow accumulations
  of up to one inch and additional ice accumulations of up to a 
  tenth of an inch possible.

* WHERE...Eastern Middle Tennessee.

* WHEN...Until 6 AM CST Tuesday.

* IMPACTS...Power outages and tree damage are likely due to the 
  ice, especially just to the west of the Cumberland Plateau. 
  Travel could be nearly impossible.

* ADDITIONAL DETAILS...Light freezing rain will continue, with a 
  mix of sleet and snow possible through the evening. Temperatures
  will remain below freezing during the day Tuesday which will 
  continue hazardous travel conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$
1 follow-up statement
199 
WWUS44 KOHX 160332
WSWOHX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Nashville TN
932 PM CST Mon Feb 15 2021

TNZ009>011-028>034-062>066-075-077>080-160445-
/O.CAN.KOHX.WS.W.0001.000000T0000Z-210216T1200Z/
Macon-Clay-Pickett-Wilson-Trousdale-Smith-Jackson-Putnam-Overton-
Fentress-Rutherford-Cannon-De Kalb-White-Cumberland-Bedford-
Coffee-Warren-Grundy-Van Buren-
Including the cities of Lafayette, Celina, Byrdstown, Lebanon, 
Mount Juliet, Hartsville, Carthage, South Carthage, Gordonsville,
Gainesboro, Cookeville, Livingston, Jamestown, Allardt, 
Murfreesboro, Smyrna, La Vergne, Woodbury, Smithville, Sparta, 
Crossville, Shelbyville, Tullahoma, Manchester, McMinnville, 
Altamont, Coalmont, and Spencer
932 PM CST Mon Feb 15 2021

...WINTER STORM WARNING IS CANCELLED...

Heavy snow and mixed precipitation has moved out of the area, so
the warning has been cancelled. However, travel is still very
dangerous across the area and will remain into the day Tuesday as
temperatures stay below freezing.

$$

TNZ005-006-023>025-056>058-060-093>095-161500-
/O.CON.KOHX.WC.Y.0001.210216T0600Z-210216T1500Z/
Stewart-Montgomery-Houston-Humphreys-Dickson-Perry-Hickman-Lewis-
Maury-Wayne-Lawrence-Giles-
Including the cities of Dover, Clarksville, Erin, 
Tennessee Ridge, Waverly, New Johnsonville, McEwen, Dickson, 
Linden, Lobelville, Centerville, Hohenwald, Columbia, Clifton, 
Waynesboro, Lawrenceburg, and Pulaski
932 PM CST Mon Feb 15 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST TUESDAY...

* WHAT...Very cold wind chills expected. Wind chills as low as 
  10 below zero.

* WHERE...Western Middle Tennessee.

* WHEN...From midnight tonight to 9 AM CST Tuesday.

* IMPACTS...The cold wind chills could result in hypothermia if
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves. 

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 16, 2:53 PM CSTWinter Storm WatchOHXBedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 32 more13 hr

Nearby

Wind Chill Advisories in Tennessee, 2021Every wind chill 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.