Alert archive / Texas / Wind Chill Advisories in 2021

Wind Chill Advisory 1, NWS Shreveport, LA

February 13, 20214 states

NWS Shreveport, LA issued this wind chill advisory at Feb 13, 2021, 2:57 PM CST for 4 states. It took effect at Feb 15, 2021, 12:00 AM CST. It was in force for 36 hr.

The area

The counties it named.

The facts

Issued
Feb 13, 2021, 2:57 PM CST (20:57 UTC)
In effect from
Feb 15, 2021, 12:00 AM CST
Expired
Feb 16, 2021, 11:55 AM CST
In force
36 hr
Issued by
NWS Shreveport, LA
All 48 counties

Columbia County, AR, Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Sevier County, AR, Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Sabine Parish, LA, Union Parish, LA, Webster Parish, LA, Winn Parish, LA, McCurtain County, OK, Angelina County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Red River County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 20 km from the middle of the area, began a volume at 20:56 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

Shreveport, LA (KSHV), launched 12:00Z, 9.0 hours before the alert went out and 20 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, Shreveport, LA at 12:00Z on 2021-02-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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, Shreveport, LA at 12:00Z on 2021-02-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -69 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
551 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-69 m²/s²
0-3 km storm-relative helicity
-10 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

718 
WWUS44 KSHV 132057
WSWSHV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Shreveport LA
257 PM CST Sat Feb 13 2021

...Winter Weather threat to ramp up late Saturday night...

.A significant winter storm is expected to impact the entire Four
State region with a mix of snow, sleet, and freezing rain Sunday
night into Monday. However, before the worst of the storm arrives
on Monday, there is good potential for a burst of mainly sleet
and freezing rain across the region early Sunday morning.

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-141400-
/O.NEW.KSHV.WC.Y.0001.210215T0600Z-210216T0000Z/
/O.CON.KSHV.WS.W.0002.210214T0600Z-210216T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, Shreveport, Bossier City, Minden, 
Springhill, Homer, Haynesville, Ruston, Farmerville, Bernice, 
Mansfield, Stonewall, Logansport, Coushatta, Martin, Arcadia, 
Ringgold, Gibsland, Jonesboro, Monroe, Many, Zwolle, 
Pleasant Hill, Natchitoches, Winnfield, Colfax, Montgomery, 
Dry Prong, Clarks, Grayson, Columbia, Jena, Midway, Olla, Idabel,
Broken Bow, Clarksville, Bogata, Mount Vernon, Mount Pleasant, 
Pittsburg, Daingerfield, Lone Star, Naples, Omaha, Atlanta, 
Linden, Hughes Springs, Queen City, Mineola, Winnsboro, Quitman, 
Hawkins, Gilmer, Big Sandy, Jefferson, Tyler, Longview, Marshall,
Jacksonville, Rusk, Henderson, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
257 PM CST Sat Feb 13 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 PM CST MONDAY...
...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT SUNDAY NIGHT TO
6 PM CST MONDAY...

* WHAT...For the Winter Storm Warning, heavy mixed precipitation 
  expected. Total snow accumulations of 3 to 5 inches, sleet 
  accumulations of around 1 inch and ice accumulations of around 
  one quarter of an inch. For the Wind Chill Advisory, very cold 
  wind chills expected. Wind chills as low as 10 below zero.

* WHERE...Portions of north central and northwest Louisiana, 
  southeast Oklahoma, south central and southwest Arkansas and 
  east and northeast Texas.

* WHEN...For the Winter Storm Warning, from midnight tonight to 
  6 PM CST Monday. For the Wind Chill Advisory, from midnight 
  Sunday night to 6 PM CST Monday.

* IMPACTS...Power outages and tree damage are likely due to the
  ice. Travel could be nearly impossible due to snow, sleet, and
  ice accumulations. The cold wind chills could result in 
  hypothermia if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

&&

$$

12
8 follow-up statements
426 
WWUS44 KSHV 140823
WSWSHV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Shreveport LA
223 AM CST Sun Feb 14 2021

...Winter Weather Threat Continues from Today through Monday...

.A significant winter storm is expected to impact the entire Four
State region with a mix of snow, sleet, and freezing rain from
today into Monday. Conditions are forecast to deteriorate today 
as a wintry mix of precipitation develops areawide. However,the 
heaviest precipitation, however, will be late tonight into Monday.

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-141630-
/O.CON.KSHV.WS.W.0002.000000T0000Z-210216T0000Z/
/O.CON.KSHV.WC.Y.0001.210215T0600Z-210216T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, Shreveport, Bossier City, Minden, 
Springhill, Homer, Haynesville, Ruston, Farmerville, Bernice, 
Mansfield, Stonewall, Logansport, Coushatta, Martin, Arcadia, 
Ringgold, Gibsland, Jonesboro, Monroe, Many, Zwolle, 
Pleasant Hill, Natchitoches, Winnfield, Colfax, Montgomery, 
Dry Prong, Clarks, Grayson, Columbia, Jena, Midway, Olla, Idabel,
Broken Bow, Clarksville, Bogata, Mount Vernon, Mount Pleasant, 
Pittsburg, Daingerfield, Lone Star, Naples, Omaha, Atlanta, 
Linden, Hughes Springs, Queen City, Mineola, Winnsboro, Quitman, 
Hawkins, Gilmer, Big Sandy, Jefferson, Tyler, Longview, Marshall,
Jacksonville, Rusk, Henderson, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
223 AM CST Sun Feb 14 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST MONDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM CST MONDAY...

* WHAT...For the Winter Storm Warning, heavy mixed precipitation
  expected. Total snow accumulations of 3 to 5 inches possible
  across deep east Texas into northwest Louisiana and south-
  central Arkansas with lesser amounts elsewhere. Sleet
  accumulations of around 1 inch and ice accumulations of around
  one quarter of an inch possible across north-central and
  northeast Louisiana. For the Wind Chill Advisory, very cold wind
  chills expected. Wind chills as low as 5 below zero across 
  southeast Oklahoma and in the single digits elsewhere.

* WHERE...Portions of north central and northwest Louisiana, 
  southeast Oklahoma, south central and southwest Arkansas and 
  east and northeast Texas.

* WHEN...For the Winter Storm Warning, through 6 PM CST Monday.
  For the Wind Chill Advisory, through 6 PM CST Monday.

* IMPACTS...Power outages and tree damage are likely due to the 
  ice. Travel could be nearly impossible due to snow, sleet, and 
  ice accumulations. The cold wind chills could result in 
  hypothermia if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

&&

$$
711 
WWUS44 KSHV 142137
WSWSHV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Shreveport LA
337 PM CST Sun Feb 14 2021

...Winter Weather Threat Will Continue Through Monday...

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-151200-
/O.CON.KSHV.WS.W.0002.000000T0000Z-210216T0000Z/
/O.CON.KSHV.WC.Y.0001.210215T0600Z-210216T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, Shreveport, Bossier City, Minden, 
Springhill, Homer, Haynesville, Ruston, Farmerville, Bernice, 
Mansfield, Stonewall, Logansport, Coushatta, Martin, Arcadia, 
Ringgold, Gibsland, Jonesboro, Monroe, Many, Zwolle, 
Pleasant Hill, Natchitoches, Winnfield, Colfax, Montgomery, 
Dry Prong, Clarks, Grayson, Columbia, Jena, Midway, Olla, Idabel,
Broken Bow, Clarksville, Bogata, Mount Vernon, Mount Pleasant, 
Pittsburg, Daingerfield, Lone Star, Naples, Omaha, Atlanta, 
Linden, Hughes Springs, Queen City, Mineola, Winnsboro, Quitman, 
Hawkins, Gilmer, Big Sandy, Jefferson, Tyler, Longview, Marshall,
Jacksonville, Rusk, Henderson, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
337 PM CST Sun Feb 14 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST MONDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM CST MONDAY...

* WHAT...For the Winter Storm Warning, heavy mixed precipitation
  expected. Total snow accumulations of 4 to 6 inches, with
  isolated higher amounts possible, across much of the region,
  with lesser amounts across north central Louisiana are forecast.
  Sleet accumulations of around 1 inch and ice accumulations of
  around one quarter of an inch are possible across Deep East
  Texas and north-central Louisiana. For the Wind Chill Advisory,
  very cold wind chills as low as 10 below zero are possible.

* WHERE...Portions of north central and northwest Louisiana, 
  southeast Oklahoma, south central and southwest Arkansas and 
  east and northeast Texas.

* WHEN...For the Winter Storm Warning, through 6 PM CST Monday. 
  For the Wind Chill Advisory, through 6 PM CST Monday.

* IMPACTS...Power outages and tree damage are likely due to the
  ice. Travel will be hazardous and nearly impossible due to snow,
  sleet, and ice accumulations. The cold wind chills could result
  in hypothermia if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

&&

$$

12
081 
WWUS44 KSHV 150814
WSWSHV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Shreveport LA
214 AM CST Mon Feb 15 2021

...Winter Weather Threat Continues Through This Afternoon...

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-151630-
/O.CON.KSHV.WS.W.0002.000000T0000Z-210216T0000Z/
/O.CON.KSHV.WC.Y.0001.000000T0000Z-210216T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, Shreveport, Bossier City, Minden, 
Springhill, Homer, Haynesville, Ruston, Farmerville, Bernice, 
Mansfield, Stonewall, Logansport, Coushatta, Martin, Arcadia, 
Ringgold, Gibsland, Jonesboro, Monroe, Many, Zwolle, 
Pleasant Hill, Natchitoches, Winnfield, Colfax, Montgomery, 
Dry Prong, Clarks, Grayson, Columbia, Jena, Midway, Olla, Idabel,
Broken Bow, Clarksville, Bogata, Mount Vernon, Mount Pleasant, 
Pittsburg, Daingerfield, Lone Star, Naples, Omaha, Atlanta, 
Linden, Hughes Springs, Queen City, Mineola, Winnsboro, Quitman, 
Hawkins, Gilmer, Big Sandy, Jefferson, Tyler, Longview, Marshall,
Jacksonville, Rusk, Henderson, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
214 AM CST Mon Feb 15 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...For the Winter Storm Warning, heavy mixed precipitation
  is expected to transition to snow late this morning. Total snow
  accumulations of 4 to 6 inches are expected across much of the
  region, with lesser amounts across north-central Louisiana. 
  Additional sleet accumulations of around 1 inch and ice 
  accumulations of around a tenth of an inch are possible across 
  mainly north-central Louisiana. For the Wind Chill Advisory, 
  very cold wind chills ranging from 10 below zero across 
  McCurtain county to around 15 degrees across north-central 
  Louisiana are possible later this afternoon.

* WHERE...Portions of north central and northwest Louisiana, 
  southeast Oklahoma, south central and southwest Arkansas and 
  east and northeast Texas.

* WHEN...For the Winter Storm Warning, through 6 PM CST Monday. 
  For the Wind Chill Advisory, through 6 PM CST Monday.

* IMPACTS...Power outages are likely due to the ice. Travel will 
  be hazardous and nearly impossible due to snow, sleet, and ice 
  accumulations. The cold wind chills could result in hypothermia 
  if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

&&

$$

05
930 
WWUS44 KSHV 151502
WSWSHV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Shreveport LA
902 AM CST Mon Feb 15 2021

...Winter Weather Threat Continues Through This Afternoon...

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-152200-
/O.CON.KSHV.WS.W.0002.000000T0000Z-210216T0000Z/
/O.CON.KSHV.WC.Y.0001.000000T0000Z-210216T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, Shreveport, Bossier City, Minden, 
Springhill, Homer, Haynesville, Ruston, Farmerville, Bernice, 
Mansfield, Stonewall, Logansport, Coushatta, Martin, Arcadia, 
Ringgold, Gibsland, Jonesboro, Monroe, Many, Zwolle, 
Pleasant Hill, Natchitoches, Winnfield, Colfax, Montgomery, 
Dry Prong, Clarks, Grayson, Columbia, Jena, Midway, Olla, Idabel,
Broken Bow, Clarksville, Bogata, Mount Vernon, Mount Pleasant, 
Pittsburg, Daingerfield, Lone Star, Naples, Omaha, Atlanta, 
Linden, Hughes Springs, Queen City, Mineola, Winnsboro, Quitman, 
Hawkins, Gilmer, Big Sandy, Jefferson, Tyler, Longview, Marshall,
Jacksonville, Rusk, Henderson, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
902 AM CST Mon Feb 15 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

* WHAT...For the Winter Storm Warning, snowfall will continue to
  decrease in intensity throughout the morning. However additional
  accumulations of an inch may be possible across northeast
  Louisiana and southern Arkansas. For the Wind Chill Advisory,
  very cold wind chills ranging from 10 below zero across
  McCurtain county to around 15 degrees across north-central 
  Louisiana are possible later this afternoon.

* WHERE...Portions of north central and northwest Louisiana, 
  southeast Oklahoma, south central and southwest Arkansas and 
  east and northeast Texas.

* WHEN...For the Winter Storm Warning, through 6 PM CST Monday. 
  For the Wind Chill Advisory, through 6 PM CST Monday.

* IMPACTS...Power outages are likely due to the ice. Travel will 
  be hazardous and nearly impossible due to snow, sleet, and ice 
  accumulations. The cold wind chills could result in 
  hypothermia if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

&&

$$
225 
WWUS44 KSHV 152027
WSWSHV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Shreveport LA
227 PM CST Mon Feb 15 2021

...Winter Weather Threat for this afternoon has diminished.
However, another system will move into the region into Wednesday.
As such, a NEW Winter Storm Warning will go into effect area wide
starting Tuesday at 6PM to account for this new storm system. This
system will be two fold, with a heavy snow threat to the north,
and a freezing rain/sleet threat in the south. Many of the
northern counties in the heaviest snow areas can see an additional
6-8 inches, on top of what has fallen with this first system. As
for the areas in the ice/sleet areas, accumulations of 0.3-0.5
inches of ice are possible. Additional snow will be possible area
wide as temperatures aloft cool, but these values will be one
inch or less...

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-160430-
/O.CAN.KSHV.WS.W.0002.000000T0000Z-210216T0000Z/
/O.NEW.KSHV.WS.W.0003.210217T0000Z-210218T1800Z/
/O.EXT.KSHV.WC.Y.0001.000000T0000Z-210216T1800Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, Shreveport, Bossier City, Minden, 
Springhill, Homer, Haynesville, Ruston, Farmerville, Bernice, 
Mansfield, Stonewall, Logansport, Coushatta, Martin, Arcadia, 
Ringgold, Gibsland, Jonesboro, Monroe, Many, Zwolle, 
Pleasant Hill, Natchitoches, Winnfield, Colfax, Montgomery, 
Dry Prong, Clarks, Grayson, Columbia, Jena, Midway, Olla, Idabel,
Broken Bow, Clarksville, Bogata, Mount Vernon, Mount Pleasant, 
Pittsburg, Daingerfield, Lone Star, Naples, Omaha, Atlanta, 
Linden, Hughes Springs, Queen City, Mineola, Winnsboro, Quitman, 
Hawkins, Gilmer, Big Sandy, Jefferson, Tyler, Longview, Marshall,
Jacksonville, Rusk, Henderson, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
227 PM CST Mon Feb 15 2021

...WIND CHILL ADVISORY NOW IN EFFECT UNTIL NOON CST TUESDAY...
...WINTER STORM WARNING IN EFFECT FROM 6 PM TUESDAY TO NOON CST
THURSDAY...
...WINTER STORM WARNING IS CANCELLED FOR THIS AFTERNOON...

* WHAT...For the Winter Storm Warning, heavy mixed precipitation
  expected. Total snow accumulations of up to 8 inches and ice
  accumulations of up to half an inch. For the Wind Chill 
  Advisory, very cold wind chills. Wind chills as low as 15 below 
  zero.

* WHERE...Area-wide

* WHEN...For the Winter Storm Warning, from 6 PM Tuesday to noon 
  CST Thursday. For the Wind Chill Advisory, until noon CST 
  Tuesday.

* IMPACTS...Power outages and tree damage are likely due to the
  ice. Travel could be nearly impossible. The hazardous conditions
  could impact the morning or evening commute. The cold wind
  chills could result in hypothermia if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

&&

$$

44
803 
WWUS44 KSHV 160434
WSWSHV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Shreveport LA
1034 PM CST Mon Feb 15 2021

...A new Winter Storm Warning will go into effect area wide 
starting Tuesday at 6pm and continuing through midweek until noon
on Thursday with our next approaching wintry system. This next 
winter storm will produce heavy snow of 6 to 10 inches along and 
north of I-30. Elsewhere, precipitation will start again with a 
freezing rain over to sleet mix. Expect a quarter inch to a half 
inch of ice accumulations before ending as snowfall of 3 to 5 
inches well north of I-20 and 1 to 2 inches across our south...


ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-161200-
/O.CON.KSHV.WS.W.0003.210217T0000Z-210218T1800Z/
/O.CON.KSHV.WC.Y.0001.000000T0000Z-210216T1800Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, Shreveport, Bossier City, Minden, 
Springhill, Homer, Haynesville, Ruston, Farmerville, Bernice, 
Mansfield, Stonewall, Logansport, Coushatta, Martin, Arcadia, 
Ringgold, Gibsland, Jonesboro, Monroe, Many, Zwolle, 
Pleasant Hill, Natchitoches, Winnfield, Colfax, Montgomery, 
Dry Prong, Clarks, Grayson, Columbia, Jena, Midway, Olla, Idabel,
Broken Bow, Clarksville, Bogata, Mount Vernon, Mount Pleasant, 
Pittsburg, Daingerfield, Lone Star, Naples, Omaha, Atlanta, 
Linden, Hughes Springs, Queen City, Mineola, Winnsboro, Quitman, 
Hawkins, Gilmer, Big Sandy, Jefferson, Tyler, Longview, Marshall,
Jacksonville, Rusk, Henderson, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
1034 PM CST Mon Feb 15 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON CST TUESDAY...
...WINTER STORM WARNING GOES INTO EFFECT FROM 6 PM TUESDAY TO 
  NOON CST THURSDAY...

* WHAT...A Wind Chill Advisory remains in effect overnight tonight
  with very cold Arctic wind chill values as low as 15 below zero.
  Our next Winter Storm Warning goes into effect Tuesday evening
  with a heavy wintry mix expected for our four state area. New 
  snow accumulations of 6 to 10 inches along and north of I-30 are
  possible. Everywhere else, freezing rain ice accumulations of 
  up to half an inch before ending as a lighter snowfall.

* WHERE...Four State Area wide.

* WHEN...The Wind Chill Advisory overnight continues until noon on
  Tuesday. The Winter Storm Warning goes into effect at 6 PM
  Tuesday and will continue until noon on Thursday. 

* IMPACTS...The below zero wind chills tonight could result in
  hypothermia without precautions taken to protect the body in
  this kind of cold air. Power outages and tree damage are again
  likely due to the midweek additional icing. The hazardous road 
  conditions will impact travel for days. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

&&

$$

24
427 
WWUS44 KSHV 160823
WSWSHV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Shreveport LA
223 AM CST Tue Feb 16 2021

...A Winter Storm Warning will go into effect today at 6pm and 
continuing through midday Thursday. This winter storm will 
produce heavy snow of 6 to 8 inches along and north of I-30. 
Elsewhere, expect a quarter inch of ice across deep east Texas 
with higher amounts up to a half inch across north Louisiana...

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-161800-
/O.CON.KSHV.WS.W.0003.210217T0000Z-210218T1800Z/
/O.CON.KSHV.WC.Y.0001.000000T0000Z-210216T1800Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, Shreveport, Bossier City, Minden, 
Springhill, Homer, Haynesville, Ruston, Farmerville, Bernice, 
Mansfield, Stonewall, Logansport, Coushatta, Martin, Arcadia, 
Ringgold, Gibsland, Jonesboro, Monroe, Many, Zwolle, 
Pleasant Hill, Natchitoches, Winnfield, Colfax, Montgomery, 
Dry Prong, Clarks, Grayson, Columbia, Jena, Midway, Olla, Idabel,
Broken Bow, Clarksville, Bogata, Mount Vernon, Mount Pleasant, 
Pittsburg, Daingerfield, Lone Star, Naples, Omaha, Atlanta, 
Linden, Hughes Springs, Queen City, Mineola, Winnsboro, Quitman, 
Hawkins, Gilmer, Big Sandy, Jefferson, Tyler, Longview, Marshall,
Jacksonville, Rusk, Henderson, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
223 AM CST Tue Feb 16 2021

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY...
...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON 
CST THURSDAY...

* WHAT...A Wind Chill Advisory remains in effect through noon as
  wind chill values fall as low as 15 below zero. A Winter Storm 
  Warning goes into effect this evening as a heavy wintry mix is 
  expected for our Four State Area. New snow accumulations of 6 to
  8 inches along and north of I-30 are possible. Everywhere, 
  freezing rain ice accumulations of up to a half an inch will be 
  possible.

* WHERE...Four State Area wide.

* WHEN...For the Winter Storm Warning, through noon CST Thursday.
  For the Wind Chill Advisory, until noon CST today.

* IMPACTS...The below zero wind chills tonight could result in 
  hypothermia without precautions taken to protect the body in 
  this kind of cold air. Power outages and tree damage are again 
  likely due to the midweek additional icing. The hazardous road 
  conditions will impact travel for days.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

&&

$$
196 
WWUS44 KSHV 161755
WSWSHV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Shreveport LA
1155 AM CST Tue Feb 16 2021

...Next winter storm will push into our area tonight and 
continue through Thursday morning...

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-170200-
/O.CAN.KSHV.WC.Y.0001.000000T0000Z-210216T1800Z/
/O.CON.KSHV.WS.W.0003.210217T0000Z-210218T1800Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, Shreveport, Bossier City, Minden, 
Springhill, Homer, Haynesville, Ruston, Farmerville, Bernice, 
Mansfield, Stonewall, Logansport, Coushatta, Martin, Arcadia, 
Ringgold, Gibsland, Jonesboro, Monroe, Many, Zwolle, 
Pleasant Hill, Natchitoches, Winnfield, Colfax, Montgomery, 
Dry Prong, Clarks, Grayson, Columbia, Jena, Midway, Olla, Idabel,
Broken Bow, Clarksville, Bogata, Mount Vernon, Mount Pleasant, 
Pittsburg, Daingerfield, Lone Star, Naples, Omaha, Atlanta, 
Linden, Hughes Springs, Queen City, Mineola, Winnsboro, Quitman, 
Hawkins, Gilmer, Big Sandy, Jefferson, Tyler, Longview, Marshall,
Jacksonville, Rusk, Henderson, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
1155 AM CST Tue Feb 16 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO NOON CST THURSDAY...
...WIND CHILL ADVISORY IS CANCELLED...

* WHAT...A wintry mix of snow, sleet, and freezing rain. Snow and
  sleet accumulations will range from less than 2 inches south of
  the I-20 corridor to 5 to 8 inches north of the I-30 corridor.
  Ice accumulations of a quarter of an inch to a half of an inch
  with localized higher amounts will be possible from Deep East
  Texas across northwestern Louisiana, central Louisiana, and into
  south- central Arkansas.

* WHERE...Portions of north central and northwest Louisiana, 
  southeast Oklahoma, south central and southwest Arkansas and 
  east and northeast Texas.

* WHEN...From 6 PM this evening to noon CST Thursday.

* IMPACTS...Treacherous road conditions will continue across the
  region. Locations with over a quarter inch of ice will see
  downed limbs and powerlines which will lead to the possibility
  of widespread power outages. Cold temperatures will continue to
  make extended time outdoors dangerous with the risk of
  hypothermia.  

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.

&&

$$

04

What forecasters said that day

The local office's own words before this wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Shreveport, LA wrote its last area forecast discussion before this wind chill advisory went out at Feb 13, 11:32 AM CST, 3 hours 25 minutes earlier.

Area forecast discussion, Feb 13, 11:32 AM CST, 3 hours 25 minutes before
Area Forecast Discussion
National Weather Service Shreveport LA
1132 AM CST Sat Feb 13 2021

.AVIATION...

For the 13/18Z TAF update, low stratus clouds continue to keep
MVFR cigs in place across most of our terminals with marginal VFR
cigs improvement possible by 14/00Z. By 14/10Z, most terminals
begin returning back to MVFR and potentially IFR for KLFK as our
winter storm impacts begin with -FZRA quickly entering our entire
airspace. Toward the end of the period, -PL is possible at KTXK,
however, -FZRA could arrive there first. Low level northerly flow
and mid-level southwesterly flow could present marginal LLWS
hazards, especially during the daytime hours. /16/

&&

.PREV DISCUSSION... /issued 1001 AM CST Sat Feb 13 2021/

UPDATE...

Low stratus continues to blanket all of the Ark-La-Tex this
morning, and surface temperatures remain below freezing almost
everywhere except for our southern zones. Cold air advection,
also ongoing, is evident in this morning's KSHV sounding, with a
cold nose approaching -8 degrees Celsius, down about two degrees
in 24 hours or almost seven degrees in 48 hours.

Therefore, afternoon high temperatures and sky grids were
adjusted accordingly. Otherwise, no additional forecast
adjustments were necessary at this time. /16/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  33  25  29  20 /   0  30  50  80
MLU  34  25  28  20 /   0  20  40  50
DEQ  33  22  27  13 /   0  10  60  80
TXK  33  24  27  17 /   0  20  60  80
ELD  32  19  24  16 /   0  20  60  70
TYR  31  27  28  13 /   0  30  40  90
GGG  33  26  28  16 /   0  30  40  80
LFK  36  28  35  19 /   0  30  20  80

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...Winter Storm Warning from midnight tonight to 6 PM CST Monday
     for ARZ050-051-059>061-070>073.

LA...Winter Storm Warning from midnight tonight to 6 PM CST Monday
     for LAZ001>006-010>014-017>022.

OK...Winter Storm Warning from midnight tonight to 6 PM CST Monday
     for OKZ077.

TX...Winter Storm Warning from midnight tonight to 6 PM CST Monday
     for TXZ096-097-108>112-124>126-136>138-149>153-165>167.

&&

16/16
Hazardous weather outlook, Feb 13, 5:31 AM CST, 9 hours 26 minutes before
Hazardous Weather Outlook
National Weather Service Shreveport LA
531 AM CST Sat Feb 13 2021

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-141145-
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
531 AM CST Sat Feb 13 2021

This Hazardous Weather Outlook is for portions of south central
Arkansas, southwest Arkansas, north central Louisiana, northwest
Louisiana, southeast Oklahoma, east Texas and northeast Texas.

.DAY ONE...Today and Tonight...

Some locations across southeast Oklahoma and adjacent counties in
Arkansas and Texas to remain below freezing today and tonight.
Elsewhere, high temperatures forecast to climb above freezing for
only a few hours. Precautions should be taken to protect pipes,
pets, and sensitive vegetation from cold related issues.

A mix of wintry precipitation will move into the region tonight.
Some accumulation of snow, sleet, and ice will be possible, mainly
on elevated surfaces such as bridges and overpasses.

.DAYS TWO THROUGH SEVEN...Sunday through Friday...

A significant winter storm is expected Sunday into Monday with the
heaviest precipitation falling on Monday. Initially, a mix of
snow, sleet, and freezing rain is expected, transitioning to all
snow as colder air arrives on Monday. Event total snowfall
accumulations of 3 to 6 inches along with the possibility of ice
accumulations of around a tenth to a quarter of an inch can be
expected. The higher snow totals will likely occur across the I-30
corridor with the higher ice totals along and south of Interstate
20.

Yet another round of a potentially significant wintry mix of
rain, freezing rain, sleet, and snow is expected Tuesday night
through Wednesday night.

In addition, extremely cold weather is expected Sunday through
Wednesday. The coldest temperatures are expected Monday night and
Tuesday morning as overnight lows fall into the single digits for
most locations. Road conditions will be very slow to improve, and
likely won't begin until late in the week.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel...amateur radio
operators...and storm spotters is not expected through tomorrow.
Please relay any information about observed severe weather to the
NWS while following all local, state, and CDC guidelines.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 13, 2:25 AM CSTWinter Storm WarningSHVBienville, Bossier, Caddo, Caldwell, Claiborne, De Soto and 11 more60 hr

Nearby

Wind Chill Advisories in Texas, 2021Wind Chill Advisories in Louisiana, 2021Wind Chill Advisories in Arkansas, 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.