Alert archive / Texas / Heat Advisories in 2021

Heat Advisory 9, NWS Shreveport, LA

July 29, 20214 states

NWS Shreveport, LA issued this heat advisory at Jul 29, 2021, 1:58 PM CDT for 4 states. It took effect at Jul 30, 2021, 12:00 PM CDT. It was in force for 55 hr.

The area

The counties it named.

The facts

Issued
Jul 29, 2021, 1:58 PM CDT (18:58 UTC)
In effect from
Jul 30, 2021, 12:00 PM CDT
Expired
Aug 1, 2021, 7:00 PM CDT
In force
55 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 19:00 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, 7.0 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 2021-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2034 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 2021-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 square meters per square second.1939Sfc1 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
2034 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
917 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
6 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

As transmitted.

492 
WWUS74 KSHV 291858
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
158 PM CDT Thu Jul 29 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>167-301200-
/O.NEW.KSHV.HT.Y.0009.210730T1700Z-210731T0000Z/
/O.CON.KSHV.HT.Y.0008.000000T0000Z-210730T0000Z/
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
158 PM CDT Thu Jul 29 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...HEAT ADVISORY IN EFFECT FROM NOON TO 7 PM CDT FRIDAY...

* WHAT...For both Heat Advisories, heat index values up to 110 
  are expected.

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

* WHEN...For the first Heat Advisory, until 7 PM CDT this 
  evening. For the second Heat Advisory, from noon to 7 PM CDT 
  Friday.

* IMPACTS...Hot temperatures and high humidity may cause heat
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

16
8 follow-up statements
335 
WWUS74 KSHV 300807
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
307 AM CDT Fri Jul 30 2021

LAZ005-006-013-014-019>022-301615-
/O.UPG.KSHV.HT.Y.0009.210730T1700Z-210731T0000Z/
/O.NEW.KSHV.EH.W.0001.210730T1700Z-210801T0000Z/
Lincoln-Union-Jackson-Ouachita-Winn-Grant-Caldwell-La Salle-
Including the cities of Ruston, Farmerville, Bernice, Jonesboro, 
Monroe, Winnfield, Colfax, Montgomery, Dry Prong, Clarks, 
Grayson, Columbia, Jena, Midway, and Olla
307 AM CDT Fri Jul 30 2021

...EXCESSIVE HEAT WARNING IN EFFECT FROM NOON TODAY TO 7 PM CDT
SATURDAY...

* WHAT...Dangerously hot conditions with heat index values up to 
  114 expected.

* WHERE...Lincoln Parish, Union Parish, Jackson Parish, Ouachita 
  Parish, Winn Parish, Grant Parish, Caldwell Parish and La 
  Salle Parish.

* WHEN...From noon today to 7 PM CDT Saturday.

* IMPACTS...Extreme heat and humidity will significantly 
  increase the potential for heat related illnesses, 
  particularly for those working or participating in outdoor 
  activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

ARZ050-051-059>061-070>073-LAZ001>004-010>012-017-018-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-301615-
/O.EXT.KSHV.HT.Y.0009.210730T1700Z-210801T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-De Soto-Red River-
Bienville-Sabine-Natchitoches-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, Mansfield, Stonewall, Logansport,
Coushatta, Martin, Arcadia, Ringgold, Gibsland, Many, Zwolle, 
Pleasant Hill, Natchitoches, 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
307 AM CDT Fri Jul 30 2021

...HEAT ADVISORY NOW IN EFFECT FROM NOON TODAY TO 7 PM CDT
SATURDAY...

* WHAT...For both Heat Advisories, heat index values up to 110 
  are expected.

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

* WHEN...From noon today to 7 PM CDT Saturday.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

44
775 
WWUS74 KSHV 301502
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
1002 AM CDT Fri Jul 30 2021

ARZ073-LAZ004-012-018-310315-
/O.UPG.KSHV.HT.Y.0009.210730T1700Z-210801T0000Z/
/O.EXA.KSHV.EH.W.0001.210730T1700Z-210801T0000Z/
Union-Claiborne-Bienville-Natchitoches-
Including the cities of El Dorado, Homer, Haynesville, Arcadia, 
Ringgold, Gibsland, and Natchitoches
1002 AM CDT Fri Jul 30 2021

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 7 PM CDT SATURDAY...

* WHAT...Dangerously hot conditions with heat index values up to 
  113 expected.

* WHERE...In Louisiana, Claiborne Parish, Bienville Parish and 
  Natchitoches Parish. In Arkansas, Union County.

* WHEN...From noon today to 7 PM CDT Saturday.

* IMPACTS...Extreme heat and humidity will significantly 
  increase the potential for heat related illnesses, 
  particularly for those working or participating in outdoor 
  activities.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

LAZ005-006-013-014-019>022-310315-
/O.CON.KSHV.EH.W.0001.210730T1700Z-210801T0000Z/
Lincoln-Union-Jackson-Ouachita-Winn-Grant-Caldwell-La Salle-
Including the cities of Ruston, Farmerville, Bernice, Jonesboro, 
Monroe, Winnfield, Colfax, Montgomery, Dry Prong, Clarks, 
Grayson, Columbia, Jena, Midway, and Olla
1002 AM CDT Fri Jul 30 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT
SATURDAY...

* WHAT...Dangerously hot conditions with heat index values up to 
  114 expected.

* WHERE...Lincoln Parish, Union Parish, Jackson Parish, Ouachita 
  Parish, Winn Parish, Grant Parish, Caldwell Parish and La 
  Salle Parish.

* WHEN...From noon today to 7 PM CDT Saturday.

* IMPACTS...Extreme heat and humidity will significantly 
  increase the potential for heat related illnesses, 
  particularly for those working or participating in outdoor 
  activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

ARZ050-051-059>061-070>072-LAZ001>003-010-011-017-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-310315-
/O.CON.KSHV.HT.Y.0009.210730T1700Z-210801T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Caddo-Bossier-Webster-De Soto-Red River-Sabine-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, Shreveport, Bossier City, Minden, Springhill, 
Mansfield, Stonewall, Logansport, Coushatta, Martin, Many, 
Zwolle, Pleasant Hill, 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
1002 AM CDT Fri Jul 30 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT SATURDAY...

* WHAT...For both Heat Advisories, heat index values up to 110 
  are expected.

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

* WHEN...From noon today to 7 PM CDT Saturday.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

16
618 
WWUS74 KSHV 301829
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
129 PM CDT Fri Jul 30 2021

ARZ073-LAZ004>006-012>014-018>022-310630-
/O.CON.KSHV.EH.W.0001.000000T0000Z-210801T0000Z/
Union-Claiborne-Lincoln-Bienville-Jackson-Ouachita-Natchitoches-
Winn-Grant-Caldwell-La Salle-
Including the cities of El Dorado, Homer, Haynesville, Ruston, 
Farmerville, Bernice, Arcadia, Ringgold, Gibsland, Jonesboro, 
Monroe, Natchitoches, Winnfield, Colfax, Montgomery, Dry Prong, 
Clarks, Grayson, Columbia, Jena, Midway, and Olla
129 PM CDT Fri Jul 30 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT
SATURDAY...

* WHAT...Dangerously hot conditions with heat index values up to 
  114 expected.

* WHERE...Union County AR, Lincoln Parish, Union Parish, Jackson 
  Parish, Ouachita Parish, Winn Parish, Grant Parish, Caldwell 
  Parish and La Salle Parish.

* WHEN...From noon today to 7 PM CDT Saturday.

* IMPACTS...Extreme heat and humidity will significantly 
  increase the potential for heat related illnesses, 
  particularly for those working or participating in outdoor 
  activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

ARZ050-051-059>061-070>072-LAZ001>003-010-011-017-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-310630-
/O.CON.KSHV.HT.Y.0009.000000T0000Z-210801T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Caddo-Bossier-Webster-De Soto-Red River-Sabine-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, Shreveport, Bossier City, Minden, Springhill, 
Mansfield, Stonewall, Logansport, Coushatta, Martin, Many, 
Zwolle, Pleasant Hill, 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
129 PM CDT Fri Jul 30 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT SATURDAY...

* WHAT...For both Heat Advisories, heat index values up to 110 
  are expected.

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

* WHEN...From noon today to 7 PM CDT Saturday.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

16
469 
WWUS74 KSHV 310746
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
246 AM CDT Sat Jul 31 2021

ARZ073-311600-
/O.CAN.KSHV.EH.W.0001.000000T0000Z-210801T0000Z/
/O.EXB.KSHV.HT.Y.0009.000000T0000Z-210802T0000Z/
Union-
Including the city of El Dorado
246 AM CDT Sat Jul 31 2021

...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT SUNDAY...
...EXCESSIVE HEAT WARNING IS CANCELLED...

* WHAT...Heat index values up to 110.

* WHERE...Union County.

* WHEN...Until 7 PM CDT Sunday.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

LAZ001>003-010-011-017-311600-
/O.UPG.KSHV.HT.Y.0009.000000T0000Z-210801T0000Z/
/O.EXB.KSHV.EH.W.0001.000000T0000Z-210802T0000Z/
Caddo-Bossier-Webster-De Soto-Red River-Sabine-
Including the cities of Shreveport, Bossier City, Minden, 
Springhill, Mansfield, Stonewall, Logansport, Coushatta, Martin, 
Many, Zwolle, and Pleasant Hill
246 AM CDT Sat Jul 31 2021

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 7 PM CDT SUNDAY...

* WHAT...Dangerously hot conditions with heat index values over
  110.

* WHERE...Caddo Parish, Bossier Parish, Webster Parish, De Soto 
  Parish, Red River Parish and Sabine Parish.

* WHEN...Until 7 PM CDT Sunday.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

LAZ004>006-012>014-018>022-311600-
/O.EXT.KSHV.EH.W.0001.000000T0000Z-210802T0000Z/
Claiborne-Lincoln-Union-Bienville-Jackson-Ouachita-Natchitoches-
Winn-Grant-Caldwell-La Salle-
Including the cities of Homer, Haynesville, Ruston, Farmerville, 
Bernice, Arcadia, Ringgold, Gibsland, Jonesboro, Monroe, 
Natchitoches, Winnfield, Colfax, Montgomery, Dry Prong, Clarks, 
Grayson, Columbia, Jena, Midway, and Olla
246 AM CDT Sat Jul 31 2021

...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 7 PM CDT SUNDAY...

* WHAT...Dangerously hot conditions with heat index values up to 
  114 expected.

* WHERE...Union County AR, Lincoln Parish, Union Parish, Jackson 
  Parish, Ouachita Parish, Winn Parish, Grant Parish, Caldwell 
  Parish and La Salle Parish.

* WHEN...Until 7 PM CDT Sunday.

* IMPACTS...Extreme heat and humidity will significantly 
  increase the potential for heat related illnesses, 
  particularly for those working or participating in outdoor 
  activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

ARZ050-051-059>061-070>072-OKZ077-TXZ096-097-108>112-124>126-
136>138-149>153-165>167-311600-
/O.EXT.KSHV.HT.Y.0009.000000T0000Z-210802T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-McCurtain-Red River-Bowie-Franklin-Titus-Camp-Morris-
Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-Panola-
Nacogdoches-Shelby-Angelina-San Augustine-Sabine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, 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
246 AM CDT Sat Jul 31 2021

...HEAT ADVISORY NOW IN EFFECT UNTIL 7 PM CDT SUNDAY...

* WHAT...For both Heat Advisories, heat index values up to 110 
  are expected.

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

* WHEN...Until 7 PM CDT Sunday.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

44
960 
WWUS74 KSHV 010035
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
735 PM CDT Sat Jul 31 2021

LAZ001>006-010>014-017>022-011200-
/O.CON.KSHV.EH.W.0001.000000T0000Z-210802T0000Z/
Caddo-Bossier-Webster-Claiborne-Lincoln-Union-De Soto-Red River-
Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-Grant-
Caldwell-La Salle-
Including the cities of 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, and Olla
735 PM CDT Sat Jul 31 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT
SUNDAY...

* WHAT...Dangerously hot conditions with heat index values over 
  110.

* WHERE...Caddo Parish, Bossier Parish, Webster Parish, De Soto 
  Parish, Red River Parish and Sabine Parish.

* WHEN...Until 7 PM CDT Sunday.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

ARZ050-051-059>061-070>073-OKZ077-TXZ096-097-108>112-124>126-
136>138-149>153-165>167-011200-
/O.CON.KSHV.HT.Y.0009.000000T0000Z-210802T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-McCurtain-Red River-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-Sabine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, 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
735 PM CDT Sat Jul 31 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT SUNDAY...

* WHAT...For both Heat Advisories, heat index values up to 109 
  are expected.

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

* WHEN...Until 7 PM CDT Sunday.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

33
560 
WWUS74 KSHV 010729
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
229 AM CDT Sun Aug 1 2021

LAZ001>006-010>014-017>022-020000-
/O.CON.KSHV.EH.W.0001.000000T0000Z-210802T0000Z/
Caddo-Bossier-Webster-Claiborne-Lincoln-Union-De Soto-Red River-
Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-Grant-
Caldwell-La Salle-
Including the cities of 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, and Olla
229 AM CDT Sun Aug 1 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

* WHAT...Dangerously hot conditions with heat index values over 
  110 degrees.

* WHERE...Caddo Parish, Bossier Parish, Webster Parish, De Soto 
  Parish, Red River Parish and Sabine Parish.

* WHEN...Until 7 PM CDT this evening.

* IMPACTS...Extreme heat and humidity will significantly 
  increase the potential for heat related illnesses, 
  particularly for those working or participating in outdoor 
  activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

ARZ050-051-059>061-070>073-OKZ077-TXZ096-097-108>112-124>126-
136>138-149>153-165>167-020000-
/O.CON.KSHV.HT.Y.0009.000000T0000Z-210802T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-McCurtain-Red River-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-Sabine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, 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
229 AM CDT Sun Aug 1 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* WHAT...Heat index values up to 109 degrees are expected.

* WHERE...Portions of North Central and Northwest Louisiana,
  Southeast Oklahoma, South Central and Southwest Arkansas and
  East and Northeast Texas.

* WHEN...Until 7 PM CDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

09
535 
WWUS74 KSHV 011435
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
935 AM CDT Sun Aug 1 2021

LAZ001>006-010>014-017>022-012245-
/O.CON.KSHV.EH.W.0001.000000T0000Z-210802T0000Z/
Caddo-Bossier-Webster-Claiborne-Lincoln-Union-De Soto-Red River-
Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-Grant-
Caldwell-La Salle-
Including the cities of 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, and Olla
935 AM CDT Sun Aug 1 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

* WHAT...Dangerously hot conditions with heat index values over 
  110 degrees.

* WHERE...Across much of northwest and north-central Louisiana.

* WHEN...Until 7 PM CDT this evening.

* IMPACTS...Extreme heat and humidity will significantly 
  increase the potential for heat related illnesses, 
  particularly for those working or participating in outdoor 
  activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

ARZ050-051-059>061-070>073-OKZ077-TXZ096-097-108>112-124>126-
136>138-149>153-165>167-012245-
/O.CON.KSHV.HT.Y.0009.000000T0000Z-210802T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-McCurtain-Red River-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-Sabine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, 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
935 AM CDT Sun Aug 1 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* WHAT...Heat index values up to 109 degrees are expected.

* WHERE...Across portions of southeast Oklahoma, South Central 
  and Southwest Arkansas and East and Northeast Texas.

* WHEN...Until 7 PM CDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$
204 
WWUS74 KSHV 011832
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
132 PM CDT Sun Aug 1 2021

LAZ001>006-010>014-017>022-020000-
/O.CON.KSHV.EH.W.0001.000000T0000Z-210802T0000Z/
Caddo-Bossier-Webster-Claiborne-Lincoln-Union-De Soto-Red River-
Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-Grant-
Caldwell-La Salle-
Including the cities of 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, and Olla
132 PM CDT Sun Aug 1 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

* WHAT...Dangerously hot conditions with heat index values over 
  110 degrees. 

* WHERE...Across much of northwest and north-central Louisiana.

* WHEN...Until 7 PM CDT this evening.

* IMPACTS...Extreme heat and humidity will significantly 
  increase the potential for heat related illnesses, 
  particularly for those working or participating in outdoor 
  activities. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

ARZ050-051-059>061-070>073-OKZ077-TXZ096-097-108>112-124>126-
136>138-149>153-165>167-020000-
/O.CON.KSHV.HT.Y.0009.000000T0000Z-210802T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-McCurtain-Red River-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-Sabine-
Including the cities of De Queen, Nashville, Mineral Springs, 
Dierks, Ashdown, Hope, Prescott, Texarkana, Stamps, Lewisville, 
Bradley, Magnolia, El Dorado, 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
132 PM CDT Sun Aug 1 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* WHAT...Heat index values up to 109 degrees are expected.

* WHERE...Across portions of southeast Oklahoma, South Central 
  and Southwest Arkansas and East and Northeast Texas. 

* WHEN...Until 7 PM CDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

What forecasters said that day

The local office's own words before this heat 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 heat advisory went out at Jul 29, 12:23 PM CDT, 1 hour 35 minutes earlier.

Area forecast discussion, Jul 29, 12:23 PM CDT, 1 hour 35 minutes before
Area Forecast Discussion
National Weather Service Shreveport LA
1223 PM CDT Thu Jul 29 2021

.AVIATION...

For the 29/18Z TAF update, VFR vis/cigs remain as the primary
flight condition through the entire period, with two exceptions.
The first exception arrives by the start of the period with -RA/-TSRA
forming across our southernmost airspace including KLFK (and
maybe KTYR) before diminishing by 29/00Z. That said, high pressure
will continue to build in across our airspace, limiting -RA/-TSRA
elsewhere. The second exception to VFR vis/cigs could arrive
across KMLU by 29/12Z in the form of patchy FG across our eastern
zones. Otherwise, very light and variable winds are expected
through the period. /16/

&&

.PREV DISCUSSION... /issued 940 AM CDT Thu Jul 29 2021/

UPDATE...

As of 9:30 AM, temperatures are already in the mid-80s with dew
points in the mid-70s, foreshadowing yet another hazardously hot
and humid afternoon. Any plans for daytime activity should account
for the heat appropriately through frequent breaks and hydration.
All weather trends areawide are continuing as anticipated with
light and variable winds and cloud decks dissipating nearly
completely. Ridging over the Great Plains continues to slowly
build southeast into the Ark-La-Tex, reinforcing temperatures
further into the upper 90s this afternoon. Isolated areas reaching
the triple digit mark cannot be ruled out, especially in
southwest Arkansas.

Therefore, no forecast adjustments or adjustments to the Heat
Advisory (in effect from noon to 7 PM today) were necessary at
this time. /16/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  77  99  78  99 /   0  10   0   0
MLU  77  99  76  99 /   0  10   0  10
DEQ  75  98  76  98 /   0   0   0   0
TXK  78 100  78  99 /   0   0   0   0
ELD  76  99  75 100 /   0   0   0   0
TYR  77  97  77  97 /   0  10   0   0
GGG  76  97  76  97 /   0  10   0   0
LFK  76  97  75  97 /  10  20   0  10

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...Heat Advisory until 7 PM CDT this evening for ARZ050-051-059>061-
     070>073.

LA...Heat Advisory until 7 PM CDT this evening for LAZ001>006-010>014-
     017>022.

OK...Heat Advisory until 7 PM CDT this evening for OKZ077.

TX...Heat Advisory until 7 PM CDT this evening for TXZ096-097-108>112-
     124>126-136>138-149>153-165>167.

&&

16/16
Hazardous weather outlook, Jul 29, 5:51 AM CDT, 8 hours 7 minutes before
Hazardous Weather Outlook
National Weather Service Shreveport LA
551 AM CDT Thu Jul 29 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>167-301100-
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-
551 AM CDT Thu Jul 29 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...

A Heat Advisory is in effect today for all of the Four State
Region. Temperatures will again climb into the mid and upper 90s
this afternoon across the area, and when combined with the
humidity, will result in heat indices ranging from 105 to 110
degrees. In addition, isolated to widely scattered showers and
thunderstorms will develop today over portions of East Texas and
North Louisiana, before diminishing by sunset.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

Very hot, humid, and mostly dry conditions will continue across
the region Friday through Sunday, as an upper level ridge of high
pressure begins to shift southeast into the area. This will result
in the hottest temperatures so far this summer, and when combined
with the humidity, will produce heat indices that will near or
exceed 105 degrees each day. However, a weak cool front will shift
south into the region late Sunday, which will focus an increase
in showers and thunderstorms over the area late Sunday through
Tuesday. The increased cloud cover and rain near and behind the
front will also contribute to slightly cooler temperatures Monday
through midweek.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel...amateur radio
operators...and storm spotters will not be needed through tonight.

15

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 5:15 PM CDTSpecial Weather StatementSHVWebster45 min
Jul 29, 4:58 PM CDTSpecial Weather StatementSHVCherokee47 min

Nearby

Heat Advisories in Texas, 2021Heat Advisories in Louisiana, 2021Heat Advisories in Arkansas, 2021Every heat 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.