Alert archive / Texas / Heat Advisories in 2021

Heat Advisory 13, NWS Shreveport, LA

August 23, 202110 counties in Texas

NWS Shreveport, LA issued this heat advisory at Aug 23, 2021, 2:41 PM CDT for 10 counties in Texas. It took effect at Aug 24, 2021, 10:00 AM CDT. It was in force for 33 hr.

The area

The counties it named.

The facts

Issued
Aug 23, 2021, 2:41 PM CDT (19:41 UTC)
In effect from
Aug 24, 2021, 10:00 AM CDT
Expired
Aug 25, 2021, 7:00 PM CDT
In force
33 hr
Issued by
NWS Shreveport, LA

Counties Camp County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Morris County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 114 km from the middle of the area, began a volume at 19:41 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, 7.7 hours before the alert went out and 121 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 2021-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 516 joules per kilogram.LCLLFCEL10008507005003002001001 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 2021-08-23The 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
516 J/kg
Mixed-layer CIN
-144 J/kg
Mixed-layer LCL
1342 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
8 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

738 
WWUS74 KSHV 231941
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
241 PM CDT Mon Aug 23 2021

LAZ006-014-021-240345-
/O.EXT.KSHV.EH.W.0002.000000T0000Z-210825T0000Z/
Union-Ouachita-Caldwell-
Including the cities of Farmerville, Bernice, Monroe, Clarks, 
Grayson, and Columbia
241 PM CDT Mon Aug 23 2021

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

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

* WHERE...Union Parish, Ouachita Parish and Caldwell Parish.

* WHEN...Until 7 PM CDT Tuesday.

* 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.

&&

$$

TXZ108>111-124-125-136-137-149-150-240345-
/O.NEW.KSHV.HT.Y.0013.210824T1500Z-210825T0000Z/
Franklin-Titus-Camp-Morris-Wood-Upshur-Smith-Gregg-Cherokee-Rusk-
Including the cities of Mount Vernon, Mount Pleasant, Pittsburg, 
Daingerfield, Lone Star, Naples, Omaha, Mineola, Winnsboro, 
Quitman, Hawkins, Gilmer, Big Sandy, Tyler, Longview, 
Jacksonville, Rusk, and Henderson
241 PM CDT Mon Aug 23 2021

...HEAT ADVISORY IN EFFECT FROM 10 AM TO 7 PM CDT TUESDAY...

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Franklin County, Titus County, Camp County, Morris 
  County, Wood County, Upshur County, Smith County, Gregg 
  County, Cherokee County and Rusk County.

* WHEN...From 10 AM to 7 PM CDT Tuesday.

* 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-LAZ001>005-010>013-017>020-022-OKZ077-
TXZ096-097-112-126-138-151>153-165>167-240345-
/O.EXT.KSHV.HT.Y.0012.000000T0000Z-210825T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Sabine-Natchitoches-Winn-Grant-
La Salle-McCurtain-Bowie-Cass-Marion-Harrison-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, Mansfield, Stonewall, 
Logansport, Coushatta, Martin, Arcadia, Ringgold, Gibsland, 
Jonesboro, Many, Zwolle, Pleasant Hill, Natchitoches, Winnfield, 
Colfax, Montgomery, Dry Prong, Jena, Midway, Olla, Idabel, 
Broken Bow, Clarksville, Bogata, Atlanta, Linden, Hughes Springs,
Queen City, Jefferson, Marshall, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
241 PM CDT Mon Aug 23 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Much of our four state area of southern Arkansas, 
  northern Louisiana, eastern Texas and southeast Oklahoma.

* WHEN...Until 7 PM CDT Tuesday.

* 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
7 follow-up statements
593 
WWUS74 KSHV 240306
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
1006 PM CDT Mon Aug 23 2021

LAZ006-014-021-241115-
/O.CON.KSHV.EH.W.0002.000000T0000Z-210825T0000Z/
Union-Ouachita-Caldwell-
Including the cities of Farmerville, Bernice, Monroe, Clarks, 
Grayson, and Columbia
1006 PM CDT Mon Aug 23 2021

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

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

* WHERE...Union Parish, Ouachita Parish and Caldwell Parish.

* WHEN...Until 7 PM CDT Tuesday.

* 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>005-010>013-017>020-022-OKZ077-
TXZ096-097-112-126-138-151>153-165>167-241115-
/O.CON.KSHV.HT.Y.0012.000000T0000Z-210825T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Sabine-Natchitoches-Winn-Grant-
La Salle-McCurtain-Bowie-Cass-Marion-Harrison-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, Mansfield, Stonewall, 
Logansport, Coushatta, Martin, Arcadia, Ringgold, Gibsland, 
Jonesboro, Many, Zwolle, Pleasant Hill, Natchitoches, Winnfield, 
Colfax, Montgomery, Dry Prong, Jena, Midway, Olla, Idabel, 
Broken Bow, Clarksville, Bogata, Atlanta, Linden, Hughes Springs,
Queen City, Jefferson, Marshall, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
1006 PM CDT Mon Aug 23 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Much of our four state area of southern Arkansas, 
  northern Louisiana, eastern Texas and southeast Oklahoma.

* WHEN...Until 7 PM CDT Tuesday.

* 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.

&&

$$

TXZ108>111-124-125-136-137-149-150-241115-
/O.CON.KSHV.HT.Y.0013.210824T1500Z-210825T0000Z/
Franklin-Titus-Camp-Morris-Wood-Upshur-Smith-Gregg-Cherokee-Rusk-
Including the cities of Mount Vernon, Mount Pleasant, Pittsburg, 
Daingerfield, Lone Star, Naples, Omaha, Mineola, Winnsboro, 
Quitman, Hawkins, Gilmer, Big Sandy, Tyler, Longview, 
Jacksonville, Rusk, and Henderson
1006 PM CDT Mon Aug 23 2021

...HEAT ADVISORY IS NOW IN EFFECT FROM 10 AM TO 7 PM CDT 
TUESDAY...

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Franklin County, Titus County, Camp County, Morris 
  County, Wood County, Upshur County, Smith County, Gregg 
  County, Cherokee County and Rusk County.

* WHEN...From 10 AM to 7 PM CDT Tuesday.

* 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.

&&

$$

20
894 
WWUS74 KSHV 240932
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
432 AM CDT Tue Aug 24 2021

LAZ006-014-021-250000-
/O.CON.KSHV.EH.W.0002.000000T0000Z-210825T0000Z/
Union-Ouachita-Caldwell-
Including the cities of Farmerville, Bernice, Monroe, Clarks, 
Grayson, and Columbia
432 AM CDT Tue Aug 24 2021

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

* WHAT...Dangerously hot conditions with heat index values up to
  114 will be possible.

* WHERE...Union Parish, Ouachita Parish and Caldwell Parish.

* WHEN...Until 7 PM CDT Tuesday.

* 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>005-010>013-017>020-022-OKZ077-
TXZ096-097-112-126-138-151>153-165>167-250000-
/O.CON.KSHV.HT.Y.0012.000000T0000Z-210825T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Sabine-Natchitoches-Winn-Grant-
La Salle-McCurtain-Bowie-Cass-Marion-Harrison-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, Mansfield, Stonewall, 
Logansport, Coushatta, Martin, Arcadia, Ringgold, Gibsland, 
Jonesboro, Many, Zwolle, Pleasant Hill, Natchitoches, Winnfield, 
Colfax, Montgomery, Dry Prong, Jena, Midway, Olla, Idabel, 
Broken Bow, Clarksville, Bogata, Atlanta, Linden, Hughes Springs,
Queen City, Jefferson, Marshall, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
432 AM CDT Tue Aug 24 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Much of our four state area of southern Arkansas, 
  northern Louisiana, eastern Texas and southeast Oklahoma.

* WHEN...Until 7 PM CDT Tuesday.

* 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.

&&

$$

TXZ108>111-124-125-136-137-149-150-250000-
/O.CON.KSHV.HT.Y.0013.210824T1500Z-210825T0000Z/
Franklin-Titus-Camp-Morris-Wood-Upshur-Smith-Gregg-Cherokee-Rusk-
Including the cities of Mount Vernon, Mount Pleasant, Pittsburg, 
Daingerfield, Lone Star, Naples, Omaha, Mineola, Winnsboro, 
Quitman, Hawkins, Gilmer, Big Sandy, Tyler, Longview, 
Jacksonville, Rusk, and Henderson
432 AM CDT Tue Aug 24 2021

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
7 PM CDT THIS EVENING...

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Franklin County, Titus County, Camp County, Morris 
  County, Wood County, Upshur County, Smith County, Gregg 
  County, Cherokee County and Rusk County.

* WHEN...From 10 AM to 7 PM CDT Tuesday.

* 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.

&&

$$

24
749 
WWUS74 KSHV 241537
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
1037 AM CDT Tue Aug 24 2021

LAZ006-014-021-242345-
/O.CON.KSHV.EH.W.0002.000000T0000Z-210825T0000Z/
Union-Ouachita-Caldwell-
Including the cities of Farmerville, Bernice, Monroe, Clarks, 
Grayson, and Columbia
1037 AM CDT Tue Aug 24 2021

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

* WHAT...Dangerously hot conditions with heat index values up to 
  114 will be possible.

* WHERE...Union Parish, Ouachita Parish and Caldwell Parish.

* WHEN...Until 7 PM CDT Tuesday.

* 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>005-010>013-017>020-022-OKZ077-
TXZ096-097-112-126-138-151>153-165>167-242345-
/O.CON.KSHV.HT.Y.0012.000000T0000Z-210825T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Sabine-Natchitoches-Winn-Grant-
La Salle-McCurtain-Bowie-Cass-Marion-Harrison-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, Mansfield, Stonewall, 
Logansport, Coushatta, Martin, Arcadia, Ringgold, Gibsland, 
Jonesboro, Many, Zwolle, Pleasant Hill, Natchitoches, Winnfield, 
Colfax, Montgomery, Dry Prong, Jena, Midway, Olla, Idabel, 
Broken Bow, Clarksville, Bogata, Atlanta, Linden, Hughes Springs,
Queen City, Jefferson, Marshall, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
1037 AM CDT Tue Aug 24 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Much of our four state area of southern Arkansas, 
  northern Louisiana, eastern Texas and southeast Oklahoma.

* WHEN...Until 7 PM CDT Tuesday.

* 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.

&&

$$

TXZ108>111-124-125-136-137-149-150-242345-
/O.CON.KSHV.HT.Y.0013.000000T0000Z-210825T0000Z/
Franklin-Titus-Camp-Morris-Wood-Upshur-Smith-Gregg-Cherokee-Rusk-
Including the cities of Mount Vernon, Mount Pleasant, Pittsburg, 
Daingerfield, Lone Star, Naples, Omaha, Mineola, Winnsboro, 
Quitman, Hawkins, Gilmer, Big Sandy, Tyler, Longview, 
Jacksonville, Rusk, and Henderson
1037 AM CDT Tue Aug 24 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Franklin County, Titus County, Camp County, Morris 
  County, Wood County, Upshur County, Smith County, Gregg 
  County, Cherokee County and Rusk County.

* WHEN...From 10 AM to 7 PM CDT Tuesday.

* 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
792 
WWUS74 KSHV 241937
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
237 PM CDT Tue Aug 24 2021

LAZ006-014-021-250345-
/O.EXB.KSHV.HT.Y.0012.210825T0000Z-210826T0000Z/
/O.CON.KSHV.EH.W.0002.000000T0000Z-210825T0000Z/
Union-Ouachita-Caldwell-
Including the cities of Farmerville, Bernice, Monroe, Clarks, 
Grayson, and Columbia
237 PM CDT Tue Aug 24 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...
...HEAT ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 7 PM CDT
WEDNESDAY...

* WHAT...For the Excessive Heat Warning, dangerously hot 
  conditions with heat index values up to 114. For the Heat 
  Advisory, heat index values up to 109 expected.

* WHERE...Union Parish, Ouachita Parish and Caldwell Parish.

* WHEN...For the Excessive Heat Warning, until 7 PM CDT this 
  evening. For the Heat Advisory, from 7 PM this evening to 7 PM 
  CDT Wednesday.

* 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-LAZ001>005-010>013-017>020-022-OKZ077-
TXZ096-097-112-126-138-151>153-165>167-250345-
/O.EXT.KSHV.HT.Y.0012.000000T0000Z-210826T0000Z/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Sabine-Natchitoches-Winn-Grant-
La Salle-McCurtain-Bowie-Cass-Marion-Harrison-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, Mansfield, Stonewall, 
Logansport, Coushatta, Martin, Arcadia, Ringgold, Gibsland, 
Jonesboro, Many, Zwolle, Pleasant Hill, Natchitoches, Winnfield, 
Colfax, Montgomery, Dry Prong, Jena, Midway, Olla, Idabel, 
Broken Bow, Clarksville, Bogata, Atlanta, Linden, Hughes Springs,
Queen City, Jefferson, Marshall, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
237 PM CDT Tue Aug 24 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Much of our four state area of southern Arkansas, 
  northern Louisiana, eastern Texas and southeast Oklahoma.

* WHEN...Until 7 PM CDT Wednesday.

* 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.

&&

$$

TXZ108>111-124-125-136-137-149-150-250345-
/O.EXT.KSHV.HT.Y.0013.000000T0000Z-210826T0000Z/
Franklin-Titus-Camp-Morris-Wood-Upshur-Smith-Gregg-Cherokee-Rusk-
Including the cities of Mount Vernon, Mount Pleasant, Pittsburg, 
Daingerfield, Lone Star, Naples, Omaha, Mineola, Winnsboro, 
Quitman, Hawkins, Gilmer, Big Sandy, Tyler, Longview, 
Jacksonville, Rusk, and Henderson
237 PM CDT Tue Aug 24 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Franklin County, Titus County, Camp County, Morris 
  County, Wood County, Upshur County, Smith County, Gregg 
  County, Cherokee County and Rusk County.

* WHEN...Until 7 PM CDT Wednesday.

* 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
616 
WWUS74 KSHV 250334
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
1034 PM CDT Tue Aug 24 2021

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-112-126-138-151>153-165>167-251145-
/O.CON.KSHV.HT.Y.0012.000000T0000Z-210826T0000Z/
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-Cass-Marion-Harrison-
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, Atlanta, Linden, Hughes Springs,
Queen City, Jefferson, Marshall, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
1034 PM CDT Tue Aug 24 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Much of our four state area of southern Arkansas, 
  northern Louisiana, eastern Texas and southeast Oklahoma.

* WHEN...Until 7 PM CDT Wednesday.

* 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.

&&

$$

TXZ108>111-124-125-136-137-149-150-251145-
/O.CON.KSHV.HT.Y.0013.000000T0000Z-210826T0000Z/
Franklin-Titus-Camp-Morris-Wood-Upshur-Smith-Gregg-Cherokee-Rusk-
Including the cities of Mount Vernon, Mount Pleasant, Pittsburg, 
Daingerfield, Lone Star, Naples, Omaha, Mineola, Winnsboro, 
Quitman, Hawkins, Gilmer, Big Sandy, Tyler, Longview, 
Jacksonville, Rusk, and Henderson
1034 PM CDT Tue Aug 24 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Franklin County, Titus County, Camp County, Morris 
  County, Wood County, Upshur County, Smith County, Gregg 
  County, Cherokee County and Rusk County.

* WHEN...Until 7 PM CDT Wednesday.

* 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.

&&

$$

20
453 
WWUS74 KSHV 250946
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
446 AM CDT Wed Aug 25 2021

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-112-126-138-151>153-165>167-260000-
/O.CON.KSHV.HT.Y.0012.000000T0000Z-210826T0000Z/
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-Cass-Marion-Harrison-
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, Atlanta, Linden, Hughes Springs,
Queen City, Jefferson, Marshall, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
446 AM CDT Wed Aug 25 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Much of our four state area of southern Arkansas, 
  northern Louisiana, eastern Texas and southeast Oklahoma.

* WHEN...Until 7 PM CDT Wednesday.

* 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.

&&

$$

TXZ108>111-124-125-136-137-149-150-260000-
/O.CON.KSHV.HT.Y.0013.000000T0000Z-210826T0000Z/
Franklin-Titus-Camp-Morris-Wood-Upshur-Smith-Gregg-Cherokee-Rusk-
Including the cities of Mount Vernon, Mount Pleasant, Pittsburg, 
Daingerfield, Lone Star, Naples, Omaha, Mineola, Winnsboro, 
Quitman, Hawkins, Gilmer, Big Sandy, Tyler, Longview, 
Jacksonville, Rusk, and Henderson
446 AM CDT Wed Aug 25 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Franklin County, Titus County, Camp County, Morris 
  County, Wood County, Upshur County, Smith County, Gregg 
  County, Cherokee County and Rusk County.

* WHEN...Until 7 PM CDT Wednesday.

* 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.

&&

$$

24
432 
WWUS74 KSHV 251553
NPWSHV

URGENT - WEATHER MESSAGE
National Weather Service Shreveport LA
1053 AM CDT Wed Aug 25 2021

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-112-126-138-151>153-165>167-260000-
/O.CON.KSHV.HT.Y.0012.000000T0000Z-210826T0000Z/
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-Cass-Marion-Harrison-
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, Atlanta, Linden, Hughes Springs,
Queen City, Jefferson, Marshall, Carthage, Nacogdoches, Center, 
Lufkin, San Augustine, Hemphill, and Pineland
1053 AM CDT Wed Aug 25 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Much of our four state area of southern Arkansas, 
  northern Louisiana, eastern Texas and southeast Oklahoma.

* WHEN...Until 7 PM CDT Wednesday.

* 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.

&&

$$

TXZ108>111-124-125-136-137-149-150-260000-
/O.CON.KSHV.HT.Y.0013.000000T0000Z-210826T0000Z/
Franklin-Titus-Camp-Morris-Wood-Upshur-Smith-Gregg-Cherokee-Rusk-
Including the cities of Mount Vernon, Mount Pleasant, Pittsburg, 
Daingerfield, Lone Star, Naples, Omaha, Mineola, Winnsboro, 
Quitman, Hawkins, Gilmer, Big Sandy, Tyler, Longview, 
Jacksonville, Rusk, and Henderson
1053 AM CDT Wed Aug 25 2021

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

* WHAT...Heat index values from 105 to 109 degrees are expected.

* WHERE...Franklin County, Titus County, Camp County, Morris 
  County, Wood County, Upshur County, Smith County, Gregg 
  County, Cherokee County and Rusk County.

* WHEN...Until 7 PM CDT Wednesday.

* 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

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 Aug 23, 12:38 PM CDT, 2 hours 3 minutes earlier.

Area forecast discussion, Aug 23, 12:38 PM CDT, 2 hours 3 minutes before
Area Forecast Discussion
National Weather Service Shreveport LA
1238 PM CDT Mon Aug 23 2021

.AVIATION...

For the 23/18z TAFs...Seeing an increase in cu this afternoon
across much of the area with it most noticeable across our
southwest zones of north central Louisiana. Expecting this trend
to continue through the day. There is a chance for some isolated
showers and thunderstorms this afternoon across our southeastern
zones. Not expecting these to become very widespread and the only
terminal they could impact would be KMLU where I have mention of
VCTS for this afternoon. We could see some fog develop across
portions of the area towards sunrise Tuesday morning so do have
some mention of BR in as well for a few sites. /33/

&&

.PREV DISCUSSION... /issued 1102 AM CDT Mon Aug 23 2021/

UPDATE...

Temperatures across the region late this morning range from the
mid 80s to just around the 90 degree mark. Heat index temperatures
are already climbing into the upper 90s to lower 100s across the
area. I have confirmation from the field that it is already really
hot out there. Use caution if you are doing any form of work
outdoors and know the signs of heat related illnesses. Inherited
forecast for today appears to be on track so no major changes
needed. Look for highs to top out this afternoon in the mid to
upper 90s across the area. There remains a chance for some
isolated convection across our far southeastern zones this
afternoon. /33/

PREV DISCUSSION... /issued 404 AM CDT Mon Aug 23 2021/

SHORT TERM.../Today through Tuesday/

Warm and muggy this morning with little in the way of any wind.
Most sites are calm and somewhere in the 70s with the coolest of
72 at a handful of E TX sites. The warm spot has finally dropped
out of the 80s this hour with 78 now in Texarkana and also at
Natchitoches. Downtown surrounded by warm river water takes the
cake this hour with 79 degrees.

There are few clouds for the area as a whole, but some scattered
to broken middeck around 15kft and the freezing level are
hovering over our parishes with even a gentle clockwise motion as
if to say here is the core of the upper high. These will thin out
by late morning with heating and partly cloudy skies will usher
the mercury quickly back into the 90s. Highs today will continue
to edge into the upper 90s for most of us.

The cooler readings in E TX also represent less moisture in the
air with dew points at 71 or 72. Once again decent mixing with SW
winds should keep the mercury just below heat advisory criteria
for a couple of N to S rows of our TX counties. Everywhere else
remains in an advisory until 7pm. In addition, the Excessive heat
warning describes where the heat index will be over 110 due to
higher dew points in the middle 70s in our delta parishes. Little
change is likely in the short term period, if anything we may see
more of our area back in the advisory in TX and more delta parishes
perhaps added to the EHW for our Tuesday. /24/

LONG TERM.../Tuesday Night through Monday/

To begin the long term portion of the forecast, the upper ridge
axis, responsible for the oppressive heat across the Four State
Region, will likely be displaced further north and west of our
region from Eastern New Mexico into Central Oklahoma and Northern
Arkansas. Our region will be close enough to the ridge axis itself
for another day of hot temperatures but close enough to see an
influence from easterlies across the southern edge of the ridge on
Wed. These easterlies will likely result in mostly diurnally driven
isolated to scattered convection across our southeast half and this
will be the case through much of the remaining portions of the work
week.

As we move into the later half of the work week, the upper ridge
migrates north and east, into the Central Plains and Ohio Valley on
Thu and into the Appalachians by Friday as an upper trough migrates
underneath the ridge, north and west out of the NE Gulf of Mexico
and into the Southeast U.S. At this time, it appears that this
disturbance will remain far enough east of our region such that we
will continue to see only isolated to scattered convection each
afternoon, again more heavily weighted across our southeast zones
but the progression of this trough caught up in the easterlies will
continue to be closely watched through the week. If anything, the
influx of moisture and relocation of the upper ridge should help to
taper temps somewhat by late week into next weekend but only by a
few degrees. /13/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  97  77  99  79 /   0   0  10  10
MLU  97  78  98  76 /  20   0  20  20
DEQ  95  74  97  75 /   0   0   0   0
TXK  98  78  99  77 /   0   0   0   0
ELD  96  75  97  75 /  10  10  10  10
TYR  96  77  97  77 /   0   0   0   0
GGG  95  75  97  76 /   0   0   0   0
LFK  99  76  99  76 /   0   0  10  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>005-010>013-
     017>020-022.

     Excessive Heat Warning until 7 PM CDT this evening for LAZ006-
     014-021.

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

TX...Heat Advisory until 7 PM CDT this evening for TXZ096-097-112-126-
     138-151>153-165>167.

&&

24/13/33
Hazardous weather outlook, Aug 23, 3:58 AM CDT, 10 hours 43 minutes before
Hazardous Weather Outlook
National Weather Service Shreveport LA
358 AM CDT Mon Aug 23 2021

ARZ050-051-059>061-070>073-LAZ001>005-010>013-017>020-022-OKZ077-
TXZ096-097-112-126-138-151>153-165>167-241200-
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Sabine-Natchitoches-Winn-Grant-
La Salle-McCurtain-Bowie-Cass-Marion-Harrison-Panola-Nacogdoches-
Shelby-Angelina-San Augustine-
358 AM CDT Mon Aug 23 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 through 7 pm this evening. Look for
afternoon heat indices to reach or exceed 105 degrees. Otherwise,
no hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday...

It will remain hot across the region through much of this week.
Small chances for afternoon and early evening thunderstorms will
begin across portions of the region by the middle part of the week
through the upcoming weekend but no organized severe weather is
expected at this time.

.SPOTTER INFORMATION STATEMENT...

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

LAZ006-014-021-241200-
Union-Ouachita-Caldwell-
358 AM CDT Mon Aug 23 2021

This Hazardous Weather Outlook is for portions of north central
Louisiana.

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

An Excessive Heat Warning is in effect from 11 am through 7 pm
this evening. Look for afternoon Heat Index values to meet or
exceed 110 degrees. Isolated late afternoon and early evening
thunderstorms will be possible across portions of the region
today. No organized severe weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday...

It will remain hot across the region through much of this week.
Small chances for afternoon and early evening thunderstorms will
begin across portions of the region by the middle part of the week
through the upcoming weekend but no organized severe weather is
expected at this time.

.SPOTTER INFORMATION STATEMENT...

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

TXZ108>111-124-125-136-137-149-150-241200-
Franklin-Titus-Camp-Morris-Wood-Upshur-Smith-Gregg-Cherokee-Rusk-
358 AM CDT Mon Aug 23 2021

This Hazardous Weather Outlook is for portions of northeast
Texas.

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

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday...

It will remain hot across the region through much of this week.
Small chances for afternoon and early evening thunderstorms will
begin across portions of the region by the middle part of the week
through the upcoming weekend but no organized severe weather is
expected at this time.

.SPOTTER INFORMATION STATEMENT...

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

13

Nearby

Heat Advisories in Texas, 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.