Alert archive / Oklahoma / Excessive Heat Warnings in 2023

Excessive Heat Warning 21, NWS Tulsa, OK

August 21, 202322 counties in Oklahoma; 4 counties in Arkansas

NWS Tulsa, OK issued this excessive heat warning at Aug 21, 2023, 2:23 AM CDT for 22 counties in Oklahoma; 4 counties in Arkansas. It took effect at Aug 22, 2023, 11:00 AM CDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 21, 2023, 2:23 AM CDT (07:23 UTC)
In effect from
Aug 22, 2023, 11:00 AM CDT
Expired
Aug 22, 2023, 8:00 PM CDT
In force
9 hr
Issued by
NWS Tulsa, OK
All 26 counties

Benton County, AR, Carroll County, AR, Madison County, AR, Washington County, AR, Adair County, OK, Cherokee County, OK, Choctaw County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Ottawa County, OK, Pawnee County, OK, Pittsburg County, OK, Pushmataha County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 42 km from the middle of the area, began a volume at 07:28 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

Springfield, MO (KSGF), launched 00:00Z, 7.4 hours before the alert went out and 176 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, Springfield, MO at 00:00Z on 2023-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1225 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, Springfield, MO at 00:00Z on 2023-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 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
1225 J/kg
Mixed-layer CIN
-163 J/kg
Mixed-layer LCL
2798 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
39 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

987 
WWUS74 KTSA 210723
NPWTSA

URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
223 AM CDT Mon Aug 21 2023

ARZ001-002-010-011-019-020-029-OKZ049-053>076-211530-
/O.NEW.KTSA.EH.W.0021.230822T1600Z-230823T0100Z/
/O.CON.KTSA.EH.W.0020.230821T1600Z-230822T0100Z/
Benton-Carroll-Washington AR-Madison-Crawford-Franklin-Sebastian-
Pushmataha-Choctaw-Osage-Washington OK-Nowata-Craig-Ottawa-Pawnee-
Tulsa-Rogers-Mayes-Delaware-Creek-Okfuskee-Okmulgee-Wagoner-
Cherokee-Adair-Muskogee-McIntosh-Sequoyah-Pittsburg-Haskell-
Latimer-Le Flore-
Including the cities of Rogers, Bentonville, Berryville, 
Eureka Springs, Fayetteville, Springdale, Huntsville, Van Buren, 
Ozark, Charleston, Fort Smith, Antlers, Clayton, Hugo, Pawhuska, 
Bartlesville, Nowata, Vinita, Miami, Pawnee, Tulsa, Claremore, 
Pryor, Grove, Jay, Sapulpa, Okemah, Okmulgee, Wagoner, Tahlequah,
Stilwell, Muskogee, Checotah, Sallisaw, McAlester, Stigler, 
Wilburton, and Poteau
223 AM CDT Mon Aug 21 2023

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS
MORNING TO 8 PM CDT THIS EVENING...
...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM CDT
TUESDAY...

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

* WHERE...Portions of northwest and west central Arkansas and 
  east central, northeast and southeast Oklahoma.

* WHEN...For the first Excessive Heat Warning, from 11 AM this 
  morning to 8 PM CDT this evening. For the second Excessive 
  Heat Warning, from 11 AM to 8 PM CDT Tuesday.

* IMPACTS...Hot temperatures and high humidity will combine to
  create a dangerous situation in which heat illnesses are
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 light weight and loose fitting clothing when
possible and drink plenty of water. 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 911.

&&

$$

Stay tuned to NOAA weather radio,commercial radio or television
for the latest information,forecasts,and warnings.
For more information from the National Weather Service visit
https://weather.gov/tsa
8 follow-up statements
343 
WWUS74 KTSA 211515
NPWTSA

URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
1015 AM CDT Mon Aug 21 2023

ARZ001-002-010-011-019-020-029-OKZ049-053>076-212100-
/O.CON.KTSA.EH.W.0020.230821T1600Z-230822T0100Z/
/O.CON.KTSA.EH.W.0021.230822T1600Z-230823T0100Z/
Benton-Carroll-Washington AR-Madison-Crawford-Franklin-Sebastian-
Pushmataha-Choctaw-Osage-Washington OK-Nowata-Craig-Ottawa-Pawnee-
Tulsa-Rogers-Mayes-Delaware-Creek-Okfuskee-Okmulgee-Wagoner-
Cherokee-Adair-Muskogee-McIntosh-Sequoyah-Pittsburg-Haskell-
Latimer-Le Flore-
Including the cities of Rogers, Bentonville, Berryville, 
Eureka Springs, Fayetteville, Springdale, Huntsville, Van Buren, 
Ozark, Charleston, Fort Smith, Antlers, Clayton, Hugo, Pawhuska, 
Bartlesville, Nowata, Vinita, Miami, Pawnee, Tulsa, Claremore, 
Pryor, Grove, Jay, Sapulpa, Okemah, Okmulgee, Wagoner, Tahlequah,
Stilwell, Muskogee, Checotah, Sallisaw, McAlester, Stigler, 
Wilburton, and Poteau
1015 AM CDT Mon Aug 21 2023

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS
EVENING...
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT TUESDAY...

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

* WHERE...Portions of northwest and west central Arkansas and 
  east central, northeast and southeast Oklahoma.

* WHEN...For the first Excessive Heat Warning, from 11 AM this 
  morning to 8 PM CDT this evening. For the second Excessive 
  Heat Warning, from 11 AM to 8 PM CDT Tuesday.

* IMPACTS...Hot temperatures and high humidity will combine to 
  create a dangerous situation in which heat illnesses are 
  possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 light weight and loose fitting clothing when
possible and drink plenty of water. 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 911.

&&

$$

Stay tuned to NOAA weather radio,commercial radio or television
for the latest information,forecasts,and warnings.
For more information from the National Weather Service visit
https://weather.gov/tsa
986 
WWUS74 KTSA 211750
NPWTSA

URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
1250 PM CDT Mon Aug 21 2023

ARZ001-002-010-011-019-020-029-OKZ049-053>076-221000-
/O.NEW.KTSA.EH.W.0022.230823T1600Z-230824T0100Z/
/O.CON.KTSA.EH.W.0020.000000T0000Z-230822T0100Z/
/O.CON.KTSA.EH.W.0021.230822T1600Z-230823T0100Z/
Benton-Carroll-Washington AR-Madison-Crawford-Franklin-Sebastian-
Pushmataha-Choctaw-Osage-Washington OK-Nowata-Craig-Ottawa-Pawnee-
Tulsa-Rogers-Mayes-Delaware-Creek-Okfuskee-Okmulgee-Wagoner-
Cherokee-Adair-Muskogee-McIntosh-Sequoyah-Pittsburg-Haskell-
Latimer-Le Flore-
Including the cities of Rogers, Bentonville, Berryville, 
Eureka Springs, Fayetteville, Springdale, Huntsville, Van Buren, 
Ozark, Charleston, Fort Smith, Antlers, Clayton, Hugo, Pawhuska, 
Bartlesville, Nowata, Vinita, Miami, Pawnee, Tulsa, Claremore, 
Pryor, Grove, Jay, Sapulpa, Okemah, Okmulgee, Wagoner, Tahlequah,
Stilwell, Muskogee, Checotah, Sallisaw, McAlester, Stigler, 
Wilburton, and Poteau
1250 PM CDT Mon Aug 21 2023

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS
EVENING...
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT TUESDAY AND WEDNESDAY... 

* WHAT...Dangerously hot conditions with heat index values of 110
  to 120 degrees. Warm overnight low temperatures around 80 
  degrees within urban areas.

* WHERE...Portions of northwest and west central Arkansas and 
  east central, northeast and southeast Oklahoma.

* WHEN...Through 8 PM CDT this evening. Also 11 AM to 8 PM CDT
  both Tuesday and Wednesday.

* IMPACTS...Hot temperatures and high humidity will combine to
  create a dangerous situation in which heat illnesses are
  possible. Overnight low temperatures will remain warm,
  especially across urban areas, providing little to no heat 
  stress relief.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 light weight and loose fitting clothing when
possible and drink plenty of water. 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 911.

&&

$$

Stay tuned to NOAA weather radio,commercial radio or television
for the latest information,forecasts,and warnings.
For more information from the National Weather Service visit
https://weather.gov/tsa
156 
WWUS74 KTSA 220052
NPWTSA

URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
752 PM CDT Mon Aug 21 2023

OKZ049-053-220900-
/O.CAN.KTSA.EH.W.0020.000000T0000Z-230822T0100Z/
/O.CON.KTSA.EH.W.0021.230822T1600Z-230823T0100Z/
/O.CON.KTSA.EH.W.0022.230823T1600Z-230824T0100Z/
Pushmataha-Choctaw-
Including the cities of Antlers, Clayton, and Hugo
752 PM CDT Mon Aug 21 2023

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT TUESDAY...
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT WEDNESDAY...
...EXCESSIVE HEAT WARNING IS CANCELLED FOR THIS EVENING...

* WHAT...Dangerously hot conditions with heat index values of 
  110 to 120 degrees. Warm overnight low temperatures around 80 
  degrees within urban areas.

* WHERE...Pushmataha and Choctaw Counties.

* WHEN...For the first Excessive Heat Warning, from 11 AM to 8 
  PM CDT Tuesday. For the second Excessive Heat Warning, from 11 
  AM to 8 PM CDT Wednesday.

* IMPACTS...Hot temperatures and high humidity will combine to 
  create a dangerous situation in which heat illnesses are 
  possible. Overnight low temperatures will remain warm, 
  especially across urban areas, providing little to no heat 
  stress relief.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 light weight and loose fitting clothing when
possible and drink plenty of water. 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 911.

&&

$$

ARZ001-002-010-011-019-020-029-OKZ054>076-220900-
/O.EXT.KTSA.EH.W.0020.000000T0000Z-230822T0200Z/
/O.CON.KTSA.EH.W.0021.230822T1600Z-230823T0100Z/
/O.CON.KTSA.EH.W.0022.230823T1600Z-230824T0100Z/
Benton-Carroll-Washington AR-Madison-Crawford-Franklin-Sebastian-
Osage-Washington OK-Nowata-Craig-Ottawa-Pawnee-Tulsa-Rogers-Mayes-
Delaware-Creek-Okfuskee-Okmulgee-Wagoner-Cherokee-Adair-Muskogee-
McIntosh-Sequoyah-Pittsburg-Haskell-Latimer-Le Flore-
Including the cities of Rogers, Bentonville, Berryville, 
Eureka Springs, Fayetteville, Springdale, Huntsville, Van Buren, 
Ozark, Charleston, Fort Smith, Pawhuska, Bartlesville, Nowata, 
Vinita, Miami, Pawnee, Tulsa, Claremore, Pryor, Grove, Jay, 
Sapulpa, Okemah, Okmulgee, Wagoner, Tahlequah, Stilwell, 
Muskogee, Checotah, Sallisaw, McAlester, Stigler, Wilburton, 
and Poteau
752 PM CDT Mon Aug 21 2023

...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 9 PM CDT THIS
EVENING...
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT TUESDAY...
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT WEDNESDAY...

* WHAT...Dangerously hot conditions with heat index values of 
  110 to 120 degrees. Warm overnight low temperatures around 80 
  degrees within urban areas.

* WHERE...Portions of northwest and west central Arkansas and 
  east central, northeast and southeast Oklahoma.

* WHEN...For the first Excessive Heat Warning, until 9 PM CDT 
  this evening. For the second Excessive Heat Warning, from 11 
  AM to 8 PM CDT Tuesday. For the third Excessive Heat Warning, 
  from 11 AM to 8 PM CDT Wednesday.

* IMPACTS...Hot temperatures and high humidity will combine to 
  create a dangerous situation in which heat illnesses are 
  possible. Overnight low temperatures will remain warm, 
  especially across urban areas, providing little to no heat 
  stress relief.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 light weight and loose fitting clothing when
possible and drink plenty of water. 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 911.

&&

$$

Stay tuned to NOAA weather radio,commercial radio or television
for the latest information,forecasts,and warnings.
For more information from the National Weather Service visit
https://weather.gov/tsa
638 
WWUS74 KTSA 220154
NPWTSA

URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
854 PM CDT Mon Aug 21 2023

ARZ001-002-010-011-019-020-029-OKZ054>076-221000-
/O.EXP.KTSA.EH.W.0020.000000T0000Z-230822T0200Z/
/O.CON.KTSA.EH.W.0021.230822T1600Z-230823T0100Z/
/O.CON.KTSA.EH.W.0022.230823T1600Z-230824T0100Z/
Benton-Carroll-Washington AR-Madison-Crawford-Franklin-Sebastian-
Osage-Washington OK-Nowata-Craig-Ottawa-Pawnee-Tulsa-Rogers-Mayes-
Delaware-Creek-Okfuskee-Okmulgee-Wagoner-Cherokee-Adair-Muskogee-
McIntosh-Sequoyah-Pittsburg-Haskell-Latimer-Le Flore-
Including the cities of Rogers, Bentonville, Berryville, 
Eureka Springs, Fayetteville, Springdale, Huntsville, Van Buren, 
Ozark, Charleston, Fort Smith, Pawhuska, Bartlesville, Nowata, 
Vinita, Miami, Pawnee, Tulsa, Claremore, Pryor, Grove, Jay, 
Sapulpa, Okemah, Okmulgee, Wagoner, Tahlequah, Stilwell, 
Muskogee, Checotah, Sallisaw, McAlester, Stigler, Wilburton, 
and Poteau
854 PM CDT Mon Aug 21 2023

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT TUESDAY...
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT WEDNESDAY...
...EXCESSIVE HEAT WARNING WILL EXPIRE AT 9 PM CDT THIS EVENING...

* WHAT...Dangerously hot conditions with heat index values of 
  110 to 120 degrees. Warm overnight low temperatures around 80 
  degrees within urban areas.

* WHERE...Portions of northwest and west central Arkansas and 
  east central, northeast and southeast Oklahoma.

* WHEN...For the first Excessive Heat Warning, until 9 PM CDT 
  this evening. For the second Excessive Heat Warning, from 11 
  AM to 8 PM CDT Tuesday. For the third Excessive Heat Warning, 
  from 11 AM to 8 PM CDT Wednesday.

* IMPACTS...Hot temperatures and high humidity will combine to 
  create a dangerous situation in which heat illnesses are 
  possible. Overnight low temperatures will remain warm, 
  especially across urban areas, providing little to no heat 
  stress relief.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 light weight and loose fitting clothing when
possible and drink plenty of water. 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 911.

&&

$$

OKZ049-053-221000-
/O.CON.KTSA.EH.W.0021.230822T1600Z-230823T0100Z/
/O.CON.KTSA.EH.W.0022.230823T1600Z-230824T0100Z/
Pushmataha-Choctaw-
Including the cities of Antlers, Clayton, and Hugo
854 PM CDT Mon Aug 21 2023

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT TUESDAY...
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT WEDNESDAY...

* WHAT...Dangerously hot conditions with heat index values of 
  110 to 120 degrees. Warm overnight low temperatures around 80 
  degrees within urban areas.

* WHERE...Pushmataha and Choctaw Counties.

* WHEN...For the first Excessive Heat Warning, from 11 AM to 8 
  PM CDT Tuesday. For the second Excessive Heat Warning, from 11 
  AM to 8 PM CDT Wednesday.

* IMPACTS...Hot temperatures and high humidity will combine to 
  create a dangerous situation in which heat illnesses are 
  possible. Overnight low temperatures will remain warm, 
  especially across urban areas, providing little to no heat 
  stress relief.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 light weight and loose fitting clothing when
possible and drink plenty of water. 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 911.

&&

$$

Stay tuned to NOAA weather radio,commercial radio or television
for the latest information,forecasts,and warnings.
For more information from the National Weather Service visit
https://weather.gov/tsa
065 
WWUS74 KTSA 220650
NPWTSA

URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
150 AM CDT Tue Aug 22 2023

ARZ001-002-010-011-019-020-029-OKZ049-053>076-221800-
/O.CON.KTSA.EH.W.0021.230822T1600Z-230823T0100Z/
/O.CON.KTSA.EH.W.0022.230823T1600Z-230824T0100Z/
Benton-Carroll-Washington AR-Madison-Crawford-Franklin-Sebastian-
Pushmataha-Choctaw-Osage-Washington OK-Nowata-Craig-Ottawa-Pawnee-
Tulsa-Rogers-Mayes-Delaware-Creek-Okfuskee-Okmulgee-Wagoner-
Cherokee-Adair-Muskogee-McIntosh-Sequoyah-Pittsburg-Haskell-
Latimer-Le Flore-
Including the cities of Rogers, Bentonville, Berryville, 
Eureka Springs, Fayetteville, Springdale, Huntsville, Van Buren, 
Ozark, Charleston, Fort Smith, Antlers, Clayton, Hugo, Pawhuska, 
Bartlesville, Nowata, Vinita, Miami, Pawnee, Tulsa, Claremore, 
Pryor, Grove, Jay, Sapulpa, Okemah, Okmulgee, Wagoner, Tahlequah,
Stilwell, Muskogee, Checotah, Sallisaw, McAlester, Stigler, 
Wilburton, and Poteau
150 AM CDT Tue Aug 22 2023

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS
MORNING TO 8 PM CDT THIS EVENING...
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT WEDNESDAY...

* WHAT...Dangerously hot conditions with heat index values of 
  110 to 120 degrees. Warm overnight low temperatures around 80 
  degrees within urban areas.

* WHERE...Portions of northwest and west central Arkansas and 
  east central, northeast and southeast Oklahoma.

* WHEN...For the first Excessive Heat Warning, until 9 PM CDT 
  this evening. For the second Excessive Heat Warning, from 11 
  AM to 8 PM CDT Tuesday. For the third Excessive Heat Warning, 
  from 11 AM to 8 PM CDT Wednesday.

* IMPACTS...Hot temperatures and high humidity will combine to 
  create a dangerous situation in which heat illnesses are 
  possible. Overnight low temperatures will remain warm, 
  especially across urban areas, providing little to no heat 
  stress relief.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 light weight and loose fitting clothing when
possible and drink plenty of water. 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 911.

&&

$$

Stay tuned to NOAA weather radio,commercial radio or television
for the latest information,forecasts,and warnings.
For more information from the National Weather Service visit
https://weather.gov/tsa
204 
WWUS74 KTSA 221742
NPWTSA

URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
1242 PM CDT Tue Aug 22 2023

ARZ001-002-010-011-019-020-029-OKZ049-053>076-230900-
/O.CON.KTSA.EH.W.0021.000000T0000Z-230823T0100Z/
/O.CON.KTSA.EH.W.0022.230823T1600Z-230824T0100Z/
Benton-Carroll-Washington AR-Madison-Crawford-Franklin-Sebastian-
Pushmataha-Choctaw-Osage-Washington OK-Nowata-Craig-Ottawa-Pawnee-
Tulsa-Rogers-Mayes-Delaware-Creek-Okfuskee-Okmulgee-Wagoner-
Cherokee-Adair-Muskogee-McIntosh-Sequoyah-Pittsburg-Haskell-
Latimer-Le Flore-
Including the cities of Rogers, Bentonville, Berryville, 
Eureka Springs, Fayetteville, Springdale, Huntsville, Van Buren, 
Ozark, Charleston, Fort Smith, Antlers, Clayton, Hugo, Pawhuska, 
Bartlesville, Nowata, Vinita, Miami, Pawnee, Tulsa, Claremore, 
Pryor, Grove, Jay, Sapulpa, Okemah, Okmulgee, Wagoner, Tahlequah,
Stilwell, Muskogee, Checotah, Sallisaw, McAlester, Stigler, 
Wilburton, and Poteau
1242 PM CDT Tue Aug 22 2023

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS
EVENING...
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT WEDNESDAY...

* WHAT...Dangerously hot conditions with heat index values of 
  110 to 120 degrees. Warm overnight low temperatures around 80 
  degrees within urban areas.

* WHERE...Portions of northwest and west central Arkansas and 
  east central, northeast and southeast Oklahoma.

* WHEN...For the first Excessive Heat Warning, until 9 PM CDT 
  this evening. For the second Excessive Heat Warning, from 11 
  AM to 8 PM CDT Tuesday. For the third Excessive Heat Warning, 
  from 11 AM to 8 PM CDT Wednesday.

* IMPACTS...Hot temperatures and high humidity will combine to 
  create a dangerous situation in which heat illnesses are 
  possible. Overnight low temperatures will remain warm, 
  especially across urban areas, providing little to no heat 
  stress relief.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 light weight and loose fitting clothing when
possible and drink plenty of water. 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 911.

&&

$$

Stay tuned to NOAA weather radio,commercial radio or television
for the latest information,forecasts,and warnings.
For more information from the National Weather Service visit
https://weather.gov/tsa
576 
WWUS74 KTSA 221745
NPWTSA

URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
1245 PM CDT Tue Aug 22 2023

ARZ001-002-010-011-019-020-029-OKZ049-053>076-230900-
/O.CON.KTSA.EH.W.0021.000000T0000Z-230823T0100Z/
/O.CON.KTSA.EH.W.0022.230823T1600Z-230824T0100Z/
Benton-Carroll-Washington AR-Madison-Crawford-Franklin-Sebastian-
Pushmataha-Choctaw-Osage-Washington OK-Nowata-Craig-Ottawa-Pawnee-
Tulsa-Rogers-Mayes-Delaware-Creek-Okfuskee-Okmulgee-Wagoner-
Cherokee-Adair-Muskogee-McIntosh-Sequoyah-Pittsburg-Haskell-
Latimer-Le Flore-
Including the cities of Rogers, Bentonville, Berryville, 
Eureka Springs, Fayetteville, Springdale, Huntsville, Van Buren, 
Ozark, Charleston, Fort Smith, Antlers, Clayton, Hugo, Pawhuska, 
Bartlesville, Nowata, Vinita, Miami, Pawnee, Tulsa, Claremore, 
Pryor, Grove, Jay, Sapulpa, Okemah, Okmulgee, Wagoner, Tahlequah,
Stilwell, Muskogee, Checotah, Sallisaw, McAlester, Stigler, 
Wilburton, and Poteau
1245 PM CDT Tue Aug 22 2023

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS
EVENING...
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT WEDNESDAY...

* WHAT...Dangerously hot conditions with heat index values of 
  110 to 120 degrees. Warm overnight low temperatures around 80 
  degrees within urban areas.

* WHERE...Portions of northwest and west central Arkansas and 
  east central, northeast and southeast Oklahoma.

* WHEN...For the first Excessive Heat Warning, until 8 PM CDT 
  this evening. For the second Excessive Heat Warning, from 11 
  AM to 8 PM CDT Wednesday.

* IMPACTS...Hot temperatures and high humidity will combine to 
  create a dangerous situation in which heat illnesses are 
  possible. Overnight low temperatures will remain warm, 
  especially across urban areas, providing little to no heat 
  stress relief.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 light weight and loose fitting clothing when
possible and drink plenty of water. 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 911.

&&

$$

Stay tuned to NOAA weather radio,commercial radio or television
for the latest information,forecasts,and warnings.
For more information from the National Weather Service visit
https://weather.gov/tsa
788 
WWUS74 KTSA 230056
NPWTSA

URGENT - WEATHER MESSAGE
National Weather Service Tulsa OK
756 PM CDT Tue Aug 22 2023

ARZ001-002-010-011-019-020-029-OKZ049-053>076-231000-
/O.EXP.KTSA.EH.W.0021.000000T0000Z-230823T0100Z/
/O.CON.KTSA.EH.W.0022.230823T1600Z-230824T0100Z/
Benton-Carroll-Washington AR-Madison-Crawford-Franklin-Sebastian-
Pushmataha-Choctaw-Osage-Washington OK-Nowata-Craig-Ottawa-Pawnee-
Tulsa-Rogers-Mayes-Delaware-Creek-Okfuskee-Okmulgee-Wagoner-
Cherokee-Adair-Muskogee-McIntosh-Sequoyah-Pittsburg-Haskell-
Latimer-Le Flore-
Including the cities of Rogers, Bentonville, Berryville, 
Eureka Springs, Fayetteville, Springdale, Huntsville, Van Buren, 
Ozark, Charleston, Fort Smith, Antlers, Clayton, Hugo, Pawhuska, 
Bartlesville, Nowata, Vinita, Miami, Pawnee, Tulsa, Claremore, 
Pryor, Grove, Jay, Sapulpa, Okemah, Okmulgee, Wagoner, Tahlequah,
Stilwell, Muskogee, Checotah, Sallisaw, McAlester, Stigler, 
Wilburton, and Poteau
756 PM CDT Tue Aug 22 2023

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM
CDT WEDNESDAY...
...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM CDT THIS EVENING...

* WHAT...Dangerously hot conditions with heat index values of 
  110 to 120 degrees. Warm overnight low temperatures around 80 
  degrees within urban areas.

* WHERE...Portions of northwest and west central Arkansas and 
  east central, northeast and southeast Oklahoma.

* WHEN...For the first Excessive Heat Warning, until 8 PM CDT 
  this evening. For the second Excessive Heat Warning, from 11 
  AM to 8 PM CDT Wednesday.

* IMPACTS...Hot temperatures and high humidity will combine to 
  create a dangerous situation in which heat illnesses are 
  possible. Overnight low temperatures will remain warm, 
  especially across urban areas, providing little to no heat 
  stress relief.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 light weight and loose fitting clothing when
possible and drink plenty of water. 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 911.

&&

$$

Stay tuned to NOAA weather radio,commercial radio or television
for the latest information,forecasts,and warnings.
For more information from the National Weather Service visit
https://weather.gov/tsa

What forecasters said that day

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

NWS Tulsa, OK wrote its last area forecast discussion before this excessive heat warning went out at Aug 21, 2:19 AM CDT, 4 minutes earlier.

Area forecast discussion, Aug 21, 2:19 AM CDT, 4 minutes before
Area Forecast Discussion
National Weather Service Tulsa OK
219 AM CDT Mon Aug 21 2023

...New SHORT TERM, LONG TERM...

.SHORT TERM...
(Today)
Issued at 219 AM CDT Mon Aug 21 2023

It will be another hot day today across eastern Oklahoma and
western Arkansas, with an Excessive Heat Warning in place across
all of our forecast areas this afternoon. The expansive area of
high pressure responsible for this heat wave will shift a little
north of the local area today. This will allow for a more easterly
to northeasterly wind today, with what little wind there is. In
response, high temperatures should be a couple degrees cooler
ranging from the upper 90s to around 103 for most places.
Unfortunately, high dewpoints will also remain in place,
especially across northeast Oklahoma where 80 degree dewpoints
have been common over the last several days. This means another
day of heat index values ranging from around 110 to 120 degrees
again this afternoon. Continue to take your heat related
precautions as the accumulative effects of the heat can more
easily take its toll after several days of intense heat.

Bowlan

&&

.LONG TERM...
(Tonight through Sunday)
Issued at 219 AM CDT Mon Aug 21 2023

The long range forecast remains largely unchanged as we remain
under the influence of ridging aloft close by the forecast area
through the rest of the work week. Additional heat headlines will
be needed through the week. Guidance does continue to indicate
that some relief could be on the way during the weekend as the
ridge weakens some and finally shifts back west of the region,
and stronger northwesterly flow aloft can spread over eastern
Oklahoma. this would allow a cold front to slip into the region
and bring some cooler temperatures and possibly some scattered
rain chances. Differences remain in the degree of the cooldown as
well as the coverage of rain chances over the region late in the
weekend, so will leave the forecast dry for now.

&&

.AVIATION...
(06Z TAFS)
Issued at 1206 AM CDT Mon Aug 21 2023

Some patchy light fog will be possible across northwest Arkansas late
tonight, primarily at KFYV. Otherwise, VFR conditions are expected
through the TAF period.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL  103  80 101  79 /   0   0   0   0
FSM  104  79 102  79 /   0   0   0   0
MLC  103  77 102  75 /   0   0   0   0
BVO  103  75 101  74 /   0   0   0   0
FYV  101  75  99  74 /   0   0   0   0
BYV  100  75  99  74 /   0   0   0   0
MKO  101  77  99  76 /   0   0   0   0
MIO  101  76  99  76 /   0   0   0   0
F10  100  77  98  74 /   0   0   0   0
HHW  102  76 101  75 /   0   0   0   0

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...Excessive Heat Warning from 11 AM this morning to 8 PM CDT this
     evening for OKZ049-053>076.

     Excessive Heat Warning from 11 AM to 8 PM CDT Tuesday for OKZ049-
     053>076.

AR...Excessive Heat Warning from 11 AM this morning to 8 PM CDT this
     evening for ARZ001-002-010-011-019-020-029.

     Excessive Heat Warning from 11 AM to 8 PM CDT Tuesday for ARZ001-
     002-010-011-019-020-029.

&&

SHORT TERM...04
LONG TERM....04
AVIATION...12
Hazardous weather outlook, Aug 20, 9:13 PM CDT, 5 hours 10 minutes before
Hazardous Weather Outlook
National Weather Service Tulsa OK
913 PM CDT Sun Aug 20 2023

ARZ001-002-010-011-019-020-029-OKZ049-053>076-211015-
Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK-
Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK-
Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK-
Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK-
Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK-
Washington OK-Washington AR-
913 PM CDT Sun Aug 20 2023

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...Tonight.

DISCUSSION...
Heat index values will continue to cool into the overnight hours
with low temperatures in the 70s forecast.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Spotter Activation Not Expected.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.
MONDAY THROUGH SATURDAY...Dangerous Heat Potential.

EXTENDED DISCUSSION...
The prolonged heat wave will continue through the work week ahead.
Expect multiple days of excessive heat warnings and heat
advisories. A break from the heat may arrive next weekend.

weather.gov/tulsa contains additional information.

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 21, 12:50 PM CDTExcessive Heat WarningTSAAdair, Cherokee, Choctaw, Craig, Creek, Delaware and 16 more55 hr

Nearby

Excessive Heat Warnings in Oklahoma, 2023Excessive Heat Warnings in Arkansas, 2023Every excessive heat warning in 2023

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.