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Heat Advisory


URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
1258 PM CDT Fri Aug 21 2026

ARZ074-075-MSZ018-019-025-034>036-220200-
/O.NEW.KJAN.HT.Y.0024.260822T1600Z-260823T0100Z/
/O.CON.KJAN.HT.Y.0023.000000T0000Z-260822T0100Z/
Ashley-Chicot-Bolivar-Sunflower-Leflore-Washington-Humphreys-Holmes-
Including the cities of Durant, Crossett, Goodman, Belzoni,
Greenwood, Tchula, Lexington, Ruleville, West Crossett, Dermott,
Eudora, Cleveland, Indianola, Isola, Greenville, North Crossett,
Pickens, Hamburg, and Lake Village
1258 PM CDT Fri Aug 21 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM CDT SATURDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...

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

* WHERE...Portions of southeast Arkansas and central Mississippi.

* WHEN...For the first Heat Advisory, until 8 PM CDT this evening.
  For the second Heat Advisory, from 11 AM to 8 PM CDT Saturday.

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

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.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
1258 PM CDT Fri Aug 21 2026

MSZ026>033-037>039-044>046-050>052-056>058-065-066-073-074-220100-
/O.CON.KJAN.HT.Y.0023.000000T0000Z-260822T0100Z/
Grenada-Carroll-Montgomery-Webster-Clay-Lowndes-Choctaw-Oktibbeha-
Attala-Winston-Noxubee-Leake-Neshoba-Kemper-Scott-Newton-Lauderdale-
Smith-Jasper-Clarke-Covington-Jones-Lamar-Forrest-
Including the cities of North Carrollton, Laurel, Winona, Morton,
West Hattiesburg, Eupora, Columbus, Collins, Shubuta, Mathiston, Bay
Springs, Union, Brooksville, Quitman, De Kalb, Starkville, Raleigh,
Newton, Pearl River, Meridian, Grenada, West Point, Macon, Weir,
Conehatta, Taylorsville, Mount Olive, Ackerman, Lumberton,
Carrollton, Forest, Stonewall, Carthage, Heidelberg, Vaiden, Purvis,
Scooba, Louisville, Hattiesburg, Kosciusko, Philadelphia, and Decatur
1258 PM CDT Fri Aug 21 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...

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

* WHERE...Portions of central and eastern Mississippi.

* WHEN...Until 8 PM CDT this evening.

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

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.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

&&

$$

EC

URGENT - WEATHER MESSAGE
National Weather Service Little Rock AR
1221 PM CDT Fri Aug 21 2026

ARZ031-032-039-042>047-054>057-121-122-130-137-138-140-141-230-237-
238-240-241-340-341-220100-
/O.CON.KLZK.HT.Y.0024.000000T0000Z-260822T0100Z/
Conway-Faulkner-Perry-Garland-Saline-Pulaski-Lonoke-Prairie-Monroe-
Hot Spring-Grant-Jefferson-Arkansas-Southern Johnson County-
Southern Pope County-Western and Northern Logan County-
Northern Scott County-Northwest Yell County-
Polk County Lower Elevations-Central and Eastern Montgomery County-
Southern and Eastern Logan County-Central and Southern Scott County-
Yell Excluding Northwest-Northern Polk County Higher Elevations-
Northern Montgomery County Higher Elevations-
Southeast Polk County Higher Elevations-
Southwest Montgomery County Higher Elevations-
Including the cities of Ola, Mena, Atkins, Bryant, Plainview, Hector,
Morrilton, Mansfield, Nunley, Y City, Mount Magazine, Acorn, Big
Fork, Malvern, Clarksville, Conway, Lonoke, Brinkley, Cabot,
Booneville, London, Waveland, Grannis, Hartman, Coal Hill, Benton,
Mount Ida, Little Rock, Clarendon, Caulksville, Havana, Dardanelle,
Paris, Waldron, Stuttgart, Story, Knoxville, Blue Mountain, North
Little Rock, Hatfield, Perryville, Mountain Fork, Sheridan, Sugar
Grove, Hot Springs, Danville, Des Arc, Boles, Albert, Hazen, Pine
Bluff, De Witt, Rich Mountain, De Valls Bluff, Russellville, Hartley,
Subiaco, and Norman
1221 PM CDT Fri Aug 21 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...

* WHAT...Heat index values up to 107.

* WHERE...Portions of central, eastern, southeast, southwest, and
  western Arkansas.

* WHEN...Until 8 PM CDT this evening.

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

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

JG

URGENT - WEATHER MESSAGE
National Weather Service Little Rock AR
1221 PM CDT Fri Aug 21 2026

ARZ052-053-062>069-220100-
/O.NEW.KLZK.HT.Y.0025.260822T1600Z-260823T0100Z/
/O.CON.KLZK.HT.Y.0024.000000T0000Z-260822T0100Z/
Pike-Clark-Dallas-Cleveland-Lincoln-Desha-Ouachita-Calhoun-Bradley-
Drew-
Including the cities of Gould, Murfreesboro, Monticello, Hampton,
McGehee, Glenwood, Warren, Fordyce, Kingsland, Dumas, Rison,
Arkadelphia, Camden, Thornton, and Star City
1221 PM CDT Fri Aug 21 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM CDT SATURDAY...
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...

* WHAT...For Friday, heat index values up to 108 expected. For
  Saturday, heat index values up to 106 expected.

* WHERE...Bradley, Cleveland, Desha, Drew, Lincoln, Calhoun, Clark,
  Dallas, Ouachita, and Pike Counties.

* WHEN...For Friday until 8 PM CDT this evening. For Saturday from 11
  AM to 8 PM CDT

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

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Memphis TN
1118 AM CDT Fri Aug 21 2026

ARZ049-058-MSZ007-010-011-020>024-220100-
/O.CON.KMEG.HT.Y.0024.000000T0000Z-260822T0100Z/
Lee AR-Phillips-Tunica-Coahoma-Quitman-Tallahatchie-Yalobusha-
Calhoun-Chickasaw-Monroe-
Including the cities of Water Valley, Coffeeville, Helena-West
Helena, Tunica, Okolona, Aberdeen, Charleston, Marks, Amory,
Clarksdale, Calhoun City, Houston, Bruce, and Marianna
1118 AM CDT Fri Aug 21 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING...

* WHAT...Heat index values up to 108.

* WHERE...In Arkansas, Lee AR and Phillips Counties. In Mississippi,
  Calhoun, Chickasaw, Coahoma, Monroe, Quitman, Tallahatchie, Tunica,
  and Yalobusha Counties.

* WHEN...Until 8 PM CDT this evening.

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

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.

&&

$$

DNM

URGENT - WEATHER MESSAGE
National Weather Service Birmingham AL
933 AM CDT Fri Aug 21 2026

ALZ011>013-015-024-025-220200-
/O.CON.KBMX.HT.Y.0011.000000T0000Z-260822T0200Z/
Marion-Lamar-Fayette-Walker-Jefferson-Shelby-
Including the cities of Fayette, Columbiana, Hoover, Pelham, Jasper,
Sulligent, Hamilton, Birmingham, Alabaster, and Vernon
933 AM CDT Fri Aug 21 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING...

* WHAT...Heat index values up to 106.

* WHERE...Fayette, Jefferson, Lamar, Marion, Shelby, and Walker
  Counties.

* WHEN...Until 9 PM CDT this evening.

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

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
stoke. 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 9 1 1.

&&

$$

URGENT - WEATHER MESSAGE
National Weather Service Birmingham AL
933 AM CDT Fri Aug 21 2026

ALZ022-023-026-030>035-039>046-048>050-220200-
/O.CON.KBMX.HT.Y.0009.000000T0000Z-260822T0200Z/
Pickens-Tuscaloosa-St. Clair-Sumter-Greene-Hale-Perry-Bibb-
Chilton-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon-
Bullock-Russell-Pike-Barbour-
Including the cities of Union Springs, Troy, Phenix City, Demopolis,
Eufaula, Hayneville, Eutaw, Carrollton, Centreville, Moundville,
Greensboro, Wetumpka, Tuskegee, Prattville, Tallassee, Moody, Pell
City, Linden, Clanton, Fort Deposit, Selma, Montgomery, Marion,
Livingston, and Tuscaloosa
933 AM CDT Fri Aug 21 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING...

* WHAT...Heat index values up to 106.

* WHERE...Autauga, Barbour, Bibb, Bullock, Chilton, Dallas, Elmore,
  Greene, Hale, Lowndes, Macon, Marengo, Montgomery, Perry, Pickens,
  Pike, Russell, St. Clair, Sumter, and Tuscaloosa Counties.

* WHEN...Until 9 PM CDT this evening.

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

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
stoke. 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 9 1 1.

&&

$$

56


Air Quality Alert


ARZ036-MSZ001-TNZ088-220130-

Air Quality Alert Message
Shelby County Health Department
Relayed by National Weather Service Memphis TN
229 PM CDT Fri Aug 21 2026

...CODE ORANGE OZONE HEALTH ADVISORY IN EFFECT UNTIL SUNSET...

The Shelby County Health Department has issued a Code Orange Ozone
Health Advisory effective for Shelby County Tennessee, Crittenden
County Arkansas, and DeSoto County Mississippi, including the city
of Memphis that will remain in effect until sunset. This ozone health
advisory is due to monitored ozone values that are unhealthy for
sensitive groups. These values have exceeded the Environmental
Protection Agency`s federal safe health standard. The Shelby County
Health Department recommends that sensitive groups which include
active children and adults, and people with respiratory disease,
such as asthma, limit prolonged outdoor exertion.

The Shelby County Health Department has issued a Code Orange Ozone
Forecast effective for Shelby County Tennessee, Crittenden County
Arkansas, and DeSoto County Mississippi, including the city of
Memphis for Saturday. This ozone forecast is due to forecasted ozone
values that will be unhealthy for sensitive groups. These values will
exceed the Environmental Protection Agency`s federal safe health
standard. The Shelby County Health Department recommends that
sensitive groups which include active children and adults, and
people with respiratory disease, such as asthma, limit prolonged
outdoor exertion.

Please continue to check the latest air quality forecasts and updates
until monitored values return to safe levels. For more information go
to www.airnow.gov.

$$


Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Springfield MO
143 PM CDT Fri Aug 21 2026

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-221845-
Bourbon-Crawford-Cherokee-Benton-Morgan-Miller-Maries-Vernon-
St. Clair-Hickory-Camden-Pulaski-Phelps-Barton-Cedar-Polk-Dallas-
Laclede-Texas-Dent-Jasper-Dade-Greene-Webster-Wright-Newton-
Lawrence-Christian-Douglas-Howell-Shannon-McDonald-Barry-Stone-
Taney-Ozark-Oregon-
143 PM CDT Fri Aug 21 2026

This Hazardous Weather Outlook is for portions of the Missouri
Ozarks and extreme southeast Kansas.

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Marginal thunderstorm wind damage risk.
  Limited lightning risk.
  Limited extreme heat risk.

DISCUSSION...

Heat indicies this afternoon will reach the upper 90s to around
100 this afternoon and evening west of Springfield.

Showers and thunderstorms will approach southeast Kansas after 5am
Saturday. Lightning and gusty winds will occur in the stronger
storms as they move in. Most locations across southwest Missouri
will remain dry.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Showers and thunderstorms will move through southeast Kansas and
southwest Missouri Saturday morning. Frequent lightning and
damaging wind gusts to 60 mph could occur in a few storms west of
Springfield however the overall severe threat remains very low.

Heat indicies in the 90s to around 100 will be common at times
this weekend into next week with the highest values west of
Springfield.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

&&

More detailed information can be accessed at:
http://www.weather.gov/sgf/dsspacket

This product in graphical format...along with other weather...
hydrological and climate information...at
http://www.weather.gov/sgf

$$

Burchfield

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE