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Excessive Heat Warning — St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Issued
11:00 AM CDT · Wed, Jul 29 2026
Expires
8:00 PM CDT · Wed, Jul 29 2026
Issuing Office
NWS KLIX

Affected Areas

St. James, LA St. John The Baptist, LA Upper St. Bernard, LA Lower St. Bernard, LA Southeast St. Tammany, LA Western Orleans, LA Eastern Orleans, LA Northern St. Tammany, LA Southwestern St. Tammany, LA Central Tangipahoa, LA Lower Tangipahoa, LA Northern Livingston, LA Southern Livingston, LA Western Ascension, LA Eastern Ascension, LA Upper Jefferson, LA Upper Plaquemines, LA Upper St. Charles, LA Central St. Charles, LA Lower St. Charles, LA Southern Hancock, MS Southern Harrison, MS Southern Jackson, MS

Official Bulletin

468
WWUS74 KLIX 281845
NPWLIX

URGENT - WEATHER MESSAGE
National Weather Service New Orleans LA
145 PM CDT Tue Jul 28 2026

LAZ057-058-064-070-076>087-089-098>100-MSZ086>088-290845-
/O.NEW.KLIX.XH.W.0003.260729T1600Z-260730T0100Z/
/O.CON.KLIX.XH.W.0002.000000T0000Z-260729T0100Z/
St. James-St. John The Baptist-Upper St. Bernard-Lower St.
Bernard-Southeast St. Tammany-Western Orleans-Eastern Orleans-
Northern St. Tammany-Southwestern St. Tammany-Central Tangipahoa-
Lower Tangipahoa-Northern Livingston-Southern Livingston-Western
Ascension-Eastern Ascension-Upper Jefferson-Upper Plaquemines-
Upper St. Charles-Central St. Charles-Lower St. Charles-Southern
Hancock-Southern Harrison-Southern Jackson-
Including the cities of Gautier, Belle Chasse, Pearlington, Bush,
Bonnet Carre Spillway, Robert, Metairie, Kenner, Gulfport, Biloxi,
Ocean Springs, Ponchatoula, Livingston, Killian, Akers,
Geismar, French Settlement, Yscloskey, Covington, St. Martin,
East New Orleans, Long Beach, Sorrento, Convent, Prairieville, Shell
Beach, Whitehall, Harahan, Gonzales, Meraux, Springfield, Hahnville,
Mandeville, Walker, Folsom, Pass Christian, Luling, Gramercy, Gretna,
Lutcher, Norco, Tickfaw, Kiln, Donaldsonville, Delacroix, Moss Point,
Chalmette, Denham Springs, Pascagoula,
Marrero, Independence, Madisonville, Westwego, Slidell, Bay St.
Louis, Diamondhead, Acy, New Orleans, Laplace, Reserve, Destrehan,
Violet, Montz, Boutte, Waveland, and Hammond
145 PM CDT Tue Jul 28 2026

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

* WHAT...For the first Extreme Heat Warning, dangerously hot
  conditions with heat index values up to 115. For the second Extreme
  Heat Warning, dangerously hot conditions with heat index values up
  to 115 expected.

* WHERE...Portions of southeast Louisiana and southern Mississippi.

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

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

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.

&&

$$

LAZ090-092-290845-
/O.NEW.KLIX.HT.Y.0015.260729T1600Z-260730T0100Z/
/O.CON.KLIX.XH.W.0002.000000T0000Z-260729T0100Z/
Central Plaquemines-Central Jefferson-
Including the cities of Jean Lafitte, Barataria, Braithwaite,
Alliance, and Lafitte
145 PM CDT Tue Jul 28 2026

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

* WHAT...For the Extreme Heat Warning, dangerously hot conditions
  with heat index values up to 115. For the Heat Advisory, heat index
  values up to 110 expected.

* WHERE...Central Jefferson and Central Plaquemines Parishes.

* WHEN...For the Extreme Heat Warning, until 8 PM CDT this evening.
  For the Heat Advisory, from 11 AM to 8 PM CDT Wednesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events. 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.

&&

$$

LAZ034>037-039-046>048-056-071-091-093>097-MSZ068>071-077-083>085-290845-
/O.NEW.KLIX.HT.Y.0015.260729T1600Z-260730T0100Z/
/O.CON.KLIX.HT.Y.0014.000000T0000Z-260729T0100Z/
Pointe Coupee-West Feliciana-East Feliciana-St. Helena-Washington-
Iberville-West Baton Rouge-East Baton Rouge-Assumption-Northern
Tangipahoa-Lower Plaquemines-Coastal Jefferson-Upper Lafourche-
Lower Lafourche-Upper Terrebonne-Lower Terrebonne-Wilkinson-Amite-
Pike-Walthall-Pearl River-Northern Hancock-Northern Harrison-
Northern Jackson-
Including the cities of McNeil, White Castle, Smithdale, Bayou
Cane, St. Francisville, Dolorosa, Thibodaux, Woodville, Saucier,
Lockport, Darlington, Franklinton, Dexter, Livonia, Centreville,
Lyman, Bayou Sorrel, Pierre Part, Fort Adams, Sellers, Brusly,
Larose, Montegut, Gillsburg, Kentwood, Port Sulphur, Liberty,
Necaise, Labadieville, Bogalusa, Cocodrie, Escatawpa, Tylertown,
Easleyville, Galliano, Leeville, Lettsworth, Wakefield, Felps,
Montpelier, Port Allen, Addis, Baton Rouge, Picayune, Jackson, Salem,
Chauvin, Buras, Grand Isle, Raceland, Vancleave, Cut Off, Plaquemine,
Houma, Enon, Roseland, Spillman, Pointe A La Hache, McComb, New
Roads, Clinton, Dulac, Crossroads, Wade, Greensburg, Wilmer,
Paincourtville, Poplarville, Gloster, Amite, and Golden Meadow
145 PM CDT Tue Jul 28 2026

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

* WHAT...For the first Heat Advisory, heat index values up to 110.
  For the second Heat Advisory, heat index values up to 112 expected.

* WHERE...Portions of southeast Louisiana and southern 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 Wednesday.

* 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.

&&

$$

Zeringue