377
WWUS74 KJAN 171800
NPWJAN

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
100 PM CDT Mon Aug 17 2026

ARZ075-LAZ008-009-016-025-026-MSZ018-019-025>066-072>074-180200-
/O.NEW.KJAN.HT.Y.0020.260818T1600Z-260819T0100Z/
/O.CON.KJAN.XH.W.0007.000000T0000Z-260818T0100Z/
Chicot-West Carroll-East Carroll-Madison LA-Tensas-Concordia-
Bolivar-Sunflower-Leflore-Grenada-Carroll-Montgomery-Webster-Clay-
Lowndes-Choctaw-Oktibbeha-Washington-Humphreys-Holmes-Attala-Winston-
Noxubee-Issaquena-Sharkey-Yazoo-Madison MS-Leake-Neshoba-Kemper-
Warren-Hinds-Rankin-Scott-Newton-Lauderdale-Claiborne-Copiah-Simpson-
Smith-Jasper-Clarke-Jefferson-Adams-Franklin MS-Lincoln-Lawrence-
Jefferson Davis-Covington-Jones-Marion-Lamar-Forrest-
Including the cities of Fayette, Decatur, Morton, Newellton, North
Carrollton, Cleveland, De Kalb, Wesson, Meadville, Bassfield, Vaiden,
Macon, Anguilla, Ferriday, Jackson, Mendenhall, Shubuta, New Hebron,
Purvis, Starkville, Tallulah, Madison, Heidelberg, Crystal Springs,
Lexington, Epps, Stonewall, Weir, Pearl, West Ferriday, Louisville,
Carthage, Monticello, Forest, Brandon, Rolling Fork, Belzoni, Winona,
Canton, Philadelphia, Quitman, Ridgeland, Pearl River, Greenwood,
Ackerman, Hazlehurst, Carrollton, Bude, Lake Providence, Lumberton,
Roxie, Newton, Tchula, Indianola, Conehatta, Greenville, Mount Olive,
Dermott, Goodman, West Hattiesburg, Kosciusko, Columbia, Ruleville,
Isola, Lake Village, Prentiss, Eudora, Richland, Brooksville,
Grenada, Mathiston, Mayersville, Union, Oak Grove, Laurel,
Hattiesburg, Columbus, Magee, Taylorsville, West Point, Pickens,
Durant, Natchez, Raleigh,
Waterproof, Brookhaven, Vicksburg, St. Joseph, Bay Springs, Yazoo
City, Vidalia, Meridian, Collins, Eupora, Port Gibson, and Scooba
100 PM CDT Mon Aug 17 2026

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

* WHAT...Dangerously hot conditions with heat index values in excess
  of 110 degrees and peaking around 115 degrees.

* WHERE...Portions of west, central, north and south Mississippi,
  southeast Arkansas, and northeast Louisiana.

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

* 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.

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.

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.

Monitor the latest forecasts and warnings for updates.

&&

$$

ARZ074-LAZ007-015-023-024-180200-
/O.NEW.KJAN.HT.Y.0020.260818T1600Z-260819T0100Z/
/O.CON.KJAN.HT.Y.0019.000000T0000Z-260818T0100Z/
Ashley-Morehouse-Richland-Franklin LA-Catahoula-
Including the cities of Rayville, Harrisonburg, Bastrop, North
Crossett, Hamburg, Crossett, Jonesville, West Crossett, Winnsboro,
and Delhi
100 PM CDT Mon Aug 17 2026

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

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

* WHERE...Portions of southeast Arkansas and northeast Louisiana.

* WHEN...Until 8 PM CDT this evening. And again from 11 AM to 8 PM
  CDT Tuesday.

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

* ADDITIONAL DETAILS...Temperatures at night will not bring much
  relief as they struggle to fall below 80 in some cases. The threat
  for dangerous heat will continue into next week.

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.

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.


&&

$$

KP