Alert archive / Mississippi / Heat Advisories in 2024

Heat Advisory 21, NWS Jackson, MS

July 28, 202447 counties in Mississippi; 9 parishes in Louisiana; Ashley County, Chicot County, Arkansas

NWS Jackson, MS issued this heat advisory at Jul 28, 2024, 1:18 PM CDT for 47 counties in Mississippi; 9 parishes in Louisiana; Ashley County, Chicot County, Arkansas. It took effect at Jul 29, 2024, 10:00 AM CDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Jul 28, 2024, 1:18 PM CDT (18:18 UTC)
In effect from
Jul 29, 2024, 10:00 AM CDT
Expired
Jul 29, 2024, 7:00 PM CDT
In force
9 hr
Issued by
NWS Jackson, MS
All 58 counties

Ashley County, AR, Chicot County, AR, Catahoula Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Adams County, MS, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Claiborne County, MS, Clarke County, MS, Clay County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Leflore County, MS, Lincoln County, MS, Lowndes County, MS, Madison County, MS, Marion County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 32 km from the middle of the area, began a volume at 18:19 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

Jackson, MS (KJAN), launched 12:00Z, 6.3 hours before the alert went out and 24 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, Jackson, MS at 12:00Z on 2024-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 988 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, Jackson, MS at 12:00Z on 2024-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.193958Sfc1 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
988 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
903 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

As transmitted.

054 
WWUS74 KJAN 281818
NPWJAN

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
118 PM CDT Sun Jul 28 2024

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
290415-
/O.NEW.KJAN.HT.Y.0021.240729T1500Z-240730T0000Z/
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-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 Epps, Stonewall, Brookhaven, Carrollton,
Lexington, Newton, Starkville, Decatur, Vidalia, Greenwood, Bude,
Lake Village, Rayville, Rolling Fork, Lake Providence, New
Hebron, Pearl River, Anguilla, Jonesville, Roxie, West Ferriday,
Ruleville, Grenada, West Crossett, Bay Springs, Collins, Bastrop,
Brandon, St. Joseph, Fayette, North Crossett, Carthage,
Louisville, Waterproof, Lumberton, West Hattiesburg, West Point,
Meadville, Hamburg, Mount Olive, Bassfield, De Kalb, Eudora,
Shubuta, Brooksville, Yazoo City, Dermott, Columbus, Madison,
Taylorsville, Vicksburg, Goodman, Meridian, Crossett, Union,
North Carrollton, Tallulah, Tchula, Natchez, Newellton,
Winnsboro, Indianola, Philadelphia, Port Gibson, Cleveland, Weir,
Ackerman, Hazlehurst, Ferriday, Raleigh, Scooba, Laurel, Magee,
Jackson, Wesson, Greenville, Delhi, Ridgeland, Canton, Crystal
Springs, Mayersville, Richland, Hattiesburg, Eupora, Belzoni,
Pearl, Winona, Kosciusko, Forest, Morton, Columbia, Isola,
Monticello, Durant, Conehatta, Heidelberg, Macon, Mathiston,
Purvis, Harrisonburg, Mendenhall, Quitman, Oak Grove, Pickens,
Vaiden, and Prentiss
118 PM CDT Sun Jul 28 2024

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

* WHAT...Heat index values up to 105 to 110 expected.

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

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

* 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.

Monitor the latest forecasts and warnings for updates.

&&

$$

CR
6 follow-up statements
959 
WWUS74 KJAN 290219
NPWJAN

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
919 PM CDT Sun Jul 28 2024

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
291030-
/O.CON.KJAN.HT.Y.0021.240729T1500Z-240730T0000Z/
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-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 St. Joseph, Carthage, Ridgeland,
Kosciusko, West Hattiesburg, Pickens, Ferriday, Purvis, Prentiss,
Goodman, Pearl, Vaiden, Greenwood, Mount Olive, Columbia, Morton,
Oak Grove, Brooksville, Anguilla, Conehatta, Monticello,
Starkville, Durant, Jonesville, Winona, Newellton, West Point,
North Crossett, Lake Village, Jackson, Lumberton, Harrisonburg,
Hazlehurst, Yazoo City, Tchula, Winnsboro, Wesson, Lexington,
Eudora, Bay Springs, Ackerman, Weir, Stonewall, Taylorsville,
Hamburg, Bastrop, Rolling Fork, Mendenhall, Tallulah, North
Carrollton, Greenville, Grenada, Delhi, Carrollton, Rayville,
Scooba, Belzoni, Hattiesburg, Magee, West Crossett, Bassfield,
Louisville, Decatur, West Ferriday, Vidalia, New Hebron, Laurel,
Waterproof, Canton, Cleveland, Raleigh, Pearl River, Mathiston,
Roxie, Epps, Fayette, Lake Providence, Natchez, De Kalb,
Heidelberg, Crystal Springs, Mayersville, Bude, Macon, Columbus,
Forest, Newton, Dermott, Union, Madison, Indianola, Eupora,
Philadelphia, Richland, Ruleville, Shubuta, Crossett, Quitman,
Meridian, Port Gibson, Brandon, Isola, Collins, Brookhaven,
Vicksburg, and Meadville
919 PM CDT Sun Jul 28 2024

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

* WHAT...Heat index values up of 105-110F expected.

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

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

* 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.

Monitor the latest forecasts and warnings for updates.

&&

$$

OAJ
110 
WWUS74 KJAN 290739
NPWJAN

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
239 AM CDT Mon Jul 29 2024

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
291545-
/O.CON.KJAN.HT.Y.0021.240729T1500Z-240730T0000Z/
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-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 Heidelberg, Union, Indianola, Hazlehurst,
Winnsboro, Madison, Natchez, Wesson, Prentiss, Stonewall, Vaiden,
Starkville, West Hattiesburg, Scooba, Purvis, Quitman, Goodman,
Taylorsville, Forest, Isola, Mendenhall, Brandon, Raleigh, North
Carrollton, Philadelphia, Kosciusko, Anguilla, Brookhaven,
Canton, Newellton, Port Gibson, Fayette, Rayville, Ackerman, West
Point, Decatur, St. Joseph, Lumberton, Greenville, Bassfield,
Durant, Pearl, Tchula, Bastrop, Rolling Fork, Laurel, Weir,
Louisville, Lake Providence, Mathiston, Conehatta, Eupora,
Vicksburg, Bude, West Crossett, Epps, Jackson, Crossett, Oak
Grove, Morton, Columbus, Ridgeland, Monticello, Shubuta, Delhi,
Harrisonburg, Waterproof, Dermott, Bay Springs, North Crossett,
Mount Olive, Newton, Hattiesburg, West Ferriday, Hamburg,
Columbia, Meadville, Meridian, Ferriday, Yazoo City, Pearl River,
Brooksville, Mayersville, Vidalia, Lake Village, Grenada,
Lexington, Pickens, Ruleville, Magee, Roxie, Belzoni, Winona,
Eudora, Crystal Springs, Collins, Richland, Carthage, Greenwood,
Macon, De Kalb, Carrollton, Jonesville, Cleveland, Tallulah, and
New Hebron
239 AM CDT Mon Jul 29 2024

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

* WHAT...Heat index values up of 105 to 110 expected.

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

* WHEN...From 10 AM this morning to 7 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.

&&

$$

EC
785 
WWUS74 KJAN 291515
NPWJAN

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
1015 AM CDT Mon Jul 29 2024

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
292315-
/O.CON.KJAN.HT.Y.0021.000000T0000Z-240730T0000Z/
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-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 Brooksville, Bay Springs, Laurel, Oak
Grove, Pickens, Madison, Canton, Bude, Mount Olive, Kosciusko,
Ruleville, Richland, Crystal Springs, Hazlehurst, Shubuta,
Vaiden, Isola, Philadelphia, Epps, Tchula, Bassfield, Grenada,
Mayersville, Jackson, West Crossett, Ferriday, Goodman, Winona,
Hamburg, Brookhaven, Pearl River, Greenville, West Point,
Collins, Vicksburg, Forest, Eupora, Union, Natchez, Wesson,
Roxie, Eudora, Anguilla, Carrollton, North Crossett, Yazoo City,
Lake Providence, West Ferriday, Tallulah, Dermott, Bastrop,
Pearl, St. Joseph, Harrisonburg, Indianola, Weir, Hattiesburg,
Winnsboro, De Kalb, Louisville, Waterproof, Jonesville, Durant,
Newton, Prentiss, Ridgeland, Newellton, Mendenhall, Mathiston,
Columbus, Quitman, Crossett, North Carrollton, Brandon, Purvis,
Cleveland, Greenwood, Starkville, Lexington, Carthage, Magee,
Rolling Fork, Monticello, Vidalia, Conehatta, Belzoni, Delhi,
Heidelberg, Meridian, Fayette, Columbia, Stonewall, Raleigh,
Macon, Rayville, West Hattiesburg, Ackerman, Lake Village,
Scooba, Lumberton, Taylorsville, Port Gibson, Meadville, New
Hebron, Morton, and Decatur
1015 AM CDT Mon Jul 29 2024

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

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

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

* WHEN...Until 7 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.

Monitor the latest forecasts and warnings for updates.

&&

$$

AJ
036 
WWUS74 KJAN 291825
NPWJAN

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
125 PM CDT Mon Jul 29 2024

ARZ074-LAZ007-015-016-023>026-MSZ028>033-037>039-042>066-072>074-
300230-
/O.NEW.KJAN.HT.Y.0022.240730T1500Z-240731T0000Z/
/O.CON.KJAN.HT.Y.0021.000000T0000Z-240730T0000Z/
Ashley-Morehouse-Richland-Madison LA-Franklin LA-Catahoula-Tensas-
Concordia-Montgomery-Webster-Clay-Lowndes-Choctaw-Oktibbeha-
Attala-Winston-Noxubee-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 Richland, Port Gibson, Bassfield, Union,
Forest, Hazlehurst, Vidalia, Jackson, Pearl River, Crossett,
Pearl, Harrisonburg, Louisville, Jonesville, Hattiesburg, Winona,
Stonewall, Newellton, Eupora, Meadville, Bastrop, West Point,
Heidelberg, Shubuta, Columbus, Philadelphia, De Kalb, Starkville,
Waterproof, Madison, North Crossett, Columbia, Taylorsville,
Wesson, Mendenhall, Mount Olive, Vicksburg, Hamburg, Scooba,
Collins, Ferriday, Ridgeland, Crystal Springs, West Ferriday, Bay
Springs, Newton, Brandon, Mathiston, Weir, Morton, Canton,
Lumberton, Ackerman, Raleigh, Laurel, New Hebron, Quitman,
Brookhaven, Macon, Magee, Prentiss, Winnsboro, Roxie, Carthage,
Delhi, West Hattiesburg, Kosciusko, Monticello, Meridian, Yazoo
City, St. Joseph, Purvis, Tallulah, Decatur, Fayette,
Brooksville, West Crossett, Bude, Conehatta, Natchez, and
Rayville
125 PM CDT Mon Jul 29 2024

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

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

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

* WHEN...For the first Heat Advisory, until 7 PM CDT this evening. 
  For the second Heat Advisory, from 10 AM to 7 PM CDT Tuesday.

* 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.

Monitor the latest forecasts and warnings for updates.

&&

$$

ARZ075-LAZ008-009-MSZ018-019-025>027-034>036-040-041-300000-
/O.CON.KJAN.HT.Y.0021.000000T0000Z-240730T0000Z/
Chicot-West Carroll-East Carroll-Bolivar-Sunflower-Leflore-
Grenada-Carroll-Washington-Humphreys-Holmes-Issaquena-Sharkey-
Including the cities of Pickens, Ruleville, North Carrollton,
Rolling Fork, Durant, Carrollton, Greenville, Mayersville,
Grenada, Dermott, Greenwood, Oak Grove, Belzoni, Cleveland,
Vaiden, Lexington, Anguilla, Lake Village, Lake Providence,
Eudora, Isola, Indianola, Goodman, Epps, and Tchula
125 PM CDT Mon Jul 29 2024

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

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

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

* WHEN...Until 7 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.

Monitor the latest forecasts and warnings for updates.

&&

$$

AJ
302 
WWUS74 KJAN 291833
NPWJAN

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
133 PM CDT Mon Jul 29 2024

ARZ075-LAZ008-009-MSZ018-019-025>027-034>036-040-041-300245-
/O.NEW.KJAN.EH.W.0008.240730T1500Z-240731T0000Z/
/O.CON.KJAN.HT.Y.0021.000000T0000Z-240730T0000Z/
Chicot-West Carroll-East Carroll-Bolivar-Sunflower-Leflore-
Grenada-Carroll-Washington-Humphreys-Holmes-Issaquena-Sharkey-
Including the cities of Pickens, Ruleville, North Carrollton,
Rolling Fork, Durant, Carrollton, Greenville, Mayersville,
Grenada, Dermott, Greenwood, Oak Grove, Belzoni, Cleveland,
Vaiden, Lexington, Anguilla, Lake Village, Lake Providence,
Eudora, Isola, Indianola, Goodman, Epps, and Tchula
133 PM CDT Mon Jul 29 2024

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM TO 7 PM CDT TUESDAY...

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

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

* WHEN...For the Heat Advisory, until 7 PM CDT this evening. For the 
  Excessive Heat Warning, from 10 AM to 7 PM CDT Tuesday.

* 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.

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.

Stay cool, stay hydrated, stay informed.

Monitor the latest forecasts and warnings for updates.

&&

$$

ARZ074-LAZ007-015-016-023>026-MSZ028>033-037>039-042>066-072>074-
300245-
/O.CON.KJAN.HT.Y.0021.000000T0000Z-240730T0000Z/
/O.CON.KJAN.HT.Y.0022.240730T1500Z-240731T0000Z/
Ashley-Morehouse-Richland-Madison LA-Franklin LA-Catahoula-Tensas-
Concordia-Montgomery-Webster-Clay-Lowndes-Choctaw-Oktibbeha-
Attala-Winston-Noxubee-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 Richland, Port Gibson, Bassfield, Union,
Forest, Hazlehurst, Vidalia, Jackson, Pearl River, Crossett,
Pearl, Harrisonburg, Louisville, Jonesville, Hattiesburg, Winona,
Stonewall, Newellton, Eupora, Meadville, Bastrop, West Point,
Heidelberg, Shubuta, Columbus, Philadelphia, De Kalb, Starkville,
Waterproof, Madison, North Crossett, Columbia, Taylorsville,
Wesson, Mendenhall, Mount Olive, Vicksburg, Hamburg, Scooba,
Collins, Ferriday, Ridgeland, Crystal Springs, West Ferriday, Bay
Springs, Newton, Brandon, Mathiston, Weir, Morton, Canton,
Lumberton, Ackerman, Raleigh, Laurel, New Hebron, Quitman,
Brookhaven, Macon, Magee, Prentiss, Winnsboro, Roxie, Carthage,
Delhi, West Hattiesburg, Kosciusko, Monticello, Meridian, Yazoo
City, St. Joseph, Purvis, Tallulah, Decatur, Fayette,
Brooksville, West Crossett, Bude, Conehatta, Natchez, and
Rayville
133 PM CDT Mon Jul 29 2024

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

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

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

* WHEN...For the first Heat Advisory, until 7 PM CDT this evening. 
  For the second Heat Advisory, from 10 AM to 7 PM CDT Tuesday.

* 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.

Monitor the latest forecasts and warnings for updates.

&&

$$

AJ
174 
WWUS74 KJAN 300003
NPWJAN

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
703 PM CDT Mon Jul 29 2024

ARZ075-LAZ008-009-MSZ018-019-025>027-034>036-040-041-300815-
/O.EXP.KJAN.HT.Y.0021.000000T0000Z-240730T0000Z/
/O.CON.KJAN.EH.W.0008.240730T1500Z-240731T0000Z/
Chicot-West Carroll-East Carroll-Bolivar-Sunflower-Leflore-
Grenada-Carroll-Washington-Humphreys-Holmes-Issaquena-Sharkey-
Including the cities of Lake Providence, Tchula, Durant,
Greenwood, Belzoni, Dermott, North Carrollton, Mayersville,
Vaiden, Epps, Greenville, Indianola, Eudora, Carrollton, Pickens,
Goodman, Anguilla, Rolling Fork, Lexington, Ruleville, Cleveland,
Lake Village, Grenada, Oak Grove, and Isola
703 PM CDT Mon Jul 29 2024

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM TO 7 PM CDT 
TUESDAY...
...HEAT ADVISORY HAS EXPIRED...

* WHAT...Dangerously hot conditions with heat index values up to 
  110-115F expected.

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

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

* 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.

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.

Stay cool, stay hydrated, stay informed.

Monitor the latest forecasts and warnings for updates.

&&

$$

ARZ074-LAZ007-015-016-023>026-MSZ028>033-037>039-042>066-072>074-
300815-
/O.EXP.KJAN.HT.Y.0021.000000T0000Z-240730T0000Z/
/O.CON.KJAN.HT.Y.0022.240730T1500Z-240731T0000Z/
Ashley-Morehouse-Richland-Madison LA-Franklin LA-Catahoula-Tensas-
Concordia-Montgomery-Webster-Clay-Lowndes-Choctaw-Oktibbeha-
Attala-Winston-Noxubee-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 Monticello, Harrisonburg, Meridian,
Madison, Starkville, Richland, Tallulah, West Crossett,
Conehatta, Jackson, Philadelphia, Mendenhall, Hamburg, Raleigh,
Newton, Delhi, Pearl River, Ackerman, Port Gibson, Natchez,
Taylorsville, West Hattiesburg, Brookhaven, Mount Olive,
Brooksville, Quitman, Ferriday, Mathiston, Fayette, Eupora, Bude,
Kosciusko, Prentiss, Winona, Jonesville, Winnsboro, Newellton,
Bassfield, Vidalia, Heidelberg, West Point, Scooba, Columbia,
Weir, Brandon, Decatur, Morton, Macon, Hattiesburg, Lumberton,
Union, North Crossett, Laurel, De Kalb, Wesson, Hazlehurst,
Collins, Canton, Forest, West Ferriday, Magee, Ridgeland,
Meadville, Pearl, Yazoo City, Crossett, Bay Springs, Purvis,
Waterproof, Louisville, Crystal Springs, St. Joseph, Roxie,
Bastrop, Rayville, New Hebron, Vicksburg, Columbus, Shubuta,
Carthage, and Stonewall
703 PM CDT Mon Jul 29 2024

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

* WHAT...Heat index values up to 109 expected.

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

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

* 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.

Monitor the latest forecasts and warnings for updates.

&&

$$

OAJ

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 Jackson, MS wrote its last area forecast discussion before this heat advisory went out at Jul 28, 12:34 PM CDT, 44 minutes earlier.

Area forecast discussion, Jul 28, 12:34 PM CDT, 44 minutes before
Area Forecast Discussion
National Weather Service Jackson MS
1234 PM CDT Sun Jul 28 2024

...New AVIATION...

.MESOSCALE UPDATE...
Issued at 935 AM CDT Sun Jul 28 2024

Not much to talk about in regards to the forecast package for this
morning. Global guidance continues to highlight an upper low to the
northwest and building high pressure over the northern Gulf. This
will help maintain SW flow regime over the area today with continued
rain chances (between 40-45%) and afternoon thunderstorms. Local
radar scans show a line of scattered showers along with a few
storms tracking northeastward across the MS Delta, along with a
few parishes in northeast Louisiana. 12Z morning sounding
observations indicate a saturated atmosphere with the air parcel
breaking through the capping inversion around 950 mb. This will
allow for mid-low level clouds to occur across central MS. A quick
look at GOES 16 visible satellite imagery shows ongoing cloud
cover across our entire forecast area. With this in mind, the
persistent cloud cover will keep temperatures below seasonal norms
with afternoon highs in the upper 80s in most locations. Areas in
the southeast will see temperatures in the low 90s. /CR/

&&

.DISCUSSION...
Issued at 430 AM CDT Sun Jul 28 2024

Today and tonight: Upper low to the northwest and high pressure
over the northern Gulf will maintain SW flow regime over our area
through today with continued rain chances and afternoon
thunderstorms. Persistent cloud cover will keep temperatures
mostly below seasonal norms with highs generally in the 80s in
most locations, though we begin to see warmer temperatures today
in the southeast (low 90s). Thunderstorms should taper off with
waning instability late evening. Our SW flow regime finally begins
to transition tonight to a warmer and drier pattern in store for
next week. Dry air pushes into the midlevels as upper ridging
begins to build from the west and should reduce rain chances from
west to east through early Monday morning./SAS/

Monday through Saturday: A significant change in the weather
pattern will take place for the upcoming work week into next
weekend with wet and relatively mild conditions coming to an
abrupt end while heat makes an unwelcome return.

Confidence is high that a large, strong subtropical high will
build over the Southern Plains with a ridge axis extending
eastward across the lower MS Valley as we go through this week.
With H850 temperatures reaching the lower 20s deg C, surface
temperatures should have no trouble reaching the upper 90s to
perhaps near 100. And after the very wet pattern recently
experienced, evapotranspiration should support a very humid
boundary layer in the increasingly stagnant airmass and a
stifling combination of heat and humidity. In terms of rainfall,
the increased large scale subsidence and anticyclonic flow should
help to limit diurnal convective rainfall coverage.

For now have increased the heat risk level in the hazard graphics
to "elevated" for Monday and maintained that through the
remainder of the forecast. It is likely that some portions of the
area will need to be increased to the "significant" level,
especially by mid/late week. Stay tuned for hot weather headlines
with heat advisories being necessary as early as Monday, and
perhaps excessive heat warnings later in the week. /EC/

&&

.AVIATION...
(18Z TAFS)
Issued at 1234 PM CDT Sun Jul 28 2024

Current radar scans show some isolated showers and storms near the
Pine Belt. With that in mind, all TAF sites will see VFR conditions
prevailing to start off the TAF period. VFR conditions will prevail
across central MS through 23Z Sunday. Several southern sites (HBG,
HEZ, and PIB) will start to see ceilings drop to MVFR starting
around 00Z Monday as clouds continue to track to the east. These
MVFR cigs will last until 02Z Monday. Ceilings will start to
improve to VFR status by 03Z Monday. VFR conditions will continue
to prevail across central MS through Monday morning. Winds will
prevail from the southwest around 3 to 5 mph. /CR/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       75  94  76  95 /  40  30  10  10
Meridian      74  95  75  97 /  30  50  10  40
Vicksburg     76  93  76  95 /  10  20   0   0
Hattiesburg   76  96  76  97 /  30  40  10  40
Natchez       75  92  74  93 /  20  20   0  10
Greenville    74  93  77  95 /  30  10   0   0
Greenwood     74  94  77  95 /  20  20   0  10

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...None.
LA...None.
AR...None.
&&

SAS/EC/CR

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 27, 9:09 PM CDTFlash Flood WarningJANClay, Lowndes2 hr
Jul 27, 11:22 PM CDTFlash Flood WarningJANClay, Oktibbeha2 hr

Nearby

Heat Advisories in Mississippi, 2024Heat Advisories in Louisiana, 2024Heat Advisories in Arkansas, 2024Every heat advisory in 2024

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.