Heat Advisory 3, NWS Jackson, MS

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

515 
WWUS74 KJAN 250007
NPWJAN

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
707 PM CDT Sat Jul 24 2021

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>028-034>037-
040>044-047>050-053>056-059>065-072>074-250815-
/O.EXP.KJAN.HT.Y.0002.000000T0000Z-210725T0000Z/
/O.CON.KJAN.HT.Y.0003.210725T1500Z-210726T0000Z/
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar-
Sunflower-Leflore-Grenada-Carroll-Montgomery-Washington-Humphreys-
Holmes-Attala-Issaquena-Sharkey-Yazoo-Madison MS-Leake-Warren-
Hinds-Rankin-Scott-Claiborne-Copiah-Simpson-Smith-Jefferson-Adams-
Franklin MS-Lincoln-Lawrence-Jefferson Davis-Covington-Marion-
Lamar-Forrest-
Including the cities of Crossett, North Crossett, Hamburg, 
West Crossett, Dermott, Lake Village, Eudora, Bastrop, Oak Grove,
Epps, Lake Providence, Rayville, Delhi, Tallulah, Winnsboro, 
Jonesville, Harrisonburg, Newellton, St. Joseph, Waterproof, 
Vidalia, Ferriday, West Ferriday, Cleveland, Indianola, 
Ruleville, Greenwood, Grenada, Vaiden, North Carrollton, 
Carrollton, Winona, Greenville, Belzoni, Isola, Durant, Tchula, 
Lexington, Pickens, Goodman, Kosciusko, Mayersville, 
Rolling Fork, Anguilla, Yazoo City, Ridgeland, Madison, Canton, 
Carthage, Vicksburg, Jackson, Pearl, Brandon, Richland, Forest, 
Morton, Port Gibson, Crystal Springs, Hazlehurst, Wesson, Magee, 
Mendenhall, Taylorsville, Raleigh, Fayette, Natchez, Bude, Roxie,
Meadville, Brookhaven, Monticello, New Hebron, Prentiss, 
Bassfield, Collins, Mount Olive, Columbia, West Hattiesburg, 
Lumberton, Purvis, and Hattiesburg
707 PM CDT Sat Jul 24 2021

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM TO 7 PM CDT
SUNDAY...
...HEAT ADVISORY FOR EARLIER TODAY HAS EXPIRED...

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

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

* WHEN...For 10 AM to 7 PM CDT Sunday.

* IMPACTS...The combination of hot temperatures and high humidity
  will increase the risk for heat related illnesses to occur.

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
stroke. Wear lightweight and loose fitting clothing when
possible. 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.

&&

$$

MSZ029>033-038-039-045-046-051-052-057-058-066-250115-
/O.EXP.KJAN.HT.Y.0002.000000T0000Z-210725T0000Z/
Webster-Clay-Lowndes-Choctaw-Oktibbeha-Winston-Noxubee-Neshoba-
Kemper-Newton-Lauderdale-Jasper-Clarke-Jones-
Including the cities of Eupora, Mathiston, West Point, Columbus, 
Ackerman, Weir, Starkville, Louisville, Macon, Brooksville, 
Philadelphia, Pearl River, De Kalb, Scooba, Newton, Union, 
Decatur, Conehatta, Meridian, Bay Springs, Heidelberg, Quitman, 
Stonewall, Shubuta, and Laurel
707 PM CDT Sat Jul 24 2021

...HEAT ADVISORY HAS EXPIRED...

The heat advisory that was in effect for earlier today has 
expired. A heat advisory remains in effect for Sunday for much of
the ArkLaMiss region.

$$

464 
WWUS74 KJAN 250907
NPWJAN

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
407 AM CDT Sun Jul 25 2021

MSZ066-251715-
/O.EXA.KJAN.HT.Y.0003.210725T1500Z-210726T0000Z/
Jones-
Including the city of Laurel
407 AM CDT Sun Jul 25 2021

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

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

* WHERE...Jones County.

* WHEN...For 10 AM to 7 PM CDT Sunday.

* IMPACTS...The combination of hot temperatures and high 
  humidity will increase the risk for heat related illnesses to 
  occur.

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
stroke. Wear lightweight and loose fitting clothing when
possible. 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.

&&

$$

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>028-034>037-
040>044-047>050-053>056-059>065-072>074-251715-
/O.CON.KJAN.HT.Y.0003.210725T1500Z-210726T0000Z/
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar-
Sunflower-Leflore-Grenada-Carroll-Montgomery-Washington-Humphreys-
Holmes-Attala-Issaquena-Sharkey-Yazoo-Madison MS-Leake-Warren-
Hinds-Rankin-Scott-Claiborne-Copiah-Simpson-Smith-Jefferson-Adams-
Franklin MS-Lincoln-Lawrence-Jefferson Davis-Covington-Marion-
Lamar-Forrest-
Including the cities of Crossett, North Crossett, Hamburg, 
West Crossett, Dermott, Lake Village, Eudora, Bastrop, Oak Grove,
Epps, Lake Providence, Rayville, Delhi, Tallulah, Winnsboro, 
Jonesville, Harrisonburg, Newellton, St. Joseph, Waterproof, 
Vidalia, Ferriday, West Ferriday, Cleveland, Indianola, 
Ruleville, Greenwood, Grenada, Vaiden, North Carrollton, 
Carrollton, Winona, Greenville, Belzoni, Isola, Durant, Tchula, 
Lexington, Pickens, Goodman, Kosciusko, Mayersville, 
Rolling Fork, Anguilla, Yazoo City, Ridgeland, Madison, Canton, 
Carthage, Vicksburg, Jackson, Pearl, Brandon, Richland, Forest, 
Morton, Port Gibson, Crystal Springs, Hazlehurst, Wesson, Magee, 
Mendenhall, Taylorsville, Raleigh, Fayette, Natchez, Bude, Roxie,
Meadville, Brookhaven, Monticello, New Hebron, Prentiss, 
Bassfield, Collins, Mount Olive, Columbia, West Hattiesburg, 
Lumberton, Purvis, and Hattiesburg
407 AM CDT Sun Jul 25 2021

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

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

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

* WHEN...For 10 AM to 7 PM CDT Sunday.

* IMPACTS...The combination of hot temperatures and high 
  humidity will increase the risk for heat related illnesses to 
  occur.

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
stroke. Wear lightweight and loose fitting clothing when
possible. 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.

&&

$$

865 
WWUS74 KJAN 251731
NPWJAN

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
1231 PM CDT Sun Jul 25 2021

MSZ029>033-038-039-045-046-051-052-057-058-260000-
/O.EXA.KJAN.HT.Y.0003.000000T0000Z-210726T0000Z/
Webster-Clay-Lowndes-Choctaw-Oktibbeha-Winston-Noxubee-Neshoba-
Kemper-Newton-Lauderdale-Jasper-Clarke-
Including the cities of Eupora, Mathiston, West Point, Columbus, 
Ackerman, Weir, Starkville, Louisville, Macon, Brooksville, 
Philadelphia, Pearl River, De Kalb, Scooba, Newton, Union, 
Decatur, Conehatta, Meridian, Bay Springs, Heidelberg, Quitman, 
Stonewall, and Shubuta
1231 PM CDT Sun Jul 25 2021

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

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

* WHERE...Portions of central, east central, north central and 
  northeast Mississippi.

* WHEN...Until 7 PM CDT Sunday.

* IMPACTS...The combination of hot temperatures and high humidity
  will increase the risk for heat related illnesses to occur.

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
stroke. Wear lightweight and loose fitting clothing when
possible. 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.

&&

$$

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>028-034>037-
040>044-047>050-053>056-059>066-072>074-260000-
/O.CON.KJAN.HT.Y.0003.000000T0000Z-210726T0000Z/
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar-
Sunflower-Leflore-Grenada-Carroll-Montgomery-Washington-Humphreys-
Holmes-Attala-Issaquena-Sharkey-Yazoo-Madison MS-Leake-Warren-
Hinds-Rankin-Scott-Claiborne-Copiah-Simpson-Smith-Jefferson-Adams-
Franklin MS-Lincoln-Lawrence-Jefferson Davis-Covington-Jones-
Marion-Lamar-Forrest-
Including the cities of Crossett, North Crossett, Hamburg, 
West Crossett, Dermott, Lake Village, Eudora, Bastrop, Oak Grove,
Epps, Lake Providence, Rayville, Delhi, Tallulah, Winnsboro, 
Jonesville, Harrisonburg, Newellton, St. Joseph, Waterproof, 
Vidalia, Ferriday, West Ferriday, Cleveland, Indianola, 
Ruleville, Greenwood, Grenada, Vaiden, North Carrollton, 
Carrollton, Winona, Greenville, Belzoni, Isola, Durant, Tchula, 
Lexington, Pickens, Goodman, Kosciusko, Mayersville, 
Rolling Fork, Anguilla, Yazoo City, Ridgeland, Madison, Canton, 
Carthage, Vicksburg, Jackson, Pearl, Brandon, Richland, Forest, 
Morton, Port Gibson, Crystal Springs, Hazlehurst, Wesson, Magee, 
Mendenhall, Taylorsville, Raleigh, Fayette, Natchez, Bude, Roxie,
Meadville, Brookhaven, Monticello, New Hebron, Prentiss, 
Bassfield, Collins, Mount Olive, Laurel, Columbia, 
West Hattiesburg, Lumberton, Purvis, and Hattiesburg
1231 PM CDT Sun Jul 25 2021

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

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

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

* WHEN...Until 7 PM CDT Sunday.

* IMPACTS...The combination of hot temperatures and high 
  humidity will increase the risk for heat related illnesses to 
  occur.

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
stroke. Wear lightweight and loose fitting clothing when
possible. 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.

&&

$$

HJS

118 
WWUS74 KJAN 251932
NPWJAN

URGENT - WEATHER MESSAGE
National Weather Service Jackson MS
232 PM CDT Sun Jul 25 2021

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025-034>036-
040>043-047>049-053>055-059>064-072-260400-
/O.NEW.KJAN.HT.Y.0004.210726T1500Z-210727T0000Z/
/O.CON.KJAN.HT.Y.0003.000000T0000Z-210726T0000Z/
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar-
Sunflower-Leflore-Washington-Humphreys-Holmes-Issaquena-Sharkey-
Yazoo-Madison MS-Warren-Hinds-Rankin-Claiborne-Copiah-Simpson-
Jefferson-Adams-Franklin MS-Lincoln-Lawrence-Jefferson Davis-
Marion-
Including the cities of Crossett, North Crossett, Hamburg, 
West Crossett, Dermott, Lake Village, Eudora, Bastrop, Oak Grove,
Epps, Lake Providence, Rayville, Delhi, Tallulah, Winnsboro, 
Jonesville, Harrisonburg, Newellton, St. Joseph, Waterproof, 
Vidalia, Ferriday, West Ferriday, Cleveland, Indianola, 
Ruleville, Greenwood, Greenville, Belzoni, Isola, Durant, Tchula,
Lexington, Pickens, Goodman, Mayersville, Rolling Fork, Anguilla,
Yazoo City, Ridgeland, Madison, Canton, Vicksburg, Jackson, 
Pearl, Brandon, Richland, Port Gibson, Crystal Springs, 
Hazlehurst, Wesson, Magee, Mendenhall, Fayette, Natchez, Bude, 
Roxie, Meadville, Brookhaven, Monticello, New Hebron, Prentiss, 
Bassfield, and Columbia
232 PM CDT Sun Jul 25 2021

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

* 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 northeast Louisiana, central, north 
  central, northwest, south central, southwest and west central 
  Mississippi and southeast Arkansas.

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

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


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
stroke. Wear lightweight and loose fitting clothing when
possible. 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.

&&

$$

MSZ026>033-037>039-044>046-050>052-056>058-065-066-073-074-260000-
/O.CON.KJAN.HT.Y.0003.000000T0000Z-210726T0000Z/
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 Grenada, Vaiden, North Carrollton, 
Carrollton, Winona, Eupora, Mathiston, West Point, Columbus, 
Ackerman, Weir, Starkville, Kosciusko, Louisville, Macon, 
Brooksville, Carthage, Philadelphia, Pearl River, De Kalb, 
Scooba, Forest, Morton, Newton, Union, Decatur, Conehatta, 
Meridian, Taylorsville, Raleigh, Bay Springs, Heidelberg, 
Quitman, Stonewall, Shubuta, Collins, Mount Olive, Laurel, 
West Hattiesburg, Lumberton, Purvis, and Hattiesburg
232 PM CDT Sun Jul 25 2021

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

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

* WHERE...Portions of central, east central, north central and 
  northeast Mississippi.

* WHEN...Until 7 PM CDT Sunday.

* IMPACTS...The combination of hot temperatures and high 
  humidity will increase the risk for heat related illnesses to 
  occur.

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
stroke. Wear lightweight and loose fitting clothing when
possible. 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.

&&

$$

Area Forecast Discussion
National Weather Service Jackson MS
248 PM CDT Sat Jul 24 2021

.DISCUSSION...

Tonight and tomorrow...

Upper level ridging over much of the southern half of the CONUS this
afternoon is the primary driver of the forecast in the short term...
and well into the mid range.  Hot and humid conditions will continue
with low level moisture being reinforced by late afternoon and early
evening showers/convection. Temps climbing into the 90s and
dewpoints in the mid to upper 70s early on resulted in plenty of
CAPE... but lapse rates in the midlevels were less than ideal. The
storms briefly go up, but rarely more than 40-45dBZ over 24kft. This
has been the trend under this ridge, with warm air still being
ushered in the mid levels and sfc temps on a slow climb.
Overnight tonight, the enhanced llvl RH will result in some patchy
fog in low lying areas. With some concerns for how much mixing out
will actually be achieved under current cloud cover...have added a
patchy mention in the grids...otherwise a hot and muggy overnight
with lows in the mid to upper 70s. Tomorrow will bring much of the
same, and temps and heat indices on par with todays forecast.
Exception may be in the east where the cloud cover and anticipated
showers/thunder will be more of an impact. Have gone ahead with a
heat advisory for along and west of a line from Grenada to
Hattiesburg, as well as all of the ArkLaMiss region. /HJS/

Monday-next Friday...

Warmth & humidity will be the main concern through the week, with
scattered diurnal showers & storms possible through the period. Heat
stress will be elevated at the start but continued heat stress is
possible through the week.

Monday-Tuesday: At the start, the ArkLaMiss will remain on the E
periphery of strong mean ridge over the Intermountain West. This
will lead to continued low-level warmth, with thermal profiles
progged around low-mid 20 degrees C at 925mb. Continued above normal
warmth into the low-mid 90s is expected. Deep moisture around 2+
inches & in the low-levels will keep dewpoints in upper 70s to near
80 degrees at times. Continued elevated heat stress is expected
between 105-110 degrees F to the W of I-55 & near 105 degrees to the
E, outside of Meridian area which could be slightly lower. Rain
chances Mon. will be somewhat scattered. Perturbed E-NE flow could
bring shortwave ascent/increased low-level convergence more into
Tuesday, leading to slightly better convective coverage. Main
adjustments to the HWO were to expand the limited to encompass the
Hwy 82/Golden Triangle area. Decided to leave this through Tuesday.
Tuesday becomes more of a question mark with better convective
coverage & highs a touch lower. However, will leave it for now for
messaging purposes & any that occurs by mid-morning, in addition to
potential lower convective coverage than anticipated. Monday has
best chance for heat advisory potential & could reach this by mid-
morning to early afternoon. Flow will be subtle & lapse rates
weaker. However, with such high low-level moisture/Theta E, some
microburst/gusty wind potential & heavy downpours with isolated
flash flooding can't be ruled out.

Wednesday-Friday: Expect mean ridge to build E out of the lee of the
Rockies into the central Plains & deepen, leading to continued
warmth in the ArkLaMiss through mid-late week. A weak upper low in
the central-W Gulf will wash out while elevated moisture will remain
through late week. As a mean trough remains locked in over the Great
Lakes/Mid-Atlantic/NE, this will drive a weak front off to our NE.
This could help any of the lingering deep 2+ inch PWs to propagate
to the S & E, bringing best scattered-likely rain & storm chances S
of I-20 Wed. & more into Hwy 84/98 corridors into Thurs-Fri. With
low-level heat & moisture remaining, heat stress will remain a
concern through mid-late next week. Advertisement in the
HWO/graphics & potential heat advisories will likely be needed as we
get closer. Stay cool & hydrated & take all heat safety precautions
this week. Microburst/gusty wind potential & isolated heavy
downpours are possible. With limited lapse rates aloft, any stronger
storms will be more isolated in coverage. /DC/

&&

.AVIATION...
18Z TAF discussion:
VCSH added to TAFs as the cu field has expanded quite a bit...up
to VCTS in MEI with thunder in proximity. VCTS across the board
later this afternoon as some sct convection strengthens.
Overnight, higher dewpoints potentially in the north and east in
model data has better chances for MVFR/IFR vis...but given the
showers currently invof MEI, will need to watch them for fog as
well. /HJS/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       76  94  76  94 /  17  37   9  58
Meridian      75  93  75  94 /  19  44   9  50
Vicksburg     77  95  77  95 /   6  24   9  48
Hattiesburg   76  93  75  95 /  22  54   7  43
Natchez       75  94  75  94 /   7  28  10  51
Greenville    76  95  76  94 /   8  23   9  48
Greenwood     75  95  75  95 /   9  29   8  57

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Heat Advisory until 7 PM CDT this evening for MSZ018-019-025>066-
     072>074.

     Heat Advisory from 10 AM to 7 PM CDT Sunday for MSZ018-019-
     025>028-034>037-040>044-047>050-053>056-059>065-072>074.

LA...Heat Advisory until 7 PM CDT this evening for LAZ007>009-015-016-
     023>026.

     Heat Advisory from 10 AM to 7 PM CDT Sunday for LAZ007>009-015-
     016-023>026.

AR...Heat Advisory until 7 PM CDT this evening for ARZ074-075.

     Heat Advisory from 10 AM to 7 PM CDT Sunday for ARZ074-075.

&&

HJS/DC

Hazardous Weather Outlook
National Weather Service Jackson MS
1027 AM CDT Sat Jul 24 2021

ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
251530-
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-
1027 AM CDT Sat Jul 24 2021

This hazardous weather outlook is for portions of southeast
Arkansas, northeast Louisiana, central Mississippi, north central
Mississippi, and south central Mississippi.

.DAY ONE...The rest of Today and Tonight

EXCESSIVE HEAT
THREAT...Elevated
TIMING...remainder of today

Temperatures in the lower to mid 90s will combine with plentiful
moisture to create heat indices in the 105 to 110 degree range
for portions of the area this weekend into early next week.
Residents are urged to use caution if spending time outdoors.

(https://www.weather.gov/images/jan/graphicast/1.png)

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Temperatures in the lower to mid 90s will combine with plentiful
moisture to create heat indices in the 105 to 110 degree range
for portions of the area this weekend into early next week.
Residents are urged to use caution if spending time outdoors.

(https://www.weather.gov/images/jan/graphicast/1.png)

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations is not expected through next Friday.

1

&&

...HAZARD LEGEND...

*EXCESSIVE HEAT*
Extreme...Maximum heat index greater than 110 degrees for 3 or
 more days in a row and/or air temperatures greater than 107
 degrees.
Significant...Maximum heat index greater than 110 degrees
 and/or air temperatures greater than 105 degrees.
Elevated...Maximum heat index 105 to 110 degrees and/or air
 temperatures greater than 103 degrees.
Limited...Maximum heat index near 105 degrees and/or air
 temperatures 100 to 103 degrees.

...USEFUL WEATHER WEB PAGES (URLS)...

NWS JAN Home page...
   https://www.weather.gov/jan
Stay Aware, Stay Safe NWS JAN Briefing Page...
   https://www.weather.gov/jan/safe
Latest Weather Briefing...
   https://www.weather.gov/jan/weather_briefing

Tropical page...
   https://www.weather.gov/srh/tropical?office=jan
National Hurricane Center Home Page...
   https://www.nhc.noaa.gov/
Find NWS JAN on Facebook...
   https://www.facebook.com/NWSJacksonMS
Follow NWS JAN on Twitter...
   @NWSJacksonMS
Follow NWS JAN on Youtube...
   https://www.youtube.com/user/NWSJacksonMiss

Special Weather Statement
National Weather Service Jackson MS
102 PM CDT Sat Jul 24 2021

MSZ046-052-241830-
Kemper MS-Lauderdale MS-
102 PM CDT Sat Jul 24 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL KEMPER AND
NORTHEASTERN LAUDERDALE COUNTIES UNTIL 130 PM CDT...

At 101 PM CDT, Meteorologists were tracking a strong thunderstorm
over Meridian Station, moving south at 15 mph.

Winds in excess of 40 mph will be possible with this storm.

This strong thunderstorm will be near...
  Lauderdale around 115 PM CDT.
  Marion and Toomsuba around 130 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3262 8874 3264 8851 3238 8842 3237 8872
TIME...MOT...LOC 1801Z 350DEG 13KT 3255 8860

HJS