FXUS64 KJAN 080738
AFDJAN

Area Forecast Discussion
National Weather Service Jackson MS
238 AM CDT Wed Jul 8 2026

...New DISCUSSION...

.KEY MESSAGES... 

- Dangerous levels of heat returns late this week and persist 
  into the weekend.

&&

.DISCUSSION...
Issued at 237 AM CDT Wed Jul 8 2026

Today through next Tuesday...A mid/upper level trough residing about 
the region will gradually weaken and become absorbed in quasi-zonal 
flow across the country.  This will allow sub-tropical ridging to 
increase its presence across the Lower Mississippi River Valley late 
this week and into the upcoming weekend.  Meanwhile at the surface, 
high pressure centered to the southeast of the CWA will maintain 
southerly flow across the region, thus keeping humid conditions 
across the area.

With the presence of the trough nearby today and Thursday, decent 
chances for diurnally driven convection will remain in the 
forecast.  Convection will linger into the evening hours, before 
finally dissipating as daytime heating wanes.  Gusty winds, locally 
heavy downpours, and frequent lightning will be possible with the 
most intense storms.  As the aforementioned sub-tropical high builds 
in Friday into the weekend, rain chances will lessen a bit but still 
be confined to mainly the afternoon and early evening hours.

With highs topping out in the low to middle 90s each afternoon and 
dew points in the 70s, afternoon heat index values will climb to 
around 105F in many locations Thursday into the at least Saturday. 
If this trend continues in future model data, a "Heat Advisory" may 
be needed for portions of the area late this week and into the 
weekend.

Better rain chances currently look to return to the forecast at the 
beginning of next week.  This is due to a frontal boundary that's 
progged to sink south into the region.  If this scenario indeed 
verifies, the widespread showers and storms over the area will bring 
an end to the heat stress across the forecast area for at least a 
few days. /19/


&&

.AVIATION...
(06Z TAFS)
Issued at 1239 AM CDT Wed Jul 8 2026

VFR flight conditions with light, southwesterly winds will prevail 
through the period. /SW/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       92  73  92  74 /  20  10  30  10 
Meridian      93  73  93  74 /  30  10  40  10 
Vicksburg     92  75  93  76 /  40  10  10  10 
Hattiesburg   94  75  94  75 /  20  20  40  10 
Natchez       93  75  94  75 /  30  10  20   0 
Greenville    92  74  94  77 /  30  10  40  10 
Greenwood     92  74  94  76 /  30  20  50  10 

&&

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

$$

19/SW