740
FXUS64 KJAN 301903
AFDJAN

Area Forecast Discussion
National Weather Service Jackson MS
203 PM CDT Thu Jul 30 2026

...New DISCUSSION...

.KEY MESSAGES...

- Heat stress will continue to be a concern over much of the area
  today and Friday.

&&

.DISCUSSION...
Issued at 147 PM CDT Thu Jul 30 2026

Through Friday: Unfortunately, the relief from the dangerous heat
stress has been delayed some, and a heat advisory has been
extended through Friday and now includes the entire area. The
oppressive heat has maintained today over most of the area as
boundary layer humidity is peaking at the worst time in
association with moisture pooling associated with a weak surface
boundary over our area. High dewpoints combined with temperatures
rising well into the 90s is sending heat index values to around
110, but will say that scattered convective precipitation will
hopefully help to reduce some of the heat, or at least keeping it
from reaching more dangerous levels, as we go through the
remainder of the afternoon. Expect a general repeat of today`s
weather for Friday with fairly high coverage of diurnally driven
convection, and have maintained the elevated heat threat grahic.
/EC/

Saturday Onwards: The long-term forecast remains on track.
Increased chances for convective activity and cloud coverage will
take hold due to the surface confluence from the aforementioned
front, which could provide a few degree dip, thus mitigating heat
threat concerns. With upper flow becoming more northerly and
northwesterly during this time frame, we will see the potential
for one or two convective complexes moving into the area or
developing over the area. This will result in continued higher
diurnal rain chances heading into the weekend. Going into early
next week, conditions become less favorable for convective
coverage. In terms of sensible weather, we`ll see rain chances
diminish and heat potentially rebuild some, but it should remain
below what we`ve seen over the last few days. /OAJ/EC/

&&

.AVIATION...
(18Z TAFS)
Issued at 1239 PM CDT Thu Jul 30 2026

VFR conditions prevail with scattered high clouds and light
westerly winds. Isolated to scattered storms are expected to
persist through the afternoon. As of 12:40 PM, +TSRA at MEI. VCTS
is likely for roughly the southern half of the area. /SAS/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       75  93  75  93 /  30  60  20  20
Meridian      74  91  74  91 /  30  70  40  50
Vicksburg     75  94  76  93 /  30  40  20  20
Hattiesburg   75  91  75  92 /  30  50  20  30
Natchez       75  95  75  94 /  20  10  10  10
Greenville    75  95  76  94 /  20  40  40  30
Greenwood     74  93  75  93 /  20  60  40  30

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Heat Advisory until 7 PM CDT this evening for MSZ018-019-025-
     034>036-040>044-047>051-053>066-072>074.

     Heat Advisory from 10 AM to 7 PM CDT Friday for MSZ018-019-
     025>066-072>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 Friday 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 Friday for ARZ074-075.

&&

$$

EC/OAJ/SAS20