Canton, Mississippi 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

094
FXUS64 KJAN 242341 AAA
AFDJAN

Area Forecast Discussion...UPDATED
National Weather Service Jackson MS
641 PM CDT Thu Jul 24 2025

...New AVIATION...

.DISCUSSION...
Issued at 101 PM CDT Thu Jul 24 2025

Today and Tomorrow...

Another hot and humid day is expected today and for the foreseeable
future. As such we have a heat advisory/warning for the entire CWA
which will remain in effect until sunset.

Tomorrow there will be some mild relief from sweltering temperature
to the east of I-55, with HIs topping out between 100F and 95F.
Elsewhere heat index values will remain in the triple digits. There
is a shot at southern sectors seeing some cooling from sporadic rain
showers that are expected to redevelop again in those areas
tomorrow. Confidence is not particularly high for HIs breaking into
advisory levels nor is confidence high that those values remain
below thresholds. As such we have messaged an Elevated Threat for
areas that include the southwestern quadrant but have eschewed
publishing a Heat Advisory for tomorrow at this time. Once we sample
the environment and attendant mixing tomorrow morning there could be
an advisory issue that encompasses the area in question. All other
areas that are expected to break into the triple digits have already
had their products issued for tomorrow.

There is a weak disturbance out in the Gulf right now that has a 10%
of development over the next 7 days. We will continue to monitor but
at this point it looks like we should be free from any tropical
impacts over the next week.

Through Late Next Week...

A west-east oriented 594+ dam 500mb upper-level ridge will remain
entrenched over much of the eastern 2/3rds of the CONUS throughout
the period. The strength of the core of this ridge is in the 90th to
99th percentile range, indicative of the dangerous heat stress
threat in poses for large swaths of the country over the next week.
Easterly waves south of the ridge will bring intermittent
disruptions to the heat and humidity driven by the ridge with
accompanying bump in rain chances.

There is a good chance that we will need widespread Extreme Heat
warnings through next week, with Tuesday/Wednesday set to be our
hottest days (heat indexes between 120-115F).

It should be noted that with the wealth of latent heat/potential
energy, there remains a small chance near daily for a microscale
feature (thunderstorm/shower) locally overachieving by overcoming
the strong mid-upper level inversion can not be ruled out. Should
that happen, a brief severe thunderstorm producing damaging winds
can not be ruled out. As always it remains prudent to monitor all of
our messaging for the latest updates this summer.

Long Term Heat Outlook...

We did look further ahead through the next month or so to see if
there is any real relief from the heat on the horizon. There does
not look to be any shift in the pattern or a break coming
up./OAJ/

&&

.AVIATION...
(00Z TAFS)
Issued at 641 PM CDT Thu Jul 24 2025

Afternoon VCTS/TSRA are currently moving through the area. This
activity will gradually diminish during the early portion of the
evening. Expect VFR flight conditions for majority of the TAF
period. Stratus cloud cover may briefly reduce flight conditions to
MVFR/possible IFR pre-sunrise Friday morning. /SW/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       75  92  74  93 /  20  70  10  50
Meridian      74  92  72  93 /  30  60  10  50
Vicksburg     76  92  75  94 /  20  60  10  50
Hattiesburg   76  92  75  93 /  30  70  20  80
Natchez       74  90  74  92 /  30  80  10  60
Greenville    76  92  75  93 /  10  40  10  40
Greenwood     76  93  75  94 /  10  50  10  40

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Heat Advisory from 11 AM to 7 PM CDT Friday for MSZ018-019-
     025>031-034>036-040>043-047-048.

LA...Heat Advisory from 11 AM to 7 PM CDT Friday for LAZ007>009-015-
     016.

AR...Heat Advisory from 11 AM to 7 PM CDT Friday for ARZ074-075.

&&

$$

OAJ/SW