Greenville, Mississippi 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

157
FXUS64 KJAN 191926
AFDJAN

Area Forecast Discussion
National Weather Service Jackson MS
226 PM CDT Sat Jul 19 2025

...New DISCUSSION...

.DISCUSSION...
Issued at 225 PM CDT Sat Jul 19 2025

This afternoon through Friday night:

The forecast is very straight-forward through Wednesday. It`s
basically hot, hotter, and hottest as the subtropical ridge will
peak over area during what is climatologically the hottest time
of the year. The ridge will support anomalously warm low level
temperatures (e.g., H850 T in the lower 20s deg C), and these will
correspond with a greater chance for us to observe 100 deg F high
temperatures. Between now and Wednesday, each day is forecast to
be a little hotter with peak heat stress expected Wednesday. By
that time, we may need an excessive heat warning with significant
impacts messaged. For now, we have issued a heat advisory that is
in effect Sunday, and have maintained the elevated heat threat in
the graphics. We will continue to assess and monitor for higher
level messaging/products, including excessive heat warnings, as we
approach mid week.

Going into late week, there may be some potential for relief from
the most significant heat stress as perturbations in the
westerlies over the northern CONUS get pulled around the east side
of the ridge and help to increase convective rainfall chances,
especially over southeast portions of the area. Having said this,
we would not count on there being a big pattern change as it
still looks to remain hot and humid and expect some sort of heat
related messaging to be required through the end of the forecast.
Another thing to monitor for could be the potential for a few
strong/severe multicell storms as the low/mid level flow around
the ridge will likely increase and become more cyclonic late this
week. /EC/

&&

.AVIATION...
(18Z TAFS)
Issued at 1238 PM CDT Sat Jul 19 2025

VFR conditions will prevail with a southerly wind,generally less
than 10kts. Scattered SHRA/TSRA may develop and lower categories
areawide through this evening. Overnight into Sunday some areas of
patchy fog/low stratus may develop and briefly lower
categories. /KP/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       74  95  75  96 /  10  10   0   0
Meridian      73  95  74  97 /  10  10   0  10
Vicksburg     75  95  75  97 /  10  10   0   0
Hattiesburg   75  97  76  98 /  20  10   0  10
Natchez       74  94  74  95 /  10  10   0   0
Greenville    75  95  75  96 /  10  10   0   0
Greenwood     75  95  77  96 /  10  20   0   0

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Heat Advisory from 10 AM to 8 PM CDT Sunday for MSZ018-019-025-
     034>036-040>043-047-048-053-054-059>062.

LA...Heat Advisory from 10 AM to 8 PM CDT Sunday for LAZ007>009-015-
     016-023>026.

AR...Heat Advisory from 10 AM to 8 PM CDT Sunday for ARZ074-075.

&&

$$

EC/KP/