007
FXUS64 KJAN 211119 AAA
AFDJAN

Area Forecast Discussion...UPDATED
National Weather Service Jackson MS
619 AM CDT Thu Aug 21 2025

...New AVIATION...

.DISCUSSION...
Issued at 241 AM CDT Thu Aug 21 2025

Through Friday: A summer-variety front will continue to push
gradually southward into the area today, bringing a substantially
drier deep layer airmass roughly north of I-20 through tonight.
Dewpoints will also mix down into the 60s in its wake, which
should be noticeably more pleasant for much of our Delta area.
Redevelopment of shower activity later today will be limited in
the wake of the front. Farther south, warm and humid conditions
will remain. Redevelopment of convection will be more likely
there during the afternoon through the early evening. NBM guidance
still offers heat indices around critical thresholds across south
MS and central LA for today. However, there`s a decent chance,
due to lingering cloud debris and earlier convective
redevelopment, that heat indices will underperform similar to
what transpired yesterday. For this reason, we do not plan to
advertise heat stress concerns via HWO graphics or advisories
today.

But let`s get back to talking about relief behind this front. For
tonight, temps in the 60s are expected over much of the northern
half of the area. Friday will be similar to today, except the front
will be slightly farther south, so areas south of I-20 will begin
to experience less muggy conditions during the day tomorrow.
There will still be sufficient moisture and convergence along the
front for scattered diurnal convection across central LA and
south/southeast MS. By Saturday morning, lows in the 60s can`t be
ruled out at some cooler spots even into south MS.

Saturday through Wednesday: A similar pattern will continue into
this weekend, though the original front will begin to wash out near
the Gulf Coast. Conditions will be seasonably warm in most areas, but
more tolerable due to lower humidity. Isolated to scattered diurnal
convection will primarily be limited to south/east MS. Mornings will
also be more pleasant and slightly cooler.

A reinforcing front will arrive in the Sunday night/Monday time
frame, bringing a more substantial push of drier air southward into
the area. By Tuesday, high temps below 90 will become more common,
and most areas will have morning lows in the 60s. A few cooler
spots in north MS could even touch the upper 50s by Thursday
morning. Rain chances will be limited, though isolated showers
could return by midweek. /DL/

&&

.AVIATION...
(12Z TAFS)
Issued at 619 AM CDT Thu Aug 21 2025

An LIFR to MVFR stratus deck encompasses portions of central and
eastern MS early this morning. These clouds should erode by mid-
morning, with VFR conditions returning. Isolated to scattered SHRA
and TS are expected this afternoon, mainly across south MS and
central/south LA. This activity will remain possible through the
early evening hours. Otherwise, VFR conditions will prevail
through the TAF period with generally light wind. /DL/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       92  72  93  70 /  50  20  20  10
Meridian      91  72  91  71 /  60  20  40  20
Vicksburg     92  71  93  69 /  50  20  20  10
Hattiesburg   95  74  92  72 /  70  40  60  20
Natchez       92  71  91  69 /  60  30  30  10
Greenville    93  69  93  69 /  10   0   0   0
Greenwood     94  68  94  69 /  10   0  10   0

&&

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

$$

DL