Roundlake, Mississippi Weather Forecast Discussion

722
FXUS64 KJAN 170145 AAB
AFDJAN
Area Forecast Discussion...UPDATED
National Weather Service Jackson MS
845 PM CDT Tue Sep 16 2025
...New MESOSCALE UPDATE...
.MESOSCALE UPDATE...
Issued at 845 PM CDT Tue Sep 16 2025
Stronger convection has now dissipated with the loss of diurnal
instability. A few showers will remain possible tonight, mainly
over the next few hours, within the low level cyclonic flow
regime; however, additional stronger convection is rather
unlikely. Otherwise, seasonable conditions will continue
overnight. /DL/
&&
.DISCUSSION...
Issued at 251 PM CDT Tue Sep 16 2025
Overall, the forecast continues to look warm and relatively dry
for the most part with above normal temperatures and below normal
rainfall.
Through tonight: Isolated thunderstorms will continue to develop
in association with the upper low centered over the southeast
CONUS. Cyclonic flow and lift associated with the low will
continue to interact with and abundance of moisture and
instability to support a few strong to severe storms. The storms
should peak prior to sunset, but a few storms will likely linger
into the evening. /EC/
Wednesday through Monday night: The remainder of the forecast
will see a pattern breakdown as centers of upper-level low
pressure over the Northern Rockies and the eastern CONUS weaken.
Flow across the CONUS should become zonal by the weekend, but
there will still be some opportunity for shortwave trough
amplification that could yield more areal coverage of showers and
thunderstorms possible, especially as the western system pivots
through the central part of the country. Average temps will still
be a little warmer than normal - about 3 to 5 degrees warmer than
normal on most days. /NF/EC/
&&
.AVIATION...
(00Z TAFS)
Issued at 615 PM CDT Tue Sep 16 2025
Isolated primarily afternoon and early evening convection will
remain possible into Wednesday, resulting in brief ceiling and
visby reductions and potentially strong wind gusts for the areas
impacted. Otherwise, VFR conditions will prevail through the TAF
period with light wind. /DL/
&&
.PRELIMINARY POINT TEMPS/POPS...
Jackson       69  91  68  93 /  10  10   0   0
Meridian      67  92  66  93 /   0  10   0   0
Vicksburg     69  92  68  92 /  20  10   0  10
Hattiesburg   67  94  66  94 /   0  10   0   0
Natchez       69  91  67  92 /  10  10   0   0
Greenville    69  94  68  93 /  10  10   0  10
Greenwood     68  94  67  94 /  10  10   0   0
&&
.JAN WATCHES/WARNINGS/ADVISORIES...
MS...None.
LA...None.
AR...None.
&&
$$
DL/EC/NF

NWS JAN Office Area Forecast Discussion