Vicksburg, Mississippi 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

065
FXUS64 KJAN 130611 AAA
AFDJAN

Area Forecast Discussion...UPDATED
National Weather Service Jackson MS
111 AM CDT Wed Aug 13 2025

...New AVIATION...

.MESOSCALE UPDATE...
Issued at 845 PM CDT Tue Aug 12 2025

Rest of Tonight...Convection continues to wind down across the
forecast area as daytime heating wanes this evening.  While this
trend will continue over the next few hours, isolated showers will
remain possible through the overnight hours, particularly across
east and southeast Mississippi, as deep moisture further increases
across the region and a disturbance meanders south of the forecast
area over the north central gulf.  While high clouds will remain
overhead tonight, some low stratus is again forecast to develop
across mainly eastern and southern portions of the CWA after
midnight.  Otherwise, look for an overall quiet night as lows fall
into the middle 70s.

The ongoing forecast is in good shape.  The "Heat Advisory" for
today was cancelled a little early due to convection and associated
cloud cover over the previously advised area.  An update to the
forecast was sent at that time to remove the mention of it.
Therefore on this update, I`ll only make some minor tweaks to hourly
elements of the forecast based on current trends. /19/

&&

.DISCUSSION...
Issued at 237 PM CDT Tue Aug 12 2025

Dangerous heat will be the primary weather hazard concern as we
go through the next seven days. There is enough forecast
confidence to go ahead with another heat advisory for Wednesday
along/west of the MS River. The hottest conditions are expected
this weekend when low level thermal anomalies should peak (e.g.,
H850 T > 21 deg C). By that time, most of the area will likely
need a heat advisory, and significant heat may become more of a
concern. Looking well down the road, there are some increasing
signals for a drier and less hot airmass per discussion below.

In the meantime, fo this afternoon, we`re seeing sub-severe
storms with locally heavy downpours focus on the outer periphery
of the weak central Gulf Coast disturbance where deep moisture is
interacting with a seasonably hot and humid airmass. Unimpressive
mid level lapse rates are helping to mitigate the severe
microburst risk, and expect storms to diminish with sunset. For
the overnight, a few showers and storms could linger. /EC/

Wednesday through next Monday...The forecast remains on track,
with heat continuing to be the primary hazard. Our area remains
under the influence of a subtropical ridge, which will gradually
propagate westward along the southern CONUS. A surge of tropical
moisture on its western flank will increase rain chances Wednesday
(30-50%), with highest chances in the southeast (60-80%). Heat
indices will steadily increase, while rain chances steadily
decrease through late week as the subtropical ridge propagates and
builds over our area. Dewpoints remain
 in the mid to upper 70s
while temperatures climb to the mid to upper 90s. Confidence is
increasing on the need for expanded heat headlines to more
portions of the area, with perhaps a targeted extreme heat warning
in the west. Will maintain the HWO graphic depicting this for
late week.

The good news is this heat looks to be short lived thanks to a
tropical system in the western Atlantic. Thanking a tropical system?
Yes. We will not be impacted by this system and it will aid in
breaking the heat, especially in the east, and will usher drier air
into the area. There is still uncertainty regarding how far offshore
in the Atlantic the tropical system will be at this time, drier
conditions overall look to set up over the area towards the back end
of the period. /SAS/

&&

.AVIATION...
(06Z TAFS)
Issued at 105 AM CDT Wed Aug 13 2025

MVFR cigs wl develop in the east and prevail until after 15Z
before improving. Elsewhere, VFR conditions wl prevail until after
18Z when scattered to numerous TSRA wl develop with the greatest
coverage in the east. The TSRA wl gradually dissipate after 00Z
Thu. /22/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       74  94  74  94 /  20  70  20  50
Meridian      73  93  73  94 /  20  70  20  50
Vicksburg     75  94  75  95 /  30  70  20  50
Hattiesburg   76  95  75  97 /  30  60  20  40
Natchez       73  93  74  95 /  30  60  20  40
Greenville    74  93  74  94 /  20  50  20  40
Greenwood     74  95  74  95 /  20  60  20  40

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...Heat Advisory from 10 AM this morning to 7 PM CDT this evening
     for MSZ018-019-025-034-035-040-041-047-053-059-060.

LA...Heat Advisory from 10 AM this morning to 7 PM CDT this evening
     for LAZ007>009-015-016-023>026.

AR...Heat Advisory from 10 AM this morning to 7 PM CDT this evening
     for ARZ074-075.

&&

$$

19/SAS/EC/22