D'Iberville, Mississippi 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

970
FXUS64 KLIX 292336
AFDLIX

Area Forecast Discussion
National Weather Service New Orleans LA
636 PM CDT Mon Jun 29 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 632 PM CDT Mon Jun 29 2026

- Heat index values will approach advisory criteria mainly
  tomorrow (Tuesday), and mainly across the north shore and
  Mississippi Coast. Those with outdoor plans or work should take
  precautions to avoid heat-releated illnesses. Drink plenty of
  water, wear light-weight and loose-fitting clothing, and take
  breaks in the shade or air conditioning during the afternoon
  hours.

- Scattered to numerous showers and storms return to the area
  beginning late Tuesday, with the highest chances on Wednesday.
  While the threat of widespread severe weather and heavy rain
  will be low, a few storms each day could become strong,
  producing gusty winds and/or locally heavy rain.

&&

.SHORT TERM...
(Now through Wednesday)
Issued at 105 PM CDT Mon Jun 29 2026

Upper level ridging will generally remain in place across the
eastern CONUS through the short term, with the axis extending from
Appalachia through eastern Texas. Expect Tuesday to be another
warmer than normal day with afternoon highs forecast in the mid to
upper 90s. Latest forecast calls for some pockets of heat index
values in the 108-109 degree range, which is just above heat
advisory criteria - mainly across portions of the north shore and
Mississippi gulf coast. However, given the sparse and borderline
nature, will hold off on issuing with this package. If there is
any upward tick in either temperatures or dewpoints with the next
forecast package, a head advisory may be necessary and this will
be reevaluated with the evening/overnight update. A few very
isolated showers and storms could develop Tuesday afternoon as
moisture begins to increase, but overall rain chances will remain
generally 10 percent or lower for most places. The main exception
will be for areas near and east of the I-59 corridor where sea
breeze influences may be more well developed and could fire off a
few storms.

The ridge will shift slightly northward as a weak easterly wave
undercuts it and moves across the northern Gulf late
Tuesday into Wednesday. This wave will bring increased moisture
and provide a focus for scattered to numerous showers and storms
to the area. The main thunderstorm threat from this activity will
be potential for a few storms producing locally heavy rain. Model
forecast soundings indicate precipitable water values of 2-2.25
inches which is above the 90th percentile for this time of year.
This will allow for some storms to be efficient rain producers.
While isolated ponding of water in low lying and poor drainage
areas will be possible, storm motions of 15-20 mph should
preclude any significant flooding threats.

&&

.LONG TERM...
(Thursday through Sunday)
Issued at 105 PM CDT Mon Jun 29 2026

As the easterly wave departs the local area, expect a return to a
typical summertime pattern to end the work week and persist
through the weekend. Mid level drying as a result of high
pressure becoming more dominant again will cause precipitable
water to drop back to near normal for this time of year and we
should see diurnally driven convection each afternoon, with
initiation beginning mainly along sea/lake breeze boundaries.
Additional convection will then spread along resultant outflow
boundaries. As is typical in the summer months, an isolated
pulse severe storm or two could develop each afternoon with the
primary threat being damaging wind gusts.

Expect temperatures to remain at least a few degrees above normal
for most locations, with morning lows in the mid to upper 70s and
highs in the low to mid 90s.

&&

.AVIATION...
(00Z TAFS)
Issued at 632 PM CDT Mon Jun 29 2026

VFR conditions prevailing at terminals with light, variable winds.
Most of the forecast period will remain VFR, but expect SH/TS
activity to increase beginning around 2100-0000 UTC east of the
I-55 corridor particularly for ASD, GPT, NEW, and MSY. PROB30s for
TSRA impacts have been added at these sites and further additions
are probable for HDC, MCB, and potentially BTR and HUM as
convective activity moves from east to west after 0000 UTC Tuesday
evening. Confidence is lower in TSRA impacts persisting much
beyond 0400 UTC as daytime heating wanes and the atmosphere
gradually stabilizes.

&&

.MARINE...
Issued at 105 PM CDT Mon Jun 29 2026

Aside from a weak easterly wave moving through the northern Gulf
midweek, the pattern will be dominated by high pressure influences.
Winds will generally be 10kts or less and direction will vary
through midweek, becoming more predominantly southerly as high
pressure builds over the eastern Gulf late in the week. Generally
isolated to scattered showers and storms can be expected each
day, with potential for more numerous/widespread convection on
Wednesday associated with the easterly wave. A few stronger storms
could produce gusty winds and/or waterspouts, and locally
hazardous seas during the second half of the work week.

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...None.
GM...None.
MS...None.
GM...None.
&&

$$

SHORT TERM...DM
LONG TERM....DM
AVIATION...TJS
MARINE...DM