Marrero, Louisianna 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

280
FXUS64 KLIX 090823
AFDLIX

Area Forecast Discussion
National Weather Service New Orleans LA
323 AM CDT Wed Apr 9 2025

...New SHORT TERM, LONG TERM, MARINE...

.SHORT TERM...
(Today through Thursday)
Issued at 315 AM CDT Wed Apr 9 2025

Upper trough now well to the east, from New England to the eastern
Gulf, with upper ridging over the Intermountain West. At the
surface, high pressure extended from the eastern Great Lakes to
the western Gulf. Clear skies across the area, with temperatures
mainly ranging from the upper 40s to mid 50s, although the warmer
waters of Lake Pontchartrain adjacent to Lakefront Airport are
holding temperatures there in the mid 60s.

The northern end of the surface high will shift off the New
England coast by Thursday evening, while the southern end remains
anchored over the Gulf. A strong shortwave will be moving through
the middle Mississippi River Valley Thursday afternoon, with the
associated cold front entering northwest Louisiana at that time.
Low level moisture return in advance of the front will be almost
non-existent, with precipitable water values near 0.80 inch, which
is below the daily mean for early April. May not even see a cloud,
let alone rain, Thursday afternoon.

Expect high temperatures in the mid and upper 70s today. Forecast
soundings would indicate high temperatures tomorrow should be
about 3-5F warmer, which would put a few locations in the lower
80s. Overnight lows tonight from the upper 40s to mid 50s away
from marine influences.

&&

.LONG TERM...
(Thursday night through Tuesday)
Issued at 315 AM CDT Wed Apr 9 2025

The upper shortwave will have reached the base of the trough over
the Carolinas and Georgia Friday morning. The associated cold
front will move rapidly through the local area into the coastal
waters overnight Thursday night. An isolated shower or rumble of
thunder couldn`t entirely be ruled out over southern Mississippi
after midnight Thursday night, but the probability of that
occurring at a specific location appears to be less than 15
percent, and won`t be mentioned in the forecast. Any cloud cover
associated with the front might not be around much more than 3-6
hours Thursday night, and probably only east of Interstate 55.

The upper shortwave will close off a mid level low near Washington
DC by Friday evening before it lifts northeastward into the
Canadian Maritime Provinces Sunday. Upper ridging will move across
the northern Gulf Coast States over the weekend as troughing
develops over the Rockies. That trough will move eastward early
next week, and likely extend from Quebec to the middle Mississippi
River Valley by Tuesday. There are some differences between the
operational runs of the GFS and ECMWF early next week with the GFS
bringing one shortwave through the base of the trough, while the
ECMWF brings a second through it, slowing down trough passage as
well as the associated cold front. Whenever the passage does
occur, that could be our next chance, remote as it might be, of
measurable precipitation. And if it does measure, it probably
won`t be much.

The frontal passage Thursday night/Friday morning will reinforce
the dry air, with it being most noticeable in overnight lows
Friday night and Saturday night, when readings could fall back
into the 40s across most of the area. Highs will generally be in
the 70s Friday through the weekend, with Saturday being the
coolest of the 3. Highs will warm into the lower 80s away from the
coast for Monday and possibly Tuesday before a brief cooloff at
midweek next week.

&&

.AVIATION...
(06Z TAFS)
Issued at 1158 PM CDT Tue Apr 8 2025

VFR conditions persist at all terminals through the forecast
period. Winds remain light and variable.

&&

.MARINE...
Issued at 315 AM CDT Wed Apr 9 2025

A couple of comparatively quiet days for marine operations as high
pressure moves across the area today and Thursday. A cold frontal
passage on Friday will bring a brief increase in winds and seas
Friday afternoon into Saturday, which will likely necessitate
Small Craft Exercise Caution headlines, if not Small Craft
Advisories. Benign conditions return for the second half of the
weekend and probably Monday.

&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  75  51  81  54 /   0   0   0   0
BTR  77  53  81  57 /   0   0   0   0
ASD  77  52  81  58 /   0   0   0   0
MSY  75  57  80  61 /   0   0   0   0
GPT  75  55  78  59 /   0   0   0   0
PQL  75  50  78  57 /   0   0   0   0

&&

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

$$

SHORT TERM...RW
LONG TERM....RW
AVIATION...HL
MARINE...RW