Forecast Discussion


410
FXUS64 KMEG 270447
AFDMEG

Area Forecast Discussion
National Weather Service Memphis TN
1147 PM CDT Fri Jul 26 2024

...New AVIATION...

.UPDATE...
Issued at 927 PM CDT Fri Jul 26 2024

00Z upper air analysis depicts a mid-level longwave trough axis
extending from New England to the Hill Country of Texas and
bisecting the Mid-South. Regional WSR-88D radar trends show a weak
remnant MCV centered near southeast Poinsett County. This has
allowed rain showers to persist across portions of the Mid-South
into mid-evening. Latest 00Z short-term model trends indicate
another shortwave trough will move into the area towards sunrise
Saturday. Will make some modifications to overnight lows and rain
chances based on short-term trends. Otherwise, the remainder of
the forecast is in good shape overall.

CJC

&&

.SYNOPSIS...
Issued at 318 PM CDT Fri Jul 26 2024

Wet and unsettled conditions with below normal temperatures will
continue through the weekend. The pattern begins to shift next
week as a ridge builds in, increasing temperatures and decreasing
rain chances.

&&

.DISCUSSION...
(This evening through next Thursday)
Issued at 318 PM CDT Fri Jul 26 2024

An MCV is currently churning over west Tennessee, giving way to
scattered showers and thunderstorms. The latest CAMs suggest a
very similar setup early tomorrow morning with yet another MCV
surging up from the Gulf Coast. Expect a persistence forecast with
below normal temperatures and scattered showers/thunderstorms
throughout the day tomorrow. This setup is also supportive of cold
air funnels, which have been reported widely with the showers we
saw today. Patchy fog development is certainly possible areawide
as well due to the localized wind minimum combined with a
plethora of excess moisture.

Unfortunately, the pattern begins to shift hotter and drier early
next week. An upper level ridge will begin to build over the
south-central CONUS next week, nudging temperatures back into
uncomfortably hot territory. The ridge`s influence doesn`t quite
extend east of the Mississippi River by Monday, so this will be a
warming trend from west to east. NBM probabilities depict a high
chance (>70%) of temperatures above 90 degrees areawide starting
on Tuesday. Forecast surface analyses suggest a broad surface
ridge setting up over the central Gulf Coast midweek as well. This
dominant ridging at all levels unmistakably spells out hot and
humid conditions for the Mid-South. We`ll certainly need heat
headlines, maybe as early as Monday but more likely by Tuesday.

CAD

&&

.AVIATION...
(06Z TAFS)
Issued at 1142 PM CDT Fri Jul 26 2024

An upper level low pressure system will keep scattered SHRAs
near all terminals through much of the period. A more robust
upper level wave will bring higher chances of prevailing SHRAs to
MEM and JBR overnight through Saturday morning. TSRAs will be
possible by late afternoon, but should be widely scattered in
coverage. Occasional MVFR CIGs and VSBYs will accompany +SHRAs.
Winds will remain 7 knots or less and mainly from the south.

AC3

&&

.MEG WATCHES/WARNINGS/ADVISORIES...
AR...None.
MO...None.
MS...None.
TN...None.
&&

$$

PUBLIC FORECAST...CAD
AVIATION...AC3