Redstone Arsenal, Alabama Weather Forecast Discussion

728
FXUS64 KHUN 181039
AFDHUN
Area Forecast Discussion
National Weather Service Huntsville AL
539 AM CDT Thu Sep 18 2025
...New AVIATION...
.NEAR TERM...
(Today)
Issued at 307 AM CDT Thu Sep 18 2025
A clear to mostly clear sky and a calm wind has led to radiation
fog in some area river valleys this morning. The fog has become
locally dense along the TN River in Jackson County. Expect patchy
fog to continue to develop, especially in river valleys and in
areas that received rainfall on Wednesday. The fog will dissipate
by mid morning and expect a sunny and hot day otherwise with highs
in the upper 80s to lower 90s.
Previous Discussion...
Issued at 1008 PM CDT Wed Sep 17 2025
An upper level system earlier moved southward across the Tennessee
Valley. The passage of that system, with strong daytime heating
and sufficient moisture and resultant instability produced showers
and thunderstorm that affected some of the area. Some those storms
were strong to severe, producing hail and damaging wind gusts.
Remaining convection has for the most part moved well south of
this area on a weakening trend. Mid evening temperatures have
cooled into the upper 60s to lower 70s with light winds.
Weak high pressure over the Ohio Valley will otherwise help
control the area`s sensible weather. A regional satellite view
indicated clear skies to our north, which should continue as
slightly drier air to our north filters southward. Low
temperatures by daybreak Thursday should range in the 60s. The
clear skies, light winds, and residual moisture from recent
rainfall will set the stage for fog potentially becoming an issue
as we go into the late night. MOS output showing fog formation to
some extent, with some of potentially dense. We will keep a
mention of this going for the late evening update.
Daytime heating and resultant mixing will help dissipate any fog
that forms after sunrise. With slightly drier air more in place, a
mostly sunny day is expected. Despite a weak NW flow, high
temperatures should rise into the mid/upper 80s our higher terrain
and eastern areas, with low/mid 90s over NW Alabama.
&&
.SHORT TERM...
(Thursday night through Saturday)
Issued at 1008 PM CDT Wed Sep 17 2025
Dry conditions should continue Thursday night into Friday night
with lows both nights in the low/mid 60s. Under mostly sunny
skies, highs on Friday should rise into the upper 80s east to
low/mid 90s west with light NE winds.
Another upper system this time nearing from the west will bring
somewhat more upper support, and bring lower end chances of
showers and thunderstorms on Saturday. The older model runs were
limiting the showers over NW Alabama, but some of the newer
intermediate guidance was suggesting somewhat more coverage.
Despite more clouds and rain chances, high temperatures should
rise into the upper 80s to lower 90s.
&&
.LONG TERM...
(Saturday night through Wednesday)
Issued at 1008 PM CDT Wed Sep 17 2025
The longer term was suggesting that mean troughing should become
established across the eastern half of the North American domain.
In this pattern, the stronger dynamics and surface frontal
boundaries will remain well to our north and west. Thus dry and
unseasonably warm conditions should continue as we go into the
next week. But as upper level systems begin to move closer, rain
chances will return during portions of the new work week.
Low temperatures Saturday night again will be in the 60s. Highs
temperatures Sunday (the last full day of summer) will feature
highs from the mid 80s east to lower 90s west. Previously noted
upper support should arrive and bring lower end rain chances on
Monday. Monday which also the first day of Autumn (which begins
around 119 PM). More unsettled weather is expected next Tue/Wed
with low, daily chances of showers and thunderstorms mainly in the
afternoon to early evening. Low temperatures should range in the
60s, and highs from the lower 80s east to upper 80s east.
&&
.AVIATION...
(12Z TAFS)
Issued at 539 AM CDT Thu Sep 18 2025
Patchy BR and FG will dissipate by 13-14Z. A few locations will
experience visibility down to 1/4SM in some river valleys and
near bodies of water. VFR conditions are forecast during the
remainder of the period.
&&
.HUN WATCHES/WARNINGS/ADVISORIES...
AL...None.
TN...None.
&&
$$
NEAR TERM...17
SHORT TERM....RSB
LONG TERM....RSB
AVIATION...17

NWS HUN Office Area Forecast Discussion