349
FXUS64 KHUN 310458
AFDHUN

Area Forecast Discussion
National Weather Service Huntsville AL
1158 PM CDT Sun Aug 30 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 755 PM CDT Sun Aug 30 2026

 - Moderate to Major Heat Risk is forecast Monday through Sunday
   with afternoon heat indices rising between 100-105 degrees.

&&

.NEAR TERM...
(Rest of tonight and Monday)
Issued at 755 PM CDT Sun Aug 30 2026

Sfc high pressure centered over the Appalachians will continue
the tranquil weather pattern overnight. Ideal radiational cooling
conditions with light winds and clear skies is forecast to drop
temperatures down into the upper 60s in the higher terrain and
lower 70s elsewhere. As we start the work week, upper level
ridging over the central US begins to shift eastward. Monday will
be the start of a prolonged heat wave with temperatures warming
into the low to mid 90s. Afternoon heat indices will top out in
the upper 90s to around 104F with the highest values west of
I-65.

&&

.SHORT TERM...
(Monday night through Wednesday Night)
Issued at 755 PM CDT Sun Aug 30 2026

The mid/upper level ridge amplifies and shifts further east heading
into the middle of the week. Subsidence under the ridge will keep
cloud cover limited with dry weather continuing through the end of
the short term period. Expect highs on Tuesday and Wednesday to
rise into the mid to upper 90s with heat index values between
100-105 degrees. With the recent dry conditions, dewpoints should
mix out a bit each afternoon which should keep us below advisory
criteria. Regardless, even if we don`t exceed advisory criteria
the heat will be dangerous as WBGT rises between 87-90 degrees and
Moderate to Major heat risk is forecast. Not much relief is
expected overnight as lows only drop down into the lower 70s.

&&

.LONG TERM...
(Thursday through Sunday)
Issued at 755 PM CDT Sun Aug 30 2026

The long term forecast will offer more of the same. At the surface,
high pressure will dominate, keeping temps in the mid to high 90s
through the weekend. With ridging remaining in place in the mid
levels too, our saving grace will be the fact that our dew points
look to remain in the high 60s to low 70s. This will limit how high
our heat indices can reach with uncertainty remaining on if we will
meet heat advisory criteria. Inversely, since we will be slightly
drier, there is some concern for over preforming on current high
temperature forecasts. Some deterministic models flirt with triple
digit highs this weekend. While we have low confidence in this
occurring, it will be a trend we keep an eye on. From Sunday forward
the forecast becomes somewhat murky. Models have picked up on a
passing cold front yet are in disagreement on when and if it comes
through. If the cold front does make it through on Sunday as the NBM
suggest, highs will drop back to the low 90s. If the front stalls or
dampens before it gets here, highs will likely remain in the high 90s
through the start of the next work week. make sure to continue to
practice proper heat safety and check back for updates.

&&

.AVIATION...
(06Z TAFS)
Issued at 1158 PM CDT Sun Aug 30 2026

VFR conditions are forecast through the TAF period with clear
skies and light/var winds.

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...None.
TN...None.
&&

$$

NEAR TERM...GH
SHORT TERM....GH
LONG TERM....RAD
AVIATION...25