textproduct: Huntsville

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

(00Z TAFS) Issued at 550 PM CDT Sun Aug 30 2026

VFR conditions with light winds is forecast through the period.

HUN WATCHES/WARNINGS/ADVISORIES

AL...None. TN...None.