textproduct: Huntsville

KEY MESSAGES

Updated at 952 PM CDT Mon Aug 17 2026

- Dry conditions are forecast through mid week before low to medium rain chances return Thursday into Friday.

- Heat is forecast to decrease from Moderate risk (level 2 of 4) to Minor risk (level 1 of 4) through this week.

NEAR TERM

(Rest of tonight and Tuesday) Issued at 952 PM CDT Mon Aug 17 2026

A cold front has pushed southeastward into portions of NW AL and southern middle TN this evening and is forecast to continue to shift southward overnight. Ahead of this, numerous strong to severe storms were observed and have weakened considerably the past hour with the loss of support from diurnal heating. A few showers/thunderstorms are lingering in the area, however, CAMs have us drying out overnight in the wake of the front and dry conditions should continue through Tuesday. Post-frontal temperatures will be relatively cooler compared to what has been observed the past several days, with highs forecast to reach the upper 80s to lower 90s Tuesday afternoon accompanied by heat indices in the mid 90s. Therefore, the Heat Advisory was allowed to expire this evening at 7 PM without extension. Lingering cloud cover should deter fog development tonight, however, if any clearing occurs toward the mid morning hours then fog will likely occur. If fog is realized, it should dissipate shortly after sunrise.

SHORT TERM

(Tuesday night through Thursday) Issued at 952 PM CDT Mon Aug 17 2026

An upper level ridge should remain placed over the SW U.S. into the southern Plains through the end of the work week. An area of low pressure will also slowly shift eastward along the SE U.S. Between these two systems, the TN Valley will be influenced by sfc high pressure following the aforementioned cold front through mid week. This will result in dry conditions with highs reaching the 90s and heat indices up to around 100 degrees. A few spots could reach 105 degrees, however, this should be very localized and not widespread enough to warrant any heat products at this time.

LONG TERM

(Thursday night through Monday) Issued at 952 PM CDT Mon Aug 17 2026

Towards the end of the work week, we will be monitoring a series of shortwaves set to push southeast into the Tennessee Valley. As a result, low to medium chances of rainfall return Thursday into Friday. A frontal boundary should shift southward through the area by Friday night, bringing dry conditions behind it through the weekend. Highs will be consistent through the long term period, with highs in the upper 80s to mid 90s accompanied by heat indices in the upper 90s to around 104 degrees. While no heat products are on the table at this time, we continue to encourage everyone to remain hydrated and practice heat safety to avoid heat related illness.

AVIATION

(06Z TAFS) Issued at 1049 PM CDT Mon Aug 17 2026

Afternoon/early evening shower and thunderstorm activity related to a prefrontal sfc trough has now spread southeastward and out of northern AL. Although an additional small cluster of storms may evolve across AR during the early morning hours and track east- southeastward, current thinking is that this will dissipate across northern MS after sunrise as a drier airmass is advected southward with the true synoptic cold front. Thus, we will maintain VFR conds in the TAFs, with light NNE winds that will diurnally back to NNW during the day tomorrow. In spite of widespread wetting rainfall earlier this evening, abundant mid- level cloud cover appears as if it will hinder development of BR/FG during the early morning hours on Tuesday.

HUN WATCHES/WARNINGS/ADVISORIES

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