textproduct: Huntsville

KEY MESSAGES

Updated at 953 PM CDT Tue Aug 25 2026

- Low to medium chances for showers and thunderstorms from Wednesday-Friday. The primary hazards will be locally excessive rain and lightning. There is a low chance for a few strong thunderstorms with gusty winds.

- Mostly dry weather forecast this weekend along with increasing temperatures with heat indices reaching around 100 degrees.

NEAR TERM

(Rest of tonight through Wednesday Night) Issued at 953 PM CDT Tue Aug 25 2026

Northerly flow has kept a drier airmass in the region. Dew points have dropped into the middle to upper 50s in southern TN, with lower to middle 60s over north AL. Later tonight, mid and high clouds will increase as a shortwave drops southeast into western KY and TN. Showers and thunderstorms are forecast to develop along the lower MS River valley on Wednesday, with an eastward extension of these clipping far northwest AL, mainly during the afternoon and early evening hours. At this point, the risk of severe storms is low, but CAPE values of 1000-2000 j/kg and 6km bulk shear of 25-30kt will be enough to support a few and will continue to monitor these trends. Low chances of thunderstorms will persist into Wednesday night, but should decrease in intensity with loss of heating. After lows in the upper 60s to around 70 tonight, highs will climb into the lower 90s in valley areas on Wednesday (upper 80s atop the Cumberland Plateau, Sand and Lookout Mtns).

SHORT TERM

(Thursday through Friday) Issued at 953 PM CDT Tue Aug 25 2026

Additional weak shortwaves in the northwest flow in mid to upper levels will bring medium chances of showers and thunderstorms beginning early Thursday. These last into the evening hours before diminishing again with loss of heating. A weak cold front will slowly drop southeast on Friday, producing redevelopment of thunderstorms on the front. The greatest chances will be in our southeast counties, but the eventual position of the front Friday will dictate this. Highs Thursday and Friday should be in the upper 80s to around 90 in valleys and middle 80s atop the higher plateau areas.

LONG TERM

(Friday night through Tuesday) Issued at 953 PM CDT Tue Aug 25 2026

The aforementioned frontal boundary should be to our south by Friday night into early Saturday, allowing mostly dry conditions to take over the area. However, as sfc high pressure resides over the Appalachians and the boundary stalls to our south, continued low chances for shower/thunderstorm development will exist in the eastern zones of our CWA through the weekend. This is low confidence due to model uncertainty in the exact evolution of the frontal boundary as it shifts south of the area, however, trends have continued to stall it before gradually lifting it slightly back northeastward through the latter part of the weekend. Have continued with blended guidance for now. Otherwise, high temperatures are forecast to reach the low to mid 90s with heat indices up to around 100 degrees as an upper level ridge continues to influence the region from the west. If you have outdoor plans, be sure to seek shade and stay hydrated to avoid heat illness.

AVIATION

(00Z TAFS) Issued at 442 PM CDT Tue Aug 25 2026

VFR flight weather conditions are forecast. There is a very low chance of TSRA in far northwest AL on Wednesday after 12Z, but confidence is too low to include at KMSL.

HUN WATCHES/WARNINGS/ADVISORIES

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