textproduct: Huntsville

KEY MESSAGES

Updated at 932 PM CDT Fri May 29 2026

- A medium-high (50-80%) coverage of showers and thunderstorms is expected from tonight into Saturday. Lightning and heavy downpours will be the main impacts.

- Coverage of showers and storms will begin to decrease on Sunday and Monday (becoming focused across northern/western areas), with dry and mild conditions expected Tuesday-Thursday.

NEAR TERM

(Rest of tonight and Saturday) Issued at 932 PM CDT Fri May 29 2026

Clusters of showers and thunderstorms will continue over the next 3-6 hours, aided by some appreciable instability and an approaching mid-level trough. Given the deep, tropical moisture in place, locally heavy rainfall/downpours will be the biggest concern with these storms. This activity will gradually be dissipating late tonight into a few pockets of light rain showers as the air mass become more worked over and a stable boundary layer tries to develop. Low stratus will build in during the predawn hours and with a weak inversion in place, persist through the mid to late morning hours. However, guidance again hints at some breaks in the cloud cover again developing by midday and into the afternoon. This should allow for enough heating to generate some diurnally driven pulse convection (60-80%) Saturday afternoon/evening. Localized heavy rainfall/isolated flooding concerns will be the primary hazard with these storms.

SHORT TERM

(Saturday night through Monday) Issued at 932 PM CDT Fri May 29 2026

A slightly drier air mass may finally get advected into the Tennessee Valley Saturday night, giving us a temporary reprieve in convection overnight. However, medium chances (40-60%) of showers and thunderstorms along some residual outflow boundaries are likely to again develop during the afternoon/evening hours on Sunday, before dissipating again at sunset. With a dry airmass being reinforced across the region Sunday night, temperatures may fall into the upper 50s early Monday morning, thanks in part to some partial clearing and radiational cooling. The Tennessee Valley will remain wedged between a trough over the Northeast and a stronger ridge building in over the Mid South. One final shortwave will clip the area on Monday, resulting in some low to medium (20-40%) chances of afternoon convection once again. However, most locations will remain dry and the main story will be more sunshine and warmer temperatures in the mid to upper 80s.

LONG TERM

(Monday night through Friday) Issued at 932 PM CDT Fri May 29 2026

A much awaited pattern change continues to look likely in the long term period, as an upper low slides east off the Atlantic Coast and high pressure expands west over the OH Valley into the Southeast. Northerly flow aloft combined with a drier continental airmass source will keep temperatures on the cooler side of seasonal norms, topping out in the lower 80s each day with lows in the low to mid 60s. Subsidence will keep skies much clearer than we saw this week, with PoPs below 15-20% each day. There will be little change in the overall pattern through the end of the work week, but it does look like moisture will start to increase as low level wind fields veer toward the south as upper ridging begins to build over the Gulf.

AVIATION

(00Z TAFS) Issued at 556 PM CDT Fri May 29 2026

Clusters of SHRA/TSRA may move through the region this evening, promoting a TEMPO at both terminals due to localized MVFR conditions. An AWW and/or amendment could be needed should a storm impact either terminal. After Midnight, MVFR/IFR ceilings from low stratus will develop, before clouds begin to break up by late morning. Additional -SHRA may develop during the afternoon on Saturday late in the period.

HUN WATCHES/WARNINGS/ADVISORIES

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