textproduct: Huntsville

KEY MESSAGES

Updated at 952 AM CDT Fri Aug 7 2026

- Low to medium chances for showers and storms, mainly in the afternoon and early evening, continue through next week. - Moderate (level 2 out of 4) NWS HeatRisk for northern Alabama and southern middle Tennessee through the weekend increases to Major (level 3 out of 4) early next week for portions of the area.

NEAR TERM

(Tonight) Issued at 233 PM CDT Fri Aug 7 2026

Showers and thunderstorms over the last hour have developed across NE AL and along the TN River. SPC mesoanalysis shows between 2000-2500 J/kg of SBCAPE across the area and as a result a few storms have become strong with gusty winds being the main concern. The bigger threat may be locally heavy rainfall causing flooding issues as storm motion is very slow. Additional strong storms are likely to develop as outflow boundaries initiate new convection this afternoon.

Showers and storms will gradually come to an end after sunset with the loss of heating. Tranquil conditions are forecast overnight with lows only dropping down into the low 70s. There is a low chance of patchy fog late tonight into early tomorrow morning, especially in places that get any rain this afternoon. However, based on previous nights of similar conditions, we do not expect

SHORT TERM

(Saturday through Sunday) Issued at 952 AM CDT Fri Aug 7 2026

Heading into the weekend the local forecast pattern remains the same as the upper level trough axis remains entrenched just to our north. Therefore, expect hot and humid conditions and daily chances for diurnally driven showers and thunderstorms. The main threats will once again be gusty winds and locally heavy rainfall that could lead to ponding on area roadways. Overall, afternoon highs will warm into the upper 80s to lower 90s this weekend with heat indices in the upper 90s to lower 100s. Fog chances Saturday night remain low, but will largely be confined to where the rain occurs during the day.

LONG TERM

(Sunday night through Thursday) Issued at 826 PM CDT Thu Aug 6 2026

The broad area of high pressure will flatten during the early to middle part of next week and potentially begin to retrograde back to the west by Wednesday and Thursday. Regardless, the forecast will remain the same for much of the week ahead, very warm and humid with daily chances for diurnally driven convection in the afternoon (thanks to the tropical air mass in place underneath this ridge). As a result, heat/humidity and the threat for thunderstorms will remain at the forefront of our messaging. Each day next week, highs will peak in the upper 80s to lower 90s (with peak afternoon heat index values between 100 to 105 degrees) in most locations. NWS Heat Risk highlights a moderate (Level 2/4) threat level in most locations Monday through Thursday, with a few of the metro areas (MSL, DCU, HSV) in the Major (Level 3/4) category.

Coinciding with these heat concerns, the atmosphere will remain primed for low to medium (20-50%) chances for afternoon showers and thunderstorms. This activity will be capable of producing locally heavy downpours and potentially localized gusty winds with the strongest activity.

AVIATION

(00Z TAFS) Issued at 633 PM CDT Fri Aug 7 2026

A large cluster of showers and thunderstorms continues to backbuild just north of the KMSL terminal at this time. Thus, a VCTS was included predominantly at KMSL with a tempo between 00Z and 01Z for a possible TSRA impacting the that terminal. This could bring MVFR or lower CIGS or VSBYS to that terminal. Further east, activity has pushes well southwest of the KHSV terminal. Predominant VFR conditions were kept there. Expect this activity near the KMSL terminals to dissipate around 1Z. Then light and variable winds with clearing skies are expected. This should be a decent setup for fog formation overnight. Thus, have included a tempo group at both terminals for MVFR VSBY reductions due to fog. This may have to be revised lower if denser fog develops. Expect VFR conditions to return after 13Z (maybe a hour or two layer if denser fog forms). Then PROB30 groups (mainly 18Z to 23Z) for TSRA activity were included in the afternoon at both terminals for possible -TSRA development. During this period, MVFR or lower CIGS/VSBYS could occur.

HUN WATCHES/WARNINGS/ADVISORIES

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