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

(Rest of Today and Tonight) Issued at 952 AM CDT Fri Aug 7 2026

A similar setup today as the Tennessee Valley remains situated between an upper level trough over the Great Lakes region and high pressure centered near the Mid-Atlantic. Weak sfc southerly flow will once again warm temperatures up into the upper 80s to lower 90s. Diurnally driven storms will once again develop, likely initially focused in our higher terrain in NE AL before spreading westward. SBCAPE this afternoon increases between 1500-2000 J/kg, but shear is weak. Forecast soundings have between 750-1000 J/kg of DCAPE and pwats are between 1.75-2 inches. Therefore, we expect the thunderstorms to be sub-severe, but cannot rule out a few strong storms capable of gusty winds and locally heavy rainfall.

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 the fog to become widespread.

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

(18Z TAFS) Issued at 1140 AM CDT Fri Aug 7 2026

Light winds and VFR conditions are forecast through the TAF period. There is a low chance for afternoon thunderstorms that will lower ceilings and visibilities at times. Coverage is a bit uncertain and storms may miss the terminals.

HUN WATCHES/WARNINGS/ADVISORIES

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