textproduct: Huntsville

KEY MESSAGES

Updated at 1008 AM CDT Sun Aug 23 2026

- There are low to medium chances of thunderstorms for much of next week. However, timing and impact confidence remains low at this time.

NEAR TERM

(Tonight) Issued at 153 PM CDT Sun Aug 23 2026

No changes from previous forecast for tonight. Under sunny skies, temps have warmed up into the upper 80s at this hour with light north/northwesterly winds. Will see an increase of mid to upper level clouds this evening and tonight, otherwise lows will reach the low to mid 60s.

SHORT TERM

(Monday through Wednesday) Issued at 1008 AM CDT Sun Aug 23 2026

We will start out the week with an upper level low centered in Quebec, a ridge centered in the southern Rockies but amplified up into the Northern Plains and another upper level low in Saskatchewan. Sfc high pressure will continue to push southeastward into the region and keep an MCS dropping out of the Central Plains on Monday to our west. The TN Valley will have a much needed break from the heat and humidity on Monday as daytime highs reach the upper 80s and dewpoints only in the 50s-60s! On Tuesday, a sfc low in the Southern Plains will help return moisture to the region and lift a warm front northward through the day. Could see a few showers/storms return to the far west portion of the CWA on Tuesday otherwise it will be moreso Tuesday night for everyone. Still stuck in this northwesterly flow pattern, a disturbance will slide into the TN Valley on Wednesday, increasing POPs from low chances (20-40%) during the day to to medium chances (50-60%) by Wednesday night. Daytime highs will be in the upper 80s to lower 90s on both Tuesday and Wednesday.

LONG TERM

(Tuesday night through Saturday) Issued at 641 PM CDT Sat Aug 22 2026

We will continue to be in a northwest flow regime aloft for most of the long term period. However, by Saturday, this pattern begins to break down as the upper trough to the north/northeast flattens and the upper ridge over the Desert Southwest flattens as well and pushes farther east into the ArkLaTex. A lingering surface boundary will also persist over the Southeast into Thursday before what looks like a reinforcing cold front swings through. By late week and into the first part of next weekend high pressure builds over the Appalachians and Ohio Valley.

Overall, highs in the upper 80s to lower 90s with lows in the mid 60s to lower 70s will be common through the period. In addition, the above pattern will lead to daily chances of showers and storms from Tuesday through Thursday at least. Expecting lower chances come Friday/Saturday. The best chances look to be during the afternoon and evening hours, during peak heating when storms can take advantage of the greater thermodynamics in place. Ample instability in addition to bulk shear between 20-30 knots, 0-3km lapse rates between 7-8 deg C/km, along with DCAPE around or above 1000 J/kg, will warrant us keeping an eye on the forecast for at least strong to severe downburst potential Wednesday and Thursday. As has been the case recently, the main hazards are likely to be damaging winds, frequent lightning, and perhaps some hail (but freezing levels may be too high). As for heavy rain and flooding concerns, this will need to be monitored as well, since most PWATS are generally between 1.7-2.0 inches Tuesday through Thursday. These values are between the 75th and 90th percentiles when compared to BMX Sounding Climatology, which means that showers and storms will be efficient rainfall producers. Stay weather aware especially if you work outside or have outdoor activities and check back for forecast updates!

AVIATION

(18Z TAFS) Issued at 1215 PM CDT Sun Aug 23 2026

VFR conditions will prevail through the TAF period for KHSV and KMSL. This evening there will be an increase in upper level clouds then after midnight an increase in mid level clouds that should become broken in coverage, but remain VFR. Winds will range from 340-020 at 5-10 kts today, then veer after sunset to the NE but remain light.

HUN WATCHES/WARNINGS/ADVISORIES

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