textproduct: Huntsville

KEY MESSAGES

Updated at 840 AM CDT Mon Aug 24 2026

- Low to medium chances of showers and thunderstorms exists during the middle part of this week. The primary hazards will be locally excessive rain and lightning. There is a low chance of few strong storms with gusty winds as well.

NEAR TERM

(Rest of Today and Tonight) Issued at 840 AM CDT Mon Aug 24 2026

The Tennessee Valley will remain under the influence of a broad upper trough over the Northeastern United States which is helping filter in a relatively drier air mass as evidenced by dewpoints in the mid 60s this morning. Having said that, it's still August and with ample heating again today (thanks to a frontal boundary remaining stalled just to our south and west), expect temperatures to climb into the upper 80s to lower 90s by this afternoon. However, with drier air filtering into, am forecasting dewpoints to lower into the upper 50s to lower 60s, minimizing (but not completely eliminating for sensitive groups) heat impacts across the region today as NWS Heat Risk highlights a Level 1 of 4. Any cloud cover that does develop should dissipate overnight. With mostly clear and calm conditions allowing for good radiational cooling and a fairly comfortable night with lows in the low to mid 60s.

SHORT TERM

(Tuesday through Wednesday) Issued at 840 AM CDT Mon Aug 24 2026

An almost carbon copy on Tuesday, with mostly sunny/dry weather across the region as the front will remain to our south. Highs in the lower 90s will be common and again a minimal heat risk as heat index values may actually run a degree or two lower than air temperatures in some locations. The initial trough will pivot into New England, with a secondary trough moving through the Great Lakes and Ohio Valley on Wednesday. This should supply just enough forcing with the front moving back north to support a low chance (20-30%) of showers and thunderstorms in the afternoon. This activity will be pulse-like in nature with locally heavy downpours and perhaps some gusty winds being the main threat.

LONG TERM

(Wednesday night through Sunday) Issued at 736 PM CDT Sun Aug 23 2026

The axis of an upper level trough is shown to be right over the Southeast to start the long term, with shortwaves rippling along the flow across the ArkLaMiss and into the Tennessee Valley. This trough will gradually be pushed northeast as an upper ridge over the Desert Southwest builds over the southern Plains and eastward into the Southeast this weekend. At the surface, a boundary looks to linger over central Alabama, Mississippi, and Georgia through midweek; but, another cold front is expected to push through the Tennessee Valley on Thursday. There may be a reinforcing front that swings through on Friday, but high pressure is shown to quickly build over the Ohio Valley, Appalachians, and portions of the Northeast next weekend. Overall, the best chance of showers and storms will likely be Wednesday night through Thursday. Chances then decrease from late week through the weekend as drier air is filtered into the region.

Guidance indicates that PWATs increase to around 2 inches late Wednesday through Thursday. While there will likely be sufficient instability with highs in the upper 80s to lower 90s Thursday afternoon, model bulk shear values and lapse rates have decreased since yesterday. So, confidence in stronger storms (downbursts) has also decreased; however, these trends will continue to be monitored. Regardless, showers and storms will be efficient rainfall producers. Heavy rain, especially from cells moving over the same locations repeatedly, may result in at least minor flooding issues. Ultimately, keep any eye on forecast updates this week and turn around, don't drown if you encounter flooded roads! For Friday through Sunday, rain chances are lower with continued high temperatures in the upper 80s to lower 90s and lows in the 60s.

AVIATION

(18Z TAFS) Issued at 1220 PM CDT Mon Aug 24 2026

Generally light winds and mostly clear skies expected for the next 24 hours, with prevailing VFR conditions.

HUN WATCHES/WARNINGS/ADVISORIES

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