textproduct: Huntsville

KEY MESSAGES

Updated at 1055 PM CDT Sat Apr 25 2026

- Another round of showers and thunderstorms has a low chance of bringing some strong to severe storms to the area Monday night into Tuesday morning.

- Yet another round of strong to severe thunderstorms are forecast late Tuesday night into Wednesday morning.

- Shower activity should wind down Wednesday evening in the wake of a cold front passage. More shower chances return late Thursday into Friday.

- Cooler conditions are expected for the mid and latter half of the week.

NEAR TERM

(Rest of Tonight and Sunday) Issued at 1055 PM CDT Sat Apr 25 2026

Scattered showers and thunderstorms in the late afternoon and early evening have moved south and east of the Tennessee Valley. Welcomed rainfall amounts were generally on the light side ranging from a trace to around 2 tenths of an inch. Light winds and mostly "clear" skies with scattered to broken high cirrus moving by will allow night time low temperatures to fall into 50s (lower 50s east to upper 50s west). Higher moisture content in the local and regional atmosphere, along with moisture from the recent rains will be favorable for patchy fog formation. Some of the fog could become locally dense, something that we will monitor regarding a potential for the issuance of a Dense Fog Advisory.

Any fog that forms should quickly dissipate after sunrise Sunday. With a strong late April sun, high temperatures should rise into the lower 80s (with a few mid 80s in the warmer spots). Light winds become NE 5-10 mph in the afternoon. Sufficient moisture plus the daytime heating could yield an isolated shower or storm over NW Alabama in the afternoon, shower activity elsewhere is not expected.

SHORT TERM

(Sunday night through Tuesday night) Issued at 1055 PM CDT Sat Apr 25 2026

A few stray showers could occur mainly on our western areas Sunday night, otherwise expect another mild night with low temperatures a tad warmer from the mid 50s east to lower 60s west. A developing synoptic scale area of low pressure forming over the Great Basin and central Rockies will move to the NE while deepening into a sub 1000mb surface low over the upper Mississippi Valley by Monday evening. High temperatures to start the week should rise into the low to mid 80s. Winds will become SE-S 10-20 mph with some higher gusts.

Thunderstorms preceding a cold front extending south of the surface low, will approach the Tennessee Valley. There is disagreement between the deterministic models, with the NAM showing nothing until Tuesday morning, while the GFS, Canadian, ECMWF indicating shower activity moving across our western areas sometime Monday evening. These spectral models all indicated elevated CAPE and helicity primarily over NW Alabama. As such, the Storm Prediction Center has placed the NW quarter of our area, roughly from Moore and Lincoln counties then from NW Madison county to west of Franklin county AL in a Slight Risk for severe weather, with a Marginal Risk from Franklin county TN to Cullman county, and General thunderstorm risk across NE Alabama. All modes of severe weather are possible. Timing of this has continued trending late Monday night into early Tuesday, making a severe weather potential more dangerous (as most of the population is sleeping when the strongest storms expected).

This first episode of showers and storms should gradually fade as we go into the day Tuesday. Under partly cloudy skies, high temperatures should range from the low/mid 80s. However, more convection development should occur as we go into Tuesday evening. Those three models again were to various degrees showing elevated severe parameters, with even greater timing differences, from Tuesday afternoon into the late night. More severe weather is possible, with much of NW and north central Alabama in a Slight Risk for severe weather. Residents of the area should stay current with the latest thinking regarding this upcoming severe event, with some of occurring in the late night.

LONG TERM

(Wednesday through Saturday) Issued at 1055 PM CDT Sat Apr 25 2026

The cold front should move across the area during Wednesday. Timing of the boundary appears will be in the late morning and afternoon. Medium to high additional shower and thunderstorm chances are expected, with rain chances ending from west to east in the afternoon, as somewhat drier and cooler air filters in from the NW. Depending upon how much rainfall occurs, some hydrological issues cannot be ruled out should runoff cause rises in areas rivers and streams. With clouds and high rain chances, high temperatures for the mid week will range in the mid/upper 70s.

Noticeably cooler conditions are expected Wednesday night, with lows around 50. The cooler trend will continue Thursday, with highs only in the lower 70s. A bit cooler both Thursday and Friday nights, with lows in the mid 40s to around 50. Highs on Friday and Saturday should only rise into the mid/upper 60s. Despite the front moving south and east of the area, it should become stationary to our south. Upper lows moving across the SE states, as well as upglide in the lower to middle troposphere will bring low to medium rain chances from late Thursday night into Friday.

AVIATION

(00Z TAFS) Issued at 655 PM CDT Sat Apr 25 2026

Scattered convection moving NW-SE could impact the terminals, mainly areas east of I-65 in the early evening. Have a TEMPO for convection impacting KHSV through 26/0200Z. Otherwise, shower activity should dissipate as we go into the late evening. With light winds and additional moisture we have included MVFR (VSBY reduced 3-6SM) BR for the terminals in the predawn. Fog would be more prevalent in/near areas that receive rainfall this evening. Any fog/mist that forms should fade shortly after daybreak Sun, with VFR weather returning for the remainder of the TAF. Winds into late Sun morning should be light and variable, then from the NE-E less than 10kt Sun afternoon.

HUN WATCHES/WARNINGS/ADVISORIES

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