textproduct: Huntsville

KEY MESSAGES

Updated at 1059 PM CDT Sat May 23 2026

- A wet weather pattern will continue for the next seven days with an additional 2.5-4 inches of rain expected. Thus, there is at least a low risk of flooding into next week.

NEAR TERM

(Today) Issued at 252 AM CDT Sun May 24 2026

Currently, there is very little shower activity over north Alabama and southern middle Tennessee. However, looking upstream over central Alabama and eastern Mississippi, there are numerous showers moving northeast. There has been no lightning observed with these over the last hour, however. Overall, as some model guidance has suggested, not anticipating too much in the way of shower or storm activity until closer to dawn. Then, our rain chances increase as the aforementioned showers move into north Alabama.

While medium to high chances (50-90%) of showers and storms will be the theme through the day today, not forecasting strong/severe storms due to models showing bulk shear values hovering around 20 knots or so. Instability seems to be less than we've seen in recent days as well, but still sufficient enough for thunderstorm development. Moisture remains elevated as well, with model PWATs between 1.5-1.8 inches (right around the 90th percentile when compared with BMX Sounding Climatology). Therefore, expect another day of showers and storms that will be efficient rainfall producers (heavy rain/downpours) and bring frequent lightning. Remember, if you encounter flooded roads turn around, don't drown! Also, if you hear thunder or see lightning, seek shelter immediately!

Lastly, with increased cloud cover and precipitation chances, highs are forecast to only reach the upper 70s to lower 80s this afternoon.

SHORT TERM

(Sunday night through Tuesday) Issued at 1059 PM CDT Sat May 23 2026

The building high and a deep southerly flow from the Gulf of America will bring higher amounts of atmospheric moisture across the Tennessee Valley. Precipitable water amounts now around 1.5" to 1.6" will increase into the 1.8" to nearly 2" for a good part of next week. This moisture, along with daytime heating and resultant instability will lead to scattered to numerous showers and thunderstorms impacting the Tennessee Valley for much of the new week.

Overall shower coverage should fade in the evening but will not quite all go away. Numerous boundary interactions and what may occur is well beyond what can be forecast. Lows should fall into the mid 60s. Memorial Day will feature unsettled weather for the most part, with numerous showers and thunderstorm. A longer duration of showers and high precip water amounts of 1.8" to 1.9" will produce locally heavy downpours, frequent lightning and gusty winds. The Weather Prediction Center has most of the area in a Slight Risk for excessive rainfall. Thus there will be an heightened risk for flash flooding, as well as more significant rises in area creeks, streams, and rivers. With more more clouds and higher rain chances, high temperatures Memorial Day should only rise to around 80 degrees.

Higher rain chances are expected Monday evening, with rain chances slightly lower as we go into the overnight. Low temperatures should fall into the mid 60s. Another wet day is expected Tuesday for the start of a shorter work week. With more clouds and high chances of showers and storms, high temperatures should rise into the lower 80s. High precip water amounts will result in locally heavy rainfall. An elevated risk for more excessive rainfall and flooding cannot be ruled out if heavy rainfall impacts a similar location.

LONG TERM

(Tuesday night through Saturday) Issued at 1059 PM CDT Sat May 23 2026

Unsettled weather will continue for the remainder of next week, with daily chances of showers and thunderstorms. The circulation rounding surface high pressure off of the east coast will continue bringing deep moisture from the Gulf region well inland. Rain chances however will begin to take on a more diurnal trend as we go into the latter portion of the week, with the highest chances in the afternoon and early evening. Daily high temperatures should range in the low/mid 80s and lows in the mid 60s. A frontal boundary is forecast to move across the area on Saturday from the north. Depending upon far south it moves, rain chances next week may indeed become lower.

AVIATION

(06Z TAFS) Issued at 1158 PM CDT Sat May 23 2026

VFR conditions with little to no shower/storm activity were present at issuance. However, lower CIGs to at least MVFR along with patchy fog leading to lower VIS will be concerns overnight (especially late tonight into early Sunday morning). In addition, shower and storm chances will increase once again around dawn, with medium to high chances (50-90%) persisting through the day over north Alabama. Lower VIS and CIGs will be common in the heavier showers. Light southerly winds tonight will become more southwesterly and increase to around 5 knots or so by the afternoon. Light to calm winds will then take hold Sunday evening.

HUN WATCHES/WARNINGS/ADVISORIES

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