textproduct: Huntsville

KEY MESSAGES

Updated at 944 PM CDT Sat May 9 2026

- Low-medium chances for patchy, dense fog tonight

- A low chance for thunderstorms will exist Sunday afternoon and evening with a low chance of a few strong storms capable of producing gusty winds and small hail (highest confidence across NW AL)

NEAR TERM

(Today and Tonight) Issued at 240 AM CDT Sun May 10 2026

With high clouds departing to the SE paired with calm winds and low dew point depressions, areas of patchy to locally dense fog have begun to form as of around 2 AM. Wide spread dense fog has yet to develop, thus will hold off on a Dense Fog Advisory for now. Conditions will be monitored through the night. Regardless, use caution while traveling this morning.

Winds will remain calm most of the day today. Thus, solar insulation will be the primary feature aiding in the dissipation of fog this morning. As such, areas of locally dense fog may linger a few hours after Sunrise without elevated winds to aid in mixing. Our attention through the day will quickly shift to an approaching cold front. Models maintain a dry morning with rain chances and clouds increasing through the afternoon into the evening. Consensus has the leading edge of precipitation entering NW AL around 5-7 PM and then pushing east through the night. There will be a very narrow window both spatially and temporally for some strong to marginally severe storms this evening along the leading edge of precipitation. Prior to sunset, we look to obtain about 500 J/KG of MUCAPE which will be supportive of thunderstorms. Shear will be significantly lacking, inhibiting storms ability to become organized. If storms along the leading edge of precip can take advantage of the waning instability prior to sunset, the meager MUCAPE is enough to support a low damaging wind threat in NW AL. As the sun sets, we will quickly lose instability. As such, the low severe threat will quickly diminish even as showers and general thunderstorms continue to progress east. Most models have showers and storms moving east ahead of the actual front for most of the night and into Monday morning, when the front actually passes.

SHORT TERM

(Monday through Tuesday) Issued at 944 PM CDT Sat May 9 2026

Post-frontal sfc high pressure will reign over the area early next week, allowing dry conditions both Monday and Tuesday. Highs are forecast to be relatively cooler, peaking in the mid 70s through most of the area both afternoons. Overnight lows are forecast to drop into the mid to upper 40s.

LONG TERM

(Tuesday night through Saturday) Issued at 944 PM CDT Sat May 9 2026

Tuesday night clear skies and light winds will help lows dip into the lower 50s. On Wednesday, high pressure will get shoved eastward as a trough moves across the Great Lakes. The cold front associated with the sfc low up there will trail through the OH Valley, into the Mid MS Valley and back into the Southern Plains. The front will move through Wednesday evening or night and it is trending to only provide a few showers. Afternoon highs should be able to reach around 80 degrees. We will be postfrontal on Thursday and high pressure will build in across the Great Lakes on down to the Lower MS Valley. This will provide highs in the mid/upper 70s under a sunny sky and lows around 50 degrees. The upper level ridge will glide through the Southeast on Friday, but be dampened by a shortwave running into it on Saturday. It will keep conditions dry during this time, but raise temperatures. Look for highs in the lower 80s on Friday and the mid to upper 80s on Saturday.

AVIATION

(12Z TAFS) Issued at 555 AM CDT Sun May 10 2026

Dense fog looks to impact the terminals through around 14Z with LIFR ceilings and visibilities. Through the morning fog will dissipate with ceilings lifting back to VFR through the remainder of the TAF period.

HUN WATCHES/WARNINGS/ADVISORIES

AL...Dense Fog Advisory until 9 AM CDT this morning for ALZ001>010- 016.

TN...Dense Fog Advisory until 9 AM CDT this morning for TNZ076-096- 097.