textproduct: Huntsville

KEY MESSAGES

Updated at 345 AM CDT Mon Jun 1 2026

- Areas to widespread dense fog impacting much of the area will fade shortly after sunrise this morning.

- There is a low chance for showers and thunderstorms across the southern portion of the Tennessee Valley this morning.

- Dry conditions are expected to return this evening and continue through Saturday.

- A low-medium chance for showers and thunderstorms return for the Saturday night through Monday timeframe.

NEAR TERM

(Today) Issued at 345 AM CDT Tue Jun 2 2026

An item of worry at the moment is the development of fog. This fog, some of it dense earlier formed across much of northern Alabama east of I-65 before midnight. This fog formed above a wet ground after yesterday's moderate to heavy rainfall, even with a presence of significant high altitude clouds from recent storms. Given the fog coverage and it being dense, we have a Dense Fog Advisory until 9 AM CDT.

Shower activity as of this writing was heading to the SE from the Mid South, with the eastern extent of it likely remaining just west of far NW Alabama. A frontal boundary extended in a WNW to ESE manner from the Ozarks, to across western and middle Tennessee to north of Atlanta. This boundary should head southward this morning as a backdoor front, being pushed by another amplifying trough from eastern Canada to the Mid Atlantic. This upper troughing and surface high pressure building southward from eastern Canada, will bring drier air across the Tennessee Valley as we go into the day. This airmass change, along with a return of the sun, and winds picking up will help dissipate fog shortly after daybreak. With a strong June sun, highs today should rise into lower 80s (may see a few mid 80s in those warmer spots). Light winds early will become NE at 5-15 mph.

SHORT TERM

(Tonight through Thursday night) Issued at 1000 PM CDT Mon Jun 1 2026

Short range model consensus suggests that the northern portion of an amplified 500-mb ridge (extending northeastward into the Mid- MS Valley and western Great Lakes) will gradually evolve into a mid-level high as it translates southeastward into the TN Valley by the end of the period. In the low-levels, we will remain under the influence of a Canadian ridge that will shift southeastward from the Great Lakes into the central/southern Appalachians and maintain a dry airmass (with surface dewpoints in the m-u 50s) and light/variable to light east-southeasterly flow. Thus, we expect dry conditions and mostly clear skies to exist for the duration of the period, with afternoon highs in the u70s-l80s and overnight lows in the m-u 50s.

LONG TERM

(Friday through Monday) Issued at 1000 PM CDT Mon Jun 1 2026

High pressure will keep large scale subsidence and relatively dry air in place through the end of the work week as upper ridging inches to the east, resulting in a stream of Gulf moisture across the ArkLaTex region as we head into the weekend. The good news is that temperatures will remain on the mild side with highs in the low to mid 80s and lows mainly in the low to mid 60s. As the aforementioned ridge gets closer over the weekend, we will see an increase in cloudiness as well as low chances for rain and storms over NW AL Saturday. The synoptic pattern becomes a bit more complicated toward the beginning of next week as high pressure is suppressed to our east while an upper low digs across the northeast. A shortwave will work to shift the higher moisture axis into the southeastern US, but it is a bit unclear at this range when and where the best chances for rain and thunderstorms will be. For now we will stick with blended guidance with low to medium rain/storm chances Sunday through Monday.

AVIATION

(06Z TAFS) Issued at 1244 AM CDT Tue Jun 2 2026

Shower activity has moved south of the area, with low chances of it returning to the terminals. Passing few to scattered mid level, and broken to overcast high clouds continued over the region. Despite those clouds, a wet ground from recent rains and light winds make conditions favorable for the formation of fog in the late night. Have included fog in the TAF, with VSBY reductions to 1SM as a TEMPO before sunrise. Will amend should VSBYs and/or CIGs are reduced. Conditions should rapidly improve after daybreak, with more direct sun plus an increasing wind help dissipate the fog. Light winds will become NE 5-15kt in the mid/late morning, continuing into the evening.

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.