textproduct: Huntsville

KEY MESSAGES

Updated at 510 AM CDT Tue Oct 6 2026

- Tropical Storm Isaias has formed over the Gulf and is forecast to strengthen into a hurricane as it makes landfall Friday night near the AL/FL coastline. Isaias will move rapidly northward Saturday and Saturday night, brining a medium chance of impactful gusty winds and a low risk of flooding to the Tennessee Valley.

NEAR TERM

(Today) Issued at 142 AM CDT Wed Oct 7 2026

Another clear and cool night was underway this morning with temperatures falling into the middle 50s to lower 60s at this hour. An elongated surface ridge of high pressure across the southeast U.S. will maintain a sunny day with warm temperatures in the middle to upper 80s along and west of I-65 and lower 80s east of I-65 (cooler atop the higher elevations). Winds will remain light and variable.

SHORT TERM

(Wednesday night through Friday) Issued at 906 PM CDT Tue Oct 6 2026

Though we will remain in northwest flow aloft mid to late work week, an area of high pressure at the surface will remain the dominant weather feature, reinforcing this drier air mass. As a result of the dry air mass and ample sunshine, Thursday will be an even warmer day as highs climb into the upper 80s to lower 90s. The dry air mass and clear conditions will still allow for good radiational cooling Wednesday and Thursday nights, but there will be an upward trend, with mid to upper 50s lows being common.

Friday will be a big transition day as the high shifts to the east and a shortwave over Texas develops and begins to pivot toward the lower Mississippi Valley. This feature will force Tropical Storm Isaias over the north central Gulf, toward the MS/AL/FL coast. Though no impacts will be felt across the Tennessee Valley on Friday -- a gradual increase in cloud cover will likely occur by the afternoon. These clouds won't impact our sensible weather too much as another very warm day is forecast with highs again reaching the upper 80s to lower 90s. However, things will change over the following 24 hours. More on this in the section below.

LONG TERM

(Friday night through Tuesday)

Update at 514 AM CDT Tue Oct 6 2026... Tropical Storm Isaias has formed as of the 09Z update. A faster movement and track through AL into middle TN is now forecast, which may increase the impactful gusty wind potential as the potential hurricane weakens and moves rapidly northward through the TN Valley Saturday. We have adjusted PoPs to account for earlier arrival of outer bands of rainfall Friday night due to the faster movement. The faster movement may lessen residence time of heavy rainfall and could keep the flood risk low. Nevertheless, will continue to message a low risk of flooding due to tropical rainfall associated with the system that is expected and with the Slight Risk issued by WPC for Days 3-4.

Issued at 906 PM CDT Tue Oct 6 2026

As noted above, Tropical Storm Isaias has formed in the Gulf and will be the feature of focus that will potentially impact the Tennessee Valley this weekend. This storm is officially forecast to strengthen into a hurricane as it approaches the north central Gulf Coast late Friday. As it does so (and eventually comes ashore Friday night into Saturday morning), it will be interacting and eventually merging with a shortwave trough pivoting into the lower Mississippi Valley. This should accelerate the system during the day on Saturday as it moves northward from the Gulf Coast into the Mid South/Tennessee Valley by the afternoon/evening. The tropical wind field with this system should weaken considerably into a Depression or lower by the time it moves this far north. However, the strong pressure gradient will still allow for some potential Adivosry-level wind gusts of at least 30-40 MPH, especially along the higher terrain.

Additionally, the track of this feature will be important. If it makes landfall in the FL Panhandle and then swings north over our eastern areas, this would place our area in the developing dry slot -- lowering rainfall amounts and keeping any stronger thunderstorm activity and tropical tornado threat to our south and east. However, it it were to make landfall further west, with the remnant core of the system remaining over eastern Mississippi, this could put us in line for some slightly higher QPF and at least a low tornado threat. Better resolution of the track will come to light as the system forms and organizes over the next 24-36 hours. In the meantime, residents of the Tennessee Valley should be aware and prepared for a potentially windy/rainy Saturday into Saturday night and stay tuned and up to date on the latest forecast information -- especially if they have travel plans this weekend.

By Sunday, the system will be departing into the Ohio Valley and Central Appalachians. Breezy winds and low rain chances will diminish by the evening hours on Sunday, with more tranquil weather on the horizon for early next week as high pressure builds in from the west.

AVIATION

(12Z TAFS) Issued at 519 AM CDT Wed Oct 7 2026

VFR flight weather conditions are forecast.

HUN WATCHES/WARNINGS/ADVISORIES

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