textproduct: Huntsville

KEY MESSAGES

Updated at 908 AM CDT Wed Oct 7 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, bringing a medium chance of impactful gusty winds and a low risk of flooding to the Tennessee Valley.

NEAR TERM

(Tonight) Issued at 236 PM CDT Wed Oct 7 2026

No major changes were made to the previous forecast.

Previous Discussion: Under the influence of an upper level ridge and subsequent sfc high pressure, dry weather will persist through the Tennessee Valley. This afternoon, under mostly clear skies, temperatures are forecast to warm into the low to mid 80s through most of area with isolated spots in NW AL warming into the upper 80s. Tonight, low temperatures are forecast to drop to the low to mid 50s once again. A very low chance of fog exists (isolated to agricultural areas) during the early morning hours. Any fog that forms will dissipate shortly after sunrise.

SHORT TERM

(Thursday through Friday) Issued at 908 AM CDT Wed Oct 7 2026

The warm, dry pattern will continue with the assistance of sfc high pressure through the end of the work week. However, a pattern shift is ahead as we track Tropical Storm Isaias through the Gulf. By Friday, winds will begin to shift from northwesterly to southwesterly and an influx of moisture will advect into the area. While there is a detailed discussion on the tropical system below, we'd like to reiterate that there is still uncertainty with the track and subsequent impacts to the TN Valley. Be sure to stay updated with the latest forecast information as we approach the weekend.

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

(00Z TAFS) Issued at 539 PM CDT Wed Oct 7 2026

VFR conditions will prevail at each terminal through the period, with light winds and a clear sky.

HUN WATCHES/WARNINGS/ADVISORIES

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