textproduct: Huntsville

KEY MESSAGES

Updated at 235 AM CDT Sat Oct 10 2026

- The remnants of Isaias will continue to move north into the Tennessee Valley today, bringing high chances for impactful gusty winds up to 40-60 mph, a medium chance for flash flooding, and a very low, conditional chance of tornadoes through tonight.

- A High Wind Warning is in effect for portions of north-central and northeast AL through 7 AM Sunday. A Wind Advisory is in effect for remaining counties through 7 AM Sunday.

- A Flood Watch remains in effect through 7 AM Sunday.

NEAR TERM

(Today) Issued at 235 AM CDT Sat Oct 10 2026

The remnants of Hurricane Isaias will continue to track northward through central Alabama early this morning and move into the Tennessee Valley during the day -- exiting by the late afternoon/early evening. As of the 06z Intermediate Advisory from the National Hurricane Center, Isaias has been designated as Post Tropical as its interaction with land and merger with a shortwave trough has significantly degraded any semblance of tropical characteristics. However, do not let this fool you. The strong pressure gradient and expanded wind field aloft will create hazardous gradient (non- thunderstorm) winds across the region this morning and into most of the afternoon hours as the system and its remnant center shifts north.

Underneath the stratiform rain bands moving in, we're already seeing wind gust obs in the 25-35 MPH range over portions of north central and northeast Alabama. A glance at obs further south and the strong wind field projected by model soundings suggest that gusts in the 30-50 MPH range will develop in the 09z to 18z timeframe, with perhaps some locally higher gusts along the higher terrain of the Cumberland Plateau. Our highest confidence in these higher gusts reaching the surface will across the north central and northeast Alabama and have a High Wind Warning in these locations through 12z Sunday. Elsewhere, a Wind Advisory is in effect for the same timeframe. These winds will be capable of producing tree and power line damage and power outages are expected. Travel may also be difficult, especially in the higher terrain areas. If you can stay at home, do so.

Regarding the rainfall aspect, would expect the broad area of stratiform rainfall to continue to overspread and impact the region through the late morning/early afternoon. Thereafter, only sporatic, lighter rainfall will occur for the most part as the dry slot lifts northward across Alabama. This will shunt the heavier, more convective tropical rainbands further east over Georgia. However, several hours of stratiform rain from a decaying tropical system will still add up to around 1.5" to 3" over the course of the next 24 hours (with most of it likely occurring in the next 6-9 hours). Locations most suscepible for localized flash flooding issues will be urban and poor drainage areas -- or where a more "enhanced" band can rotate over for an extended period of time. A Flood Watch remains in effect through 7 AM Sunday to highlight the potential for localized, flash flooding due to excessive rainfall.

With Isaias having taken a more eastern track (western Florida Panhandle into eastern Alabama), the prospects for a band of robust thunderstorms being able to develop later this morning/afternoon appears significantly lower and more focused to our east. Thus, any tornado threat appears very low at this time. The one caveat is that CAMs are hinting at a band of showers forming over far northeast Alabama around 21z near peak heating. Model soundings at this time indicate extremely meager CAPE profiles, but as is the case with tropical systems there is plenty of directional and speed shear depicted in the hodographs. Therefore, will message a very low, conditional tornado threat through this evening -- from spinning showers and/or a very low- topped storm or two.

SHORT TERM

(Saturday night through Monday) Issued at 1102 PM CDT Fri Oct 9 2026

The wind field will be weakening Saturday. This may weaken below criteria by the evening hours, ending the need for any continued wind products Saturday evening. However, moderate to high rain chances will likely continue Saturday night (though intensity looks much lighter).

The remnants of the tropical system on Sunday is forecast to shift northeast into eastern Kentucky and SW West Virginia by then. Many models show lingering rain showers rotating around the surface low into our NE Alabama or southern middle Tennessee counties trough the morning hours on Sunday.

Later in the day, upper ridging builds into the area from the west. This should bring sunny conditions to the area later in the afternoon. Morning precipitation and cloud cover should help to keep highs on the cool side, only reaching the upper 60s to mid 70s. Expect the coolest conditions east of I-65, where cloud cover will break up the latest in the afternoon. Further west near the AL/MS border expect highs in the mid 70s. With clear skies and light winds expected Sunday night, lows should drop into the mid 50s to lower 60s.

LONG TERM

(Monday night through Friday) Issued at 1102 PM CDT Fri Oct 9 2026

The upper ridging is expected to strengthen over the southeast Monday into the middle of next week. The sunny skies and building upper level winds will make for a very warm conditions with highs climbing back into the mid to upper 80s and lows in the lower 60s.

An upper level low and associated longwave trough axis makes some slight progress pushing east into the upper ridge over the area towards the end of the week/weekend. However, over much of the area the surface and upper ridge remain stout. However, enough forcing aloft and moisture convergence does setup over much of Tennessee to produce some precipitation over that area. Our southern middle Tennessee counties could see some low end precipitation chances, but consistency is too low to include at this time. Most guidance does push a dry cold front through the area Friday or Friday night. This will bring cooler weather to to the area that is more seasonable into the weekend.

AVIATION

(06Z TAFS) Issued at 1158 PM CDT Fri Oct 9 2026

The remnants of Hurricane Isaias will continue to move northward across Alabama and into (and through) the Tennessee Valley over the next 24 hours. This system will bring very gusty winds (between 30-40 kts) out of the ENE to ESE, with locally higher gusts at times, along with LLWS of 50-60 kts at 2 kft. Additionally, a broad area of RA/+RA will impact the region late tonight through at least early/mid afternoon on Saturday, resulting in IFR/LIFR conditions due to low ceilings below 500 ft to 1000 ft. AWWs may be needed if thunder develops at either site, but the probability is low.

HUN WATCHES/WARNINGS/ADVISORIES

AL...Flood Watch through Sunday morning for ALZ001>010-016.

Wind Advisory until 7 AM CDT Sunday for ALZ001>005.

High Wind Warning until 7 AM CDT Sunday for ALZ006>010-016.

TN...Flood Watch through Sunday morning for TNZ076-096-097.

Wind Advisory until 7 AM CDT Sunday for TNZ076-096-097.