textproduct: Huntsville

KEY MESSAGES

Updated at 816 PM CDT Wed Sep 9 2026

- Medium chances for showers and storms Friday into Saturday with low chances continuing through Tuesday.

- NWS Heat Risk will remain in the Minor to Moderate category throughout the forecast period.

NEAR TERM

(Rest of Today and Tonight) Issued at 753 AM CDT Thu Sep 10 2026

The TN Valley remains under the influence of a ridge axis extending from the mid Atlantic basin west through the Carolinas into GA and AL. Dew points have dropped into the 60s as a result this morning. Plenty of sunshine will push temperatures into the lower to middle 90s this afternoon. Thankfully, the lower dew points will keep heat index values below 100 for most areas this afternoon. Overnight lows will drop into the upper 60s to lower 70s once again, with the coolest temperatures in southern middle TN and far northeast AL. We will have to monitor showers and thunderstorm clusters that will be spreading northwards through southern MS and AL with a weak disturbance. A cold front will also have showers and thunderstorms snaking along this boundary from the southern Plains into the OH Valley as well, well to our northwest.

SHORT TERM

(Friday through Saturday Night) Issued at 753 AM CDT Thu Sep 10 2026

The disturbance over MS and southwest AL will lift northeast on Friday, spreading medium chances (30-50%) of showers and thunderstorms over the TN Valley, along with higher PW values and dew points in the 70s. Then, a trough axis will pivot east from the central Plains into the mid South and TN Valley on Saturday, elevated shower and thunderstorm chances to high (70-90%). Deep layer bulk shear values will be fairly low, so slower moving storms and high PW values will lend to a risk heavy rainfall both Friday and Saturday, with a marginal risk of Excessive Rainfall outlooked by WPC. High temperatures will be stunted by the clouds and precipitation, with middle 80s to around 90 expected on Saturday. Lows will be in the upper 60s to lower 70s given the high dew point values.

LONG TERM

(Sunday through Wednesday) Issued at 816 PM CDT Wed Sep 9 2026

Through the long term forecast, high pressure looks to build in again over the mid Atlantic states and extend back into the TN Valley. This will induce weak SSW flow at the surface and keep humid summer like conditions in place each day. Highs looks to remain in the 90s with dew points in the high 60s to low 70s. This will push heat indices near and above triple digits each day. While not approaching any records, these temperatures and dew points will be unseasonably high, presenting more like summer than mid September. Please make sure to continue to practice proper heat and sun safety during our continued hot and humid conditions.

Due to the higher humidity for mid September, we will have low chances for rain and perhaps a stray thunderstorm each afternoon. Coverage currently looks very scattered. Without any specific forcing mechanism it will be hard to nail down specific times or locations that may have better chances for rain. Please check back for updates regarding our low rain chances next week.

AVIATION

(18Z TAFS) Issued at 1123 AM CDT Thu Sep 10 2026

VFR conditions will prevail at each terminal through the period. Clouds will begin to increase late in the period, but winds will remain light and generally out of the south.

HUN WATCHES/WARNINGS/ADVISORIES

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