textproduct: Huntsville

KEY MESSAGES

Updated at 320 AM CDT Mon Sep 7 2026

- Afternoon highs in the upper 80s to mid 90s with heat index values in the mid 90s to 100 continue through the work week.

- Isolated showers and thunderstorms could form this afternoon in the higher terrain of far northeast Alabama and the adjacent Cumberland Plateau of southern Middle Tennessee.

- Medium chances for showers and storms return on Thursday.

NEAR TERM

(Today) Issued at 320 AM CDT Mon Sep 7 2026

A backdoor cold front that moved across the area Sunday was now positioned south of the Tennessee Valley, near the I-20 corridor. With dry air at the surface and aloft, clear to partly cloudy skies prevailed over and around the region with 3 AM temperatures still on the warm side in the low/mid 70s. A light NE wind and a greater drybulb/dewpoint temperature should keep predawn fog formation minimized.

A fading shower complex heading to the SE across Missouri should bring a few to scattered high clouds as we near daybreak into the morning. With the airmass change, high temperatures later today should a tad "cooler." Rather than upper 90s to 101 highs,they should range from the upper 80s east and higher terrain to the low/mid 90s west. Lower dewpoints in the upper 60s and lower 70s, will reduce heat index values into the mid 90s to 100, thus not hot enough for an official heat advisory. That said, those participating in outside activities today should stay hydrated and alert to dangers posed by very warm and hot conditions.

Residual moisture in the atmosphere plus daytime heating could be sufficient for isolated showers/ thunderstorms forming this afternoon. Any convection that initiates should be limited to the higher terrain of far NE Alabama and the adjacent Cumberland Plateau of southern Middle Tennessee.

SHORT TERM

(Tonight through Wednesday Night) Issued at 833 PM CDT Sun Sep 6 2026

As we head through the first half of the work week, the large amplitude ridge over the central CONUS flattens out bringing a more zonal flow pattern to much of the southern US. This results in afternoon highs in the lower 90s with overnight lows in the upper 60s to lower 70s. Dry conditions should persist as well as we remain under the influence of sfc high pressure centered over the Mid-Atlantic. Despite temperatures being a few degrees cooler this week, it will still feel quite warm and NWS Heat Risk is forecast to be Moderate (level 2 of 4). Be sure to continue practicing heat safety to avoid heat illness if spending time outdoors.

LONG TERM

(Thursday through Sunday) Issued at 833 PM CDT Sun Sep 6 2026

The main feature of discussion during the long term period will be a closed low system shifting eastward just north of the Great Lakes region, bringing a cold front southeastward into the Tennessee Valley by Thursday night. Ahead of and along the frontal boundary, increased chances (30-50%) of showers and thunderstorms are forecast Thursday afternoon into Friday. While there will likely be a lull in storm activity sometime Friday, this will be short-lived as an upper level shortwave shifts eastward into the area ahead of an upper level ridge that is forecast to set up over the southern Plains. Low to medium chances (20-40%) of showers and thunderstorms are forecast to continue through the weekend. Outside of the mentioned rain chances, heat will continue to be a concern. Highs are forecast to remain in the upper 80s to mid 90s with heat indices near 100 degrees. While this is below local Heat Advisory criteria, we encourage everyone to remain hydrated and practice heat safety while outdoors.

AVIATION

(06Z TAFS) Issued at 1230 AM CDT Mon Sep 7 2026

A cold front which moved across the area on Sun should remain south of the terminals into Mon evening. NE winds around 5kt should become light and variable in the overnight. NE-E winds around 5kt are expected a couple of hours after daybreak. Winds should become E-SE around 10kt late in the afternoon and evening. No weather of consequence is expected at the KMSL and KHSV terminals. Isolated convection that could develop Mon afternoon should remain east of the terminals.

HUN WATCHES/WARNINGS/ADVISORIES

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