textproduct: Huntsville

KEY MESSAGES

Updated at 929 AM CDT Wed Jun 24 2026

- Low chance of dense fog tonight into early Wednesday morning

- Low chance (30% or less) of showers and thunderstorms Thursday into Friday

- Major (Level 3 of 4) Heat Risk develops Sunday into Monday and continues through the middle of next week with Heat Index values of around 100 to 105 degrees

NEAR TERM

(Rest of Today and Tonight) Issued at 929 AM CDT Wed Jun 24 2026

Dense fog has dissipated in our eastern valleys this morning, thus the Dense Fog Advisory was been allowed to expire. An MCV was evident in satellite imagery moving southeast through central MS. This will ignite new thunderstorms today well to our south and southwest. Some high cloudiness from anvil blowoff may spill into our counties, but overall a mostly sunny day is anticipated with highs in the lower to middle 80s. More patchy dense fog is expected again tonight with lows in the lower to middle 60s.

SHORT TERM

(Thursday through Friday) Issued at 929 AM CDT Wed Jun 24 2026

Yet another MCV will spill southeast into the mid South on Thursday morning, with a few showers entering northwest Alabama. Low chances of new showers and a few thunderstorms related to this MCV may reach further northeast during the afternoon. No severe weather is expected however. The MCV axis by mid evening will be along the I-65 corridor, but loss of daytime heating may preclude precipitation much east of this corridor. After highs in the middle to upper 80s, overnight lows will only dip into the upper 60s to lower 70s.

LONG TERM

(Friday night through Tuesday) Issued at 936 PM CDT Tue Jun 23 2026

A fairly stout upper-level ridge of high pressure over Texas will build into the region this weekend into early next week. A very warm, humid air mass will spread eastward over the Tennessee Valley underneath this ridge and the end result will likely be major to potentially extreme heat impacts during this timeframe. Ample sunshine each day will push high temperatures into the low to mid 90s Saturday and Sunday and the mid to potentially upper 90s Monday and Tuesday. These hot temperatures, combined with dewpoints in the low to mid 70s will create heat index values over 100 degrees each day, and potentially above 105 degrees Sunday, Monday, and Tuesday. Should these trends continue, Heat Advisory products may be needed early next week -- especially factoring the very limited recoveries overnight (lows in the mid 70s). NWS Heat Risk values highlight a vast majority of the region in Major Risk for this timeframe, meaning that this heat will likely affect anyone sensitive to heat (especially those without adequate cooling/hydration) as well as some health systems and industries. If you have outdoor plans this weekend into early next week, be sure to practice heat safety such as staying hydrated and seeking shade when outdoors to avoid heat related illness.

AVIATION

(12Z TAFS) Issued at 555 AM CDT Wed Jun 24 2026

A tempo group for MVFR visibilities due to fog were left in the 12Z TAF issuance through 14Z. Then expect VFR conditions to return. High CIGS around 25,000 feet are expected to continue this morning before breaking up this afternoon. Fog looks very possible again later tonight, but left out for now since that would occur towards the end of the TAF period.

CLIMATE

Issued at 936 PM CDT Tue Jun 23 2026

Moderate Risk for Much Above Normal Temperatures:

The Climate Prediction Center has included the Tennessee Valley in a Moderate Risk for Much Above Normal Temperatures for July 1-3. Therefore, there is a 40-60% chance for temperatures above above the mid 90s and Heat Index values above 105 degrees F during this period.

More information on the CPC U.S. Hazards Outlook can be found at: https://www.cpc.ncep.noaa.gov/products/predictions/threats/threats.php

HUN WATCHES/WARNINGS/ADVISORIES

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