textproduct: Huntsville

KEY MESSAGES

Updated at 850 PM CDT Fri Aug 28 2026

- Dangerous heat will return early next week and will tend to intensify through the week with heat indices approaching or exceeding 100 degrees.

- There are low chances for thunderstorms each day mainly from Sunday afterward, and especially in higher terrain areas during the afternoons.

NEAR TERM

(Today) Issued at 153 AM CDT Sat Aug 29 2026

An inverted trough at the surface through 925 mph was located near the I-65 corridor in AL into middle TN. This feature shifts west today and allows PWs of 1.0-1.5 inches and surface dew points in the lower 70s to advect northwest into areas along and east of I-65. This may allow for additional cumulus to develop today. The probability of a shower or thunderstorm is 10% or less along Sand and Lookout Mtns and into Cullman County. Otherwise, expect another day with highs in the lower 90s to for most valley areas, with upper 80s along the higher terrain in our eastern counties.

SHORT TERM

(Saturday night through Monday) Issued at 850 PM CDT Fri Aug 28 2026

The short term forecast will change little as the synoptic pattern favors a strong upper high/ridging centering closer to the region. As H85 heights rise, so will our temperatures each day with mid 90s highs becoming more widespread over the area. The good news is that the southerly Gulf fetch is not as strong with this wave and moisture/humidity will not be quite as high. This will keep thunderstorm chances capped at 20-30% or below each day, mainly over NE AL. Heat indices will climb to the 99-105 degree range which will pose a risk for heat related illness especially for those more susceptible to heat. Right now the coverage of heat indices at or above 105 degrees looks a bit more limited and we have no current plans to issue any Heat Advisories, but that could change as we get closer to next week. Be sure to stay tuned for updates and always follow heat safety guidelines!

LONG TERM

(Monday night through Friday) Issued at 850 PM CDT Fri Aug 28 2026

By the start of the long term, ridging will be centered over the TN Valley. This will be paired with high pressure over the eastern CONUS at the surface. The high pressure will work to keep rain chances low and set temps on a warming trend. Highs look to warm from the low 90s back to the high 90s by the end of the week. Surface high pressure will induce weak ESE flow which will gradually return dew points to the 70s. While we will have to keep and eye on trends, models currently keep dew points in the low 70s which will work in our favor to keep heat indices below Heat Advisory criteria (105F). Under ESE flow, dew points look highest in NE AL. As such, low chances (20% or less) for terrain enhanced showers are forecast each afternoon. Without any widespread forcing for clouds and rain, heat will be our primary concern through the long term forecast. Make sure to check back for updates and continue to practice proper heat safety.

AVIATION

(06Z TAFS) Issued at 1028 PM CDT Fri Aug 28 2026

VFR flight weather conditions are forecast.

CLIMATE

Issued at 230 PM CDT Fri Aug 28 2026

Moderate Risk for Much Above Normal Temperatures:

The Climate Prediction Center has included northern Alabama and southern Middle Tennessee in a Moderate Risk for Much Above Normal Temperatures for September 5th and 6th. There is a 40-60% chance for temperatures above 95 degrees F and heat index values exceeding 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.