textproduct: Huntsville

KEY MESSAGES

Updated at 917 AM CDT Thu Aug 27 2026

- Low chances for showers and thunderstorms will be forecast in portions of far NE AL and far NW AL this afternoon into the late evening; no impacts anticipated.

- Dangerous heat will return late this weekend into early next week with heat indices approaching or exceeding 100 degrees.

NEAR TERM

(Tonight) Issued at 336 PM CDT Thu Aug 27 2026

Pop up showers and thunderstorms have developed just to our east and appear to be clustered along a remnant boundary. With this boundary being to our SE, it is likely most of the afternoon showers and thunderstorms will remain just outside out CWA. Thus, only low rain chances remain in NE AL through the remainder of the day. Any showers/storms that de develop will remain sub severe and dissipate with sunset.

Overnight, light winds and low dew point depressions will create a favorable environment for fog formation. Several models show lower visibilities after 06Z. With a decent chance for at least localized areas of dense fog, please use caution will traveling early tomorrow morning.

SHORT TERM

(Friday through Sunday) Issued at 917 AM CDT Thu Aug 27 2026

Through the short term forecast, troughing in the eastern CONUS will finally begin to dampen and shift off towards the Atlantic. In its place, ridging and surface high pressure will build leading to lower rain chances and hotter temps. Highs look to warm back to the mid 90s by Sunday with rain chances remaining below 20%. Post frontal lower dew points will remain through the short term forecast however, mitigating our overall heat concerns. Dew points look to drop to the 60s on Friday and hover between the high 60s to low 70s through the weekend. This will largely keep heat indices below 100 through Sunday. As such, while warm, the weekend should be rather pleasant for late August. With additional heat and moisture retuning in the new work week, make sure to enjoy the nice conditions.

LONG TERM

(Saturday night through Wednesday) Issued at 1048 PM CDT Wed Aug 26 2026

The long term forecast will be largely dominated by a strong upper ridge that will bring a relatively dry but hot airmass to the area. Highs on Sunday will climb to the low 90s while large scale subsidence and afternoon mixing help keep heat indices near or below the 100 degree mark. As the upper ridge builds in and becomes better amplified next week, H85 temps will climb to the 20-25C range, translating to sfc temps in the mid to upper 90s. The good news that may suppress a larger heat wave threat will be that the dewpoint temps are slightly lower than what we have seen in recent events. Even still, afternoon heat indices will rise to the 100-107 degree range next week and any trends that favor a slightly more moist environment would work to increase the risk for dangerous heat. Summer is not over yet, so remember to practice and plan for dangerous temps and very hot outdoor working conditions. The limited moisture and lack of more synoptic support for thunderstorms will keep PoPs capped below 20% through the long term period.

AVIATION

(18Z TAFS) Issued at 1139 AM CDT Thu Aug 27 2026

VFR conditions will prevail through the first half of the TAF. After 09Z, conditions will again be favorable for fog overnight. Confidence is currently too low in fog density and location to include any significant category drops. Future TAF issuances will refine fog possibilities.

CLIMATE

Issued at 323 AM CDT Thu Aug 27 2026

Moderate Risk for Much Above Normal Temperatures:

The Climate Prediction Center has included the entire Tennessee Valley in a Moderate Risk for Much Above Normal Temperatures for September 3rd. Therefore, 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.