textproduct: Huntsville

KEY MESSAGES

Updated at 956 PM CDT Mon Jun 8 2026

- Additional rain chances (40% or less) will return Tuesday morning, bringing a low risk of flooding issues

- Heat Risk increases by late this week with heat index values in the middle 90s to around 100 degrees Wednesday through Friday

NEAR TERM

(Today) Issued at 402 AM CDT Tue Jun 9 2026

A warm/humid airmass resides across the TN Valley early this morning, with temperatures currently in the lower 70s. Although locally dense fog is impacting portions of northeast AL and Cullman County, it appears that the fog is most widespread in the larger river valleys in this region and we will continue to message risks from visibility reductions through social media. Through sunrise, the coverage of mid/high-level convective debris clouds (and a few sprinkles of rain) originating from an MCV across central KY will increase as winds aloft veer to the NW, and this should reduce the risk for widespread/dense fog across the rest of the CWFA.

Over the course of the day, a subtropical high (initially centered across the northeastern Gulf) will retrograde westward and should begin to exert more of an influence on local weather conditions. Although a few showers and thunderstorms may occur later this morning across the northwest as a low-level jet strengthens ahead of a second MCV diving into the Mid-MS Valley, the greatest concentration of showers and storms (30-40% coverage) will be in the higher terrain of northeast AL. Elsewhere, POPs will be in the 10-20% range, but regardless of coverage, soils remain saturated and steering currents will slowly collapse as the influence of the mid-level high strengthens. Thus, with PWAT values remaining in the 1.8-1.9" range, flash flooding may still occur in a few locations. Highs will return to the m80s-l90s in lower elevations, and with dewpoints in the l-m 70s, heat indices will reach the 95-100F range.

SHORT TERM

(Tuesday night through Thursday) Issued at 956 PM CDT Mon Jun 8 2026

As the aforementioned trough axis shifts eastward through the area, low chances of showers/thunderstorms return primarily north of the TN River through tomorrow afternoon. Trends in recent models have shown a drier forecast, which is why we've allowed the Flood Watch to expire and currently do not anticipate the need for another one. That being said, a low risk of flooding does remain if any heavy rainfall is able to materialize tomorrow (especially in NE AL where antecedent rainfall has caused very saturated soils). In this area, the Weather Prediction Center has continued to hold a Slight risk (level 2 of 4) for excessive rainfall causing flash flooding on Tuesday. By Tuesday evening, upper level ridging begins to creep into the area from the west and rain chances subside from west to east. Mostly dry conditions are forecast Wednesday and Thursday, with low chances (30% or less) of rain limited to NE AL and portions of southern middle TN as a frontal boundary stalls in the Appalachian region.

As the upper level ridge shifts over the area, a warming trend will begin with highs reaching the upper 80s to mid 90s by Thursday. Heat indices during this time are forecast to reach the mid 90s to around 100 degrees. Overall, our Heat Risk is forecast to push into moderate to major impacts, which will affect those who are sensitive to heat as well as anyone without cooling/hydration. We continue to urge everyone to remain hydrated, avoid outdoor labor during the hottest part of the day (if possible), and wear lightweight/cool layers. Additionally, avoid leaving any pets or people in vehicles.

LONG TERM

(Thursday night through Monday) Issued at 956 PM CDT Mon Jun 8 2026

The aforementioned warming trend will continue through the early weekend, with highs reaching the mid 80s to low 90s Friday along with heat indices in the upper 90s to around 100-103 degrees. One thing to keep an eye on with Friday will be how much cloud cover and returning rain chances affect these forecast temperatures. There continues to be model uncertainty in how far south a cold front travels and subsequent rain chances on Friday. Heat continues through the weekend (although with lower heat index values) as highs warm into the mid 80s to low 90s both Saturday and Sunday. Despite this forecast remaining below Heat Advisory criteria, we reiterate to remain hydrated and take precautions to prevent heat related illness.

AVIATION

(12Z TAFS) Issued at 640 AM CDT Tue Jun 9 2026

Intermittent MVFR conditions may continue through 14z this morning at both terminals due to light fog and have handled this with a TEMPO for now. Thereafter, VFR conditions will continue for most of the rest of the period as fog dissipates and cloud cover breaks up. A low chance for an afternoon storm or two as well as patchy fog early Wednesday morning late in the period, but confidence was too low to mention in the TAF at this time.

HUN WATCHES/WARNINGS/ADVISORIES

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