textproduct: Huntsville

KEY MESSAGES

Updated at 938 PM CDT Sun Apr 26 2026

- Low chance for severe thunderstorms late Monday night into early Tuesday morning. - Low to medium chance of severe thunderstorms Tuesday evening into Tuesday night.

- Rainfall totals of 2 to 2.5 inches are forecast.

NEAR TERM

(Today) Issued at 231 AM CDT Mon Apr 27 2026

A decaying MCS can be seen across the MO Bootheel into S IL with convective debris in the form of high level cirrus drifting southeastward towards the Tennessee Valley. Temperatures this morning are quite mild for this time of year with morning lows only in the upper 50s to lower 60s. As we progress through the day, mostly sunny skies will warm temperatures back into the mid 80s. Latest CAM runs show some isolated thunderstorms developing across W TN into N MS along a theta-e gradient. However, these should not reach the local forecast area as they push eastward into a capped environment. Take some time today while the weather is nice to make your severe weather plan as the pattern becomes much more active over the next few days. More details in the following section.

SHORT TERM

(Monday night through Wednesday) Issued at 938 PM CDT Sun Apr 26 2026

There remains much uncertainty on convective scenarios Monday night through Wednesday. The capping inversion which the NAM seems to keep holding onto would suppress convection until Tuesday potentially. However, most other models are indicating the cap will not hold off storms that move in from the northwest Monday Night. The main shortwave and low pressure system moving through the Upper Midwest will continue lifting through the Great Lakes, with the cold front stalling out across KY western TN into AR. Clusters and line segments along this front will drop southeast into southern TN and north AL late Monday night into early Tuesday morning as 8h winds veer more westerly and slow southward progression. While there remains a low risk of strong to severe storms with this activity, CAMS suggest a weakening trend during this period. This activity will influence the potential destabilization later Tuesday into Tuesday night as additional shortwave impulses cross the southern Plains into the MS and TN valleys. Clusters of supercell convection should erupt over MO and AR and spread east into KY, TN during the evening and overnight hours as the west- southwesterly low level jet increases. Additional clusters evolve into a potential MCS over the mid South during the overnight hours that tracks east-southeast through southern middle TN and AL during the late night hours with a decent risk of damaging winds and perhaps tornadoes. All this being said, uncertainty remains considerable, so more changes in this forecast can be expected. The cold front doesn't arrive until Wednesday.

LONG TERM

(Wednesday night through Sunday) Issued at 938 PM CDT Sun Apr 26 2026

A bit of a pattern change will shape up for the long term period in the wake of the cold frontal passage on Wednesday. Some lingering showers could last through Wednesday night before a drier and cooler airmass begins to move into the area on Thursday. Northwest flow will remain aloft through much of the long term period as high pressure expands over the Plains and Midwest. A few weaker wave disturbances traversing around the upper trough located to our northeast may result in a few showers during the late week period, but confidence in this remains low and likely will until the aforementioned storm system clears the area mid-week. Overnight lows will dip into the 40s Thursday night through the remainder of the long term period.

AVIATION

(06Z TAFS) Issued at 1210 AM CDT Mon Apr 27 2026

VFR conditions with light winds continue overnight. S to SE winds increase during the afternoon with gusts up to 20 knots. Showers and thunderstorms will move in from the NW after 00z bringing some MVFR vsbys. However, confidence in timing is low at this time and left within a prob 30 group.

HUN WATCHES/WARNINGS/ADVISORIES

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