A stalled storm system and surging Gulf moisture are locking in five straight days of flooding rain, gusty winds, and possible hail — and Tuesday through Wednesday may be the worst of it.
NWS Advisory: Showers and thunderstorms likely through Thursday for Huntsville, Madison, and Decatur
North Alabama woke up to wet roads and a gray sky on Monday — and if forecasters are right, residents won’t be seeing much sunshine until the weekend. A persistent pattern of warm, moisture-laden air flooding in from the Gulf of Mexico is fueling a cycle of daily thunderstorm activity that the National Weather Service says will grip the Tennessee Valley through at least Thursday.
The threat isn’t just inconvenient. Low-lying roads, storm drains, and underpasses across Huntsville and surrounding communities face a real risk of flash flooding, especially during Tuesday and Wednesday when storms are expected to become most widespread and intense.
“A few stronger storms could produce gusty winds, brief hail, and torrential downpours capable of flooding low-lying roads and poor drainage areas.”
The peak danger window arrives Tuesday afternoon and stretches through Wednesday evening. As daytime heating intensifies beneath the warm, humid air mass, clusters of thunderstorms will develop and in some cases re-fire over the same areas — a pattern that meteorologists call “training” and that is especially effective at producing dangerous flash flooding in a short period of time.
Drivers on Interstate 565, Memorial Parkway, and Highway 72 should prepare for sudden visibility drops and standing water during afternoon commutes. Never attempt to cross flooded roads — turn around, don’t drown.
Despite the relentless rain, temperatures will stay stubbornly warm — climbing into the lower to mid-80s each afternoon through midweek. That unusual warmth for late May is actually part of the problem: it fuels the instability that keeps firing thunderstorms every day. Residents can expect a sticky, early-summer feel with humidity values that make it feel several degrees hotter than the thermometer reads.
The broader Southeast is sharing North Alabama’s misery. Active weather is stretching from the Lower Mississippi Valley all the way into the Carolinas as multiple low-pressure systems pull in tropical moisture. Alabama sits squarely in the corridor favoring the heaviest repeated rainfall through midweek.
There is a light at the end of the tunnel: long-range models suggest storm chances will gradually ease by late next week. Above-normal temperatures, however, are expected to expand deeper into the region heading into early June, so relief from the heat may take longer to arrive than relief from the rain.
5-Day Forecast · Huntsville, AL
- Mon 81°F Showers likely
- Tue 82°F Storms
- Wed 85°F PM storms
- Thu 85°F Storm chance
- Fri 83°F Storms likely
