Damaging thunderstorms are possible, and widespread heavy rain is likely on Saturday. The entire Tennessee Valley will be impacted. A Flash Flood Watch is in effect for Limestone, Morgan, Lauderdale, Colbert, and Franklin counties in Alabama from 7 AM Saturday to 1 AM Sunday.
A storm system coming together over Arkansas and Oklahoma is already triggering tornado warnings and severe thunderstorms warnings Friday evening. This is the storm system we are tracking for the Tennessee Valley for Saturday. A brief tornado is possible, but the main threat from any severe thunderstorms will be damaging winds up to 60-70 mph. Plenty of uncertainty still exists in the evolution of this storm system, so be sure to stay current on updated weather forecasts. Confidence is increasing for a risk for damaging winds. This forecast is for a worst case scenario. Remember, changes in both the timing and intensity of this system are possible.
A first line of potentially damaging storms will cross the Mississippi state line and move into Northwest Alabama from around 7-8 AM through 11AM-noon. Heavy rain may be persistent, but the damaging wind threat will ease as the line of storms tracks eastward.
A second line of potentially damaging storms will cross the Mississippi state line and enter Northwest Alabama around 1 PM to 3 PM, then it will track across I-65 and along I-565 toward Huntsville from 3 PM through 5 PM, then it tracks into Sand Mountain from 4 PM through 6 PM. The risk for damaging winds will fade from west to east through the evening. It will end entirely by around midnight.
Damaging wind can do damage similar to that of tornadoes. Rainfall amounts of 3 to 6 inches are possible, which can lead to localized flash flooding.
Stay weather aware and be ready to move to your severe weather safe spot if dangerous weather threatens. Stay with WAAY 31 News on air and at WAAYTV.com, our social media, and the WAAY 31 Severe Storm Tracker App for the latest updates. Be ready to move to a place of safety if damaging weather threatens.