Damaging hail threatens Helene-ravaged North Carolina ahead of heavy rain, flash flood risk in Southeast

The recent weather pattern that brought heavy rainfall to parts of Texas and Louisiana is now shifting eastward, leading to a prolonged threat of severe weather and flash floods in the coming days. The forecast indicates that a broad area across the South and mid-Atlantic regions will experience an increasing risk of thunderstorms, starting with a cluster of storms developing in Middle Tennessee and moving east into northern Alabama, North Georgia, and western North Carolina.

As the storms track along a stalled cold front over the weekend, a significant amount of rainfall is expected from Florida through the Carolinas, with some areas potentially receiving up to a foot of rain. This prolonged rainfall poses a threat of flash flooding in the Southeast that could last through the weekend.

Thursday’s severe storms are expected to bring large hail and damaging winds to cities like Knoxville, Tennessee, and Asheville, North Carolina, which are still recovering from the aftermath of Hurricane Helene. The Storm Prediction Center has issued a Level 2 out of 5 risk for severe thunderstorms in the region, including a potential tornado threat.

The unusual weather pattern known as an Omega block is responsible for the stagnant system, causing prolonged periods of warmth in some areas and steady rain in others. The National Weather Service in New Orleans warns of moderate flood stages in many streams and rivers across the lower Mississippi Valley, leading to weeks of high water levels.

Computer model forecasts predict widespread rainfall of 2-5 inches over the next five days, with some areas possibly receiving up to a foot of rain by next week. Cities such as Tallahassee, Florida; Savannah, Georgia; and Charleston, South Carolina, are expected to receive significant precipitation, with rainfall totals approaching double digits in some areas.

While the flash flood threat remains elevated throughout the week and into the weekend, it is not currently considered a top threat due to the drought conditions in many areas along the Eastern Seaboard. However, forecasters are closely monitoring the potential for strong to severe storms, hail, damaging winds, and the risk of flash flooding, which is the deadliest weather-related hazard in the U.S.

According to NOAA data, an average of 127 people die from flash flooding each year, highlighting the importance of staying vigilant and taking necessary precautions during severe weather events. Just 6 inches of fast-moving water can knock an adult off their feet, while a foot of floodwater can carry away a car. Stay informed, stay safe, and be prepared for the possibility of severe weather and flash floods in the coming days.