Tuesday evening is shaping up to be a rough one for residents across the lower Mississippi Valley. The National Weather Service has issued a severe thunderstorm advisory for Arkansas, Louisiana, Mississippi, and Tennessee, with peak wind gusts expected to reach up to 60 mph. There's also a chance of a brief tornado touching down overnight.
The storm system is part of a broader weather pattern that has been active this week. Meteorologists are tracking a broken line of thunderstorms that's pushing eastward, bringing with it the potential for damaging winds and isolated rotation. According to the NWS, the storms are moving in tandem with a robust midlevel trough and an associated cold front, which is helping to fuel the instability.
Forecasters have been monitoring the situation closely. The NWS noted that a moist air mass is in place ahead of the storms, with dewpoints in the lower 70s across Louisiana and middle to upper 60s extending northward into the Mid-South. Despite some concerns about lapse rates, the weak surface-based buoyancy and curved low-level wind profiles could support embedded rotating cells within the line, as well as shallow, transient rotating showers just ahead of it.
While the overall severe threat is expected to remain fairly marginal and localized, the possibility of a brief, weak tornado or two, along with locally damaging wind gusts, cannot be ruled out. The NWS emphasized that the core of the low-level jet shifting northward and the weak buoyancy should keep the worst of the weather in check, but residents should still stay alert.
For those in the affected areas, the NWS has issued a few key safety tips: stay indoors and away from windows during the storm, have a plan in place in case of a tornado warning, and avoid driving through flooded roadways. It's also a good idea to secure loose outdoor items that could become projectiles in high winds.
This storm comes on the heels of other severe weather events across the country. Just last week, a damaging storm battered three states, and earlier this month, severe storms targeted drivers with hail and flooding risks. The pattern of active weather shows no signs of letting up.
Residents in the four states should monitor local weather alerts and be prepared to take action if warnings are issued. The storms are expected to move through the region over the next few hours, so the threat should diminish by early Wednesday morning.
Stay tuned to your local forecast for the latest updates, and remember: when thunder roars, go indoors.
