A strengthening upper level storm is moving through the middle Atlantic just before the weekend and it’s expected to generate a round of powerful storms across the Palmetto State. Winds will be quite gusty state-wide ahead of the storms, with winds through the day occasionally gusting to around 35 miles per hour. This flow of warm and moist air from the southwest will help feed developing thunderstorms into the evening ahead of a cold front. Thunderstorm winds are the biggest severe weather concern, with peak storm gusts of 70 miles per hour possible.
The Storm Prediction Center has upgraded the majority of the state into the ENHANCED risk category for severe storms Friday afternoon and evening. Storms will are expected to first develop in the Tennessee mountains near midday and intensify and form into a line before moving into the Upstate early in the afternoon. Along this line of storms, straight line winds could gust over 70 miles per hour. However, a few isolated tornadoes are possible as the powerful straight line winds could lead to small areas of rotation. Small hail under 1 inch is possible, but large hail is not expected.
Storms will be moving into the Midlands Friday afternoon, close to the afternoon rush hour. In addition to the severe threat, rains will also be intense and will significantly reduce visibility and traction during this busy drive time. Flash flooding is not likely, the fast motion of the storms should limit rain totals.
By sunset, the severe weather threats will have moved into the Lowcountry and offshore. As rain ends Friday night, winds will turn to the northwest, ushering in cooler air. High temperatures in most areas will be in the 70s Saturday.
