Extreme Meteorologist Reed Timmer provides a breakdown of what terms like wall clouds and mesocyclones look like in reality as parts of South Carolina take shelter under tornado warnings.
REED TIMMER: I'm tracking a supercell to the west of Jefferson, South Carolina. It does have rotation and actually has a long-lived deep mesocyclone, even though it is a very compact storm. You can see the structure above it. This is the mesocyclone or the rotating updraft.
This right here is the wall cloud that's beginning to form. This is to the west of Jefferson right now, Jefferson, South Carolina. And this is definitely a forming wall cloud here.
We do have inflow at my back, moist inflow flowing into this with southeasterlies. This is the updraft base of the storm. The rain and the hail falls downstream of that, just a little bit northeast of where that updraft is located.
This is called the forward flank gust front right here as well. Inflow streaming into this intensifying mesocyclone now has a pretty well-formed wall cloud as you can see here to the west of Jefferson. And the tornado potential continues with these storms and lifting off to the north across Eastern North Carolina.
There is even a threat of strong tornadoes through the evening tonight. The Storm Prediction Center has a 10% hatch area for significant tornadoes just to the northeast of here, Eastern North Carolina. But right now we've got a supercell here in the far northern portion of South Carolina just south of that North Carolina border, just west of Jefferson.
We have a developing wall cloud, an intensifying mesocyclone. And the storm certainly has tornado potential as it moves off to the east, northeast at 35 knots.