Another weekend for the potential of severe weather across the midlands.
Here is the set up:
Strong low pressure to our west will pump plenty of Gulf moisture into the state as a warm front attached to the system moves through the midlands during the day. The front creates what is called “isentropic lift” bringing us warm more humid air, the atmosphere will become unstable and the movement of this air is hauling extremely fast which adds to “shear”…this is a change in direction of the air the higher you go in the atmosphere. In order to get severe weather and tornadoes, you must have wind shear.
I believe there will be two bouts with severe weather today (or the chance of severe storms) the first is midmorning as storms move in from Georgia along with the warm front, the second is late this afternoon into this evening as the air becomes very unstable due to even greater lift and a bit of drier air in the upper layers of the atmosphere.
The entire system moves out by early Sunday and behind the cold front we’ll see mostly sunny skies and much warmer temperatures. Warmer temps behind the cold front? Yes! We’ll have what is called “down sloping” This is air that moves down from the Appalachian mountains, it warms quickly and the air mass becomes stable allowing things to settle down. Down slopping won’t last too long as we’ll be in the middle 80s Sunday to the lower 70s Monday.
What I’m Looking For Today:
A few thunderstorms that develop this morning and late afternoon could reach severe limits and we would expect:
- Damaging Winds (more than 60mph)
- Heavy Rain (potential flash flooding)
- Dangerous Lightning
Severe storms happened quickly and often with very little notice. I've attached a map of the severe weather outlook for today. South Carolina is in the slight risk yellow.
Keep close to my twitter and our website (along with the WIS weather app) for the latest.