Good morning! We have a few showers out there now - mainly light - but like yesterday, the main "action" will hold off until the afternoon and evening hours. These peak heating hours will bring the most instability, and with that frontal boundary lingering over the area, showers and t-storms will easily fire through the PM.
We'll watch for an isolated strong or severe storm, but the main threat today will be heavy downpours (you can feel all the moisture in the air when you step outside!). Localized water problems/flooding may result - so keep that in mind if you live in a flood prone area or if you've seen a few rounds of heavy rainfall over your home.
Showers and storms may linger into the overnight, as well. While I don't expect the rain to be as widespread through the overnight/early morning hours on Thursday, there could be areas that see some heavy downpours or isolated t-storms linger through the sleeping hours.
HPC guidance suggests up to an inch and a half of rainfall could result from today's rain - you can see the QPF image (valid 8 AM today until 8 AM Thursday) at right.
The frontal boundary will stay over the area Thursday and even into Friday, so high rain/t-storm chances will stick with us through the end of the week. Despite below-normal temperatures (highs in the low/mid 80s in the Upstate, upper 70s in WNC), dewpoints in the upper 60s and low 70s will keep humidity in oppressive territory.
The weekend forecast will bring continued storm chances, but it doesn't look like it will be quite as unsettled on Saturday and Sunday. Temperatures will work back closer to normal by then - and the humidity will remain high.