tornado watch until 11pm

All that sunshine during peak heating hours today has destabilized the atmosphere, and SPC has placed the entire area under a tornado watch until 11pm. The good news is that most of the Chicago metro area is on the fringe of the main threat area, but a tornado or another otherwise severe storm is still possible anywhere in the area. The prime time for storm development will be 5-6pm, and a couple of models are putting a supercell into the Chicago area around 7pm. We'll see -- the atmosphere is juiced but getting the development (let alone the exact timing and location) of severe storms right is difficult.