I agree with Ariel W. all the way around. Great happy hour specials, especially in Madison where I have yet to find an awesome happy hour.
The smoke stack was amazing! Especially for $3, totally worth it. Order two! The oysters were good, many varieties available.
Service was extremely slow...perhaps they expected fewer patrons on a Tuesday night, but we sat with empty glasses for at least 20 minutes, waiting to order a second drink and food (first drink was ordered from the bar).
Nevertheless, I'll give the Tempest a second chance. If they expand their happy hour food offerings and hire a few more servers, this could be a regular go-to happy hour spot.