Went from 3.11 to 3.36 on Wednesday.
Then up to 3.47 today.
I just missed my chance to top off when it was 3.11 by about ten minutes. Drove by my usual station and saw it was still 3.11, but I had seen 3.08 the day before at a Speedway that was three miles out of my usual territory. Drove over there, and they had already changed to 3.36. Turned around and hurried back, but I was too late.
Still had half a tank, so I figured I could last it out until it dropped back a dime or so, like it usually does 3-4 days after the initial spike. But, nooooooooh.
Looks like fluctuating prices are going away for a while.