I almost missed the first bud! Thank goodness for intuition. I woke up at 4:30 this morning thinking it might hail. I got up and put my car in the garage. As my feet were wet from going out, I went into the laundry room to dry them off. Hmm, maybe I should check the cereus...
Yikes! One of the three buds had bloomed!
Here's what it looked like yesterday in the late afternoon:
And here's what it looked like at 4:30, in the rain (and me without my glasses):
There will definitely be another post about this plant.