I had some hot embers smoking on top of the lower ceramic guide on my bandsaw when cutting some wet white oak sections for turning. The smoke came up through the throat plate and caught my attention, and I then lifted the plate and saw the smoking red ember and removed it. I continued to cut the blank, and took it over to my lathe. A little later, I smelled a burnt odor and checked again and found a larger ember glowing in the same spot. Needless to say, this was the first time in about 20 years of using the bandsaw (at least 15 with the ceramic guides) and never having any sign of a hot ember. I am glad that the wood was very wet and smoldered and did not burst into a flame, but it was definitely increasing and could have fallen onto some dry dust and shavings on the floor.
I did open the lower door and made sure that no embers had fallen into the lower housing. Just a good warning that I want to share. I did go buy a new fire extinguisher and installed it to be ready for the next time.