Similar spring temps here in NCal!

Surely, it would be great to hear the most recent advancements in emergency rewarming protocols from a SAR Pro, as I can't recall where I have read out about the benefits of a cold water (~50F) starting temps for that (I believe - somewhere here). But even from a basic physics: if you apply too high temp gradient to the tissue - it will start expanding immediately, but ice crystals will expand slower and less evenly, what might cause more damage to tissues on the cellular level. That's why current cryoanabiosys techniques require injection of special cryoprotectant into the blood system prior to freezing in order to avoid problems with fast unfreezing.