Scaredd :(

We had a powercut on wednesday due to heavy snow, power was out for a day but its back now my herman tortoise is 2 years old. We did not put him into hibernation this year because we are goin to next year. Anyway my tortoise had no heat for day some heat would of been trapped in the vivarium though. We covered it in blankets to try and keep the heat in there. Do you think my herman tortoise will be alright i have heard they are quite hardy soo....