Oh Dear ...that seems to ALWAYS happen to me during my hatches (living rural ) ...and its the " horror of all horrors" . I actually had a power outage several hours the day scheduled for "lockdown" and i was REALLY fretting and sweating it out ...but I can tell you that ...you just may be fine with your hatch ..justperhaps a little later hatch and try NOT to Fret ! As sometimes in nature also I have noticed a broody stray for a day (during a colder day once or twice) and return back to nest and we know that nature always is best for hatching. Think positive and pray for no more outages !!