I bought a packet of dry Nottingham ale yeast before hurricane Sandy hit here in Hoboken, NJ. I put it in my fridge hoping to use it within the next few days. The hurricane hit, we lost power and the fridge went warm. The yeast stayed dry (unlike my kitchen, bathroom and bedroom), and then cooled again when the power came back on. Did I lose my yeast? Did the cooling, warming and cooling kill it, or should it still be good in the vacuum sealed packet? Any thoughts would be appreciated.