I am here - thanks for stepping in. Thankfully when I got home the power was back on. I am not sure how long it was out but it was certainly over 30 minutes as it went out about 5 minutes after I got back from the hospital and by the time my friend picked me up about half an hour had gone. Apparently some houses lost power 2 hours previously and were still out when I left.
I was quite shocked as it must be several years since we had a power cut lasting more than about 5 minutes.