Loud metallic pounding sounds coming from the north.Last night at around 11 pm, my husband and I were out on our east deck. We were looking at the sky, noting that it is finally clear. It has been raining and very windy for a few days. Just rain and cloud and wind. No thunder and lightning. So it's finally clear, but we can hear thunder... although it didn't sound like thunder when we heard it again. It was far away like thunder but close as well. It kept happening almost rhythmically. It was like a rapid, heavy pounding for approximately 3-5 seconds with a pause of maybe 30-45 seconds. Then again and again. It reminded me of someone pounding on a garage door or metal roof. It felt like it was coming from the sky in the north but there wasn't any cloud or anything. Whatever it was must of been huge because it was far away yet quite loud. My husband was out earlier and said it was happening for awhile. A total time of about 40 minutes. I asked my daughter and her boyfriend if they heard anything while they wer! e out walking in Birds Hill park about an hour before, they said they didn't, but noted a strange light that they thought was the moon at first peeking through a bit of cloud. They also noted that if it was the little sliver of a moon, it was in the north, which they know couldn't be right. By then, the moon would be approaching the west, since it was around 10pm. Kind of a coincidence.