8:55 PM: Over the past week or so, we’ve received scattered reports of unexplained booms in the Lincoln Park vicinity. No fire/crime/injury reports resulted, so they’ve remained a mystery. We’re uphill from south Lincoln Park and just finally heard one for ourselves. We’re monitoring the scanner/911 log and if anything results, we’ll update. Nothing so far, and it’s been five-plus minutes. We also launched a discussion on the WSB Facebook page and there are several reports of people seeing a flash in the ferry-dock area at the time.
9:54 PM: An hour’s gone by, with no report of injury/fire/damage/power outage etc. (not even a 911 dispatch) So, a mystery, for now.