I was walking up my road back home at 11:30 PM when the street lights momentarily went dim and immediately car alarms were set off. I thought it was only a local car alarm, but as soon as it was turned off, I heard dozens of other alarms going in the distance, all over town. I thought perhaps a power transformer had blown up causing an electrical surge but immediately dismissed that as an option owing to the wide spread coverage of the sounding alarms, which to my mind leaves only one other option: an electro-magnetic pulse. Lightning can cause such a pulse but there wasn't any, nor did I hear thunder. I leave you to draw your own conclusions.