The annual autumnal observance in the central business district of the specified coastal Californian city, typically celebrated on October 31st, involves a significant public gathering. This event often includes costume-wearing participants, pedestrian traffic within the downtown area, and themed decorations adorning local establishments. For example, numerous businesses might offer Halloween-related promotions, contributing to the overall festive atmosphere.
The significance of this yearly occurrence lies in its contribution to community spirit and local economic activity. It provides a venue for residents to express their creativity through costumes and engage in social interaction. Furthermore, it supports local businesses by attracting increased foot traffic and promoting sales during what might otherwise be a slower period. Historically, such events have evolved from smaller, more localized celebrations into larger, more organized public gatherings.