1. On October 30, 1921, the Los Angeles Biltmore Hotel, considered one of the city's most iconic landmarks, opened its doors for the first time. The hotel, which features Spanish-Italian Renaissance architecture and luxurious amenities, has hosted many notable events throughout its history, including the Academy Awards.

2. In 1938, on October 30, Orson Welles broadcasted his famous radio adaptation of H.G. Wells' novel "The War of the Worlds." The fictional news reports caused widespread panic among listeners who believed that an actual alien invasion was underway. The incident became known as the "War of the Worlds panic."

3. October 30, 1974, marked the end of the longest kidnapping case in U.S. history at the time. Patricia Hearst, granddaughter of publishing magnate William Randolph Hearst, was kidnapped by the Symbionese Liberation Army on February 4, 1974. She was subsequently brainwashed and participated in several of the group's robberies before being captured and serving time in prison.

4. On October 30, 2012, following a magnitude-7.8 earthquake in British Columbia, a tsunami warning was issued for the coast of California. While the waves never caused significant damage, many people in the area evacuated as a precaution.

5. Finally, on October 30, 2019, California Governor Gavin Newsom declared a state of emergency due to wildfires throughout the state. The fires, which were exacerbated by strong winds and dry conditions, destroyed homes and forced thousands of people to evacuate.