Hurricane Sonia (1989) was the final and likely most destructive Hurricane of the 1989 East Pacific Hurricane Season. Hurricane Sonia was a very unusual East Pacific Hurricane, developing and working Northeast despite working against Ocean Currents and 63 Degree Fahrenheit waters. Sonia was not the farthest north recorded East Pacific Hurricane, but Sonia is the farthest north Landfall from a East Pacific Hurricane. Sonia is most well known for making landfall in San Francisco at the time a 6.9 Magnitude Earthquake struck and devastated San Francisco, California.