I recently sent out a Twitter update about this - the weather pattern is about to shift. The impacts will be minimal in Southern California, though the record-breaking heat will not return for the rest of the month. Instead, San Diego and surrounding areas will remain dry and seasonably mild through at least January 25.
However, the Pacific Northwest and Eastern U.S. will see some big changes. A persistent ridge (highlighted below) has been the dominant feature over the past three weeks for San Diego and all of California. This has kept the entire state hot and extremely dry.
