August 20, 2061 Californian tornado outbreak (wsc)

The August 20, 2061 Californian tornado outbreak was a historic outbreak in which occurred over the state of California. Not only was the outbreak responsible for a record 27 tornadoes, but also for the only 2 known violent tornadoes recorded since records began in 1950. 17 people are known to have died during the outbreak, of which 8 were killed during a single tornado, which was later rated an EF5 on the Enhanced Fujita Scale. $840 million in damages was done during the outbreak, of which $750 million was done during the historic EF5, making it the costliest Californian tornado in history.

Synopsis
On August 18th, a tropical disturbance developed off the Baja California Peninsula coast, and moved towards the state of California. On the 19th, the NHC designated the system as Tropical Depression 14E, which had embedded supercells within the circulation as it moved ashore in California on the 20th. Once the tropical cyclone had made landfall in the morning, it underwent a rapid extratropical transition, undergoing explosive deepening as it did so, to a record Pacific Northwest pressure of 927 hpa, transitioning into a serial derecho in the process. At 2pm PST, the first tornado touched down in San Diego, pushing cars off the Pacific Coastal Highway, claiming an EF1 rating by the NWS. By 7pm PST, 20 tornadoes in total throughout California. However, over the next 90 minutes, the 2 violent tornadoes of the outbreak touched down, and were rated EF4 and EF5, respectively, causing extreme devastation to the areas hit by them. The last tornado touched down at 9:18pm PST, causing EF0 damages to trees, before lifting 5 minutes later.