[Update: Aug. 25, 10:30 a.m.] Caltrans announced the southbound 101 through Gaviota has reopened. The northbound 101 is down to one lane at the moment. State Route 154 across the San Marcos Pass remains closed. Caltrans advises postponing travel through Santa Barbara County or considering alternate routes.
[Update: Aug. 25, 10:15 a.m.] The Goleta office of the California Highway Patrol released information regarding the two accidents this morning.
At 2:10 a.m., on the northbound 101 near "Signal Oil," aka Eagle Canyon Road, the driver of a 2016 Hyundai collided with a second vehicle in the slow lane, Officer Jonathan Gutierrez reported. The second vehicle left the scene, headed north on the highway. The Hyundai swerved onto the right shoulder and landed between the highway lanes. The driver, as yet unidentified, was pronounced dead at the scene by AMR paramedics.