UPDATE (Feb. 17, 9:54 a.m.): According to California Highway Patrol, all southbound lanes of Interstate 5 are now open.
UPDATE (Feb. 17, 2017, 8:43 a.m.): Two lanes are still closed as crews clean up the oil spill left from the incident.
California Highway Patrol is estimating that it will take at least another hour for crews to finish cleaning the lanes. If possible, avoid the area.
UPDATE (Feb. 17, 2017, 8:13 a.m.): Two lanes are closed on southbound Interstate 5, according to California Highway Patrol.
There is no estimated time for reopening the lanes.
UPDATE (Feb. 17, 2017, 7:09 a.m.): The passenger vehicle hit by a semi truck that jackknifed on southbound Interstate 5 was a white BMW. The person in the vehicle is reporting head injuries after spinning out into the wall.
The fire in the BMW has since been put out.
California Highway Patrol is also reporting there is a small diesel spill, which is mixing with the rain. Kern County Environmental Health is being called, as the diesel is spilling on the Kern County side.
Traffic is being routed to the far right lanes.
UPDATE (Feb. 17, 2017, 7:04 a.m.): According to the California Highway Patrol, the semi hit a passenger vehicle after it jackknifed on southbound Interstate 5.
The semi is blocking the roadway, and the passenger vehicle is now on fire. It is unclear how many people are involved and if there have been injuries reported.
According to California Highway Patrol, a semi-truck has jackknifed on southbound Interstate 5 at Frazier Mountain Park.
CHP says the vehicle was driving at a high speed prior to the incident. One of the semi's tires flew off into a northbound lane and is now a traffic hazard. There are high winds and heavy rain in the area.
It is unclear if there are injuries at this point, rescue response has been called to the area.
This story is developing.