The 22-year-old, Van Nuys man was taken to UCLA Medical Center with severe brain injuries.
The tree fell at 4410 N. Sepulveda Blvd.
Police will screen for impaired drivers from 8 p.m. to 2 a.m.
The man also struck a power pole and apartment building.
A bomb squad is on scene responding to a report of "something suspicious."
On Sunday, May 12th, a 24-year-old man was observed in the courtyard area of the Church on the Way, 14300 Sherman Way.
The house was put out quickly.
A vehicle went over an embankment on the 405 freeway southbound, Sunday afternoon.
The shooting happened in Van Nuys.
The burglaries happened in Van Nuys and North Hollywood.
The incident early Wednesday morning revealed nothing.
It took nearly 100 firefighters just over one hour to knock down the Sumac Drive fire.
Isolated wind gusts up to 70 mph are expected on some peaks in the Santa Monica Mountains.
He is also charged with bringing a firearm into a jail, along with two counts of conspiracy to commit a crime.
Check out the report from SpotCrime and CrimeMapping and local arrests.
Property must be cleaned prior to May 1 so that it can pass the first fire department inspection.