It's official: President Obama has landed, cue widespread lament on L.A.'s roadways.
Air Force One touched down at Los Angeles International Airport shortly after 2 p.m., kicking off a two-day L.A. itinerary packed with fundraisers and public appearances.
Tonight, Obama is headed for a fundraiser at actress Gwyneth Paltrow's home after first heading to Santa Monica for a town hall session on the economy. Drivers on the affected routes can expect the usual traffic headaches, which are expected to last well into the night.
Already, commuters were taking to Twitter to express dread and frustration.
"Obama just landed in LAX and of course no ones is allowed to depart or land until he leaves. This better not make me miss my later flight," said Twitter user Diana, who goes by @TheCaLiDee.
LAX traveler Jack Burke was equally unimpressed, posting on Twitter: "Landed at LAX and now we're sitting on the taxiway and we cant move cuz Air Force One just landed. THANKS OBAMA!"
Meanwhile, commuters lamented the inevitable, including Twitter user @Sarah, who posted: "obama traffic is possibly the worst thing in the world ever."
Los Angeles police warned motorists that the president's motorcade will affect streets in Santa Monica, Brentwood, Westwood and Beverly Hills. Here's the list (all times are approximate):
Centinela Avenue between Ocean Park and Olympic boulevards, from 1:30 p.m. to 3:30 p.m.
Lincoln Boulevard between Pico and Wilshire boulevards, from 1:30 p.m. to 3:30 p.m.
Santa Monica Boulevard between 26th Street and Ocean Avenue, from 3:30 p.m. to 5 p.m.
Ocean Avenue between Pico and San Vicente boulevards, from 3:30 p.m. to 5 p.m.
San Vicente Boulevard between Ocean Avenue and Bundy Drive, from 5 p.m. to 7:30 p.m.
Sunset Boulevard between Allenford and Barrington avenues, from 5 p.m. to 7:30 p.m.
Sunset Boulevard between Allenford Avenue and Roxbury Drive, from 5 p.m. to 7:30 p.m.
Beverly Glen Boulevard between Sunset and Santa Monica boulevards, from 7:30 p.m. to 9 p.m.
Wilshire Boulevard between Sawtelle and Santa Monica boulevards, from 7:30 p.m. to 9 p.m.
Obama's motorcade is to be on the streets again Friday as he attends a Democratic National Committee fundraiser before heading to G. Bonelli Regional Park in San Dimas, where he's expected to announce his executive order carving out about half the Angeles National Forest to create the San Gabriel Mountains National Monument.
From there, Obama is to depart for San Francisco, where more fundraisers are on the itinerary.
For news as it happens in California, follow @JasonBretWells