It's that time of the year when birds chirp, flowers bloom and the Washingtonian species flies back to Southern California for financial nourishment.

Yes, get ready for another edition of Obamajam. It starts today. The Los Angeles Police Department has a cheat sheet for you commuters, below.

Obamajam is a bit of a misnomer, though. The U.S. Secret Service, the LAPD and other agencies seem to have figured out years ago how to get the commander-in-chief around here without ruining Westsiders' Whole Foods trips.

However, we will be hit with an extra helping of jam this time: Obama's visit starts Thursday afternoon, the worst traffic day in Los Angeles. And, just as he's leaving, former Secretary of State Hillary Clinton will be here. 

Obama is here for a Pacific Palisades roundtable hosted by Charlie Sheen's best friend, TV producer Chuck Lorre, and for a Beverly Hills dinner party at the home of Tyler Perry. Both events are Democratic fundraisers.

He heads to San Francisco late Friday morning.

Though she's not the traffic generator Obama is, Clinton could make some road waves too.

Variety reports she will be here Friday for lunch with Westfield Corp. co-CEO Peter Lowy and for a late-afternoon soiree at the home of HBO executive Michael Lombardo. Friday night she's expected to kick it with Tobey Maguire. 

Here are the Obama-related areas to avoid, according to an LAPD statement:

Thursday June 18, 2015
The area around Sepulveda Boulevard between Lincoln Boulevard and Century Boulevard between

2 p.m. to 3 p.m.

The area around Pico Boulevard and 23rd Street between 2 p.m. and 3 p.m.

The area around Barrington Avenue and Palms Boulevard between 2 p.m. and 3 p.m.

The area around Centinela Avenue and Bundy Avenue between 2 p.m. and 4 p.m.

The area around Bundy Avenue and Interstate 10 Freeway between 2 p.m. and 4 p.m.

The area around 405 Freeway and Sunset Boulevard between 2 p.m. and 4 p.m.

The area around Evans Road and Monorca Drive from 1 p.m. to 6 p.m.

The area around Napoli Drive and Sunset Boulevard from 1 p.m. to 6 p.m.

The area around Sunset Boulevard and 405 Freeway from 3 p.m. to 6 p.m.

The area around 405 Freeway and Mulholland Drive from 3 p.m. to 6 p.m.

The area around Mulholland Drive and Coldwater Canyon from 3 p.m. to 6 p.m.

The area around Coldwater Canyon and Beverly Drive from 5 p.m. to 8:30 p.m.

The area around Beverly Drive and Sunset Boulevard from 5 p.m. to 8:30 p.m.

The area around Wilshire Boulevard and Santa Monica Boulevard from 5 p.m. to 8:30 p.m.

Note: Merv Griffin Way between Wilshire Boulevard and North Santa Monica Boulevard will be closed between 2 p.m. on June 18, 2015, to 12 p.m. on June 19, 2015.

Credit: Pete Souza for the White House

Credit: Pete Souza for the White House

Friday June 19, 2015
The area around Wilshire Boulevard and Santa Monica Boulevard from 8 a.m. to 11 a.m.

The area around Santa Monica Boulevard and Century Park East from 8 a.m. to 11 a.m.

The area around Century Park East and Pico Boulevard from 8 a.m. to 11 a.m.

The area around Pico Boulevard and Overland Avenue from 8 a.m. to 11 a.m.

The area around Overland Avenue and National Boulevard from 8 a.m. to 11 a.m.

The area around National Boulevard and Interstate 10 Freeway 8 a.m. to 11 a.m.

The area around Interstate 405 Freeway and Centinela Avenue 8 a.m. to 11 a.m.

The area around Arroyo Boulevard and Mountain Street 8 a.m.to 12 p.m.

The area around Mountain Street and the 210 Freeway 8 a.m. to 12 p.m.

The area around 134 Freeway and Colorado Boulevard 8 a.m. to 12 p.m.

The area around Colorado Boulevard and Figueroa Street 8 to 12 p.m.

The area around York Boulevard and North Avenue 51 9 a.m. to 12 p.m.

The area around Yosemite Drive and North Avenue 56 9 a.m. to 12 p.m.

Notes: The following are road closures in the City of Pasadena;
Seco Street between West Drive and Lincoln Avenue from 7 a.m. to 2 p.m.

Rosemount Ave between Prospect Terrace and North Arroyo Boulevard from 7 a.m. to 2 p.m.

West Drive between Linda Vista Avenue to Salvia Canyon Road from 7 a.m. to 2 p.m.

Rosemount Avenue between North Arroyo Boulevard and Seco Street from 7 a.m. to 2 p.m.

Stay cool.

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