'Made the point!' Rob Lowe describes 'seismic' experience of 50th birthday

An 4.7 magnitude earthquake shook southern California this morning. For actor Rob Lowe, it was quite a wake-up call, especially considering today is his 50th birthday:

If I had any remaining doubt that turning 50 was seismic, this a.m.'s Hollywood earthquake made the point! #TheBigOne

— Rob Lowe (@RobLowe) March 17, 2014

With a 2.7 aftershock as a bonus birthday greeting.