So I woke up this morning (PST) to a dropped Bitcoin value. Tried to log into Coinbase to buy some bitcoin while it was down low. But Coinbase was crashed. It was having issues yesterday as well. Got a message that I had to reverify my ID to even think of buying bitcoin (I've been buying from them for over a month). Took me all day to get my ID successfully loaded via my cell phone camera. So, in the meantime, bitcoin goes up $80.
Then I found an article that points out that as Coinbase's website crashed, the Yuan went up, and Bitcoin dropped.
An exert:
"There are several factors as to why this may have happened. First, the Chinese Yuan has risen somewhat, but also Coinbase's website went down at a certain point."
Also, you can check out Coinbase's Status Page: