With lots of breaking news out of Japan and Libya, CNN and Fox News Channel continued to see ratings boosts last week. For the fourth straight week FNC was the number two channel in all of cable in primetime behind only USA network, averaging 2.114M total viewers. In total day the network placed fifth overall, with 1.270M viewers.

CNN placed in the top 10 for the second straight week, placing ninth in primetime with 1.453M total viewers and eighth in total day with 987,000 viewers.

The Turner networks dominated the ranker, with three of the top 10 networks in primetime and five of the top 10 in total day, including CNN.

MSNBC placed 27th in primetime with 808,000 total viewers and 28th in total day with 484,000 viewers.

FNC’s “The O’Reilly Factor” was the only cable news program to crack the top 40, and it did so twice, placing 21st and 35th.

The number one cable program was the investigate journalism series “Jersey Shore.” The MTV show uses the cinema verite approach to examine the social lives of ape-like creatures, as they engage in rowdy behavior on a beach somewhere in the Garden State.

The full network and program rankers are after the jump.

Cable Time Period Rank – Week of 3-14-11 (Live+SD)

Cable Program Rank – Week of 3-14-11 – Live + SD