These videos display how information of the Japanese earthquake spread across Twitter in the first hour after the quake. They were released by Twitter on 29 June 2011.

Twitter state that they saw a 500% increase in Tweets from Japan as, “people reached out to friends, family and loved ones in the moments after the March 2011 earthquake”.

The first video shows personal messages – the volume of @replies travelling into and out of Japan in a one-hour period just before and then after the earthquake. Replies directed to users in Japan are shown in pink; messages directed at others from Japan are shown in yellow.



Personal messages from Japan, originally uploaded by @Twitter.

This second video shows global retweets of Tweets coming from Japan for one hour after the earthquake. The senders’ original Tweets are shown in pink; Tweets retweeted by their followers in the hour after the quake are in green.



Spread of information, originally uploaded by @Twitter.

Both videos were produced by @miguelrios.

NOTE: Also see this blog post ‘Breaking Bin Laden: visualizing the power of a single tweet‘ on how one speculative Tweet an hour before Obama’s Presidential announcement of Bin Laden’s death by @keithurbahn spread across the network, and why.