Friday's disaster drill starts with a fictional tsunami off the coast of California.
(CNN) -- If your Facebook page or Twitter feed lights up with news of a tsunami off the California coast, don't get too worried.
At noon ET Friday, a drill was launched by natural disaster experts at San Diego State University to test how social media would be used to respond to a crisis.
Exercise 24 (X24) is being run by the university's Immersive Visualization Center.
Participants from 15 countries, including the United States, organizations such as the United Nations and Red Cross, and other business, nonprofits and individuals will be involved.
The idea is to test the speed and widen the scope of responses to a major disaster, focusing on how social media sites like Facebook and Twitter can be used.
"Ultimately, the goal is to get there faster, respond more effectively to save lives, communities, businesses, etc.," read a written release on the drill.
Organizers said that all messages about the