November 05, 2007 (Computerworld) -- Within minutes of Tuesday's 5.6 magnitude earthquake that hit the San Francisco Bay Area, the number of cell phone calls on the Verizon Wireless network skyrocketed.

Twenty minutes after the 8:04 p.m. quake, instead of the normal 300,000 calls made between 8 p.m. and 9 p.m. in one area of Santa Clara County, the call volume soared to 2.3 million. Many of those calls were probably made by people trying to check on friends or relatives who lived in the vicinity of the temblor.

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