<![endif] the "no-js" class is for Modernizr. The Jawbone Blog Home Jambox UP Headset Store Support Home 8.25.14 Eugene Mandel Data News +0 Google+ Facebook Twitter LinkedIn The South Napa Earthquake was the strongest to hit Northern California in 25 years. Our data science team wanted to quantify its effect on sleep by looking at the data recorded by UP wearers in the Bay Area who track their sleep patterns. Napa, Sonoma, Vallejo, and Fairfield were less than 15 miles from the epicenter. Almost all (93%) of the UP wearers in these cities suddenly woke up at 3:20AM when the quake struck. Farther from the epicenter, the impact was weaker and more people slept through the shaking. In San Francisco and Oakland, slightly more than half (55%) woke up. As we look even farther, the effect becomes progressively weaker — almost no UP wearers in Modest...