The Great ShakeOut returns to WA to promote earthquake readiness The Great ShakeOut is back, Washington. About 1.6 million Washingtonians are registered to join over 58 million others across the world today in International ShakeOut Day. At 10:16 a.m. local time, people at work, school or home will participate in earthquake drills. And what’s a better occasion than Mariners fans causing a teensy earthquake themselves? A stadium full of roaring fans made the ground shake at T-Mobile Park whe...