After yesterday's 8.0-magnitude earthquake created a tsunami around the Samoa islands, a tsunami advisory threatened the Pacific Coast. That threat, according to reports, has been lifted. A very slight tsunami lift was measured along the coast. "The tsunami amplitude - the measurable surge above normal sea level - measured a half-foot at Monterey Bay Harbor, slightly more than one foot at Arena Cove in Mendocino County, and about one foot in San Francisco."