Quakes jolt Northern California

<p>The shaking apparently doesn’t stop for long at The Geysers, at the northern Sonoma County-Lake County border, with three earthquakes over the weekend registering a 3.0 or above, reported the U.S. Geological Survey.</p><p>A magnitude 3.2 quake hit at about 6:30 p.m. Sunday. It was centered about two miles east of The Geysers and four miles southwest of Cobb, in Lake County.</p><p>A 3.0 quake shook the area at about 8:30 a.m. Sunday. It too was centered in the heart of The Geysers steam fields, about one mile northeast of The Geysers and four miles southwest of Cobb.</p><p>On Saturday, a magnitude 3.3 temblor struck at 1:30 p.m. This one was about two miles east of The Geysers and four miles southwest of Cobb.</p><p>Small quakes such as these are extremely common and occur about 90 times a month, attributed to the injection of wastewater and removal of steam to run power plants.</p><p>Most are in the 1.5-magnitude range, but the magnitudes have been steadily increasing for five years.</p><p>Meanwhile, earthquakes recently rattled other North Bay communities.</p><p> An earthquake registering 3.6 hit about four miles east of Willits Friday evening. And earlier last week two quakes, both a 3.0, struck in the Healdsburg community within 24 hours of each other.</p>