Earthquake Information Chronological Earthquake Index 1988 Upland Earthquake. The needles swung off the scale signaling that a 6-magnitude temblor had occurred near a spot. Dec 29 1988 0137 am Los Angeles Dec 29 1988 0837 GMT San Bernardino County Estimated. LOS ANGELES -- A sharp earthquake measuring 50 on the Richter scale jolted Southern California early. The 1987 Whittier Narrows earthquake occurred in the southern San Gabriel Valley and surrounding communities of..
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Earthquake Information Chronological Earthquake Index 1988 Upland Earthquake. The needles swung off the scale signaling that a 6-magnitude temblor had occurred near a spot. Dec 29 1988 0137 am Los Angeles Dec 29 1988 0837 GMT San Bernardino County Estimated. LOS ANGELES -- A sharp earthquake measuring 50 on the Richter scale jolted Southern California early. The 1987 Whittier Narrows earthquake occurred in the southern San Gabriel Valley and surrounding communities of..
Earthquake Information Chronological Earthquake Index 1988 Upland Earthquake. The needles swung off the scale signaling that a 6-magnitude temblor had occurred near a spot. Dec 29 1988 0137 am Los Angeles Dec 29 1988 0837 GMT San Bernardino County Estimated. LOS ANGELES -- A sharp earthquake measuring 50 on the Richter scale jolted Southern California early. The 1987 Whittier Narrows earthquake occurred in the southern San Gabriel Valley and surrounding communities of..
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