Thursday, July 8, 2010

Southern California shaken by magnitude 5.4 earthquake

A map of the Inland Empire (California) metrop...Image via Wikipedia

  • According to U.S. Geological Survey, the quake hit at 4:53 p.m. near Borrego Springs, about 28 miles south of Palm Springs. It was followed by several small aftershocks.
    There were no immediate reports of damage or injuries, but some residents said the quake caused glass to break.
    Its the latest in a string of powerful of quakes to hit Southern California in the last few months, ever since a 7.2 quake hit the Mexicali area on Easter Sunday.
    [Updated at 5:07 p.m.: The USGS downgraded the quake to 5.4 magnitude. The Los Angeles Fire Department said it has not received reports of serious damage or injuries. Residents in Riverside County told The Times they felt a sharp jolt but have not witnessed major damage.

  • The residents are accustomed to an occasional temblor, but Laws said, "It was a little bit more than we're comfortable." At least for the evening, it will give the sleepy town something to chat about in the off season. "This place is going to be just atwitter," Laws said. "We'll be in the coffee shop, talking about all kinds of things."]

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    Southern California shaken by magnitude 5.4 earthquake

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    A seemingly heightened period of seismic activity in Southern California continued as a magnitude 5.4 temblor struck the region late Wednesday afternoon. Occurring near Borrego Springs, the earthquake was felt across San Diego County and into Los Angeles.
    According to the U.S. Geological Survey (USGS) the quake struck at 4:53pm approximately 15 miles north-northwest of Borrego Springs or 30 miles south of Palm Springs.
    Centered at a depth of 8.7 miles, residents through Los Angeles and further north to Ojai reported feeling the temblor. It was also felt across San Diego to the south and into western Arizona and the southern tip of Nevada.

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    No major damage or injuries were reported from the quake although emergency officials said they received numerous calls inquiring about the temblor.
    Unlike the magnitude 5.7 quake that struck the area last month, the USGS said the new quake was not an aftershock to the deadly Eastern Sunday earthquake that rattled the U.S. / Mexico border.

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    The USGS said the new quake occurred along the Coyote Creek fault of the San Jacinto fault zone. The fault is considered to be potentially one of the more dangerous in the area due to its proximity to high population areas. The Southern California Earthquake Data Center (SCEDC) said the fault has the potential to let loose with a magnitude 6.5 to 7.5 quake.

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    Magnitude 5.4
    • Wednesday, July 07, 2010 at 23:53:33 UTC
    • Wednesday, July 07, 2010 at 04:53:33 PM at epicenter
    Location 33.420°N, 116.489°W
    Depth 14 km (8.7 miles)
    Distances 20 km (15 miles) NNW of Borrego Springs, California
    40 km (25 miles) SW of Indio, California
    45 km (30 miles) S of Palm Springs, California
    730 km (455 miles) SE of SACRAMENTO, California
    Location Uncertainty horizontal +/- 0.2 km (0.1 miles); depth +/- 0.4 km (0.2 miles)
    Parameters Nph=144, Dmin=10 km, Rmss=0.27 sec, Gp= 18°,
    M-type=regional moment magnitude (Mw), Version=6
    Event ID ci10736069

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