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Posts Tagged ‘San Andreas Fault’

M4.4 Quake Strikes Near Soledad, California

Posted by feww on January 21, 2015

SEISMIC HAZARD
HEIGHTENED SEISMICITY IN CALIFORNIA
SCENARIOS 700, [500,] 08, 07, 02
.

M4.4 Earthquake strikes ENE Greenfield, California

Centered at 36.434°N, 120.971°W the quake occurred at a depth of 10.0km (6.2mi), said USGS/EHP.

EQ Details
Magnitude: 4.4Mw
Event Time: 2015-01-20 13:21:36 UTC
Location: 36.434°N 120.971°W depth=10.0km (6.2mi)
Nearby Cities:

  • 27km (17mi) ENE of Greenfield, California
  • 28km (17mi) NNE of King City, California
  • 31km (19mi) E of Soledad, California
  • 60km (37mi) SE of Hollister, California
  • 242km (150mi) S of Sacramento, California

FIRE-EARTH Earthquake Forecasts for California

FIRE-EARTH Science Team has suspended its research on California seismicity to protest Internet censorship, Google’s manipulation of information, theft of FIRE-EARTH intellectual property and additional reasons, as stated earlier on the blog.

The Team has suspended its research also on Japan seismicity due to the resurgence of militarism in that country and additional reasons that have been stated previously.

Recent Earthquakes

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Significant Quake Strikes NE of Los Angeles Area

Posted by feww on June 13, 2014

SEISMIC HAZARD
HEIGHTENED GLOBAL SEISMICITY
SCENARIOS 08, 07
.

M3.5 earthquake strikes the foot of Ralston Peak, California

Centered at 34.308°N, 117.499°W the quake occurred at a depth of about 11.5km (7.2mi), according to USGS/EHP.

EQ Details

Magnitude: 3.5Mw
Event Time: 2014-06-13 13:35:20 UTC
Location: 34.308°N 117.499°W depth=11.5km (7.2mi)
Nearby Cities:

  • 13km (8mi) SW of Oak Hills, California
  • 14km (9mi) SSE of Phelan, California
  • 20km (12mi) WNW of Crestline, California
  • 22km (14mi) SW of Hesperia, California

EQ Location Map

Ralston Peak quake 13jun14
Ralston Peak Earthquake Location Map. Source: USGS/EHP

FIRE-EARTH Earthquake Forecasts for California

FIRE-EARTH Science Team has suspended its research on California seismicity, Japan ditto.

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Posted in Earthquake Hazard, Earthquake Information, Earthquake news, earthquake report, Significant Event Imagery, significant events | Tagged: , , , , , | Leave a Comment »

Significant Quake Strikes Near Villa Park, California

Posted by feww on January 16, 2014

M3.8 Earthquake Strikes 11km E of Villa Park, California

The event was followed by another shock measuring M3.2, which occurred 5km N of Fontana, California.

quake villa park 16jan2014
Earthquake Location Map. Source: USGS/EHP

Earthquake Details

Event Time: 2014-01-16 07:40:06 UTC
Location: 33.833°N, 117.688°W depth=8.5km (5.3mi)
Nearby Cities

  • 12km (7mi) WSW of Corona, California
  • 13km (8mi) ESE of Yorba Linda, California
  • 19km ENE of Santa Ana, California
  • 21km E of Anaheim, California
  • 57km ESE of Los Angeles, California

Second Event

M3.2, 2014-01-16 09:50:03 UTC, 34.140°N 117.439°W depth=1.7km (1.1mi), 5km N of Fontana, California

Related Links

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Significant Quake Strikes Near Fontana, California

Posted by feww on January 15, 2014

M4.4 Earthquake Strikes 5km N of Fontana, California

The event followed three other shocks measuring greater than 2.5Mw that struck California over the past 24 hours.

calif quakes

EQ Calif
Earthquake Location Maps. Source: USGS/EHP

Magnitude: 4.4Mw
Event Time: 2014-01-15 09:35:19 UTC
Location: 34.144°N, 117.446°W depth=5.2km (3.2mi)
Nearby Cities:

  • 5km (3mi) N of Fontana, California
  • 8km (5mi) WNW of Rialto, California
  • 9km (6mi) NNW of Bloomington, California
  • 9km (6mi) W of Muscoy, California

Other Events

  • M2.6, 30km ENE of Soledad, California, 2014-01-15 08:30:15 UTC, 36.574°N 121.037°W depth=8.2km (5.1mi)
  • M3.2, 31km ENE of Soledad, California, 2014-01-15 08:18:14 UTC, 36.574°N 121.033°W depth=8.9km (5.5mi)
  • M3.3, 2km W of Hollister, California, 2014-01-15 04:52:35 UTC, 36.857°N 121.430°W depth=9.5km (5.9mi)

(Source: USGS/EHP)

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Oil Spills, Earthquakes and Faults

Posted by feww on October 31, 2009

Oil Spills NO Different to Earthquakes

They Both Spell Disaster, Occur Because of Faults and Happen Regularly in San Francisco Bay

Earthquakes occur in SFB because of geological faults: San Gregorio fault, San Andreas fault, Mt Diablo fault… and Hayward fault. Oil spills occur there as a result of oil companies faults: Arco’s fault, BP’s fault, Chevron’s fault, ConocoPhillips’s fault, Exxon’s fault… and Shell’s fault!

You’d forgiven for thinking there must be an oil spill and an earthquake in the SFBA each day! Because you’d almost be right.

dubai star
The oil slick from the Dubai Star, an oil tanker  located at Anchorage 9 south of the San Francisco-Oakland Bay Bridge. Photo: KGO-TV/ABC7 via Mercury News. Image may be subject to copyright.

The latest spill, a blackish filthy brown slick of bunker fuel, covered a 250-meter by  4-km stretch of San Francisco Bay on Friday, caused by a “refueling mishap” between an oil tanker, Dubai Star, and a service barge alongside, the U.S. Coast Guard reported.

The slick has not reached land and is in a narrow band because there is little wind and much of it may burn off amid warm weather, giving clean-up crews the upper hand in containing it, Coast Guard Captain Paul Gugg told reporters at a press conference.

“The weather is very cooperative. We’re all over it.” Gugg said.

Gugg said the scope of the contamination does not compare to the massive spill in 2007 of fuel oil from another tanker in the San Francisco Bay that spread across its shores and killed thousand of birds.

However,  Gugg didn’t say how much bunker fuel had spilled into the bay.

The spill comes eight days before the two-year anniversary of the vessel Cosco Busan striking the Bay Bridge in dense fog, ripping open its hull and spilling more than 53,000 gallons of fuel oil that fouled much of the shoreline along the well-known California waterway.

The Busan spill killed more than 2,500 birds and deposited oil on 200 miles of coastline, Pacific Environment was quoted as saying.

Meanwhile,

The unscrupulous oil giant BP has been fined $87 million for failing to remove safety hazards at its massive Texas City refinery, the 3rd largest in the US, where an explosion in 2005 killed 15 workers and injured 180 others.  The Occupational Safety and Health Administration (OSHA) cited 270 violations at the oil refinery, officials said.

In 2005, BP was fined $21.3 million and ordered to repair hazards at their refinery, but it didn’t

“Lawyers acting for victims of the disaster suggested that the renewed action could put BP in breach of a plea agreement two years ago in which it pleaded guilty to a single felony and paid $373m to settle a string of criminal charges.” UK’s Guardian reported.

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Posted in big oil, bird sanctuaries, Cosco Busan, Earthquakes, marine sanctuaries, oil spill, San Francisco Bay | Tagged: , , , , , , , , , , , , , , | 2 Comments »

California Earthquake Forecast – Update 3

Posted by feww on September 24, 2009

For background and latest update see:

Up to three earthquakes measuring magnitude 6.2 or greater could strike Western US in 2009

California Earthquake Forecast: UPDATE #3

Magnitude 7.6  to  7.9 earthquake could strike the SF Bay Area, northern California in 2009

FEWW Moderators Forecast a magnitude 7.6 to 7.9  earthquake and two possible aftershocks measuring about 5.5 Mw (subject to the magnitude of the mainshock) for the San Francisco Bay Area, northern California in 2009.

Details of EQ Forecast

  • Magnitude: 7.6 to 7.9 Mw
  • Provisional date:  September 28, 2009
  • Date uncertainty: ~ 90 Days
  • Epicenter: 37° 52′ 20″N, 122° 15′ 10″W
  • Depth: 9.0 km
  • Depth uncertainty: ±2.8 km
  • Location: ~2.88 km (1.79miles ) east of Berkeley Fire Departments: Fire Prevention & Disaster Preparedness (CA 94702).
  • Location uncertainty:
    • Up to 5 km to the west of Hayward Fault
    • Up to 14 km NNW within a 5-km corridor along the Hayward Fault
    • Up to 22 km SSE within a 5-km corridor along the Hayward Fault
  • Probability of of occurrence 0.8 [77%]

Map of Hayward Fault
Map of N California Fault Lines. Source: USGS

Satellite map
Satellite map of forecast epicenter.
Source: Google Maps [See terms of use for copyright information.]

Hayward EQ Forecast
FEWW Bay Area Earthquake Forecast Uncertainty Zone.
Source: Google Earth [See terms of use for copyright information.]

Note: This forecast does NOT preclude the possibility of other seismic events in the area at any time.

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Posted in aftershock forecast, California earthquake, California earthquake forecast, earthquake forecast, seismic event forecast | Tagged: , , , , , , , , , , , | 57 Comments »

California Earthquake Forecast – Update 2

Posted by feww on August 11, 2009

California forecast earthquake may be more powerful than originally estimated

FEWW Moderators have upgraded their forecast for a California earthquake to a Magnitude 7.9 event.

For initial forecast see California Earthquake Forecast 2009 [March 24, 2009]

For Update # 1 see:  California Earthquake Forecast 2009 – UPDATE [August 4, 2009]

San Andreas Fault


The topographic texture of western California is controlled by the San Andreas fault system, the tectonic expression of the Pacific plate sliding northwestward along the western margin of the North American plate. Hundreds of miles long and up to a mile wide, the San Andreas Fault Zone has been active since its original development in the Tertiary.  About 10 percent of the present plate motion is compressional, which means horizontal forces are shortening and wrinkling the crust along the fault zone. This movement has created the parallel coastal northwest-southeast mountain ranges such as the Coastal Ranges along California’s central coast. Comparatively quiet during the period between the 1906 San Francisco earthquake and the 1989 Loma Prieta event, the fault is again showing activity. Image and caption: nationalatlas.gov


Fault map for San Francisco Bay Area from http://www.abag.ca.gov/bayarea/eqmaps/pickcity.html, annotated and colors modified by User: Leonard G. Released into the public domain (
Leonard G. ).

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Posted in aftershock forecast, California earthquake, California earthquake forecast, earthquake forecast, seismic event forecas | Tagged: , , , , , | 16 Comments »