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California Earthquake Authority Proposes New Menu of Policies

In a press release dated October 23, 2014, the California Earthquake Authority, the primary provider of earthquake insurance within the state of California, has proposed an increase in the number of new policy types.  These include deductibles of 5%, 10%, 15%, 20% and 25%.  With this substantial increase in the types of available policies, homeowners will need to assess their risk and exposure more than ever.  The  free tool

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Back to Blogging

Sorry for the hiatus.  I was teaching 2 classes last term and trying to keep up with research and other duties.  In the following weeks, I will be discussing the run-up to the decadal United Nations World conference on disasters.  Stay tuned!

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The Shimabara Disaster

In August 1791, the twelfth California Mission was established in my town of Santa Cruz. Why bring this up? Well, the very next year hosts today’s topic, The Shimabara Disaster. Let’s set the date on the “way back machine” at 1792; the place – Shimabara Peninsula, southern Kyushu, Japan. 

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Hurricane Gonzalo: A Fabian Redo?

As I write this, hurricane Gonzalo is 150 miles SSW of Bermuda. Its winds have weakened a bit to 125 MPH with a central pressure of 947 mb.  It appears to be shaping up similar to hurricane Fabian in 2003.  Fabian passed Bermuda with sustained winds of 115 MPH and a central pressure of 950 mb.

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Acqua Alta All Over Again

Yogi Berra, the pithy catcher for the New York Yankees, once quipped “It’s like Déjà vu all over again.”  Today’s story might rightly seem like “Déjà blog all over again.”

In two earlier entries

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King fire in Northern California, September 20, 2014

Image from the NASA MODIS instrument on the Acqua satellite.  The fire continues to burn out of control. More details here.


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Radar Image of the Napa Earthquake

Recently the science community has developed a new way to image the ground displacement from earthquakes.  It's called  Synthetic Aperture Radar Interferometry, or InSAR for short.  In fact NASA has recently signed an agreement with the Indian Space Agency to fund the launch of a radar satellite for earthquake and climate studies.

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Is Earthquake Insurance Worth the Cost? - II

Two interesting stories today, one in the Sacramento Bee newspaper, and the other on Reuters.  The consumers quoted in the stories do not think insurance is worth the cost.  The providers of insurance urge more people to sign up.  What most people also don't realize is that no reimbursement for loss of contents will occur until after the deductilble on the structual damage is met.

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Montecello-Berryessa Dam

I’ve blogged here many times about dam breaks, both real and hypothetical. Three of the best known ones in America were the Johnstown Flood of 1889, the Saint Francis Dam failure of 1928 and the Teton Dam collapse of 1976. Those disasters released 16 million, 45 million and 330 million cubic meters of water respectively.

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Napa Earthquake and Future Earthquakes in Northern California

The figure below from the Bill Ellsworth at the USGS is a depiction of the earthquake history of Northern California up to about 1990.  In the Bay Area, the last earthquake of significance was the magnitude ~6.9 Loma Prieta earthquake of October 17, 1989.  Last sunday's magnitude 6 Napa earthquake was in fact the strongest earthquake north of San Francisco and south of Eureka  since 1906. 


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