john's picture

Tropical Storm Wednesday

Not too much happening in earthquakes right at the moment, but the tropical cyclone - typhoon - hurricane season is about to ramp up, according to the forecasters.  So take a look at our sister social networking site or the master link at for some content and descriptions about the current state of the global storm system.

Steve's picture

Teton Trouble

In the 1960s, the U.S. Bureau of Reclamation drew plans for Teton River Dam in eastern Idaho. Like most of their type, Teton River intended to be of multi-value to nearby inhabitants in the forms of irrigation, flood control, hydro-power and recreation. The earth-fill barrier, 93 meters high and 520 meters across fitted out in May, 1976.

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M6.5 Earthquake Near Blenheim, NZ

A magnitude M6.5 earthquake has just occurred (2:31 UTC) near Blenheim, NZ, a town on the northern end of South Island, just across the Cook Strait from Wellington.

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Earthquakes in the Philippines

The Philippines islands site on a complex tectonic plate boundary where major earthquakes frequently occur.  Here the Philippine Sea plate meets the Pacific plate, the largest tectonic plate, as well as lesser plates such as the Amurian plate, the Okhotsk plate, the Mariana plate, and the Eurasian plate.  [1]

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The New Open Hazards Collaboration and Social Network

Open Hazards is pleased to announce the new Collaboration and Social Network.  You can find it by clicking on or under the OH Community tab on this site (click on the Social link). 

Effective planning and response to natural hazards and other disasters depends on establishing strong collaboration and social networks. On this new collaboration network site you can:

john's picture

Super Typhoon Utor

We are now moving into the thick of hurricane/typhoon/tropical cyclone season.  The image here is a NASA MODIS satellite photo of super typhoon Utor that struck the Philippines today, monday August 12, 2013. 

Steve's picture

Lake Tahoe Unwrapped

Most folks visit Lake Tahoe to do some skiing in the winter, to partake of fresh mountain air in the summer, or to see a show and drop a few bucks at the casinos on the Nevada side in any season.

Likely, most Tahoe visitors aren’t aware that the Lake itself hides a big secret. To discover what that is however, we need to drain the thing --  but don’t worry, we’ll fill it back up before we leave.

john's picture

Forecasting New Zealand Earthquakes: Tradeoff Between Location and Likelihood

The recent two blogs discussed the M6.5 Cook Strait earthquake, and the prospects for other events.  In the first post, I discussed a region of 100 km radius around the epicenter of the earthquake.  This circular area gave a somewhat low probability of an M> 6 earthquake within the next year.

john's picture

Forecast Contours for New Zealand Earthquake, Cook Strait

Just in the last few minutes, signficant numbers of aftershocks have continued to accumulate.  I show a screenshot of the forecast contours in the region for M>6.5 earthquakes over the next 1 year (not yet updated to reflect the current event).  It can be seen there are significant areas of enhanced probability to the north of North Island, and off the soutwest coast of South Island.


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