California Earthquake: M5.7 Quake in Sierra Nevada: 23 May 2013

Location and tectonic setting of the Sierra Nevada earthquake, 23 May 2013. Image credit, USGS

The May 23 California earthquake, an M5.7 in Sierra Nevada, is not unusually large for the Golden State, but is a significant quake for the region.

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Earthquake Precursors: Signs of a Coming Tremor?

Animals reportedly fled before the 1959 Montana earthquake. Image credit: USGS

What’s the best earthquake indicator? There are many ways to determine if a quake is coming but hindsight is currently the best measure of future tremors.

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Moore, Oklahoma Tornado: Understanding the Wind and Storms

NASA recorded this image of the Oklahoma superstorms from space. Image by NASA

Why does Oklahoma have so many tornadoes? The term ‘Tornado Alley’ isn’t just a joke, the area really is prone to twisters, due to a number of factors.

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Chile, Kamchatka and California: Earthquakes in the Week of 15-21 May 2013

The week's earthquakes, 15-21 May. Image credit: USGS

This has been a busy week, in terms of earth tremors, with over 1500 registered seismic events recorded. What were the most significant quakes of the week?

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GPS Data May Improve Tsunami Warnings, New Study Shows

Pattern of waves generated by the 2011 Japan tsunami. Image credit: NOAA

Tsunamis are difficult to predict, but strike fast and can be deadly – so how to evacuate efficiently? GPS technology could be the answer for high-risk coastal areas.

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