Thursday, December 05, 2024

Tsunami Warning Cancelled

At 10:44 this morning three iPhones in our house blared an emergency warning. A 7.0 earthquake had occurred in the waters off Humboldt County, over 260 miles north of San Francisco. The earthquake was just close enough--and Foster City just close enough to the Bay--that we could not disregard the dangers of a tsunami.

And so it was that our eyes were glued to the TV on the off chance that an evacuation would be announced. To our relief the tsunami warning was canceled within the hour:
Temblor CEO and Stanford Geophysics lecturer Ross Stein gave ABC7 News an explanation for the change. He said the earthquake initially appeared to be a 6.0-magnitude shallow earthquake, the kind that involves “a lot of vertical motion of the seafloor, which tends to produce more tsunamis.”

It didn’t take long, however, for scientists to realize it was a much larger 7.0-magnitude earthquake and a different type of earthquake that is unlikely to produce a large tsunami, he said.

It was “a very typical, garden-variety event on this northern extension of the San Andreas Fault, which we call the Mendocino Fault Zone. In that respect it doesn’t move the sea floor up and down very much,” said Stein.
Of course, we were relieved that there was no tsunami. It would have drastically inconvenienced our Christmas shopping activities!

But seriously...this was another demonstration of the inadequacy of our evacuation plans. We did have "go" bags at the ready, every car had at least half a tank, and we did have an idea where to seek temporary shelter. However, what to take and what to leave behind had not been finalized, I had not digitized and stored key documents in the cloud, nor had we updated our wills since 2002 (we do have draft revisions that have not been executed).

At least we know what our top New Year resolutions will be.

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