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It turns out that flooding from ‘atmospheric’ rivers is
capable of causing as much or more damage to California as a magnitude 8
earthquake. The ‘Great Flood of 1862’, the result of 45 straight days of rain,
transformed central California into a 300-mile sea. A similar event today could
swamp 25% of the state and cause $725 billion in damages according to a report
by Adam
Brinklow of the Curbed San Francisco.
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Atmospheric River (AR) descending on CA Feb 2017 |
This weekend California is on watch for its second atmospheric
river event of the winter of 2017. No one anticipates a mega-storm like that of
1862, but flooding and infrastructure are likely to occur.
For more on the
impacts of a mega-storm see the US Geological Survey’s ‘Overview of the
ARkStorm Scenario’ released in 2010.
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Blue inboard of coast shows potential flood zones of AR. |