Latest On California’s Drought

NOT A LOT OF PEOPLE KNOW THAT

By Paul Homewood

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http://www.ncdc.noaa.gov/cag/time-series/us/4/0/pcp/12/9/1895-2016?base_prd=true&firstbaseyear=1895&lastbaseyear=2016&filter=true&filterType=binomial

Now that NOAA data for September has been published, we can look at Californian precipitation for the last hydrologic year, which runs Oct to Sep.

Total precipitation in the last 12 months ended up slightly above average. Prior to this, there was a run of four particularly dry years.

Maybe one reason why the recent dry spell has appeared to bee so pronounced is that the state had a number of unusually wet years in the 1980s and 90s.

But looking at the longer term trends, there have been similarly dry spells, notably in the 1920s and early 30s.

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http://www.ncdc.noaa.gov/cag/time-series/us/4/0/pcp/12/9/1895-2016?base_prd=true&firstbaseyear=1899&lastbaseyear=2016

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