1930s Was By Far The Hottest Decade In The US

Untampered NOAA thermometer data shows that the past decade tied for the second hottest with the 1950s, and was much cooler than the 1930s. The pattern of warming is nearly identical to the first half of the last century.

ScreenHunter_157 Jan. 15 11.26

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About stevengoddard

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10 Responses to 1930s Was By Far The Hottest Decade In The US

  1. tckev says:

    And on January 15, 1932

    Up to 2 inches of snow whitened the Los Angeles basin of California. The Los Angeles Civic Center reported an inch of snow, and even the beaches of Santa Monica were whitened with snow, in what proved to be a record snowstorm for the Los Angeles area.
    Also 18 inches fell at Julian, 17 inches at Mt. Laguna, 14 inches at Cuyamaca, and 6 inches at Descanso, CA.

    Remarkably in some winters it gets real cold even in the 1930s.

  2. Watch out for bad data Steve… I’m noticing a few months with extra figures in the data, like “1127″ instead of “112″ (meaning 11.2°C)… I just happened to notice that when my macros bombed. There is a quality flag that is marked that I happened to pull in as well when doing monthly averages. I guess I’ll have to go back now and eliminate all of those and treat those as missing data.

    What are you doing with the occasional missing day or bad quality point? I’m thinking I will set a limit of, say 2 missing or bad days per month. If it isn’t better than that I might throw the whole year out. Either that or or I might fill them in with an average of days close in time. Lots of bad data out there. 2012 especially. I’m wondering if missing days are being planted. October on is a mess.

  3. Hi Steve,

    When you say, “Untampered NOAA thermometer data”, are you refering to data before their early October 2012 conversion from USHCN Ver 2.0 to 2.5?

    Tom Harris

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