Sunday, September 3, 2017

There are lies, damned lies, and statistics

Still, this is probably none of the above; this is actual science: Heat, Smoke, and Fire Assault Western States: All-Time Record Heat in California

California’s Bay Area has been the focal point of the weekend’s most extraordinary heat. Temperatures soared to 106°F in downtown San Francisco on Friday and 102°F on Saturday. Friday’s reading was the hottest ever measured in downtown SF, where temperatures have been observed since 1874. Friday’s 106°F handily topped the previous record of 103°F from June 14, 2000, and Saturday was only the second high of 102°F in downtown history, matching Oct. 5, 1987. “To put this in perspective, the average high temperature for the city these two days is just 71°F,” said Chris Burt, who lives in the East Bay region. “Friday night’s temperatures failed to fall below 85°F at several hill locations near me (I dropped to 81°).”


On the Marin County coast, the Point Reyes lighthouse station hit 91°F on Saturday, breaking its all-time record of 90°F from Oct. 3, 1917, almost exactly a century ago. Remarkably, the temperature at Point Reyes at midnight Friday night was a sweltering-for-the-location 86°F—just 4°F below the previous all-time high.


One of the most naturally air-conditioned cities in the contiguous U.S. is Eureka, on California’s far northern coast. On Saturday, Eureka matched its all-time record high of just 87°F , first set on Oct. 26, 1993. This is the lowest all-time high for any reporting station in the nation, according to Chris Burt. Eureka’s weather records extend all the way back to 1886.

1874, 1886: those are not the longest-duration measurements you would hope for.

But they are quite significant; this is not a rounding error.

We're talking nearly 150 years of observed facts.

Things are definitely changing.

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