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Maciek416 | karma 811 | avg karma 4.2 · 2022-05-02 07:53:15

Big droughts have come and gone over the years. Here’s a nice historical data explorer: https://www.drought.gov/historical-information?dataset=0&sel...

__MatrixMan__ | karma 5321 | avg karma 2.13 · 2022-05-02 09:53:27

> The SPI is the number of standard deviations that observed cumulative precipitation deviates from the climatological average

Is "the climatological average" the same as https://en.wikipedia.org/wiki/Climatological_normal? if so then it's a pretty misleading metic. You can deviate from "normal" in both directions roughly at the same frequency, all the while dragging normal below a "you can survive this" threshold.

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