Weekly Viz 2023-02-27
San Francisco Weekly Precipitation
The Bay Area has seen pretty extreme weather this winter. During the year-end holiday season, we had crazy rainfall, and last week we even got some snow! Therefore, this week, I am looking at the precipitation data in Downtown San Francisco since 2000. The data can be downloaded here.
My Visualization
This week’s visualization took me a long time to create and adjust… I bucketed precipitation into weekly total, then used cos and sin functions to transform the total precipitation numbers into coordinates on the 2-dimensional plate. The further the point is from the center, the higher the weekly precipitation.
Please notice that all the visualizations are designed for desktop view, so it is recommended to view them on a desktop device.
Insights
- First, looking at the seasonal pattern, it’s clear that raining season in San francisco is usually the winter months (Nov to March), but we barely get any rain in the summer;
- Looking at this winter, we got higher than average precipitation during the holiday weeks, especially in the last week of 2022, we got 8.04 inches precipitation in total, which is ~50% higher than the highest precipitation since 2000 (5.43 inches in 2004).
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