Those of you who like history might be interested in this story about the first weather map produced. It was put together on January 1, 1871, after the Army Signal Service started taking observations in February 1870. There were only a few stations back then, and none in the west, so the detail was very limited, but over time more observations were added. You can read more about it here. Thanks to “This Day in Weather History” on Facebook and Twitter for pointing it up!