The National Weather Service (NWS) had it’s start all the way back in 1870 when president Ulysses S. Grant signed into law to create a weather service within the us army signal service.

On November 1, 1870, weather forecasts for the eastern ... at the National Weather Bureau, now known as the National Weather Service, to forecast storms with increasing accuracy.

and the Weather Bureau - the precursor to the National Weather Service (NWS) - came into existence in 1870. Though mostly ...