Interesting, Random Facts, Records, Science, Daily FactsCuriousOneMay 16, 2019Volunteers, Automation, Weather, There’s, National, staycurious, Rulers, Facts, Fact, Verified, Snowfall, Service, Thousands, MeasuringComment There's no automation in measuring snowfall - the US National Weather Service has thousands of volunteers with rulers Interesting, Random Facts, Records, Science, Daily FactsCuriousOneMay 16, 2019Volunteers, Automation, Weather, There’s, National, staycurious, Rulers, Facts, Fact, Verified, Snowfall, Service, Thousands, MeasuringComment