The NWS has made two precipitation analysis pages available to the public.
Snow Analysis: This product is an objective analysis of NWS COOP and CoCoRaHS snowfall reports. CoCoRaHS data is from non-NWS sources and may have not been fully quality controlled. The product above is centered over Colorado, but can be zoomed in or out as needed. To make this product better, you are encouraged to full out the survey located at the top.
Precip Analysis: These pages graphically show the latest short-term observed precipitation across the majority of the National Weather Service (NWS) CONUS and Puerto Rico. "Observed" data is derived from output from NWS River Forecast Centers (RFCs) , and is displayed as a gridded field with a spatial resolution of 4x4 km. "Observed" data is expressed as a short-term duration total ending at the hour indicated in UTC (same as Greenwich Mean Time, or GMT). For example 1200 GMT coincides with 8 AM EDT, 7 AM EST, 7 AM CDT, 6 AM CST, etc.