A storm system will continue to bring widespread snow to the Upper Midwest on Tuesday. The same system will bring heavy rain and possible flash flooding to parts of the Appalachians. Meanwhile, a storm system moving onshore will bring freezing rain and snow to the Pacific Northwest.
River levels and flood conditions.
Current obserations from NOAA's geostationary satellites.
Observed precipitation over a 24 hour period
Snow analyses for water equivalent, depth, snowpack temperature, and snow melt.
Upper air observations from radiosonde stations in North America, Pacific Islands, and Caribbean.
Daily maximum and minimum temperatures, snowfall, and 24-hour precipitation totals, as observed by a network of volunteer observers.
Atmospheric and oceanographic conditions reported from a global network of data collecting buoys.