Data - Geospatial (GIS) Resources

The Viewer is an online mapping tool offering comprehensive access to NWS products available in standard map data formats. The Viewer integrates both static and real-time data in a common interface. It provides federal, state, and local decision-makers with access to data for weather, water, and climate for decision making especially during natural and other disasters.

The largest archive of weather data. The GIS Map Services Index provides access to the data and the interactive map application displays available data.

Spatial climate data sets developed by the PRISM climate mapping program at Oregon State University's Spatial Climate Analysis Service (SCAS). Download compressed ASCII files that can be converted to rasters.