National Weather Service United States Department of Commerce

Keyhole Markup Language (KML) is used by a variety of GIS and mapping applications and the specifications are freely available to the public and available to the user community without charge or restriction. KML is an XML-based language for managing the display of three-dimensional geospatial data in the programs Google Earth, Google Maps, Google Mobile, ArcGIS Explorer, WorldWind and other GIS viewers . The word Keyhole is an earlier name for the software that became Google Earth; the software was produced in turn by Keyhole, Inc, which was acquired by Google in 2004. (more about KML)

The National Weather Service produces several data sets that are available in formats available to import into Geographic Information Systems (GIS). GIS is a collection of computer hardware, software, and geographic data for capturing, managing, analyzing, and displaying all forms of geographically referenced information. It takes the numbers and words from the rows and columns in databases and spreadsheets and puts them on a map. Looking for shapefiles? Questions?

The following links will either provide KML/KMZ files, will link you to a page with these type of files, or displays info in a GIS viewer.

KML can also be generated from the NWS Web Services Rest pages. Go to the bottom of these pages.
 
Current Weather Forecasts Past Weather


Watches & Warnings

Current Weather Watches/Warnings

Doppler Radar

Real Time Radar
CONUS radar fron NSSL
Radar Locations


Surface Observations

10-minute Surface Observations
Hourly Observations


Rivers and Flooding

River Gages: Forecast and Observed AHPS River data

River Gage Forecasts
 


Weather Prediction Center (WPC)

Quantitative Precipitation Forecasts (QPFs)
5-Day Significant River Flood Outlook
Winter Weather Forecasts
Alaska Analyses and Forecasts
CONUS Surface Analyses
 


Storm Prediction Center (SPC)

Convective and Fire Weather Outlooks
 


Climate Prediction Center (CPC)

CPC Temperature and Precipitation Outlooks

 


Normals, Means, Extremes

NCDC Climate Atlas of the United States
NCDC GIS Portal


Severe Weather

Storm Reports: Link to storm report CSV files


Rain/Snowfall

NOHRSC Snow Forecasts
Fire Weather Additional Info

MODIS fires

nowCOAST web mapping portal

 

The Warning Decision Support System (WDSS) Data Page
Great Lakes Environmental Research Laboratory (GLERL)
National Centers for Environmental Prediction