Following is a list of freeware that provides information on climate, meteorology, and weather. Before you access any software or apps, please read our disclaimer and permissions page if you haven't already done so.

Business and Climate Change Web Site
By Global Environmental Management Initiative (GEMI). Focuses on business opportunities and risks related to the growing concern about global climate change. Includes case studies and quizes.

Climate Prediction Center
By US National Oceanographic and Atmospheric Administration (NOAA). Worldwide climate predictions.

Dust Storm App
By University of Arizona. To help protect drivers from dust-related dangers on the road, the University of Arizona has created a mobile application for iPhones that provides dust storm alerts and safety tips. The app uses a person's geographical location anywhere in the United States to determine if there is danger of a dust storm, or any other type of storm, in the area. The warnings come directly from the WeatherBug service.

Environmental Treaties and Resource Indicators (ENTRI)
By Center for International Earth Science Information Network (CIESIN). Find information about environmental treaties and national resource indicators relevant to nine global environmental issues: 1) land use/land cover change and desertification, 2) global climate change, 3) stratospheric ozone depletion, 4) transboundary air pollution, 5) conservation of biological diversity, 6) deforestation, 7) oceans and their living resources, 8) trade and the environment, and 9) population.

EPA Data Finder
By US Environmental Protection Agency. This site is a single place to find a vast selection of EPA data sources, organized into topics such as air and water that are in easily downloadable formats. Data Finder points to data in downloadable formats to speed up environmental research. For each data source, you can see a basic overview, including the geographic scale and other contextual information, then access the data source itself.

GRID-Arendal Maps and Graphics Database
By United Nations Environment Programme. Graphics and maps that show pollution and atmosphere and climate change globally. Generally free for non-commercial use if source listed.

Interactive Weather Information Network
By National Weather Service. Check out active warnings of flash floods, floods, hurricanes/tropical storms, special marine warnings, non-precipitation events, severe thunderstorms, and tornado activity in the United States.

Internet Weather Source
By National Weather Service. Get detailed weather information worldwide by locality.

Mesoscale Meteorology
By Cooperative Program for Operational Meteorology, Education & Training (COMET). Mesoscale meteorology – the study of medium-scale weather features from 2 to 2000 km in size – can help fine-tune forecasts to make them more accurate and detailed. From severe thunderstorms to mountain winds to hurricanes, mastery of the mesoscale is essential to good forecasters. Modules in this unit include information on forecasting in complex terrain, dust storms, dynamically forced fog, banded precipitation, and a mesoscale meteorology primer. You’ll also find training in data downscaling and how mesoscale models work.

MetEd Modules
By Cooperative Program for Operational Meteorology, Education & Training (COMET). Modules of meteorology education courses as a webcast or web presentation. Topics include floods, wind, hazaroudous weather, forecasting, dust, dispersion modeling, and watersheds.

Meteorological Data Files
By US National Oceanographic and Atmospheric Administration (NOAA). The meteorological data files contain measurements taken at 237 weather stations located throughout the United States for a period extending from 1961 to 1990. Exact collection dates vary by weather station. These data files are compatible with the PRZM3, EXAMS, and PATRIOT software models distributed through the Center for Exposure Assessment Modeling (CEAM).

Mountain Weather Distance Learning Course
By Cooperative Program for Operational Meteorology, Education & Training (COMET). This self-paced course discusses the principles of major mountain weather concerns with the aim of improving the prediction of sensible weather in areas with complex terrain. The course organizes relevant modules and Webcasts on the MetEd Website into three parts: Foundation Topics, Core Topics, and a Case Study. By using our Registration & Assessment system, you can track your progress in the course and receive a course completion certificate.

mPING
By US National Oceanographic and Atmospheric Administration (NOAA). This app lets users anonymously report precipitation from their Apple or Android mobile device. With the mPING app, anyone can send a weather observation on the go. The user simply opens the app, selects the type of precipitation that is falling at his or her location, and presses submit. The user’s location and the time of the observation are automatically included in the report. All submissions will become part of a research project called PING – Precipitation Identification Near the Ground.

National Flood Summary
By US Geological Survey (USGS). The U.S. Geological Survey has made the National Flood Summary information from 1970-1998, including maps and data, available on the World Wide Web. The web site provides the public a tool to compare current or possible flood conditions with past historical flood information by state and year, as to magnitude, cause, loss of life, damage, and cost for this 28-year time period.

National Hurricane Center
By National Weather Service. Check this for forecasts, warnings, and analyses of tropical storm events.

National Hydrologic Assessment
By National Weather Service. Check out the potential for flooding or drought in the United States.

NOAA Photo Collection
By US National Oceanographic and Atmospheric Administration (NOAA). More than 10,000 downloadable photos and images of oceans, the atmosphere, and the history of the pioneers who began the study of the environment in the United States.

nowCOAST
By US National Oceanographic and Atmospheric Administration (NOAA). NowCOAST is a Web mapping portal providing coastal communities with real-time observations and NOAA forecasts. It allows users to view real-time surface observations "on-the-map" along with the latest GOES satellite cloud imagery, and NOAA National Weather Service weather radar images. The GOES imagery is updated every half hour and the weather radar mosaic is updated every 15 minutes.

Numerical Weather Prediction Training Series
By Cooperative Program for Operational Meteorology, Education & Training (COMET). Numerical models are complex tools. Here you’ll find modules that explain how these models work and how to use them in various forecast processes. In addition, you can explore a host of case studies to test your forecasting skills on real-life numerical weather modeling examples.

Summer Severe Weather Distance Learning Course
By Cooperative Program for Operational Meteorology, Education & Training (COMET). This self-paced course discusses the basic principles of warm season convective weather with the aim of improving the prediction of significant and severe convection.

Weatherbase
By Canty and Associates. Find historical weather records and monthly weather averages for more 16,000 cities worldwide.

Winter Weather Distance Learning Course
By Cooperative Program for Operational Meteorology, Education & Training (COMET). Winter weather presents many challenges to the forecaster. This self-paced, distance learning course addresses the scientific aspects of a few of those challenges: microphysics, precipitation type, precipitation amount, and applications of NWP ensembles. As both mesoscale observations and model resolution improve, the forecaster needs to keep abreast of applications of these in the operational environment. These self-paced modules discuss the principles of these applications with the aim of improving winter weather forecasts.

World Weather Information Service
By World Meteorological Organization. Presents weather forecasts as well as climatological information for selected cities supplied by National Meteorological Services (NMSs) worldwide. Links to their web sites are also provided.

WorldWatcher Project (for MacIntosh)
By Northwestern University, School of Education and Social Policy and Institute for the Learning Sciences. A visualization environment for the investigation of scientific data, based on the ClimateWatcher software. Designed to provide an accessible and supportive environment for students to explore, interpret, and analyze scientific data in a manner which allows them to emulate the work of actual scientists. Registration required.

Worldwatcher Project (for Windows)
By Northwestern University, School of Education and Social Policy and Institute for the Learning Sciences. A visualization environment for the investigation of scientific data, based on the ClimateWatcher software. Designed to provide an accessible and supportive environment for students to explore, interpret, and analyze scientific data in a manner which allows them to emulate the work of actual scientists. Registration required.

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This page last updated on 9/29/16