1. WeatherChannel.com covers almost 50% of this market

Their path begin from television network dedicated to weather news in far 1982.

Now they are huge company, having also cable and radio networks, newspaper service and internet web site at weatherchannel.com.

Their Headquarters is located in Atlanta, Georgia.

2. National Weather Service® part is about 20%

The National Weather Service (NWS) provides weather, hydrologic, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy.

The National Headquarters of NOAA's National Weather Service is located in Silver Spring, Maryland.

3. The Weather Network® takes about 10%

The Weather Network is a Canadian company. On the web they have detailed city forecast pages for more than 3,000 cities in Canada, the U.S. and internationally.

The Weather Network on TV covers reaches 10.1 million households representing 99 percent of Canadian cable and satellite subscribers.

4. Weather Underground® part is also about 10%

In late spring of 1995, the Weather Underground, Inc. evolved as a separate commercial entity. By fall, the official web site, www.wunderground.com, was released with daily forecasts and hourly conditions for 550 US cities.

Now they have such features as historical weather conditions and astronomy, their city base is about 60,000 US and international cities.

5. AccuWeather® part is about 5%

AccuWeather, established in 1962, is the World’s Weather Authority™. They provide local forecasts for everywhere in the United States and over two million locations worldwide. Now serves hundreds of television and radio stations.

Have headquarters in State College, Pennsylvania.

Others minor market players are Yahoo! Weather, that provides data from WeatherChannel.com, BBC Weather and CNN Weather.

All trademarks are owned by their respective owners.