The Storm Prediction Center
The SPC monitors weather conditions around the country and issues timely and accurate forecasts and watches for severe thunderstorms and tornadoes over the contiguous United States. The SPC also monitors heavy rain, heavy snow, and fire weather events across the U.S. and issues specific products for those hazards. In addition to the outlooks and forecasts, the SPC site also contains an archive of storm reports and some very nice photographs of severe weather.

Real-Time Weather Data from the National Center for Atmospheric Research (NCAR)
This site a great source for current weather data and, the data and graphics are intended for use by pilots, meteorologists, weather enthusiasts and aviation-related personnel. The satellite, surface, and upper air data pages are particularly good.

IWIN - Interactive Weather Information Network
The National Weather Service IWIN site offer quick and easy access to a wide variety of weather data from the NWS including forecasts, warnings, watches, current weather, and public products. The Animated Graphics Version is the best if you have a high speed Internet connection. An enhanced graphics version and text version are also available.

National Centers for Environmental Prediction
NCEP delivers national and global weather, water, climate and space weather guidance, forecasts, warnings and analyses. NCEP is the umbrella organization for the Storm Prediction Center, the Climate Prediction Center, and seven other centers. Among other things, NCEP is responsible for running the numerical models that are used by the NWS and other meteorologists to produce forecasts.

Unisys Weather
A good source of graphical weather information produced using the popular WXP analysis software.

College of DuPage NexLab
The College of DuPage proclaims it has "the most comprehensive community college meteorology program in the country". If severe weather or storm chasing is your thing, then this site should be on your bookmark list. Model analysis, radar images, satellite photos, and regional weather data are all available.

Environment Canada
Environment Canada is the Canadian equivalent of the U.S. National Weather Service. If you have a need for weather and climate information from our friends north of the border, this is the place.

The American Meteorological Society (AMS)
The AMS promotes the development and dissemination of information and education on the atmospheric and related oceanic and hydrologic sciences. Founded in 1919, AMS has a membership of more than 11,000 professionals, professors, students, and weather enthusiasts. Among many other resources, this site contains a directory of Certified Consulting Meteorologists , Employment Announcements , and a listing of the Colleges and Universities in the United States and Canada with curricula in the atmospheric, oceanic, hydrologic, and related sciences.

The National Weather Association
The NWA, formed in 1975, supports and promotes excellence in operational meteorology.

Weatherwise - the Magazine about the Weather
Weatherwise is the only general interest magazine about the weather in the U.S. It has been published since 1948, first by the American Meteorological Society and now by Heldref Publications.

Space Weather Now
For a look at different kind of weather, surf over to this highly graphical site and find information on the solar wind, auroras, and other space weather. NOAA's Space Environment Center is the official source of space weather alerts, warnings, and forecasts.