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The content of these web pages are for personal use and may not be re-sold or used commercially. The graphics and data are intended to be used by meteorologists, weather enthusiasts and aviation-related personnel. Every attempt has been made to provide these data in as near to real time as possible. However, there is no expressed or implied guarantee that the information will be either accurate or timely or fit for any particular purpose. If an obvious outage exists for a long period, then please email me as I may not be aware that a problem exists. However, considering the complexity and content of this site, I expect emails to be professional and considerate; otherwise, I will completely ignore it. If you require absolutely reliable weather data, then you should consider commercial weather vendors since NCAR is not an operational distributor of these data.
The raw observational data used in producing these pages are provided by Unidata. Most, if not all, of the meteorological data collection and instrumentation is done by the National Oceanic and Atmospheric Administration (NOAA) and the National Weather Service (NWS). Most numerical model data originate from NOAA's National Centers for Environmental Prediction (NCEP) in Washington D.C. Except where noted, most images found on these pages were created using NCAR Graphics.
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