The United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 National Centers for Environmental Prediction (NCEP) delivers national and global weather, water, climate and space weather guidance, forecasts, warnings and analyses to its Partners and External User Communities. These products and services are based on a service-science legacy and respond to user needs to protect life and property, enhance that nation's economy and support the nation's growing need for environmental information. The centers form part of the National Weather Service

National Weather Service

The National Weather Service , once known as the Weather Bureau, is one of the six scientific agencies that make up the National Oceanic and Atmospheric Administration of the United States government...

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There are nine centers:

1. Aviation Weather Center provides aviation warnings and forecasts of hazardous flight conditions at all levels within domestic and international air space.
2. Climate Prediction Center
   Climate Prediction Center
   The Climate Prediction Center is one of the National Centers for Environmental Prediction, which are a part of NOAA's National Weather Service. It is located in Camp Springs, Maryland.-Products:...
   
    monitors and forecasts short-term climate fluctuations and provides information on the effects climate patterns can have on the nation.
3. Environmental Modeling Center
   Environmental Modeling Center
   The Environmental Modeling Center , improves numerical weather, marine and climate predictions at the National Centers for Environmental Prediction , through a broad program of research in data assimilation and modeling...
   
    develops and improves numerical weather, climate, hydrological and ocean prediction through a broad program in partnership with the research community.
4. Hydrometeorological Prediction Center
   Hydrometeorological Prediction Center
   The Hydrometeorological Prediction Center is one of nine service centers under the umbrella of the National Centers for Environmental Prediction , a part of the National Weather Service, which in turn is part of the National Oceanic and Atmospheric Administration of the U.S. government...
   
    provides nationwide analysis and forecast guidance products out through seven days.
5. NCEP Central Operations sustains and executes the operational suite of numerical analyses and forecast models and prepares NCEP products for dissemination.
6. Ocean Prediction Center issues weather warnings and forecasts out to five days for the Atlantic and Pacific Oceans north of 30 degrees North
   30th parallel north
   The 30th parallel north is a circle of latitude that is 30 degrees north of the Earth's equatorial plane. It stands one-third of the way between the equator and the North Pole and crosses Africa, Asia, the Pacific Ocean, North America and the Atlantic Ocean....
   
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7. Space Weather Prediction Center provides space weather alerts and warnings for disturbances that can affect people and equipment working in space and on earth.
8. Storm Prediction Center
   Storm Prediction Center
   The Storm Prediction Center , located in Norman, Oklahoma, is tasked with forecasting the risk of severe thunderstorms and tornadoes in the contiguous United States. The agency issues convective outlooks, mesoscale discussions, and watches as a part of this process...
   
    provides tornado and severe weather watches for the contiguous United States along with a suite of hazardous weather forecasts.
9. The National Hurricane Center
   National Hurricane Center
   The National Hurricane Center , located at Florida International University in Miami, Florida, is the division of the National Weather Service responsible for tracking and predicting weather systems within the tropics between the Prime Meridian and the 140th meridian west poleward to the 30th...
   
   provides forecasts of the movement and strength of tropical weather systems and issues watches and warnings for the North Atlantic and the Eastern Pacific ocean.

External links

• NCEP Homepage
• NOAA Center for Weather and Climate Prediction
• Operational Significant Event Imagery (the OSEI 'Image of the Day' is always located here).
• NCEP on www.top500.org