High Plains Regional Climate Center -- A National Oceanic and Atmospheric Administration and University of Nebraska at Lincoln website.

Midwestern Regional Climate Center -- A National Oceanic and Atmospheric Administration and Illinois State Water Survey website.

National Aeronautics and Space Administration (NASA)

National Climatic Data Center (NCDC) -- A National Oceanic and Atmospheric Administration website.

National Hurricane Center -- A National Oceanic and Atmospheric Administration website.

National Oceanic and Atmospheric Administration (NOAA)

National Severe Storms Laboratory -- A National Oceanic and Atmospheric Administration website.

National Weather Service -- A National Oceanic and Atmospheric Administration website.

Northeast Regional Climate Center -- A National Oceanic and Atmospheric Administration and Cornell University website.

Southeast Regional Climate Center -- A National Oceanic and Atmospheric Administration and University of North Carolina at Chapel Hill website.

Southern Regional Climate Center -- A National Oceanic and Atmospheric Administration and Louisiana State University website.

Storm Prediction Center -- A National Oceanic and Atmospheric Administration website.

Western Regional Climate Center -- A National Oceanic and Atmospheric Administration and Desert Research Institute website.