Space weather is the concept of changing environmental conditions in near-Earth space. It is distinct from the concept of weather within a planetary atmosphere, and deals with phenomena involving ambient plasma, magnetic fields, radiation and other matter in space. “Space weather” often implicitly means the conditions in near-Earth space within the magnetosphere and ionosphere, but it is also studied in interplanetary (and occasionally interstellar) space. The primary source of these changes is what happens on the Sun. Changes in the near-Earth space environment affect our society. The best known ground-level consequence of space weather is geomagnetically induced currents, or GIC. These are damaging electrical currents that can flow in power grids, pipelines and other conducting networks and cause disruptions and black outs. Eight years ago, the American Meteorological Society tentatively reached out to the space weather community by scheduling a day-and-a-half Space Weather Symposium at its Annual Meeting. That symposium included briefings from operational and research agencies involved with space weather as well as a variety of talks targeting areas of interest common to meteorology and space weather.