A statistical relationship between conditions in one part of the world affecting the weather in a different part of the world. For example, there appears to be a teleconnection between the ENSO events and rainfall in California.
Atmospheric interactions between widely separated regions that have been identified through statistical correlations (in space and time). For example, the El NiƱo teleconnection with the Southwest United States involves large-scale changes in climatic conditions that are linked to increased winter rainfall.
Information used by forecasters to determine what the weather might be elsewhere when compared with past weather conditions at the same degree of longitude.