Weather is treated as both a kind of event and a kind of relationship.

• When treated as a physical event, each weather event is considered to be a meteorological event of some duration, occurring over some spatial region. Some weather events are almost instantaneous (for example, lightning events), while others are quite lengthy (for example, annual climate cycles). Spatially, weather events may cover a small locality or a large portion of a continent.
   
• The relational sense of weather is used to describe the weather at a particular outdoor location. For example, to say that it's snowy in Lake Tahoe, we would use weather to relate the concept of Lake Tahoe to the concept of Snowy. Note that multiple sorts of conditions can characterize the weather at a given region at a given time; thus the truth of the weather relationship between LakeTahoe and snowy does not rule out the possiblity of using weather to relate the concept of Lake Tahoe to the concept of cloudy.