What is the prefix for three-letter station identifiers for all weather reporting stations in the contiguous United States?

The prefix for three-letter station identifiers for all weather reporting stations in the contiguous United States is "K". This prefix indicates that the station is located in the United States and is used by the National Weather Service (NWS) for its reporting stations. Each state is assigned a certain range of identifiers that are based on the first letter. For instance, "K" is commonly associated with stations in the U.S., while other prefixes are used in different territories or for varying types of stations.

Understanding the structure of these identifiers is important for interpreting weather data and for meteorological significance, as they lead to ease of identification when accessing weather reports or related information. The prefix system helps to categorize stations geographically and operationally, ensuring clarity and consistency in meteorological communications.