 Surface weather observations are the fundamental data used for safety as well as climatological reasons to forecast weather and issue warnings worldwide . They can be taken manually , by a weather observer , by computer through the use of automated weather stations , or in a hybrid scheme using weather observers to augment the otherwise automated weather station . The ICAO defines the fundamental observations as:
The fundamental observations are the basis for the weather forecast and the warnings issued by meteorological services. The World Meteorological Organization (WMO) has defined the fundamental observations as:
The fundamental observations are the basis for the weather forecast and the warnings issued by meteorological services. The