Measuring weather

Surface observations - automated weather stations

The vast majority of professional surface weather observations are made by automated systems of instruments strategically placed around the globe. Most of these are stationary, like those at airports or on anchored ocean buoys, but some are mobile, like those aboard ships.

An Automatic Surface/Weather Observing System (ASOS/AWOS) makes observations 24 hours a day via instruments placed on short towers and other platforms, and sends out a constant stream of data via radio or internet. This data is put into weather prediction models and they also guide forecasters at the National Weather Service who make decisions about thunderstorm or tornado watches and warnings. Often, the ASOS are installed at airports to aid the Federal Aviation Administration in their duties. Approximately 900 ASOS are in operation in the United States. Additionally, there are many AWOS installations in the United States; these are typically run by state and municipal organizations.

 

Find an official automated weather station near you!

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