Meteorological stations and barographs

What differentiates a barometric station from a barograph?

A barometric station provides an instantaneous reading of atmospheric pressure, useful for monitoring current conditions. A barograph, on the other hand, records the pressure over time, creating a graph that shows the trend and tendencies, allowing you to predict future changes.

What additional data can I obtain from a marine weather station?

In addition to atmospheric pressure, many marine weather stations provide valuable information such as air and water temperature, relative humidity, wind direction and speed, and sometimes even rainfall data. Some advanced models also include weather forecasts based on the data collected.

Where should I position the sensors of a weather station on the boat?

The pressure sensor (if external) should be protected from direct weather, but not sealed to ensure accurate measurement. The anemometer should be installed in a high and unobstructed position for accurate wind measurement. The temperature and humidity sensor should be sheltered from direct sunlight to avoid false readings.

How do I interpret the data provided by a barometric station?

An increase in atmospheric pressure generally indicates improving weather conditions, while a decrease suggests the arrival of bad weather. Rapid and significant variations are often signs of imminent disturbances. Consult Nautica Basile's guides to learn how to correctly interpret the data and navigate safely.