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Storm Glass Weather Forecast Your Own Source of Information

Posted by la maison de la science on

Storm Glass Weather Forecast Your Own Source of Information

Storm glass is an amazing instrument for predicting the weather by observing the crystals inside. But how does it really work? Is the shape of the crystals a reliable indicator of the weather to come or is it just a poetic vision of your inner weather?

The storm glass

Description of a storm glass

A storm glass (fitzroy barometer) is a transparent, airtight (sealed) glass bottle containing liquid and crystals. The shape and abundance of crystals is supposed to make a weather forecast and predict the arrival of a storm, as the name suggests.

Storm glass is also known as the Fitzroy barometer (1805-1865). This is paradoxical because storm glass cannot measure atmospheric pressure: its glass walls are rigid and do not allow any exchange with the outside (pressure, humidity). It is unfairly called a "barometer" only because its role is to predict or consult the weather.

CRYSTAL BAROMETER HOW DOES IT WORK?

Your weather forecast in the blink of an eye!

If you follow Robert Fitzroy's observations, depending on the shape of the crystals in your Storm Barometer, you can make a short-term weather forecast.

  • Crystals in the shape of stars or fernsIn: Stormy weather and cool temperatures.
  • When the crystals disappearTemperatures rise
  • Many crystals on the bottomIn: Risk of frost.
  • Star-shaped crystals all over the liquid In: Cloudy weather and precipitation.
  • Transparent liquidIn: Sunny and clear weather.

Scientific explanations on storm glass

The operation of a storm glass cannot be based on the measurement of theatmospheric pressurebecause the glass is rigid and airtight. In addition, storm glass is often placed indoors and therefore cannot have a measure of the outside temperature. Storm glass only measures the ambient temperature inside the room where it is placed.


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